| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality detection device of the engine suction system, it is accurate in the abnormalities of an engine suction system, and high-lands compensation is unnecessary, it can control as minimize the data capacity for abnormal detection. SOLUTION: Suctionin air pressure power Pim detected by a pressure sensor, calculating an amount of calculated suctionin air GP based on the suction air temperature Tim detected by the temperature sensor (S2 and S3), according to an air flow meter detects the amount of real suction air GF (S4), Value GP-GF which subtracted the volume GF of real suction air from the volume GP of calculated suction air is whether a larger tentative abnormality judgment than the predetermined value α made (S5). The condition of a tentative abnormality judgment consists continuing prescribed time and (S8), in addition, if a prescribed frequency is generated repeatedly (S11), it is judged that the suction system is abnormal (S12). |
