Patent · US Active

High pressure pump

US10132311B2 · kind B2 · utility

0Cited by

18References

12Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Uwe Nigrin · Ilmenau, DE
Ngoc-Tam Vu · Ludwigsburg, DE
Andreas Ederer · Walderbach, DE
Uday Bhat · Roding, DE
Thejesh Kumar Magadibyredevaru · Bengaluru, IN
Marcin Olik · Teublitz, DE

Key dates

Filing date	Aug 6, 2014
Grant date	Nov 20, 2018
Priority date	—
Expiry date	Sep 3, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/9015
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A high pressure pump of a common rail pump system includes a pump body having a cylinder with a piston bore and a piston reciprocally driven in the piston bore to pressurize fuel in the cylinder. The piston has an inner end located in the piston bore and an outer end outside the piston bore. A bellow having a first opening and a second opening is arranged between the piston and the pump body, wherein the piston extends through the first and second openings, wherein the bellow is connected to the pump body such that the first opening is sealed on the pump body and wherein the bellow is connected to the outer end of the piston such that the second opening is sealed on the piston. This arrangement prevents mixing of engine oil and fuel. The bellow may be connected to a drainage line via a one-way valve.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.