scope:

This International Standard specifies a method for testing engines designed for automotive vehicles. It applies to the evaluation of their performance with a view, in particular, to presenting curves of power and specific fuel consumption at full load as a function of engine speed.

It applies only to net power assessment.

This International Standard concerns internal combustion engines used for propulsion of passenger cars and other motor vehicles, excluding motorcycles, mopeds and agricultural tractors (see the note in the foreword), normally travelling on roads and included in one of the following categories:

- reciprocating internal combustion engines (sparkignition or compression-ignition) but excluding free piston engines;

- rotary piston engines.

These engines may be naturally aspirated or pressure-charged, either using a mechanical supercharger or turbocharger.