Monitoring system for IC engine catalytic exhaust systems comprises probe downstream from catalytic unit which analyzes gas leaving it and values obtained being compared with those from second probe upstream from it to detect faults

摘要

A monitoring system for catalytic converter systems for IC engine exhaust comprises a probe (80) mounted downstream from a catalytic unit (70) which is connected to a control unit (100). The probe analyzes the gas leaving the unit and the values obtained are compared with those from a second probe (60) mounted upstream from it to detect a fault in the unit.