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Informal Document GRPE-77-06

Document Title UN R85: Amendment proposal
Reference Number GRPE-77-06
Origin OICA
Document Date 4 June 2018
Document Posted 12 June 2018
Meeting Session(s)

40. The expert from OICA presented GRPE-77-06 proposing a new Supplement to UN Regulation No. 85 (Measurement of the net power) amending provisions on power measurement of air-cooled high-power engines. The expert from the Netherlands needed more clarifications on the actual proposal. The expert from OICA stated all questions would be answered before the next session of GRPE in January 2019.


Proposal to introduce an alternative test method for measuring charge-air-cooled engines net power for use with high power engines of those. The proposal would “decrease the charge air cooler outlet temperature by the same amount that the ambient conditions for the vehicle test varied from the standard temperature” in line with SAE J1349, “9.3 Application of Vehicle Transient Data to Net Power Test.”

Document Status Superseded
Related Documents
GRPE/2019/7 | UN R85: Proposal for a new Supplement