Patent ID: 6343577
Filing Date: 2002-02-05
Classification: F01L,F02D

Abstract:
A control apparatus for an internal combustion engine, comprising:an armature that is associated with an engine valve; a spring to bias the armature at a neutral position which is located at an intermediate position between an open position of the engine valve and a closure position thereof; a first electromagnet to attract the armature toward the open position; a second electromagnet to attract the armature toward the closure position; a position sensor to detect a position of the armature and output a signal indicative of the position of the armature; and a controller that controls the first and second electromagnets responsive to the output signal of the position sensor so that the engine valve is displaced between the open position and the closure position and that corrects the output signal of the position sensor on the basis of two output signals of the position sensor which correspond to two different positions of the engine valve, one of the two different positions being one of the open position and the closure position upon a completion of an initialization prior to an engine start.