APPARATUS FOR DETECTING FLAMEOUT OF INTERNAL COMBUSTION ENGINE

摘要

An apparatus for detecting a flameout in an internal combustion engine includes a rotational speed sensor for detecting engine rotational speed and for generating an electrical signal corresponding to the engine rotational speed. A sensor is provided for detecting the air-fuel ratio of the engine exhaust gas and for generating an output electrical signal corresponding to the air-fuel ratio. An engine load sensor arrangement detects a load state of the internal combustion engine and generates an output electrical signal corresponding to the load state. A control arrangement is provided for comparing the output signal from the exhaust gas sensor with the output signal from the engine load sensor arrangement when the exhaust gas sensor indicates a lean mixture. The control arrangement uses this comparison information to determine whether a flameout has occurred. The control arrangement is also capable of accommodating a response or delay time associated with the exhaust gas sensor.