Patent ID: 6070458
Filing Date: 2000-06-06
Classification: F02D

Abstract:
A device for detecting and correcting an opening of a throttle valve that determines the intake volume for an engine, comprising:a sensor interlocked with the throttle valve to provide an output signal corresponding to throttle valve opening; andcorrection means for producing a correction signal in accordance with the output signal from said sensor, said correction means performing a zero-point correction for correcting the output signal from said sensor at a first throttle valve opening providing a first engine intake volume and a variation correction for correcting a variation of the output signal from said sensor relative to a variation of the throttle valve opening from the first throttle valve opening by multiplying the signal after the zero-point correction by a predetermined coefficient;wherein said correction means produces a correction signal T.sub.A in accordance with the following equation: ##EQU4## where V.sub.A is the output signal of said sensor,V.sub.0 ' is the value of V.sub.A at the first throttle valve opening,V' is the value of V.sub.A at a second throttle valve opening different from the first opening,V.sub.0 is an ideal value of V.sub.0 ', andV is an ideal value of V'.