HEAT EXCHANGER FOR VEHICLE

摘要

A heat exchanger (1) includes: a first flow passage (11) for an engine coolant; a second flow passage (12) for an engine oil; a third flow passage (13) for a transmission oil; and plural plates (10) that partition the first, the second and the third flow passage. The first flow passage (11) is configured to allow the engine coolant to be heat-exchanged with both the engine oil and the transmission oil via the plates (10). The second flow passage (12) is arranged in the same layer with the third flow passage (13). The first flow passage (11) is arranged in a different layer from the layer of the second and the third flow passage (13). The third flow passage (13) is disposed on an upstream side and second flow passage (12) is disposed on a downstream side in a flow direction of the engine coolant in the first flow passage (11).