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1. 发明申请

US20130343937A1 OIL PUMP WITH SELECTABLE OUTLET PRESSURE 有权
标题翻译：具有可选择出口压力的油泵
公开(公告)号：US20130343937A1
公开(公告)日：2013-12-26
申请号：US13981467
申请日：2012-01-27
申请人： Matthew Williamson , Ken T. Takamatsu-Unuvar , Darrel F. Greene
发明人： Matthew Williamson , Ken T. Takamatsu-Unuvar , Darrel F. Greene
IPC分类号： F04B49/22
CPC分类号： F04B49/22 , F01M1/16 , F04B53/18 , F16N23/00
摘要： An oil pressure relief valve for use in the oil pump lubrication system of an internal combustion engine is controlled by both oil pump outlet pressure and by pilot pressure from a pilot valve which is selectively applied by a control member, preferably a two-way valve that is operated by the engine control module. The pilot valve selectively supplies one of the oil pump outlet pressure or the engine gallery pressure to the control member which selectively supplies pilot valve pressure to the oil pump pressure relief valve which has a single piston. The pilot valve includes first and second pistons for selectively controlling back pressure from the pressure relief valve and for managing changes in oil pressure due to changes in the engine gallery to maintain a virtually constant pressure even as oil pump speed increases when the control member connects the pilot valve to the pressure relief valve resulting in a fuel economy benefit and improved control of the oil pump pressure.
摘要翻译：用于内燃机的油泵润滑系统的油压释放阀由油泵出口压力和先导压力由控制构件选择性地施加的先导阀控制，优选地是双向阀，由发动机控制模块操作。先导阀选择性地将油泵出口压力或发动机油缸压力中的一个提供给选择性地向具有单个活塞的油泵压力释放阀供给先导阀压力的控制构件。先导阀包括第一和第二活塞，用于选择性地控制来自减压阀的反压力，并且用于管理由于发动机工作室的变化引起的油压变化，以便即使当控制构件连接先导阀到减压阀，导致燃油经济性的好处和油泵压力的改进控制。

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