VARIABLE CAM TIMING CONTROL MODULE AND METHOD OF OPERATION

摘要

A variable cam timing control module for an internal combustion engine having at least one cam position sensor, at least one solenoid to actuate a cam phasing device, a driven outer cam sprocket position sensor and a microcontroller. The microcontroller may receive a set point angle signal from the engine's Electronic Control Unit, which it compares with input signals from the driven outer cam sprocket position sensor and the at least one cam position sensor to determine the proper cam phase angle. The microcontroller then sends a signal to the at least one solenoid to adjust the corresponding cam phasing device so that the cam phase angle matches the commanded set point.