| 摘要 |
PROBLEM TO BE SOLVED: To reduce fuel consumption during warming up of an engine and to perform effective control of exhaust gas. SOLUTION: During warming up of an engine 1, intake air of an engine 1 and engine oil and A/T oil are heated by cooling water heat-insulated and stored in a heat storage tank 6. Meanwhile, after completion of warming up, an intake heat-exchanger water passage 14 is closed to stop heating of intake air. This constitution promotes warming up by heating of intake air, engine oil, and A/T oil, fuel consumption is reduced and exhaust gas is controlled. Further, after completion of warming-up, since intake air is prevented from being excessively heated, fuel consumption is reduced. |
