Coolant passage device for internal combustion engine
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United States of America
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app pub date -
Aug 17, 2016
filing date -
Aug 17, 2016
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Abstract
A coolant passage device 3 includes coolant intake pipes 11 and 12 that take in coolant from an engine, a delivery pipe 17 to a radiator communicating with the coolant intake pipes, and a delivery pipe 18 to the heater core branched from a central passage 16 connecting the coolant intake pipes with the delivery pipe to the radiator. A branch port 18a leading to the delivery pipe 18 to the heater core is opened in an upper portion in the central passage 16 in a state where the coolant passage device 3 is mounted to the engine, and the branch port 18a has a wall surface 21 surrounding the branch port and hanging down into the central passage 16. The wall surface 21 prevents bubbles contained in the coolant from entering the branch port 18a. And the coolant passage device consequently prevents coolant flow noise from occurring.
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