To provide an exhaust gas recirculation system which can supply intake gas mixed with recirculated exhaust gas to an engine at a desired intake temperature to improve fuel consumption of the engine.
The exhaust gas recirculation system 1A includes: a turbocharger 2; a high-pressure intake air passage 10 connecting between a compressor 2a of the turbocharger 2 and an intake port of the engine 5; a charge air cooler 3 provided in the high-pressure intake air passage 10 and cooling the intake gas using a sub cooling circulation circuit 20; a high-pressure exhaust gas passage 11 connecting between an exhaust port of the engine 5 and a turbine 2b of the turbocharger 2; an exhaust gas reflux passage 12 branched from the high-pressure exhaust gas passage 11 and connected to the high-pressure intake air passage 10; and an exhaust gas cooler 4 provided in the exhaust gas reflux passage 12 and cooling exhaust gas using a cooling circulation circuit 30 of the engine 5. The exhaust gas reflux passage 12 is connected to the high-pressure intake air passage 10 at an upstream position of the charge air cooler 3.
| JP2011190742A | 2011-09-29 | |||
| JP2010249129A | 2010-11-04 | |||
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| JP2008057950A | 2008-03-13 | |||
| JPH08232784A | 1996-09-10 |
| WO2010104452A1 | 2010-09-16 |
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu