Fuel pump (10), in particular a high-pressure fuel pump of a common-rail fuel system, with a pump piston (13) guided in a pump cylinder (11), wherein in the region of a recess (12) of the pump cylinder (11), in which the pump piston (13) is guided, an uppe...

The cylinder unit (10) has a cylinder (11) whose one side is provided with a hydraulic pressure lubricant to lubricate a surface between the cylinder and a piston (15). A peripheral surface (23) of piston is extended in a direction of a longitudinal axis (...

A sealing device (1) for sealing an annular gap formed between a reciprocating shaft (10) and a housing (11) in a fuel pump comprises a first sealing part (2) which includes a resin sealing member (21) coming into slidable sealing contact with the surface ...

A pump assembly for use in a compression ignition engine has a pumping plunger (110) that is reciprocable within a plunger bore (126) to cause pressurisation of fuel within a pump chamber (130) defined at one end of the plunger bore (126). The plunger (110...

A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is a...