Throttle valve opening detecting device

摘要

According to the device of the invention, measured values (V0', V') of an output VA of an opening sensor at two adjusted levels of throttle openings in both idling state and fast idling state and their ideal values (V0, V) are used. The value V0' in the idling state is subtracted from the output VA in a driving condition, (VA-V0'), which is then multiplied by the ratio of ideal variation characteristics of the sensor output for a change of the throttle opening to those in the throttle valve product used, {(V-V0)/(V'-V0')}, to produce a correction signal TA matching the individual difference. Further, a reference value subtracted from the output VA in a driving condition is set as TAMIN which varies with the output VA, taking the difference of variation characteristics of the sensor output from ideal characteristics into account.