Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshio Yamamoto0
Takuya Nigoro0
Tatsuhisa Yokoi0
Tetsuo Ide0
Akiyuki Iemura0
Ryouhei Kusunoki0
Seiji Sasaki0
Date of Patent
November 18, 2008
Patent Application Number
11496473
Date Filed
August 1, 2006
Patent Primary Examiner
Patent 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.
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