| 摘要 |
A throttle control device for controlling an opening of a throttle valve in response to operation of an accelerator operating mechanism includes throttle operating means and first driving means connected to the accelerator operating mechanism and arranged to engage with the throttle operating means for driving the same in a direction to open the throttle valve. The first driving means drives the throttle operating means within a predetermined displacement in response to operation of the accelerator operating mechanism after it engages the throttle operating means. The device further includes biasing means for biasing the throttle operating means in a direction to close the throttle valve, and second driving means for driving the throttle operating means independently of the first driving means. A driving power source is connected to the second driving means. Between the second driving means and the throttle operating means, there is disposed clutch means for taking one of a first position of the throttle operating means engaged with the second driving means and a second position of the throttle operating means disengaged therefrom. Accordingly, even in the case where the driving power source operates abnormally, a certain opening of the throttle valve is ensured, as long as the accelerator operating mechanism is operated continuously.
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