Method of testing assembled internal combustion engine

摘要

The present application relates to a method of testing the assembled state of an internal combustion engine (90) and quickly and accurately judging whether there is at least at least one fault with the assembling of the engine (90). While at least one of an external intake-valve side space (92) which communicates with an intake valve (50) and an external exhaust-valve side space (100) which communicates with an exhaust valve (48) is isolated from an atmosphere, a crank shaft is rotated, using an independent rotating device, to reciprocate a piston (10) in a cylinder. The assembled state of the engine (90) is evaluated based on a pressure in said at least one of the intake-valve side space (92) and exhaust-valve side space (100) which is measured while the corresponding intake valve (50) or exhaust valve (48) should have been closed.