engine cooling jacket structure

Abstract

An engine cooling jacket structure comprises a cylinder body cooling jacket, a cylinder cover cooling jacket and an air cylinder cushion. The cylinder cover cooling jacket comprises a first cooling jacket, a second cooling jacket and a third cooling jacket. The air cylinder cushion is arranged between the cylinder body cooling jacket and the first cooling jacket. The first cooling jacket is provided with a plurality of transverse cooling channels passing through an air valve nose bridge zone and the periphery of a sparking plug hole. The air cylinder cushion is provided with a plurality of water passing holes. The first cooling jacket is provided with a plurality of water inlet holes corresponding to the multiple water passing holes. The second cooling jacket is arranged below an exhaust manifold. The third cooling jacket is arranged above the exhaust manifold. The second cooling jacket and the third cooling jacket communicate with the first cooling jacket. The engine cooling jacket structure is provided with the parts corresponding to the air valve nose bridge zone, the periphery of the sparking plug hole, the exhaust manifold and other critical zones, in addition, the parts corresponding to the air valve nose bridge zone and the periphery of the sparking plug hole are of a transverse cooling structure, the structure is reasonable, an integrated exhaust engine can be effectively cooled, and the effect that all cylinders are uniform in temperature is ensured.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine cooling jacket structure. Background technique [0002] The automobile engine is a device that provides power for the automobile, which determines the power, economy and environmental protection of the automobile. As high efficiency, energy saving, and miniaturization have gradually become the current trend and focus of automotive engine development, the application of technologies such as direct injection supercharging and integrated exhaust is also increasing. [0003] The integrated exhaust technology is to integrate the exhaust manifold of the engine into the cylinder head, and at the same time use the engine cooling water for cooling, so that the cooling system has an additional heat source, so that the engine can be warmed up faster and the engine can enter high efficiency faster. working status. However, due to driving reasons in the cooling system, the water p...

AI Technical Summary

Problems solved by technology

However, due to driving reasons in the cooling system, the water pump is often arranged at the front or rear of the engine, so that the cooling of the cylinder block is often not uniform for each cylinder, and problems such as early combustion and cylinder head cracks are prone to occur.

In order to solve these problems, some engines use dual thermostat design for thermal management control, but the dual thermostat system has complex structure and thermal management control problems, which greatly increases the cost

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