PNEUMATIC COMPRESSOR RECIRCULATION VALVE SYSTEM FOR MINIMIZING SURGE UNDER BOOST DURING THROTTLE CLOSING

摘要

An engine system having a compressor coupled to an engine and supplying air to an intake manifold, a throttle controlling the supply of air from the compressor to the intake manifold, a vacuum reservoir, an aspirator having its motive section in fluid communication with the air intake system upstream of the compressor and its discharge section in fluid communication downstream of the compressor and a suction port in fluid communication with the vacuum reservoir, a compressor recirculation valve having a pneumatic control chamber in fluid communication with downstream air from the compressor and in fluid communication with the vacuum reservoir, a gate valve controlling the fluid communication of the pneumatic control chamber of the compressor recirculation valve with the downstream air and the vacuum reservoir, and a bleed line having a bleed valve in fluid communication with the vacuum reservoir and the pneumatic control chamber of the compressor recirculation valve.

主权项

1. An engine system comprising:
a compressor coupled to an engine and supplying air to an intake manifold; a throttle controlling the supply of air from the compressor to the intake manifold; a vacuum reservoir; an aspirator having its motive section in fluid communication downstream of the compressor and its discharge section in fluid communication upstream of the compressor, wherein a suction port of the aspirator is in fluid communication with the vacuum reservoir; a compressor recirculation valve having a pneumatic control chamber in fluid communication with downstream air from the compressor and in fluid communication with the vacuum reservoir; a gate valve controlling the fluid communication of the pneumatic control chamber of the compressor recirculation valve with the downstream air and the vacuum reservoir; and a bleed line having a bleed valve in fluid communication with the vacuum reservoir and the pneumatic control chamber of the compressor recirculation valve.