Boiling type water cooling system for engine and engine

Abstract

The invention discloses a boiling type water cooling system for an engine and the engine. The boiling type water cooling system for the engine comprises a water tank and a cooling water jacket, the cooling water jacket is located outside an engine cylinder and surrounds the engine cylinder, the cooling water jacket comprises a jacket body and end covers connected with the jacket body in a sealed mode, the front end and the rear end of the jacket body are open, the end covers comprise the front end cover and the rear end cover, the front end cover and the rear end cover are correspondingly connected with the front end opening and the rear end opening of the jacket body in a sealed mode, and the cooling water jacket is provided with a water inlet and an exhaust port communicated with the water tank. According to the boiling type water cooling system, a rocker arm component mounting position can be set on the cooling water jacket, so that a lower rocker arm is structurally prevented from being soaked in cooling water, and the problem that the service life and operation precision are affected by corrosion is avoided; when a vehicle advances, cooling wind enters from the front end opening and flows out from the rear end opening to take away heat, the problems that engine thermal efficiency is affected and the engine is iced and expands can not happen when air cooling is adopted under a cold environment, the problem that water is frequently added and drained of a motor vehicle in cold winter is solved, and the problem that the engine is damaged due to freeze is solved.

Description

technical field [0001] The invention relates to a cooling system of a power device and its application, in particular to an engine boiling water cooling system and an engine. Background technique [0002] The engine is a commonly used power device. Since the engine is a typical heat engine, it will generate more heat during operation. If the heat is not dissipated in time, it will accumulate quickly and cause the engine to malfunction or even cause a safety accident. In the prior art, in order to solve the problem of engine heat dissipation, air-cooling and water-cooling are usually used to cool the engine to prevent the accumulation of heat; wherein water-cooling has the characteristics of high cooling efficiency and stability, and the problem of engine overheating will not occur; for slightly smaller displacement If a water-cooled engine is used, the structure of the engine boiling water-cooling system is mostly used, that is, the engine block is directly cooled through th...

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Problems solved by technology

[0003] Although the above-mentioned ebullient cooling structure achieves a certain cooling effect, due to the existence of the cooling water jacket, the arrangement of the relevant parts of the engine is affected. For example, for the lower cam engine, the lower rocker arm is located in the cooling water jacket. The rocker arm assembly is corroded, which affects the service life and the normal operation of the engine; in addition, in colder regions, the cooling water in the cooling water jacket of the boiling water-cooled engine is colder before starting, and takes away too much heat after starting , The thermal efficiency is low, which leads to the initial power drop of the engine; at the same time, when the cylinder of the pure engine boiling water cooling system is below zero in winter and does not start, the cooling water in the water jacket will freeze and expand, and even cause the cylinder to rupture and damage. engine

[0004] Based on the above problems, it is necessary to improve the boiling water cooling system of the engine. From the structure, it can avoid the lower rocker arm from being immersed in the cooling water, and avoid the problems of corrosion that affect the life and running accuracy. Moreover, it will not There are problems affecting engine thermal efficiency and icing expansion

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