A water-cooled and air-cooled interactive cooling device for a diesel engine

Abstract

The invention discloses a water-cooling and air-cooing interactive type heat dissipation device for a diesel engine. The water-cooling and air-cooing interactive type heat dissipation device comprises an air cooling system and a water cooling system. The air cooling system comprises a fan, an air guide hood and cooling fins arranged on a cylinder liner and a cylinder cover. The water cooling system comprises a miniature gear pump and a closed-loop pipeline connected with the miniature gear pump. The closed-loop pipeline is attached to the cylinder cover, a power input shaft of the miniature gear pump is connected with an impeller which is located at the outlet end of an exhaust by-pass pipe, and the inlet of the exhaust by-pass pipe is communicated with an exhaust pipe on the cylinder cover. The middle of the exhaust by-pass pipe is provided with a paraffin valve used for monitoring the gas temperature in the exhaust pipe. Through interaction of water-cooling heat dissipation and air-cooling heat dissipation, the heat dissipation speed of an engine in high-load work is increased, the condition that the temperature of the cylinder cover is not evenly distributed is avoided, deformation and gas leakage, caused by the too high temperature of the cylinder cover, of the cylinder cover are avoided, and the condition that multiple portions in a cylinder are ignited in high temperature work is avoided.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation of diesel engines, in particular to a water cooling and air cooling interactive heat dissipation device. Background technique [0002] With the high performance of the diesel engine and the requirement of anti-harsh environment, when the diesel engine is working at a high load, the cylinder and the cylinder head will have a large temperature rise. If the heat is not dissipated in time, the economy and reliability of the diesel engine will be directly affected. At present, the cooling method of diesel engine is to use flywheel fan and air guide cover to carry out forced air cooling on the cylinder liner, cylinder head and aluminum alloy body with heat sink, so as to reduce the working temperature of cylinder liner, cylinder head and the temperature of the whole machine. It is difficult to meet the high heat dissipation requirements with a single air-cooled heat sink in high-load and harsh ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a water-cooled and air-cooled interactive cooling device for a diesel engine. Through the interaction of water-cooled and air-cooled, the hybrid cooling device can improve the heat dissipation speed of the engine when it is working under high load, and improve the temperature distribution of the cylinder head. Inhomogeneous condition, prevent cylinder head deformation and air leakage caused by high cylinder head temperature, and improve the condition of multiple ignitions in the cylinder when working at high temperature

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