EGR cooler system

Details EGR cooler system EGR cooler system

2006-08-01

2008-11-18

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S540000, C123S543000

Reexamination Certificate

active

07451748

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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patent: 2004204828 (2004-07-01), None
patent: WO 2005/073535 (2005-08-01), None

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