INTEGRALLY MOUNTED PNEUMATIC SOLENOID VALVE FOR WASTEGATE CONTROL

摘要

A turbocharger for internal combustion engines having a valve mount cast or machined integral with the compressor housing (12) and disposed along a compressor housing outside surface, the valve including a first air port (18) in communication, through a restriction orifice, with the compressor volute and at least one of a second air port (40) in communication with the first port, and a third port (20) in communication with the compressor air intake. The mount includes attachments for a solenoid valve (28) to the valve mount and a means for forming a leak-tight seal between the solenoid valve and the second and third air ports. A control system (164) for actuating the solenoid allows venting of pressure from the second air port to the third air port for application in controlling a wastegate actuator (170) or disengaging the wastegate actuator by venting pressure from the first port to the second port.