THROTTLE VALVE POSITION DETECTING APPARATUS

摘要

An apparatus for use with an internal combustion engine having first and second throttle valves located in series within an engine induction passage. The apparatus comprises a first sensor associated with the first throttle valve for deriving a first sensor signal indicative of a first throttle valve position and a second sensor associated with the second throttle valve for deriving a second sensor signal indicative of a second throttle valve position. The first and second minimum values of the first and second sensors are detected. The detected first and second minimum values correspond to minimum positions of the first and second throttle valves, respectively. A difference between the first and second minimum values is calculated and one of the first and second sensor signals is corrected in a direction zeroing the calculated difference. The corrected one of the first and second sensor signals is further corrected based upon a constant corresponding to a difference between the minimum positions of the first and second throttle valves.