| 摘要 |
PURPOSE:To prevent an intermittent driving shock from occurring, by making a fuel injection cut so as to be checked at a time when the following conditions are satisfied in time of constant-speed driving control, in case of a device which cuts a flow of fuel injection when a throttle valve is fully closed for more than the specified period of time long and an engine speed is above the specified one. CONSTITUTION:In time of car driving, at a control part 10, when each condition that a signal indicating that 'full close' in a throttle valve opening sensor 20 continues for the specified period (for example, more than 0.5sec) and an engine speed to be secured out of the output of a crank angle sensor 19 is above the specified one (for example, 900r.p.m.) is entirely satisfied, a fuel injection cut command is emitted and thereby fuel injection out of an injector 27 is stopped. And, when a signal indicating that constant-speed driving control is under way is inputted from a constant speed driving controller 28, output of the said fuel injection cut command is checked. With this constitution, an intermittent driving shock due to a repetition of the suspension and resumption of fuel injection in time of driving a downward slope is thus prevented.
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