Regulation No. 120-01

Name:Regulation No. 120-01
Description:Net power, Torque and Fuel Consumption.
Official Title:Uniform Provisions Concerning the Approval of: Internal Combustion Engines to be Installed in Agricultural and Forestry Tractors and in Non-road Mobile Machinery, with Regard to the Measurement of the Netpower, Net Torque and Specific Fuel Consumption.
Country:ECE - United Nations
Date of Issue:2013-03-01
Amendment Level:01 Series
Number of Pages:60
Vehicle Types:Agricultural Tractor, Component
Subject Categories:Emissions and Fuel Consumption
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Keywords:

engine, fuel, type, maximum, approval, power, engines, family, regulation, speed, annex, manufacturer, net, pressure, test, air, system, number, make, temperature, reference, minimum, characteristics, min, torque, exhaust, injection, rated, case, conditions, kpa, inlet, iso, combustion, measured, pump, point, equipment, en-iso, parent, paragraph, applicable, method, technical, values, production, approved, content, appendix, requirements

Text Extract:

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E/ECE/324
) Rev.2/Add.119/Rev.1
E/ECE/TRANS/505 )
March 1, 2013
STATUS OF UNITED NATIONS REGULATION
ECE 120-01
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
INTERNAL COMBUSTION ENGINES TO BE INSTALLED IN
AGRICULTURAL AND FORESTRY TRACTORS AND IN
NON-ROAD MOBILE MACHINERY, WITH REGARD TO THE
MEASUREMENT OF THE NET POWER, NET TORQUE
AND SPECIFIC FUEL CONSUMPTION
Incorporating:
00 series of amendments
Date of Entry into Force: 06.04.05
Supplement 1 to the 00 series of amendments
Date of Entry into Force: 13.04.12
01 series of amendments
Date of Entry into Force: 26.07.12

REGULATION No. 120-01
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF INTERNAL
COMBUSTION ENGINES TO BE INSTALLED IN AGRICULTURAL AND
FORESTRY TRACTORS AND IN NON-ROAD MOBILE MACHINERY, WITH
REGARD TO THE MEASUREMENT OF THE NET POWER, NET TORQUE
AND SPECIFIC FUEL CONSUMPTION
REGULATION
1. Scope
2. Definitions
3. Application for approval
4. Approval
5. Specifications and tests
6. Conformity of production
7. Penalties for non-conformity of production
CONTENTS
8. Modification and extension of approval of an engine type or engine family
9. Production definitively discontinued
10. Names and addresses of Technical Services responsible for conducting approval tests, and of
Type Approval Authorities
ANNEXES
Annex 1
− Essential characteristics of the internal combustion engine and general information
concerning the conduct of tests
Appendix 1 − Essential characteristics of the engine/parent engine
Appendix 2 − Essential characteristics of the engine family
Appendix 3 − Essential characteristics of engine type within the family
Annex 2
Annex 3
− Communication
− Arrangements of approval marks

REGULATION NO. 120-01
1. SCOPE
1.1. This Regulation applies to the representation of the curves as a function of engine speed of
the power, torque and specific fuel consumption at full load, indicated by the manufacturer
for internal combustion engines to be used:
1.1.1. In Category T vehicles ,
1.1.2. In non-road mobile machinery , operated under variable or constant speed.
1.2. The internal combustion engines belong to one of the following categories:
1.2.1. Reciprocating internal combustion engines (positive-ignition or compression-ignition), but
excluding free piston engines;
1.2.2. Rotary piston engines (positive-ignition or compression-ignition).
2. DEFINITIONS
2.1. "Approval of an engine" means the approval of an engine type with regard to its net power
measured in accordance with the procedure specified in Annex 4 to this Regulation;
2.2. "Approval of an engine family" means the approval of the members of an engine family
with regard to their net power in accordance with the procedure specified in Annexes 5 or 6
to this Regulation;
2.3. "Engine type" means a category of engines which do not differ in such essential engine
characteristics as defined in Annex 1 - Appendix 3 to this Regulation;
2.4. "Engine family" means a manufacturer's grouping of engines which, through their design,
fulfil the grouping criteria laid down in Annex 5 to this Regulation;
2.5. "Parent engine" means an engine selected from an engine family in such a way that it
complies with requirements set out in Annex 5 of this Regulation;
2.6. "Net power" means the power obtained on a test bench at the end of the crankshaft or its
equivalent at the corresponding engine speed with the auxiliaries and equipment listed in
Table 1 of Annex 4 to this Regulation, determined under reference atmospheric conditions;
2.7. "Rated net power" means engine net power as declared by the manufacturer at rated
speed;
2.8. "Maximum net power" means the maximum value of the net power measured at full
engine load;
2.9. "Rated speed" means the maximum full load speed allowed by the governor, as designed
by the manufacturer, or, if such a governor is not present, the speed at which the maximum
power is obtained from the engine, as specified by the manufacturer;

4.4. There shall be affixed, conspicuously and in a readily accessible place as specified on the
approval form, to every engine conforming to an engine type or an engine family approved
under this Regulation an international approval mark consisting of:
4.4.1. A circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval;
4.4.2. The number of this Regulation, followed by the Letter "R", a dash and the approval number
to the right of the circle prescribed in Paragraph 4.4.1.
Alternatively, instead of affixing these approval marks and symbols to the engine, the
manufacturer may decide that engine approved under this Regulation shall be accompanied
by a document giving this information in order to enable the approval marks and symbol to
be attached to the vehicle.
4.5. If the engine conforms to an approved type or family under one or more other Regulations
annexed to the Agreement, in the country which has granted approval under this
Regulation, the symbol prescribed in Paragraph 4.4.1. need not be repeated; in such a case
the Regulation and approval numbers and the additional symbols of all the Regulations
under which approval has been granted under this Regulation shall be placed in vertical
columns to the right of the symbol prescribed in Paragraph 4.4.1.
4.6. The approval mark shall be placed close to or on the data plate affixed by the manufacturer
to the approved type.
4.7. Annex 3 to this Regulation gives examples of arrangements of approval marks.
4.8. Every engine conforming to an engine type or an engine family approved under this
Regulation must bear, in addition to the approval mark:
4.8.1. The trademark or trade name of the manufacturer of the engine;
4.8.2. The manufacturer’s engine code.

5.2.3.3.2. In the case of an engine without self-adaptive fuelling:
The fuel used shall be the one available on the market with the Wobbe Index at least
52.6 MJm- (20° C, 101.3 kPa). In case of dispute the fuel used shall be the reference fuel
GR specified in Annex 7, i.e. the fuel with the highest Wobbe Index, or
5.2.3.3.3. In the case of an engine labelled for a specific range of fuels:
The fuel used shall be the one available on the market with the Wobbe Index at least
52.6 MJm (20° C, 101.3 kPa) if the engine is labelled for the H-range of gases, or at least
47.2 MJm (20° C, 101.3 kPa) if the engine is labelled for the L-range of gases. In case of
dispute the fuel used shall be the reference fuel GR specified in Annex 7 if the engine is
labelled for the H-range of gases, or the reference fuel G23 if the engine is labelled for the
L-range of gases, i.e. the fuel with the highest Wobbe Index for the relevant range, or
5.2.3.3.4. In the case of an engine labelled for one specific fuel composition:
The fuel used shall be the fuel for which the engine is labelled.
5.2.3.3.5. The fuel used shall be specified in the test report.
5.2.3.4. For compression-ignition engines:
The fuel used shall be the reference fuel specified in Annex 7.
The choice of the test fuel shall be made based on the exhaust limit values that the engine
type or the engine family is intended to comply with. Based on the power bands described
in the Regulation setting uniform provisions concerning the approval of compression ignition
(C.I.) engines to be installed in agricultural and forestry tractors and in non-road mobile
machinery with regard to the emissions of pollutants by the engine, the reference fuel shall
be selected as follows:
Annex 7 – Table 1 for power bands D to G
Annex 7 – Table 2 for power bands H to K
Annex 7 – Table 3 for power bands L to R.
Optionally, the reference fuel specified in Annex 7 - Table 1 may be used for power bands
H to K.
5.2.4. Measurements shall be carried out according to the provisions of Annex 5 to this
Regulation.
5.2.5. The test report shall contain the results and all the calculations required to determine the net
power, as listed in the Appendix to Annex 4 to this Regulation together with the
characteristics of the engine, as listed in Annex 1 to this Regulation.
W = H
×
ρ
/ ρ

7. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
7.1. The approval granted in respect of an engine type or an engine family pursuant to this
Regulation may be withdrawn if the requirements set forth in Paragraph 6.1. above are not
met or if an engine or an engine family bearing the approval mark does not conform to the
type approved.
7.2. If a Contracting Party to the 1958 Agreement applying this Regulation withdraws an
approval it has previously granted, it shall forthwith so notify the other Contracting Parties
applying this Regulation, by means of a communication form conforming to the model in
Annex 2 to this Regulation.
8. MODIFICATION AND EXTENSION OF APPROVAL OF AN ENGINE TYPE OR ENGINE
FAMILY
8.1. Every modification of an engine type or an engine family with regard to the characteristics in
Annex 1, shall be notified to the Type Approval Authority which approved the engine type or
engine family. The Type Approval Authority may then either:
8.1.1. Consider that the modifications made are unlikely to have any appreciable adverse effect
and that in any case the engine still complies with the requirements; or
8.1.2. Require a further test report from the Technical Service responsible for conducting the tests.
8.2. Confirmation or refusal of approval, specifying the alterations shall be communicated by the
procedure specified in Paragraph 4.3. above to the Parties to the Agreement applying this
Regulation.
8.3. The Type Approval Authority issuing the extension of approval shall assign a series number
for such an extension and inform thereof the other Parties to the 1958 Agreement applying
this Regulation by means of a communication form conforming to the model in Annex 2 to
this Regulation.
9. PRODUCTION DEFINITIVELY DISCONTINUED
If the holder of an approval completely ceases to manufacture an engine type or an engine
family approved in accordance with this Regulation, he shall so inform the authority which
granted the approval. Upon receiving the relevant communication that authority shall inform
thereof the other Parties to the 1958 Agreement applying this Regulation by means of a
communication form conforming to the model in Annex 2 to this Regulation.
10. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR
CONDUCTING APPROVAL TESTS, AND OF TYPE APPROVAL AUTHORITIES
The Parties to the Agreement which apply this Regulation shall communicate to the United
Nations Secretariat the names and addresses of the Technical Services responsible for
conducting approval tests, and/or the Type Approval Authorities which grant approval, and
to which forms certifying approval or extension or refusal of approval, issued in other
countries, are to be sent.

2. Attachments
2.1. Essential characteristics of the parent engine(s) (see Appendix 1) ...........................................
...................................................................................................................................................
2.2. Essential characteristics of the engine family (see Appendix 2) ................................................
...................................................................................................................................................
2.3. Essential characteristics of engine types within the family (see Appendix 3) ............................
...................................................................................................................................................
3. Characteristics of engine-related parts of the mobile machinery (if applicable) ........................
...................................................................................................................................................
4. Photographs of the parent engine ..............................................................................................
5. List of further attachments:
5.1. Appendix 1/Appendix 2/Appendix 3
5.2. Declared power, torque and specific fuel consumption curves for engine/parent engine and
engines within the family
5.3. Any further attachments, if any: .................................................................................................

1.12.2. Air
1.12.2.1. Blower: yes/no
1.12.2.2. Characteristics or make(s) and type(s) (if applicable): ..............................................................
...................................................................................................................................................
1.12.2.3. Drive ratio(s) (if applicable): .......................................................................................................
1.13. Temperature Permitted by the Manufacturer
1.13.1. Liquid cooling: maximum temperature at outlet: ...................................................................... K
1.13.2. Air cooling: reference point: .......................................................................................................
1.13.3. Maximum temperature at reference point: ............................................................................... K
1.13.4. Maximum charge air outlet temperature at the inlet inter-cooler (if applicable):
................................................................................................................................................. K
1.13.5. Maximum exhaust temperature at the point in the exhaust pipe(s) adjacent to the outer
flange(s) of the exhaust manifold(s): ........................................................................................ K
1.13.6.
Lubricant temperature:
minimum: .................................................................... K
maximum: ................................................................... K
1.14. Pressure charger: yes/no
1.14.1. Make: .........................................................................................................................................
1.14.2. Type: ..........................................................................................................................................
1.14.3. Description of the system (e.g. max. charge pressure, waste-gate, if applicable): ...................
1.14.4. Inter-cooler: yes/no
1.15. Intake system: maximum allowable intake depression at rated engine speed and at 100%
load: ..................................................................................................................................... kPa
1.16. Exhaust system: maximum allowable exhaust back-pressure at rated engine speed and at
100% load: ........................................................................................................................... kPa

2.2.3. Air injection: yes/no
2.2.3.1. Type (pulse air, air pump, etc.): ................................................................................................
2.2.4. EGR: yes/no
2.2.4.1. Characteristics (cooled/uncooled, high pressure/low pressure, etc.): ......................................
2.2.5. Particulate trap: yes/no
2.2.5.1. Dimensions and capacity of the particulate trap: ......................................................................
2.2.5.2. Type and design of the particulate trap: ...................................................................................
2.2.5.3. Location (place(s) and maximum/minimum distance(s) from engine): .....................................
2.2.5.4. Method or system of regeneration, description and/or drawing: ...............................................
2.2.5.5. Normal operating temperature (K) and pressure (kPa) range: .................................................
2.2.6. Other systems: yes/no
2.2.6.1. Description and operation: ........................................................................................................
3. FUEL FEED FOR COMPRESSION-IGNITION ENGINES
3.1. Feed pump
3.1.1. Pressure or characteristic diagram : ................................................................................. kPa
3.2. Injection system
3.2.1. Pump
3.2.1.1. Make(s): .....................................................................................................................................
3.2.1.2. Type(s): ......................................................................................................................................
3.2.1.3. Maximum fuel delivery: ...... mm per stroke or cycle at full injection at pump speed of:
min (rated) and ....... min (maximum torque) respectively, or characteristic diagram: ..........
...................................................................................................................................................
3.2.1.3.1. Mention the method used: on engine/on pump bench
3.2.1.4. Injection advance
3.2.1.4.1. Injection advance curve : ........................................................................................................
3.2.1.4.2. Timing : ....................................................................................................................................

4. FUEL FEED FOR POSITIVE-IGNITION ENGINES
4.1. Carburettor
4.1.1. Make(s): .....................................................................................................................................
4.1.2. Type(s): ......................................................................................................................................
4.2. Port fuel injection: single-point or multi-point
4.2.1. Make(s): .....................................................................................................................................
4.2.2. Type(s): ......................................................................................................................................
4.3. Direct-injection
4.3.1. Make(s): .....................................................................................................................................
4.3.2. Type(s): ......................................................................................................................................
4.4. Fuel flow [g/h] and air/fuel ratio at rated speed and wide open throttle: ....................................
4.5 Electronic Engine Management Control Unit: ............................................................................
4.5.1. Make(s): .....................................................................................................................................
4.5.2. Type: ..........................................................................................................................................
4.5.3. Emission related adjustment possibilities: .................................................................................
4.5.4. Further documentation: ..............................................................................................................
5. VALVE TIMING
5.1. Maximum lift and angles of opening and closing in relation to dead centres or equivalent
data: ...........................................................................................................................................
5.2. Reference and/or setting ranges : ...........................................................................................
5.3. Variable valve timing system (if applicable and where: intake and/or exhaust) : ...................
5.3.1. Type: continuous or on/off
5.3.2. Cam phase shift angle: ..............................................................................................................
6. PORTING CONFIGURATION
6.1. Position, size and number: .........................................................................................................

ANNEX 1 − APPENDIX 2
ESSENTIAL CHARACTERISTICS OF THE ENGINE FAMILY
1. COMMON PARAMETERS
1.1. Combustion cycle: ......................................................................................................................
1.2. Cooling medium: ........................................................................................................................
1.3. Method of air aspiration: ............................................................................................................
1.4. Combustion chamber type/design: ............................................................................................
...................................................................................................................................................
1.5. Valve and porting 3/4 configuration, size and number: ..............................................................
...................................................................................................................................................
1.6. Fuel system: ...............................................................................................................................
1.7. Engine management systems
Proof of identity pursuant to drawing number(s): .......................................................................
...................................................................................................................................................
1.7.1. Charge cooling system: .............................................................................................................
1.7.2. Exhaust gas recirculation : ......................................................................................................
1.7.3. Water injection/emulsion : .......................................................................................................
1.7.4. Air injection : ............................................................................................................................
1.8. Proof of identical (or lowest for the parent engine) ratio: system capacity/fuel delivery per stroke,
pursuant to diagram number(s) : ...................................................................................................

ANNEX 1 − APPENDIX 3
ESSENTIAL CHARACTERISTICS OF ENGINE TYPE WITHIN THE FAMILY
1.
DESCRIPTION OF THE ENGINE
1.1.
Manufacturer: .............................................................................................................................
1.2.
Manufacturer's engine code: ......................................................................................................
1.3.
Cycle: four-stroke/two-stroke
1.4.
Bore
:................................................................................................................................. mm
1.5.
Stroke
:.............................................................................................................................. mm
1.6.
Number, layout and firing order of cylinders: .............................................................................
1.7.
Engine capacity
:............................................................................................................... cm
1.8.
Rated speed: ...................................................................................................................... min
1.9.
Maximum torque speed: .................................................................................................... min
1.10.
Volumetric compression ratio
:................................................................................................
1.11.
Combustion system description: ................................................................................................
1.12.
Drawing(s) of combustion chamber and piston crown: ..............................................................
...................................................................................................................................................
1.13.
Minimum cross-sectional area of inlet and outlet ports: .............................................................
1.14.
Cooling system: liquid/air
1.14.1.
Liquid
1.14.1.1.
Nature of liquid: ..........................................................................................................................
1.14.1.2.
Circulating pump(s): yes/no
1.14.1.3.
Characteristics or make(s) and type(s) (if applicable): ..............................................................
...................................................................................................................................................
1.14.1.4.
Drive ratio(s) (if applicable): .......................................................................................................

2. MEASURES TAKEN AGAINST AIR POLLUTION
2.1. Device for recycling crankcase gases: yes/no : .....................................................................
2.2. Additional anti-pollution devices (if any, and if not covered by another heading)
2.2.1. Catalytic converter: yes/no
2.2.1.1. Make(s): ....................................................................................................................................
2.2.1.2. Type(s): .....................................................................................................................................
2.2.1.3. Number of catalytic converters and elements: ..........................................................................
2.2.1.4. Dimensions and volume of the catalytic converter(s): ..............................................................
2.2.1.5. Type of catalytic action: ............................................................................................................
2.2.1.6. Total charge of precious metals: ...............................................................................................
2.2.1.7. Relative concentration: .............................................................................................................
2.2.1.8. Substrate (structure and material): ...........................................................................................
2.2.1.9. Cell density: ...............................................................................................................................
2.2.1.10. Type of casing for the catalytic converter(s): ............................................................................
2.2.1.11. Location of the catalytic converter(s) (place(s) and maximum/minimum distance(s) from
engine): .....................................................................................................................................
2.2.1.12. Normal operating range (K): .....................................................................................................
2.2.1.13. Consumable reagent (where appropriate): ...............................................................................
2.2.1.13.1. Type and concentration of reagent needed for catalytic action: ...............................................
2.2.1.13.2. Normal operational temperature range of reagent: ...................................................................
2.2.1.13.3. International standard (where appropriate): ..............................................................................
2.2.1.14. NO sensor: yes/no

3. FUEL FEED FOR COMPRESSION-IGNITION ENGINES
3.1. Feed pump
Pressure
or characteristic diagram: ................................................................................. kPa
3.2. Injection system
3.2.1. Pump
3.2.1.1. Make(s): .....................................................................................................................................
3.2.1.2. Type(s): ......................................................................................................................................
3.2.1.3. Maximum fuel delivery: ...... mm per stroke or cycle at full injection at pump speed of:
....... min (rated) and .......min (maximum torque) respectively, or characteristic diagram: ...
...................................................................................................................................................
3.2.1.3.1. Mention the method used: on engine/on pump bench
3.2.1.4. Injection advance
3.2.1.4.1. Injection advance curve : ........................................................................................................
3.2.1.4.2. Timing : ....................................................................................................................................
3.2.2. Injection piping
3.2.2.1. Length: ................................................................................................................................. mm
3.2.2.2. Internal diameter: ................................................................................................................. mm
3.2.3. Injector(s)
3.2.3.1. Make(s): .....................................................................................................................................
3.2.3.2. Type(s): ......................................................................................................................................
3.2.3.3. Opening pressure or characteristic diagram : ................................................................ kPa
3 2.4. Governor
3.2.4.1. Make(s): .....................................................................................................................................
3.2.4.2. Type(s): ......................................................................................................................................
3.2.4.3. Speed at which cut-off starts under full load : ................................................................. min
3.2.4.4. Maximum no-load speed : ............................................................................................... min
3.2.4.5. Idling speed : ................................................................................................................... min

5. VALVE TIMING
5.1. Maximum lift and angles of opening and closing in relation to dead centers or equivalent
data: ...........................................................................................................................................
5.2. Reference and/or setting range : ............................................................................................
5.3. Variable valve timing system (if applicable and where: intake and/or exhaust) :
...................................................................................................................................................
5.3.1. Type: continuous or on/off
5.3.2. Cam phase shift angle: ..............................................................................................................
6. PORTING CONFIGURATION
6.1. Position, size and number: .........................................................................................................
7. IGNITION SYSTEM
7.1. Ignition coil
7.1.1. Make(s): .....................................................................................................................................
7.1.2. Type(s): ......................................................................................................................................
7.1.3. Number
7.2. Spark plug(s)
7.2.1. Make(s): .....................................................................................................................................
7.2.2. Type(s): ......................................................................................................................................
7.3. Magneto
7.3.1. Make(s): .....................................................................................................................................
7.3.2. Type(s): ......................................................................................................................................
7.4. Ignition timing
7.4.1. Static advance with respect to Top Dead Center [crank angle degrees]: ..................................
7.4.2. Advance curve, if applicable: .....................................................................................................

7. Date of report issued by that service: ........................................................................................
8. Number of report issued by that service: ...................................................................................
9. Location and method of affixing of the ECE approval mark: .....................................................
10. Reason(s) for extension of approval (if applicable): ..................................................................
...................................................................................................................................................
11. Main specification of internal combustion engine
11.1. Approved data
11.1.1. Rated net power: ...................................................... kW, at ............................................... min
11.1.2. Maximum net power: ................................................ kW, at ............................................... min
11.1.3. Maximum net torque: .............................................. Nm, at ............................................... min
11.2. Essential characteristics of the engine type/parent engine type: ...............................................
...................................................................................................................................................
11.2.1. Operating principle:
11.2.1.1. Positive-ignition/compression-ignition
11.2.1.2. Four-stroke/two-stroke
11.2.2. Number, layout and firing order of cylinders: .............................................................................
11.2.3. Cylinder capacity: ................................................................................................................. cm
11.2.4. Fuel feed: carburettor/indirect injection/direct injection
11.2.5. Pressure-charger device: Yes/No
11.2.6. Exhaust after-treatment device: Yes/No
11.3. Engine fuel requirements: leaded petrol/unleaded petrol/diesel fuel/NG / LPG:
11.4. Restriction of use:
11.4.1. Particular conditions to be respected in the installation of the engine(s) on the machinery
11.4.1.1. Maximum allowable intake depression: ............................................................................... kPa
11.4.1.2. Maximum allowable back-pressure: ..................................................................................... kPa
11.4.2. Any other (if applicable): ............................................................................................................

ANNEX 3
ARRANGEMENTS OF APPROVAL MARKS
Model A
(see Paragraph 4.4. of this Regulation)
a = 8 mm min.
The above approval mark affixed to an engine shows that the engine type concerned has been approved
in the Netherlands (E4) with regard to the measurement of the net power, pursuant to
Regulation No. 120 and under the approval number 012492. The approval number indicates that the
approval was granted in accordance with the requirements of Regulation No. 120 as amended by the
01 series of amendments.
Model B
(see Paragraph 4.5. of this Regulation)
a = 8 mm min.
The above approval mark affixed to an engine shows that the engine type concerned has been approved
in the Netherlands (E4) pursuant to Regulations No. 120 and 96 . The first two digits of the approval
numbers indicate that, at the dates when the respective approvals were granted, Regulation No. 120 was
amended by the 01 series of amendments, and Regulation No. 96 already included the 02 series of
amendments.

Table 1
Equipment and Auxiliaries to be Installed
for the Test to Determine Engine Power
Number Equipment and auxiliaries Fitted for emission test
1 Inlet system
Inlet manifold
Crankcase emission control system
Air flow meter
Air filter
Inlet silencer
Induction-heating device of inlet manifold
Yes
Yes
Yes
Yes.
Yes.
Yes, standard production equipment. If possible
to be set in the most favourable condition
2 Exhaust system
Exhaust after treatment
Exhaust manifold
Connecting pipes
Silencer
Tail pipe
Exhaust brake
Pressure charging device
Yes, standard production equipment
Yes, standard production equipment
Yes.
Yes.
Yes.
No.
Yes
3 Fuel supply pump Yes
4 Carburation equipment
Carburettor
Electronic control system, air flow meter, etc.
Equipment for gas engines
Pressure reducer
Evaporator
Mixer
5 Fuel injection equipment (petrol and diesel)
Pre-filter
Filter
Pump
High-pressure pipe
Injector
Electronic control system, sensors, etc.
Governor/control system
Automatic full-load stop for the control rack
depending on atmospheric conditions
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

2.4. Setting Conditions
The setting conditions for the test to determine the net power are indicated in Table 2.
Table 2
Setting Conditions
1. Setting of carburettor(s),
evaporator/pressure regulator
2. Setting of injection pump delivery
system
3. Ignition or injection timing (timing
curve)
4. Governor setting
5. Emission control devices
6. Boost Control
In accordance with the manufacturer's
production specifications, and used without
further alteration for the particular
application.

4. ACCURACY OF MEASUREMENTS
4.1. Torque: ± 1% of measured torque. The torque measuring system shall be calibrated to take
friction losses into account. The accuracy in the lower half of the measuring range of the
dynamometer bench may be ± 2% of measured torque.
4.2. Engine speed: 0.5% of measured speed.
4.3. Fuel consumption: ± 1% of measured consumption.
4.4. Fuel temperature: ± 2 K.
4.5. Engine inlet air temperature: ± 2 K.
4.6. Barometric pressure: ± 100 Pa.
4.7. Depression in inlet system: ± 50 Pa.
4.8. Back-pressure in exhaust system: ± 200 Pa.
5. POWER CORRECTION FACTORS
5.1. Definition
The power correction factor is the coefficient to determine the engine power under the
reference atmospheric conditions specified in 5.2. below.
where:
P = α P
P
is the corrected power (i.e. power under reference atmospheric conditions)
α is the correction factor (α or α )
P
is the measured power (test power)
5.2. Reference Atmospheric Conditions
5.2.1. Temperature (T ): 298 K (25° C)
5.2.2. Dry pressure (P ): 99 kPa
The dry pressure is based on a total pressure of 100 kPa and a water vapour pressure of
1 kPa.

5.4.2. Compression-ignition engines - factor α
The power correction factor (α ) for compression-ignition engines at constant fuel rate is
obtained by applying the formula:
where:
α = (f )
f
f
is the atmospheric factor
the characteristic parameter for each type of engine and adjustment
5.4.2.1. Atmospheric factor f
This factor indicates the effects of environmental conditions (pressure, temperature and
humidity) on the air drawn in by the engine. The atmospheric factor formula differs
according to the type of engine.
5.4.2.1.1. Naturally aspirated and mechanically pressure charged engines
f
⎛ 99 ⎞ ⎛
= ⎜ ⎟ × ⎜
⎝ ρ ⎠ ⎝
T
298



5.4.2.1.2. Turbocharged engines with or without charge air cooling
f
⎛ 99 ⎞
= ⎜ ⎟
⎝ ρ ⎠

× ⎜

T
298




ANNEX 4 - APPENDIX
RESULTS OF TESTS FOR MEASURING NET ENGINE POWER
This form shall be completed by the laboratory performing the test.
1.
TEST CONDITIONS
1.1.
Location of exhaust back-pressure measuring point
1.2.
Location of inlet depression measuring point
1.3.
Characteristics of the dynamometer
1.3.1.
Make: ......................................…….
Model: ...........................................................................
1.3.2
Type: ..........................................................................................................................................
2.
FUEL
2.1.
For positive-ignition engines operating on liquid fuel
2.1.1.
Make: .........................................................................................................................................
2.1.2.
Specification: ..............................................................................................................................
2.1.3.
Anti-knock additive (lead, etc): ...................................................................................................
2.1.3.1.
Type: ..........................................................................................................................................
2.1.3.2.
Content: ............................................................................................................................... mg/l
2.1.4.
Octane number RON: .................................................................................(ASTM D 26 99-70)
2.1.4.1.
Specify density: .................................................................................................. g/cm at 288 K
2.1.4.2.
Lower calorific value:.......................................................................................................... kJ/kg
2.2.
For positive-ignition engines operating on gaseous fuel
2.2.1.
Make: .........................................................................................................................................
2.2.2.
Specification: ..............................................................................................................................
2.2.3.
Storage pressure: .................................................................................................................. bar
2.2.4.
Utilization pressure:............................................................................................................... bar
2.2.5.
Lower calorific value:.......................................................................................................... kJ/kg

4. DETAILED RESULTS OF MEASUREMENTS
Engine speed, min
Measured torque, Nm
Measured power, kW
Measured fuel flow, g/h
Barometric pressure, kPa
Water vapour pressure, kPa
Inlet air temperature, K
Power to be added for equipment and auxiliaries in
excess of Table 1, kW
Power correction factor
Corrected power, kW
Corrected torque, Nm
Corrected specific fuel consumption g/(kWh)
Cooling liquid temperature at outlet, K
Lubricating oil temperature at measuring point, K
Air temperature after pressure-charger, K
Fuel temperature at injection pump inlet, K
Air temperature after charge air cooler, K
Pressure after pressure-charger, kPa
Pressure after charge air cooler, kPa
Inlet depression, Pa
Exhaust back-pressure, Pa
Fuel delivery, mm /stroke or cycle
Total, kW
No. 1
No. 2
No. 3

3. Parameters Defining the Engine Family
3.1. Combustion Cycle:
(a)
(b)
(c)
(d)
2-stroke;
4-stroke;
Rotary engine;
Others.
3.2. Fuel Type:
(a)
(b)
(c)
Diesel;
Petrol;
Gaseous (NG or LPG).
3.3. Configuration of the Cylinders
3.3.1. Position of the Cylinders in the Block:
(a) V;
(b)
(c)
(d)
In-line;
Radial;
Others (F, W, etc.).
3.3.2. Relative Position of the Cylinders
Engines with the same block may belong to the same family as long as their bore
centre-to-centre dimensions are the same.
3.4. Main Cooling Medium:
(a)
(b)
(c)
Air;
Water;
Oil.
3.5. Individual Cylinder Displacement
Within 85% and 100% for engines with a unit cylinder displacement ≥ 0.75 dm of the
largest displacement within the engine family.
Within 70% and 100% for engines with a unit cylinder displacement < 0.75 dm of the
largest displacement within the engine family.

3.10. Miscellaneous Devices:
(a)
(b)
(c)
(d)
Exhaust gas recirculation (EGR);
Water injection;
Air injection;
Others.
3.11. Electronic Control Strategy
The presence or absence of an Electronic Control Unit (ECU) on the engine is regarded as
a basic parameter of the family.
In the case of electronically controlled engines, the manufacturer shall present the technical
elements explaining the grouping of these engines in the same family, i.e. the reasons why
these engines can be expected to satisfy the same emission requirements.
The electronic governing of speed does not need to be in a different family from those with
mechanical governing. The need to separate electronic engines from mechanical engines
should only apply to the fuel injection characteristics, such as timing, pressure, rate shape,
etc.
3.12. Exhaust After-Treatment Systems
The function and combination of the following devices are regarded as membership criteria
for an engine family:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
Oxidation catalyst;
DeNO system with selective reduction of NO (addition of reducing agent);
Other DeNO systems;
Particulate trap with passive regeneration;
Particulate trap with active regeneration;
Other particulate traps;
Other devices.
When an engine has been certified without an after-treatment system, whether as a parent
engine or as a member of the family, then this engine, when equipped with an oxidation
catalyst (not with particulate trap), may be included in the same engine family, if it does not
require different fuel characteristics.

ANNEX 6
CHECKS ON CONFORMITY OF PRODUCTION
1. GENERAL
These requirements are consistent with tests to be held to check conformity of production
(COP), according to Paragraph 6.2. of this Regulation.
2. TEST PROCEDURES
The methods of testing and measuring instruments shall be those described in Annex 4 to
this Regulation.
3. COLLECTION OF SAMPLES
3.1. Case of an Engine Type
One engine has to be chosen. If after the test of Paragraph 5.1. below, the engine is not
considered as conforming to the requirements of this Regulation, two more engines have to
be tested.
3.2. Case of a Family of Engines
In case of an approval granted to a family of engines the COP shall be run on one member
of the family, which is not the parent engine. In case of failure of the COP test, the two
more engines shall be of the same member type.
4. MEASUREMENT CRITERIA
4.1. Net Power and Specific Fuel Consumption of Internal Combustion Engine
Measurements shall be taken at a sufficient number of engine speeds to define correctly the
power, torque and specific fuel consumption curves between the lowest and the highest
engine speeds recommended by the manufacturer as defined in Paragraphs 2.9. and 2.11.
of this Regulation.
The corrected values measured for the engine sampled shall not differ by more than the
values indicated in the table below and ± 10% for the specific fuel consumption.
Engine type
Rated net power
(torque) [%]
Other measurement
points on the curve [%]
Tolerance for
engine speed [%]
General ± 5 ± 10 ± 5
Petrol fuelled spark ignited
engines with governor
Petrol fuelled spark ignited
engines without governor
± 8 ± 12 ± 8
± 8 ± 20 ± 8

ANNEX 7
TECHNICAL DATA OF REFERENCE FUELS
1. TECHNICAL DATA OF THE LPG REFERENCE FUELS
Parameter
Motor Octane
Number
Composition:
Unit
Limits Fuel A
Limits Fuel B
Minimum Maximum Minimum Maximum
Test Method
1 92.5 92.5 EN 589 Annex B
C3 content % vol 48 52 83 87
C4 content % vol 48 52 13 17 ISO 7941
Olefins % vol 12 14
Evaporation
residue
Total sulphur
content
mg/kg 50 50 NFM 41-015
ppm
mass
50 50 EN 24260
Hydrogen sulphide − None None ISO 8819
Copper strip
corrosion
rating Class 1 Class 1 ISO 6251
Water at 0° C Free Free Visual inspection

Reference fuel G25
Characteristics Units Basis
Composition:
Minimum
Limits
Maximum
Test Method
Methane
86
84
88
Balance
%-mole


1
ISO 6974
N
14
12
16
Sulphur content
mg/m


10
ISO 6326-5

4. REFERENCE FUEL FOR COMPRESSION-IGNITION ENGINES
Table 1
Agricultural and Forestry Tractors and Non-road Mobile Machinery Reference Fuel
for CI Engines Type Approved to Meet Limit Values of Power Bands D to G
Cetane number Minimum 45
Maximum 50
Density at 15° C
Limits and units
Minimum 835 kg/m
Maximum 845 kg/m
ISO 5165
Distillation – 95% point Maximum 370° C ISO 3405
Viscosity at 40° C Minimum 2.5 mm /s
Maximum 3.5 mm /s
Sulphur content
Minimum 0.1% mass
Maximum 0.2% mass
Test method
ISO 3675, ASTM D 4052
ISO 3104
Flash point Minimum 55° C ISO 2719
CFPP Minimum –
Maximum + 5° C
ISO 8754, EN 24260
EN 116
Copper corrosion Maximum 1 ISO 2160
Conradson carbon residue (10% DR) Maximum 0.3% mass ISO 10370
Ash content Maximum 0.01% mass ASTM D 482
Water content Maximum 0.05% mass ASTM D 95, D 1744
Neutralization(strong acid) number
Minimum 0.20 mg KOH/g
Oxidation stability Maximum 2.5 mg/100 ml ASTM D 2274
Additives

Table 2
Agricultural and Forestry Tractors and Non-road Mobile Machinery Reference Fuel
for CI Engines Type Approved to Meet Limit Values of Power Bands H to K
Parameter
Unit
Minimum
Limits
Maximum
Test Method
Cetane number 52.0 54.0 EN-ISO 5165
Density at 15° C kg/m 833 837 EN-ISO 3675
Distillation:
50% point °C 245 – EN-ISO 3405
95% point °C 345 350 EN-ISO 3405
Final boiling point °C – 370 EN-ISO 3405
Flash point °C 55 – EN 22719
CFPP °C – -5 EN 116
Viscosity at 40° C mm /s 2.5 3.5 EN-ISO 3104
Polycyclic aromatic
hydrocarbons
% m/m 3.0 6.0 IP 391
Sulphur content mg/kg – 300 ASTM D 5453
Copper corrosion – Class 1 EN-ISO 2160
Conradson carbon residue
(10% DR)
% m/m – 0.2 EN-ISO 10370
Ash content % m/m – 0.01 EN-ISO 6245
Water content % m/m – 0.05 EN-ISO 12937
Neutralization (strong acid)
number
mg KOH/g – 0.02 ASTM D 974
Oxidation stability mg/ml – 0.025 EN-ISO 12205
The values quoted in the specifications are "true values". In establishment of their limit values the terms of ISO 4259
"Petroleum products – Determination and application of precision data in relation to methods of test" have been
applied and in fixing a minimum value, a minimum difference of 2R above zero has been taken into account; in fixing
a maximum and minimum value, the minimum difference is 4R (R = reproducibility).
Notwithstanding this measure, which is necessary for technical reasons, the manufacturer of fuels should
nevertheless aim at a zero value where the stipulated maximum value is 2R and at the mean value in the case of
quotations of maximum and minimum limits. Should it be necessary to clarify the questions as to whether a fuel
meets the requirements of the specifications, the terms of ISO 4259 should be applied.
The range for the cetane number is not in accordance with the requirements of a minimum range of 4R. However, in
the case of a dispute between fuel supplier and fuel user, the terms of ISO 4259 may be used to resolve such
disputes provided replicate measurements, of sufficient number to archive the necessary precision, are made in
preference to single determinations.
The actual sulphur content of the fuel used for the test shall be reported.
Even though oxidation stability is controlled, it is likely that shelf life will be limited. Advice should be sought from the
supplier on storage conditions and shelf life.

Net power, Torque and Fuel Consumption.