The engine oil sump is very important for the engine. The utility model provides a compound engine oil sump
heat radiating device of oil bottom shells of an engine. The water intake pipe is connected with the sewer pipe of an engine water tank, and the water outlet pipe is connected with an engine water pump. The utility model is characterized in that: an outer oil bottom shell and an inner oil bottom shell are welded into an integral body, the middle of the integral body is provided with an interlayer and the interlayer is provided with a water intake pipe and a water outlet pipe. The compound engine oil sump
heat radiating device is provided with fast cooling, high efficiency, a wide range of application, and can substitute an engine oil cooler, an engine oil cooling fin and other engine oil heat radiating devices.