公开(公告)号：US20160138586A1

公开(公告)日：2016-05-19

申请号：US14875259

申请日：2015-10-05

Applicant: CUMMINS INC.

Inventor： John D. Crofts ,  Scott R. Simmons ,  Wesley R. Thayer ,  Bela Doszpoly ,  David M. Rix ,  Anthony A. Shaull ,  David L. Buchanan

IPC: F04B53/16 ,  F04B19/22 ,  F04B15/02 ,  F04B53/08 ,  F04B53/18 ,  F04B53/14 ,  F04B53/10 ,  F02M37/04 ,  F04B53/04

CPC classification number: F04B53/162 ,  F02M37/043 ,  F02M59/102 ,  F02M59/442 ,  F04B1/0408 ,  F04B1/0421 ,  F04B1/0448 ,  F04B15/02 ,  F04B19/22 ,  F04B53/04 ,  F04B53/08 ,  F04B53/10 ,  F04B53/14 ,  F04B53/143 ,  F04B53/18

Abstract: A fuel pump is disclosed wherein a substantially cylindrical plunger bore is provided with an annular drain groove fluidically coupled to a drain duct. A pump plunger is driven by a drive system located in a separate mechanical compartment that holds a reservoir of lubricating oil. An annular seal is provided adjacent the drain groove substantially at the end of the bore and retained in position by a seal support. Exemplary embodiments provide the drain groove and seal as being positioned immediately adjacent one another so that the seal forms a lower wall of the drain groove.

Abstract translation: 公开了一种燃料泵，其中基本上圆柱形的柱塞孔设置有流体连接到排水管的环形排水沟。 泵柱塞由驱动系统驱动，该驱动系统位于容纳润滑油的单独的机械隔室中。 环形密封件基本上在孔的端部附近设置在排水槽附近，并通过密封支撑件保持在适当位置。 示例性实施例将排水沟和密封件设置成彼此紧邻地定位，使得密封件形成排水沟的下壁。