Mitsubishi Heavy Industries Technical Review
    Vol. 50 No. 4 (2013)   Technologies that Underlie Urban Transportation Systems
    New Products
    Engine Valve Control System
    - High-speed, Highly-accurate Valve Mechanism Contributes to Development of Advanced Engine -
    MACHINERY & STEEL INFRASTRUCTURE SYSTEMS
    HYDRAULIC MACHINERY TEAM
    The Engine Valve Control system (EVC) with a high‐speed hydraulic actuator is a test device which allows a variable valve lift by driving the valve with a hydraulic actuator instead of a cam mechanism. The system offers high flexibility and high‐speed operability. The EVC system structure and recent modifications are presented here in this report. The system has been demonstrated to be a highly effective tool for engine development and combustion study through introduction to applicable engines and production experiences.

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