초록 ▼

After an elapse of a predetermined time period or after a run of a predetermined distance, a power output system of the present invention heats a catalytic converter with a catalyst heater while enabling an engine to be driven under a driving condition suitable for checking a catalyst packed in the

After an elapse of a predetermined time period or after a run of a predetermined distance, a power output system of the present invention heats a catalytic converter with a catalyst heater while enabling an engine to be driven under a driving condition suitable for checking a catalyst packed in the catalytic converter for deterioration of the catalytic function. The power output system then measures a variation in temperature of the catalyst in this state and determines whether or not the variation is within a normal range, thereby detecting the deteriorating catalytic function of the catalyst, that is, abnormality of the catalytic converter. This structure enables the power output system to realize accurate detection of abnormality of the catalytic converter at a sufficient frequency. During the measurement of the temperature change of the catalyst, an assist motor is driven and controlled to output a torque Td* corresponding to a step-on amount of an accelerator pedal to a drive shaft. This enables a desired power to be output to the drive shaft even during the course of the abnormality detection. Detection of abnormalities in an engine supercharger and exhaust gas recirculation system is also provided.

대표청구항 ▼

[ What is claimed is:] [1.] An abnormality detection apparatus for detecting abnormality of an internal combustion engine-related device, whose state is varied by a driving condition of an internal combustion engine, said abnormality detection apparatus comprising:physical quantity measurement means

[ What is claimed is:] [1.] An abnormality detection apparatus for detecting abnormality of an internal combustion engine-related device, whose state is varied by a driving condition of an internal combustion engine, said abnormality detection apparatus comprising:physical quantity measurement means for measuring a physical quantity that reflects a state of said internal combustion engine-related device;engine operation control means for controlling operation of said internal combustion engine to a predetermined driving condition, in response to a predetermined instruction; andabnormality detection means for detecting abnormality of said internal combustion engine-related device based on said physical quantity, when said engine operation control means causes said internal combustion engine to be driven under said predetermined driving condition.