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:
Apr. 05, 2011
Filed:
May. 15, 2007
Andreas Gruner, Hattenhofen, DE;
Robert Sendor, Wolfratshausen, DE;
Rudiger Knauss, Kernen I.r., DE;
Bernhard Schwalk, Stuttgart, DE;
Andreas Gruner, Hattenhofen, DE;
Robert Sendor, Wolfratshausen, DE;
Rudiger Knauss, Kernen I.r., DE;
Bernhard Schwalk, Stuttgart, DE;
Mahle International GmbH, , DE;
Abstract
The invention relates to an exhaust gas recirculation device () for an internal combustion engine (), especially in a motor vehicle, said device comprising an exhaust gas recirculation line () and an exhaust gas cooler () which is built into the exhaust gas recirculation line () and connected to a cooling circuit () operating by means of a liquid coolant. The exhaust gas recirculation cooler () comprises a cooler housing () which comprises at least one exhaust gas inlet (), an exhaust gas outlet (), a coolant inlet () and a coolant outlet (), and through which a coolant flows. In order to be able to improve the adjustment of the cooling power, the exhaust gas recirculation cooler () contains, in the cooler housing () thereof, a first cooling tube arrangement () and a second cooling tube arrangement () which enables a larger heating flow between the exhaust gas and the coolant than the first cooling tube arrangement ().