| 摘要 |
PROBLEM TO BE SOLVED: To control an electronic throttle valve with a high accuracy not using a throttle valve open degree sensor. SOLUTION: The throttle valve 21 disposed at a suction passage 2 of an engine 1 is driven by an actuator 21a such as a motor. An electronic control unit 30 calculates a target suction air amount GAT based on a driver's accelerator pedal operation amount detected by an accelerator open degree sensor 33 and an engine revolution number detected by a revolution number sensor 35 and detects an actual engine suction air amount GA by an air flow meter 31 disposed at the suction passage. The actuator 21a is driven such that the GA is coincident with the GAT to feedback-control the throttle valve 21 open degree. Thereby, it becomes possible that the electronic throttle valve is controlled with a high accuracy not using the throttle valve open degree sensor.
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