DS DS/EN ISO 5165
DS DSEN SO 5165 1998-JUN-17 Petroleum products - Determnaton of the gnton qualty desel fuels - Cetane engne method
DS DSEN SO 5165 1998-JUN-17 Petroleum products - Determnaton of the gnton qualty desel fuels - Cetane engne method
This International Standard establishes the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers using a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected diesel engine. The cetane number is determined at constant speed in a pre-combustion chamber-type compression ignition test engine. However, the relationship of test engine performance to full scale, variable speed, variable load engines is not completely understood.