Method for operating internal combustion engine of motor car, involves performing specific diagnosis relative to pollutant emissions of motor car within predetermined operating range of engine upon fulfillment of predetermined condition

摘要

The method involves arranging an exhaust gas probe (41) with jump probe characteristics in an exhaust system (40). A crankshaft angle sensor (22) is provided for providing measured signal representing crank angle of crankshaft. The specific diagnosis is performed with respect to pollutant emissions of motor car within predetermined operating range of the engine upon fulfillment of predetermined condition, during respective plateau phase of the actuating signal of lambda control. An independent claim is included for device for operating internal combustion engine of motor car.