| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling device of an engine capable of enhancing warming-up efficiency of the engine.SOLUTION: A cooling device of an engine includes an in-head cooling water jacket 12 in a cylinder head 5, a thermostat 1, a bypass passage 4, a radiator 18, and a cooling water pump 3, and engine cooling water 15 in the in-head cooling water jacket 12 is circulated into the cooling water pump 3 through the bypass passage 4 bypassing the radiator 18. The engine cooling water 15 in the in-head cooling water jacket 12 is circulated into the cooling water pump 3 through the radiator 18 by the thermostat 1 when a water temperature of the engine cooling water 15 detected by the thermostat 1 exceeds a prescribed value. The thermostat 1 is stored in a thermostat chamber 8 provided in the cylinder head 5.SELECTED DRAWING: Figure 1 |
