VACUUM PRESSURE PROVIDING DEVICE FOR RECIRCULATION VALVE OF TURBOCHARGER

摘要

A vacuum pressure supply device for a recirculation valve of a turbocharger is provided to reduce the manufacturing cost by substituting operating pressure required for the operation of a recirculation valve for opening and closing a bypass passage detouring around a turbocharger on an intake pipeline by vacuum pressure generated in a surge tank. A vacuum pressure supply device for a recirculation valve of a turbocharger comprises a bypass passage(14) detouring around a compressor(12a) of a turbocharger(12) on an intake pipeline(10) of an engine, a recirculation valve(RCV)(16) controlling the opening and closing of the bypass passage, an intensifier(20) installed to a vacuum pressure pipeline(18) of the intake side of the engine to intensify the degree of vacuum pressure, a vacuum pressure passage(22) installed to connect the recirculation valve and the intensifier, and a solenoid valve(24) installed to the vacuum pressure passage to control the opening and closing of the vacuum pressure passage, thereby to control the operation of the recirculation valve.