UNITED

NATIONS

Distr.

Economic and Social	GENERAL

Council	TRANS/WP.29/700
9 December 1999
ENGLISH

Original: ENGLISH

and FRENCH

ECONOMIC COMMISSION FOR EUROPE

INLAND TRANSPORT COMMITTEE

Working Party on the Construction of Vehicles

DRAFT SUPPLEMENT 1 TO REGULATION No. 103

(Replacement catalytic converters)

Note: The text reproduced below was adopted by the Administrative Committee (AC.1) of the amended 1958 Agreement at its thirteenth session, following the recommendation by the Working Party at its one-hundred-and-nineteenth session. It is based on document TRANS/WP.29/1999/42, not amended (TRANS/WP.29/689, para. 153).

GE.99-

Paragraph 5.3., amend to read:

"5.3.	Requirements regarding noise and vehicle performance

The replacement catalytic converter shall satisfy the technical requirements of Regulation No. 59. As an alternative to the measurement of back-pressure as specified in Regulation No. 59, the verification of the vehicle performance can be performed by measuring on a chassis dynamometer the maximum absorbed power at a speed corresponding to the engine maximum power. The value determined under reference atmospheric conditions as specified in Regulation

No. 85 with the replacement catalytic converter shall not be lower by more than 5 per cent than that determined with the original equipment catalytic converter."