Throttle controller

Internal-combustion engines – Engine speed regulator – Open loop condition responsive


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25112904, F02D 1110, F02D 4102




The present throttle controller may generate the exact driving force to hold the target position between the fully closed and the fully opened positions of the throttle valve since a position holding factor is calculated based on the target position. Accordingly, the throttle valve may hold at the target position without any help of reduction mechanism between the motor and the throttle valve. Further, the position holding factor takes a larger value than that of the actual position while the target position is more opened than the actual positron. Such larger position holding factor boosts the throttle valve to promptly reach the target position. On the contrary, the position holding factor takes a smaller value than that of the actual position while the target position is more closed than that of the actual position. Such smaller position holding factor also boosts the throttle valve to reach the target position promptly. Accordingly, in the present invention, the throttle valve may settle at the target position promptly.

patent: 5606950 (1997-03-01), Fujiwara et al.


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