PURPOSE: An external oil cooler is provided to perform a water cooling operation or an air cooling operation at the same time using one cooler.;CONSTITUTION: An external oil cooler includes a tube(150), a first cooling pin, a coolant inflow tank(110), a coolant outflow tank, an oil inflow tank, and an oil outflow tank(140). An oil flow path(151) is formed in a longitudinal direction of the center of a tube. The coolant flow path(152) is formed in the longitudinal direction in both sides of the tube. A plurality of tubes are stacked with a constant interval. The first cooling pin is positioned between the plurality of tubes. One side of the coolant flow path is connected to the coolant inflow tank. The coolant inflow tank is connected to one side of the coolant flow path. The coolant inflow tank is connected to one side of the coolant flow path. The coolant inflow hole is formed in the coolant inflow tank. The coolant outflow tank is connected to the other side of the coolant flow path. The coolant outflow hole is formed in the coolant outflow hole. The oil inflow tank is connected to the other side of the oil flow path. The oil inflow hole is formed in the oil inflow tank. The oil outflow tank is connected to one side of the oil flow path. The oil outflow hole is formed in the oil outflow tank.;COPYRIGHT KIPO 2010
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