Evaluation arrangement for a lambda probe

摘要

Evaluation arrangement for a lambda probe of a controlled catalytic converter in a motor vehicle is described. The evaluation arrangement is located parallel to the electronic system of the engine and controls the characteristic fuel/air mixture. The output signal of the lambda probe is connected via an amplitude-limiting window discriminator to a comparator which compares the amplitude with a predetermined upper limit value and a predetermined lower limit value. The comparison result is output on a display device.