公开(公告)号：US20180017030A1

公开(公告)日：2018-01-18

申请号：US15545934

申请日：2015-12-02

申请人： Delphi International Operations Luxembourg S.A.R.L.

发明人： Kevin J. Laity ,  Ian Roy Thornthwaite

IPC分类号： F02M59/02 ,  F02M59/44

CPC分类号： F02M59/02 ,  F02M59/442

摘要： A plunger assembly for a high pressure fuel pump head, wherein an axial internal drilling provided in a first plunger section, and a clearance between the first and a second plunger section, are exposed to a pumping fuel pressure, and wherein a pressure gradient along an outside wall of the first section and the bore, and pressure within the drilling and clearance, results in an increasing deformation of the first section and thereby a decreasing clearance between the first section and the bore, moving towards the second section, thereby providing sealing from one end of the plunger to the opposite end.

公开(公告)号：US20180128226A1

公开(公告)日：2018-05-10

申请号：US15561123

申请日：2016-02-26

申请人： Delphi International Operations Luxembourg, S.A.R.L.

发明人： Ian Roy Thornthwaite ,  Kevin J. Laity ,  Richard Krause

IPC分类号： F02M59/10 ,  F02M59/44 ,  F04B1/04 ,  F04B39/02

CPC分类号： F02M59/102 ,  F02M59/44 ,  F02M59/442 ,  F02M63/0001 ,  F04B1/0426 ,  F04B1/0439 ,  F04B39/0284 ,  F04B39/0292

摘要： An oil lubricated common rail diesel pump includes a pumping assembly and a drivetrain assembly. The pumping assembly includes a pump housing and a plunger mounted along a pumping axis. The drivetrain assembly includes a driveshaft and a cam mounted within a first chamber of a drivetrain housing. The plunger is arranged for reciprocating linear movement along the pumping axis within a second chamber of the housing upon rotation of the cam. The drivetrain assembly also includes a guide mounted within the housing between the cam and the plunger and being adapted to receive a cam follower. At least the housing is adapted to be substantially filled with oil in use and the guide includes at least one flow passage communicating between the first chamber and the second chamber.