Abstract: In electronic control diesel fuel injection systems of modern diesel engines, the high-speed, powerful solenoid valve is the key element to determine the performance of the systems. And there is a thin gap of fuel film exists between the armature and solenoid. This squeeze film directly influences the dynamic response characteristics of the valve. An analysis by laminar flow is undertaken to evaluate squeeze film behavior and determine optimum venting arrangement for improved valve performance.

Key words: Electronic control diesel fuel injection system, High-speed powerful solenoid valve, Squeeze film