ACCELERATING DEVICE OF WARM-UP FOR INTERNAL-COMBUSTION ENGINE

摘要

PURPOSE:To accelerate warm-up of an engine and to improve heating performance of a hot water type heater heating by making use of cooling water of the engine, by increasing a temperature of cooling water of the engine. CONSTITUTION:A duct of exhaust manifold water to be entered into a hot water type heater 15 for heating by passing the water through the inside of an exhaust manifold 10 or its adjacent part through a duct 9 provided with a solenoid valve 17 from a water pump 3 and a duct 100 of bypass water to be entered into the hot water type heater 15 from the water pump 3 by making a detour round the aforementioned exhaust manifold 10 are provided. A bypass valve 16 provided on the duct 100 of the bypass water is closed when an indication value of a water temperature sensor 18 is lower than that of a fixed water temperature so that cooling water of an engine flowing into the hot water type heater 15 passes through only the aforementioned duct of the exhaust manifold water. When a temperature of the cooling water is high, the cooling water is passed through a thermostat 2 to a radiator 7.