ISO 9249:2007 specifies a method for testing the net power of reciprocating internal combustion engines intended for the propulsion of earth-moving machinery as defined in ISO 6165. It is intended to provide a standardized means of reporting net power values to the end user of the earth-moving machines. It is applicable to: RIC spark- or compression-ignition engines but excluding free piston engines; rotary piston engines. These engines may be naturally aspirated or pressure-charged using either a mechanical pressure-charger or turbocharger.