Cooling device for engine and/or transmission oil, in particular of an internal combustion engine

A cooling device for engine and/or transmission oil cycling through an oil trough formed with oil trough walls, the cooling device comprising:

• a plate heat exchanger forming an oil cooler in the oil trough, said plate heat exchanger being suspended in the oil trough at a defined spacing from the oil trough walls surrounding said plate heat exchanger;
• said plate heat exchanger having plates disposed to form first plate intermediate spaces therebetween conducting a coolant flow therethrough and second plate intermediate spaces conducting the oil therethrough;
• said second plate intermediate spaces having an outer opening region on an outer circumference of said plate heat exchanger, forming an inflow region for hot oil to be cooled to flow into said second plate intermediate spaces;
• and
• said second plate intermediate spaces having an outer outflow region on the outer circumference of said plate heat exchanger distally from said inflow region and connected indirectly or directly to an outer oil line connection, for cooled oil to flow out after traversing said second plate intermediate spaces and after exchanging heat with the coolant.