公开(公告)号：US20060201484A1

公开(公告)日：2006-09-14

申请号：US11076384

申请日：2005-03-09

申请人： Scott Shafer ,  Alan Stockner ,  Greg Hefler ,  Chris Stewart ,  Dan Rushton

发明人： Scott Shafer ,  Alan Stockner ,  Greg Hefler ,  Chris Stewart ,  Dan Rushton

IPC分类号： F02M69/46

CPC分类号： F02M39/005 ,  F02M55/002 ,  F02M59/06 ,  F02M59/102 ,  F02M59/44 ,  F02M63/0225 ,  F04B1/0408 ,  F04B1/0448 ,  F04B23/103 ,  F04B53/143

摘要： Mixing of lubrication fluid and pumped fluid within a pump can undermine lubricity of the lubrication fluid and/or contaminate the pumped fluid (e.g. fuel) with lubrication fluid. In order to reduce mixing of fluids within a high pressure pump of the present disclosure, a lubrication fluid is supplied to the high pressure pump. A low pressure pump supplies a second fluid to the high pressure pump. The pressure of the second fluid is increased within at least one piston bore of the high pressure pump. Mixing of the lubrication fluid and the second fluid is reduced by fluidly connecting a weep annulus which is opened to the at least one piston bore to a low pressure pump inlet of the low pressure pump.

摘要翻译： 泵内的润滑流体和泵送液体的混合可以破坏润滑流体的润滑性和/或用润滑流体污染泵送的流体（例如燃料）。 为了减少本公开的高压泵内的流体混合，向高压泵供给润滑流体。 低压泵将第二流体供应到高压泵。 第二流体的压力在高压泵的至少一个活塞孔内增加。 通过将开放的至少一个活塞孔的防漏环流体连接到低压泵的低压泵入口来减少润滑流体和第二流体的混合。