| 摘要 |
An oil cooler for an internal combustion engine comprises a housing for containing a coolant and an axially disposed center fixing tube extending through the housing. A plurality of plate-like oil chambers are disposed within the housing, each being formed by a pair of oppositely profiled cooling plates. The oil chambers are spaced apart axially along the fixing tube so that the space between the oil chambers forms cooling channels for a coolant. An oil inlet and outlet extend parallel to the fixing tube and communicate with all the oil chambers for supplying and discharigng oil directly from all the oil chambers. The oil inlet and outlet, as viewed in cross-section, lie along radii from the central axis of the oil chambers which are at an acute angle relative to one another, and a partition extends radially in the acute angle between the inlet and outlet so that oil supplied to the oil cooler is directed tangentially around the fixing tube toward the outlet. Coolant inflow and outflow pipes are provided for introducing a coolant, through openings in the housing, into the cooling channels between the oil chambers. The coolant inflow and outflow openings are disposed relative to one another to form an acute angle, thereby to cause coolant introduced into the housing to flow through the cooling channels tangentially. The coolant inflow and outflow pipes and the oil inlets and outlets are arranged relative to one another so that oil and coolant introduced into the oil cooler flow in opposite directions.
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