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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10132311 B1

PDFFull Text
Date of Patent:
Nov. 20, 2018

Filed:

Aug. 06, 2014

High pressure pump

Applicant:

Continental Automotive Gmbh, Hannover, DE;

Inventors:

Uwe Nigrin, Ilmenau, DE;

Ngoc-Tam Vu, Ludwigsburg, DE;

Andreas Ederer, Walderbach, DE;

Uday Bhat, Bangalore, IN;

Thejesh Kumar Magadibyredevaru, Bangalore, IN;

Marcin Olik, Teublitz, DE;

Assignee:

CONTINENTAL AUTOMOTIVE GMBH, Hannover, DE;

Attorney:

Slayden Grubert Beard PLLC

Primary Examiner:

Kenneth J Hansen

Assistant Examiner:

Benjamin Doyle

Int. Cl.
CPC ...
F04B 53/04 (2006.01); F02M 55/04 (2006.01); F02M 59/02 (2006.01); F02M 59/10 (2006.01); F02M 59/44 (2006.01); F02M 63/00 (2006.01); F02M 59/14 (2006.01); F02M 59/46 (2006.01); F04B 11/00 (2006.01); F04B 43/02 (2006.01); F04B 53/14 (2006.01); F04B 53/16 (2006.01);
U.S. Cl.
CPC ...
F04B 53/04 (2013.01); F02M 55/04 (2013.01); F02M 59/025 (2013.01); F02M 59/102 (2013.01); F02M 59/14 (2013.01); F02M 59/44 (2013.01); F02M 59/442 (2013.01); F02M 59/46 (2013.01); F02M 63/0054 (2013.01); F04B 11/00 (2013.01); F04B 43/02 (2013.01); F04B 53/14 (2013.01); F04B 53/16 (2013.01); F02M 2200/31 (2013.01); F02M 2200/315 (2013.01); F02M 2200/9015 (2013.01);
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.

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