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:
Aug. 23, 2005
Filed:
Aug. 12, 2004
Haoran HU, Novi, MI (US);
Haoran Hu, Novi, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
One aspect of the invention relates to cooled internal EGR. Cooled internal EGR is achieved by selectively admitting exhaust to an intake manifold. A heat exchanger is used to cool the exhaust within the intake manifold. Another aspect of the invention related to an intake manifold adapted for internal EGR cooling. The manifold has a bulge to retain exhaust, whereby the exhaust admitted to the intake side for internal EGR generally does not flow past the intake manifold and significantly heat or foul any upstream portion of the system. The manifold further includes a heat exchanger for cooling the exhaust. A further aspect of the invention relates to a method of reducing the response time of an EGR system. The method comprises providing a temporary increase in an internal EGR rate during a transition from a first to a second external EGR rate.