EGR cooler system

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 c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Nigoro, Takuya, Yokoi, Tatsuhisa, Iemura, Akiyuki, Ide, Tetsuo, Sasaki, Seiji, Kusunoki, Ryouhei, Yamamoto, Toshio
Format:	Patent
Sprache:	eng
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	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.