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:
Nov. 18, 2008
Filed:
Aug. 01, 2006
Takuya Nigoro, Toyota, JP;
Tatsuhisa Yokoi, Toyota, JP;
Akiyuki Iemura, Susono, JP;
Tetsuo Ide, Toyota, JP;
Seiji Sasaki, Toyota, JP;
Ryouhei Kusunoki, Toyonaka, JP;
Toshio Yamamoto, Kashiwara, JP;
Takuya Nigoro, Toyota, JP;
Tatsuhisa Yokoi, Toyota, JP;
Akiyuki Iemura, Susono, JP;
Tetsuo Ide, Toyota, JP;
Seiji Sasaki, Toyota, JP;
Ryouhei Kusunoki, Toyonaka, JP;
Toshio Yamamoto, Kashiwara, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An EGR cooler system according to the invention includes an EGR cooler cooling device that is provided in a coolant path which is separate from the path provided with an engine cooling system which cools coolant. The EGR cooler cooling devices cools the coolant to be supplied to a water-cooled EGR cooler. The EGR cooler system also includes a water pump that circulates the coolant within the coolant path; a bypass passage through which the coolant may bypass the EGR cooler cooling device or the water-cooled EGR cooler; and a flow control valve that regulates the amount of coolant flowing into the bypass based on the temperature of the coolant flowing through the coolant path.