| 摘要 |
A throttle actuator varies an actual throttle valve opening degree for an engine in response to a control signal independently of driver's accelerator operation. An engine control unit determines a target torque (or a variable quantity representing the target torque) in accordance with an accelerator opening degree, and normally controls the actual throttle opening degree in a normal mode based on the target torque. In a predetermined operating region where the throttle opening responds too sensitively to a change in the target torque, the control unit controls the throttle opening degree in a constraint mode in accordance with a parameter, such as the accelerator opening degree, independent of the target torque.
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