METHOD FOR TESTING THE FUNCTIONAL SOUNDNESS OF AT LEAST ONE INJECTION VALVE

摘要

The invention relates to a method for testing the functional soundness of at least one injection valve (10) of an internal combustion engine (8), in which at least the functional soundness of a lambda probe (12) adapted to determine a state of the at least one injection valve (10) is tested, wherein a steady-state operating condition of the internal combustion engine (8) is established, and a test is performed to see whether at least one signal of the lambda probe (12) is stable for the established operating condition. Depending on whether the signal of the lambda probe (12) is stabile or not, a lambda value for the at least one injection valve (10) is measured using the lambda probe (12) at the established operating condition.