Control valve for variable displacement compressor
摘要
<p>A valve housing of the control valve has a communication passage communicating a suction port of the compressor with a crank chamber of the compressor. A main valve is provided in the valve housing for opening and closing the communication passage. A spring member resiliently biases the main valve toward its closed position. A pressure actuated unit moves the main valve toward the open position by receiving a suction pressure of the compressor. A flow adjustment valve is disposed in the valve housing for adjusting an open degree of a leak passage and receives the discharge pressure exerting a force on the flow adjustment valve toward its closed position. The flow adjustment valve increases a leak flow rate of a fluid flowing from a discharge port of the compressor to a crank chamber through a leak passage when the compressor provides a lower discharge pressure. A correction spring is disposed between the main valve and the flow adjustment valve. The correction spring resiliently biases a valve element of the main valve toward the open position and increases in spring force with transfer of a valve element of the flow adjustment valve toward its closed position. <IMAGE></p>
申请公布号
EP1052405(A2)
申请公布日期
2000.11.15
申请号
EP20000110108
申请日期
2000.05.10
申请人
KABUSHIKI KAISHA SAGINOMIYA SEISAKUSHO;KABUSHIKI KAISHA TOYOTA JIDOSHOKKI