ARRANGEMENT FOR SWITCHING IN AN EXHAUST-GAS PROBE HEATER

摘要

The invention is directed to an arrangement for advancing the point in time at which the mixture control is placed into operation when starting an internal combustion engine. This advance is made possible in that the exhaust-gas probe heater is already switched on in advance of the start of the engine. Operations are utilized for triggering the required switching signal which occur when the vehicle is taken into service such as opening the doors of the vehicle. An unnecessary heating of the exhaust-gas probe is precluded by limiting the time duration of the heating pulse applied to the heater.