ANALYSIS OF THE MOTION OF PLATE TYPE SUCTION OR DISCHARGE VALVES MOUNTED ON RECIPROCATING PISTONS

摘要

The equations of motion of plate type suction and discharge valves mounted on reciprocating pistons are given. Their solutions by modal series expansion are discussed and finally given in a form that conforms to the notation and approach used in previous work. Using the definition of an equivalent pressure, it is shown that both types of valves are assisted in closing, which may result in premature closing. During opening, suction valves are assisted by the piston acceleration, but discharge valves are in general not, depending on the compression ratio. It is concluded that the piston acceleration is not a negligible effect and should be included in simulation programs.