COOLING APPARATUS FOR INTERNAL COMBUSTION ENGINE AND MOTORCYCLE INCLUDING THE SAME

摘要

A cooling apparatus includes a cooling passage provided in an internal combustion engine, a water pump, a radiator, a first passage through which the water pump and the cooling passage are connected to each other, a second passage through which the cooling passage and the radiator are connected to each other, a third passage through which the radiator and the water pump are connected to each other, and an oil cooler passage provided with an oil cooler. An in-line type thermostat is provided at any position in a portion of a cooling water circuit which leads from a first end portion to a second end portion via the second passage, the radiator, and the third passage.

主权项

1. A cooling apparatus for cooling an internal combustion engine of a motorcycle, the cooling apparatus comprising:
a cooling passage provided in the internal combustion engine and including an inlet through which cooling water flows in, and an outlet through which the cooling water flows out; a water pump including a discharge port through which the cooling water is discharged, and a suction port through which the cooling water is drawn in; a radiator including an inlet through which the cooling water flows in, and an outlet through which the cooling water flows out; a first passage connected to the discharge port of the water pump and the inlet of the cooling passage; a second passage connected to the outlet of the cooling passage and the inlet of the radiator; a third passage connected to the outlet of the radiator and the suction port of the water pump; an oil cooler passage including a first end portion connected to the second passage and a second end portion connected to the third passage, the oil cooler passage including an oil cooler; and a thermostat provided in a portion of the second passage between the first end portion and the inlet of the radiator, in the radiator, or in a portion of the third passage between the outlet of the radiator and the second end portion, the thermostat being arranged to close when a temperature of the cooling water is lower than a reference temperature and to open when the temperature of the cooling water is equal to or higher than the reference temperature.