| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cooling device for an internal combustion engine, allowing both temperature raising performance and cooling performance in a heat exchanger. <P>SOLUTION: The cooling device for an internal combustion engine includes: an engine oil cooler passage 230, connected to a part on the downstream side of a water jacket 2W of the engine 1 and to a water pump 10 and provided with an engine oil cooler 60 as a heat exchanger in the passage; a transmission oil cooler passage 240, provided with a transmission oil cooler 70 as a heat exchanger; and an EGR cooler passage 250 provided with an EGR cooler 80 as a heat exchanger. Then, there is provided a rotary valve 20 which, during warming up of the engine, makes the engine oil cooler passage 230, transmission oil cooler passage 240 and EGR cooler passage 250 communicate with a suction port of the water pump 10, and meanwhile, during cooling request of the engine, makes the engine oil cooler passage 230, transmission oil cooler passage 240 and EGR cooler passage 250 communicate with a discharge port of the water pump 10. <P>COPYRIGHT: (C)2013,JPO&INPIT |
