This paper is aimed at Mechanical-Hydraulic Confined Piston Engine flat valve system working process modeling analysis, on the basis of the theory of classical pump valve, with integrated consideration of liquid's compressibility, influence of pump-valve's kinematics Westphals Phenomena on liquid consistency in cylinder and also consideration of distributing valve system's dynamic characters, the kinematics differential equations of MHCPE valve system are established. this model is the key that establishes the discipline of Mechanical-Hydraulic Confined Piston Engine flat valve system working process (displacement, velocity, acceleration and impact stress), lag backflow, work stability, flow pulsation and variation discipline of volumetric efficiency, etc. And the study about the modeling analysis, for its prototype development, provides theoretical support.
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