Name: | Regulation No. 83-07 Proposed Supplement 3 |
---|---|

Description: | Emissions - Light Duty Vehicles. Proposed Supplement 3 to the 07 Series. |

Official Title: | Proposal for Supplement 3 to the 07 Series of Amendments to Regulation No. 83 (Emissions of M1 and N1 Vehicles). |

Country: | ECE - United Nations |

Date of Issue: | 2016-04-08 |

Amendment Level: | Original |

Number of Pages: | 5 |

Information: | Provisional Date of Entry into Force: February 9, 2017 |

Vehicle Types: | Bus, Car, Heavy Truck, Light Truck |

Subject Categories: | Drafts and Proposals (Historical) |

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ECE/TRANS/WP.29/2016/43

PROPOSAL FOR SUPPLEMENT 3 TO THE 07 SERIES OF

AMENDMENTS TO

REGULATION NO. 83

(EMISSIONS OF M 1 AND N 1 VEHICLES)

ADOPTED AT THE 169 SESSION – JUNE 2016

PROVISIONAL DATE OF ENTRY INTO FORCE: FEBRUARY 9, 2017

5.1.1.2.5. These measurements shall be carried out in opposite directions until, for each reference

speed v , a minimum of three consecutive pairs of measurements have been obtained

which satisfy the statistical accuracy p , in per cent, as defined below.

pj =

t⋅s

n

100

⋅ ≤ 3%

ΔT

where:

p is the statistical accuracy of the measurements performed at reference speed v ;

n

∆T

is the number of pairs of measurements;

is the mean coast down time at reference speed v in seconds, given by the

equation:

ΔT

1

= ∑

n

ΔT

where ∆T is the harmonic mean coast down time of the i pair of measurements

at velocity v , seconds [s], given by the equation:

ΔT

=

⎛

⎜ 1

⎜

⎝

ΔT

2

⎞ ⎛

⎟

+

⎜ 1

⎟ ⎜

⎠ ⎝

ΔT

⎞

⎟

⎟

⎠

where ∆T and ∆T are the coast down times of the i measurement at reference

speed v , in seconds [s], in opposite directions a and b, respectively;

s

is the standard deviation, in seconds [s], defined by:

s

( ΔT

− Δ )

1

= ∑

T

n − 1

t

is a coefficient given in the following table:

Coefficient t as function of n

5.1.1.2.9. For each reference speed v calculate the power (P ), [kW], by the formula:

where:

P =(F · v )/1,000

F

is the average resistance at reference speed, j, [N];

v is the reference speed, j, [m/s], defined in 5.1.1.2.3.

5.1.1.2.10. The complete power curve (P), [kW], as a function of speed, [km/h], shall be calculated

with a least squares regression analysis."

Paragraph 5.1.1.2.8. (former), renumber as Paragraph 5.1.1.2.11.

Paragraphs 5.1.2.2.5. to 5.1.2.2.7., amend to read:

"5.1.2.2.5. Carry out the operations specified in Paragraph 5.1.1.2. of this Appendix (with the

exception of Paragraph 5.1.1.2.4. of this Appendix), replacing M by I in the formula set

out in Paragraph 5.1.1.2.7. of this Appendix.

5.1.2.2.6. Adjust the brake to reproduce the corrected power (Paragraph 5.1.1.2.11. of this

Appendix) and to take into account the difference between the vehicle mass (M) on the

track and the equivalent inertia test mass (I) to be used. This may be done by calculating

the mean corrected road coast down time from V to V and reproducing the same time

on the dynamometer by the following relationship:

T

T

=

K

I

⋅

M

K = value specified in Paragraph 5.1.1.2.11. above.

5.1.2.2.7. The power P to be absorbed by the dynamometer shall be determined in order to

enable the same power (Paragraph 5.1.1.2.11. of this Appendix) to be reproduced for the

same vehicle on different days."

Paragraph 5.2.1.2.7., amend to read:

"5.2.1.2.7. The average torque C determined on the track shall be corrected to the reference

ambient conditions as follows:

C = K · C

Where K has the value specified in Paragraph 5.1.1.2.11. of this Appendix."

PROPOSAL FOR SUPPLEMENT 3 TO THE 07 SERIES OF

AMENDMENTS TO

REGULATION NO. 83

(EMISSIONS OF M 1 AND N 1 VEHICLES)

ADOPTED AT THE 169 SESSION – JUNE 2016

PROVISIONAL DATE OF ENTRY INTO FORCE: FEBRUARY 9, 2017

5.1.1.2.5. These measurements shall be carried out in opposite directions until, for each reference

speed v , a minimum of three consecutive pairs of measurements have been obtained

which satisfy the statistical accuracy p , in per cent, as defined below.

pj =

t⋅s

n

100

⋅ ≤ 3%

ΔT

where:

p is the statistical accuracy of the measurements performed at reference speed v ;

n

∆T

is the number of pairs of measurements;

is the mean coast down time at reference speed v in seconds, given by the

equation:

ΔT

1

= ∑

n

ΔT

where ∆T is the harmonic mean coast down time of the i pair of measurements

at velocity v , seconds [s], given by the equation:

ΔT

=

⎛

⎜ 1

⎜

⎝

ΔT

2

⎞ ⎛

⎟

+

⎜ 1

⎟ ⎜

⎠ ⎝

ΔT

⎞

⎟

⎟

⎠

where ∆T and ∆T are the coast down times of the i measurement at reference

speed v , in seconds [s], in opposite directions a and b, respectively;

s

is the standard deviation, in seconds [s], defined by:

s

( ΔT

− Δ )

1

= ∑

T

n − 1

t

is a coefficient given in the following table:

Coefficient t as function of n

5.1.1.2.9. For each reference speed v calculate the power (P ), [kW], by the formula:

where:

P =(F · v )/1,000

F

is the average resistance at reference speed, j, [N];

v is the reference speed, j, [m/s], defined in 5.1.1.2.3.

5.1.1.2.10. The complete power curve (P), [kW], as a function of speed, [km/h], shall be calculated

with a least squares regression analysis."

Paragraph 5.1.1.2.8. (former), renumber as Paragraph 5.1.1.2.11.

Paragraphs 5.1.2.2.5. to 5.1.2.2.7., amend to read:

"5.1.2.2.5. Carry out the operations specified in Paragraph 5.1.1.2. of this Appendix (with the

exception of Paragraph 5.1.1.2.4. of this Appendix), replacing M by I in the formula set

out in Paragraph 5.1.1.2.7. of this Appendix.

5.1.2.2.6. Adjust the brake to reproduce the corrected power (Paragraph 5.1.1.2.11. of this

Appendix) and to take into account the difference between the vehicle mass (M) on the

track and the equivalent inertia test mass (I) to be used. This may be done by calculating

the mean corrected road coast down time from V to V and reproducing the same time

on the dynamometer by the following relationship:

T

T

=

K

I

⋅

M

K = value specified in Paragraph 5.1.1.2.11. above.

5.1.2.2.7. The power P to be absorbed by the dynamometer shall be determined in order to

enable the same power (Paragraph 5.1.1.2.11. of this Appendix) to be reproduced for the

same vehicle on different days."

Paragraph 5.2.1.2.7., amend to read:

"5.2.1.2.7. The average torque C determined on the track shall be corrected to the reference

ambient conditions as follows:

C = K · C

Where K has the value specified in Paragraph 5.1.1.2.11. of this Appendix."