Performance Improvement of a Four-Cylinder Gasoline Engine with Continuous Variable Valve Timing Mechanism Using a Three-Dimensional Cam

This paper is describes the progress of the development of continuous variable valve timing mechanism by the combination of the three-dimensional cam and the moving rocker arm, and the performance of 4 cylinder gasoline engine with this mechanism.

This continuous valve timing mechanism is very concise. Through the trial product's experiment, it proved to be reliable.

Furthermore, engine performance demonstrated high torque and low fuel consumption in wide engine speed range.