BOILING COOLING SYSTEM

摘要

Provided is a compact boiling cooling system for an internal combustion engine that can operate in a stable manner. A lower end (4c) of a water jacket (4) of an engine (1) is connected to a lower tank (7c) of a radiator (7), and an upper end (4d) of a water jacket is connected to an upper part (7a) of the radiator. A substantially entire part of the radiator is located above the upper end of the coolant jacket so that the boiling cooling water is forwarded from the upper end of the water jacket to the upper part of the radiator, and the cooling water condensed in the radiator is forwarded from the lower end of the radiator to the lower end of the water jacket under the gravitational force without requiring a pump.

主权项

1. A boiling cooling system for an internal combustion engine, comprising:
a coolant jacket provided in the engine; a radiator; a coolant liquid passage communicating a lower part of the coolant jacket with the radiator; and a coolant vapor passage communicating an upper part of the coolant jacket with the radiator; wherein a coolant liquid that has boiled into a coolant vapor in the coolant jacket is forwarded to the radiator via the coolant vapor passage, and the coolant vapor that has condensed into a coolant liquid is returned to the coolant jacket via the coolant liquid passage; and wherein a substantially entire part of the radiator is located above an upper end of the coolant jacket.