| 摘要 |
PROBLEM TO BE SOLVED: To improve engine startability in an internal combustion engine. SOLUTION: When an ignition switch 66 is turned off, an electronic control unit 33 performs full-closing control in which the throttle opening specifying state of a stepping motor 30 is so controlled that the throttle openingθof an intake throttle valve 29 may be zero. The electronic control unit 33 continues control for making the throttle opening of the intake throttle valve 29 zero while the engine inertia speed is not less than the preset speed No. When the engine inertia speed is less than the preset speed No, the electronic controller 33 performs the piston stop position control in which the throttle opening specifying state of the stepping motor 30 is so controlled that the throttle opening of the intake throttle valve 29 may be larger than zero.
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