METHOD AND APPARATUS FOR DIAGNOSIS INJECTORS

摘要

A tester for conveniently diagnosing the fuel injectors of an internal combustion engine is described. The fuel injector includes an injector coil that is charged during an energizing period. The tester calculates the difference between two sample signals obtained during the energizing period. The tester determines a first operational status of the injector based on th is difference, and a second operational status based on the level of at least o ne of the sampled signals.