| 摘要 |
PURPOSE:To prevent the quantity of fuel from becoming overrich even at the time of deceleration by detecting decrease in intake air quantity and reducing the quantity of feeding fuel. CONSTITUTION:An intake air quantity sensor 13 outputs a pulse in accordance with air quantity taken into an internal combustion engine 1 and a crank angle sensor 17 outputs a pulse in accordance with the rotation of the internal combustion engine 1. An intake air quantity detecting means 20 calculates the number of output pulses of the intake air quantity sensor 13 which enter in between defined crank angles of the internal combustion engine 1, from the output of the intake air quantity sensor 13 and the output of the crank angle sensor 17. An intake air quantity operating means 21 calculates the number of pulses corresponding to the output of the intake air quantity sensor 13 corresponding to decrease in an air quantity which is considered to be taken into the internal combustion engine 1, from the output of the intake air quantity decrease detecting means 20. A control means 22 controls the driving time of an injector 14 in accordance with the air quantity which is taken into the internal combustion engine 1 based on the output of the intake air quantity operating means 21 and the output of a water temp. Sensor 18 for detecting the cooling water temp. Of the internal combustion engine 1, thereby, controlling the quantity of fuel which is fed into the internal combustion engine 1.
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