Patent ID: 6481269
Filing Date: 2002-11-19
Classification: F02B,G01M

Abstract:
A method of testing an at least partly assembled internal combustion engine having an intake valve and an exhaust valve, comprising the steps of:driving the at least partly assembled engine with an external power source to develop an engine pressure, continuously measuring the engine pressure while the at least partly assembled engine is driven, determining, based on the measured engine pressure, an engine timing when at least one predetermined mode of change of the engine pressure occurs in at least one of (a) an external intake-valve side space communicating with the intake valve and not supplied with pressurized air from outside the at least partly assembled engine and (b) an external exhaust-valve side space communicating with the exhaust valve and not supplied with pressurized air from outside the at least partly assembled engine, and judging whether there is at least one fault with the at least partly assembled engine based on the determined engine timing.