Fuel mixture control system for internal combustion engine uses lambda sonde downstream of catalytic converter and uses falling lambda signal to generate further control signal

摘要

The fuel mixture control system uses a lambda sonde downstream of the catalytic converter. It uses succession of signal segments (Segmentanzahl) and uses a falling lambda signal (VLS-DOWN [V]) to generate a further control signal (40). The regulation system may be tuned to have a gentle effect on the mixture and a lambda signal falling in steps (32,34,44) may give a generally flat further control signal.