OIL COOLER
First Claim
1. An oil cooler comprising:
- a heat exchanger core including a plurality of plates laid one upon another to define each of an oil passage through which oil flows and an coolant passage through which coolant flows, between the plates, the plates including an uppermost plate which has a portion defining a core coolant inlet and a portion defining a core coolant outlet, the core coolant inlet and the core coolant outlet being communicated with the coolant passage; and
a flow passage control valve disposed on an uppermost part including the uppermost plate, of the heat exchanger core and including a portion defining a first coolant introduction opening through which coolant at a relatively high temperature is supplied and a portion defining a second coolant introduction opening through which coolant at a relatively low temperature is supplied, the relatively high temperature being higher than the relatively low temperature, the first coolant introduction opening and the second coolant introduction opening being changed over to be communicated with the core coolant inlet.
1 Assignment
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Accused Products
Abstract
An oil cooler includes a heat exchanger core having a plurality of plates laid one upon another to define each of an oil passage through which oil flows and a coolant passage through which coolant flows, between the plates. An uppermost plate of the plates has a core coolant inlet and a core coolant outlet. The core coolant inlet and the core coolant outlet are communicated with the coolant passage. A flow passage control valve is disposed on an uppermost part of the heat exchanger core and has a first coolant introduction opening through which coolant at a relatively high temperature is supplied and a second coolant introduction opening through which coolant at a relatively low temperature is supplied. The first coolant introduction opening and the second coolant introduction opening are changed over to be communicated with the core coolant inlet.
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Citations
6 Claims
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1. An oil cooler comprising:
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a heat exchanger core including a plurality of plates laid one upon another to define each of an oil passage through which oil flows and an coolant passage through which coolant flows, between the plates, the plates including an uppermost plate which has a portion defining a core coolant inlet and a portion defining a core coolant outlet, the core coolant inlet and the core coolant outlet being communicated with the coolant passage; and a flow passage control valve disposed on an uppermost part including the uppermost plate, of the heat exchanger core and including a portion defining a first coolant introduction opening through which coolant at a relatively high temperature is supplied and a portion defining a second coolant introduction opening through which coolant at a relatively low temperature is supplied, the relatively high temperature being higher than the relatively low temperature, the first coolant introduction opening and the second coolant introduction opening being changed over to be communicated with the core coolant inlet. - View Dependent Claims (2, 3, 4, 5)
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6. An oil cooler for a vehicle having an internal combustion engine, comprising:
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a hear exchanger core including a plurality of plates laid one upon another to define each of an oil passage through which oil flows and an coolant passage through which coolant flows, between the plates, the oil flow passage and the coolant flow passage being adjacent to each other through the plate, the plates including an uppermost plate which has a portion defining a core coolant inlet and a portion defining a core coolant outlet, the core coolant inlet and the core coolant outlet being communicated with the coolant passage; and a flow passage control valve disposed on an uppermost part including the uppermost plate, of the heat exchanger core and including a portion defining a first coolant introduction opening to which coolant at a relatively high temperature is supplied from a water jacket of the engine, a portion defining a second coolant introduction opening to which coolant at a relatively low temperature is supplied from a radiator of the engine, the relatively high temperature being higher than the relatively low temperature, and a valve member for accomplishing a changeover between a first communication of the core coolant inlet with the first coolant introduction opening and a second communication of the core coolant inlet with the second coolant introduction opening, in accordance with an operating condition of the engine.
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Specification