ENGINE COOLING DEVICE FOR CONSTRUCTION MACHINE

摘要

PROBLEM TO BE SOLVED: To prevent occurrence of cavitation in a suction side of a pump supplying a fan motor with water in a structure driving a fan motor for rotating a cooling fan sending cooling air to a radiator by using engine cooling water. SOLUTION: A fan flow passage 5 is formed with branching off a circulation flow passage of engine cooling water. The fan motor 9 driving the cooling fan 8 and a fan pump 10 pumping water to the fan motor 9 are arranged in the fan flow passage 5. And pressurizing pump 7 pressurizes water supplied to the fan pump 10 from the circulation flow passage 3. COPYRIGHT: (C)2005,JPO&NCIPI