Purge valve with improved air flow control

专利名称：Purge valve with improved air flow control发明人：Santos Burrola,Manuel A. Quintana申请号：US10278619申请日：20021023

公开号：US20040079914A1公开日：20040429

专利附图：

摘要：Valve (and method for arranging the valve) are provided for a purge controlsystem in an internal combustion engine. The valve includes an inlet port operable at afirst pressure level. The valve further includes an outlet port operable at a secondpressure level different than the first pressure level. A plunger may be positioned in a

chamber for selectively communicating the inlet port with respect to the outlet port. Theplunger may be configured to move into a closed position wherein the plunger preventscommunication between the inlet and outlet ports. The plunger includes a passagewayfor communicating the outlet port with the chamber so as to equalize relative pressurebetween the outlet port and the chamber and avoid pressure-induced forces in theclosed position. The plunger is further configured to move into an open position inresponse to an actuating signal wherein the plunger enables communication between theinlet and the outlet ports. The actuation of the valve from the closed to the openposition is in temporal alignment with the actuating signal in view of the avoidance of anypressure-induced force on the plunger.

申请人：BURROLA SANTOS,QUINTANA MANUEL A.

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