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:
Jul. 26, 2016
Filed:
Apr. 05, 2013
Applicant:
Hydac Electronic Gmbh, Saarbrücken, DE;
Inventors:
Christian Groh, Gersheim, DE;
Frank Kattler, Püttlingen, DE;
Assignee:
HYDAC ELECTRONIC GMBH, Saarbrücken, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/20 (2006.01); F04B 17/04 (2006.01); F04B 53/14 (2006.01); F04B 15/00 (2006.01); F04B 17/03 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2066 (2013.01); F04B 15/00 (2013.01); F04B 17/03 (2013.01); F04B 17/042 (2013.01); F04B 53/14 (2013.01); F01N 2610/02 (2013.01); F01N 2610/148 (2013.01); F01N 2610/1433 (2013.01); F01N 2900/1808 (2013.01); F01N 2900/1811 (2013.01); Y02T 10/24 (2013.01);
Abstract
A system for exhaust gas treatment for internal combustion engines has a pump () for metered supply of a freezable substance, particularly a urea solution, to a supply device () introducing the substance into the exhaust gas flow. A compensation device () is provided as protection against damage to the system due to volume expansion when the substance freezes. The compensation device compensates for the volume expansion accompanying an increase of the fluid pressure when the substance freezes.