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.:
Date of Patent:
Jun. 07, 2022
Filed:
Nov. 13, 2020
Applicant:
Man Energy Solutions SE, Augsburg, DE;
Inventors:
Wolfgang Wagner, Dessau-Roßlau, DE;
Denis Kovalev, Augsburg, DE;
Markus Meixner, Augsburg, DE;
Thomas Hamann, Bernburg, DE;
Assignee:
MAN ENERGY SOLUTIONS SE, Augsburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 59/44 (2006.01); F04B 1/0421 (2020.01); F04B 53/04 (2006.01); F04B 53/16 (2006.01); F02M 59/10 (2006.01); F04B 53/00 (2006.01);
U.S. Cl.
CPC ...
F02M 59/442 (2013.01); F02M 59/102 (2013.01); F04B 1/0421 (2013.01); F04B 53/008 (2013.01); F04B 53/04 (2013.01); F04B 53/162 (2013.01);
Abstract
A piston pump as a high-pressure fuel pump of a common rail system includes: a pump cylinder; a pump piston moveably mounted in a recess of the pump cylinder, the pump piston being moveable up and down in the recess; and a leakage groove arranged in the pump cylinder in a region of the recess, the leakage groove being coupled with a leakage line configured to discharge a fuel leakage. Between the pump cylinder and the pump piston a different size pairing clearance is formed in first and second portions of the pump cylinder.