Patent ID: 8055431

Claim:
An engine output controller for controlling an opening amount of a throttle valve by way of an output of a motor having hysteresis characteristics, comprising: a target throttle opening amount input means for inputting a target opening amount (DTHR) for said throttle valve; a control means for transmitting to said motor a control signal for controlling the output of said motor with an output characteristic according to said target opening amount (DTHR); and an opening amount detecting means for detecting an actual opening amount (DTH) of said throttle valve and transmitting to said control means an opening amount information signal indicating the detection result; wherein when said target opening amount (DTHR) is changed starting from a condition where said throttle valve is stopped, said control means calculates an output of said motor necessary for a starting operation of said motor and outputs said control signal obtained through compensation for a deficiency; wherein regulation of the opening and the closing of the throttle valve by the motor involves a hysteresis characteristic, characterized in that the control means determines different hysteresis compensation regions as a function of a difference (ETHL) between the target opening amount (DTHR) and actual opening amount (DTH) of the throttle valve and then determines a hysteresis compensation value for each region, wherein the control means makes a determination of whether hysteresis compensation is needed based on five separate regions established based on ETHL values.