| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality detector of a fuel supply system capable of detecting any abnormality of the fuel supply system while suppressing any increase in cost. SOLUTION: The abnormality detector of the fuel supply system includes a signal processing unit of executing the processing of determining whether the air-fuel ratio is rich or lean based on the output signal of an air-fuel ratio sensor installed on an engine, the processing of counting the number of lean determination in which the air-fuel ratio is determined lean if the engine operational state is included in an abnormality monitoring operational range, the processing of recognizing the case in which the number of lean determination is equal to or more than the predetermined value, and the processing of determining the abnormality of the fuel supply system when the abnormality monitoring state is continuously recognized by the predetermined number. COPYRIGHT: (C)2011,JPO&INPIT |
