Engine dual-cycle cooling system

Abstract

The invention discloses an engine dual-cycle cooling system. The engine dual-cycle cooling system comprises high-temperature and low-temperature water circulating cooling systems. The high-temperaturesystem is controlled to open or close through selection of a temperature adjuster to switch the flowing direction of cooling water according to engine loads so as to realize quick machine warming andreduction of the oil consumption. A cylinder cover and a cylinder block water jacket are maintained in serial connection in the cold starting phase of an engine, so that twice heating is performed inone cycle of the cooling water to accelerate heating of the cooling water to the greatest extent. In the machine warming and high-temperature phase with higher engine temperature, the cylinder coverand the cylinder block water jacket are maintained in parallel connection to increase the water flow of the engine to the greatest extent; and respective water flows of a cylinder block and the cylinder cover can be controlled to achieve optimal temperature so as to reduce the knocking and the oil consumption. The low-temperature system adopts an electronic water pump and a common water storage kettle; and a throttling hole is formed between the water storage kettle and the low-temperature system, so that the arrangement space and cost are reduced, the influence on the low-temperature system by the high-temperature system is reduced, the cooling effect is guaranteed, the intake temperature and the intake efficiency of the engine are effectively guaranteed, the dynamic property of the engine is exerted, and the knocking is prevented.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, in particular to an engine cooling system. Background technique [0002] Engine warm-up refers to the process in which the temperature of the engine body rises from low temperature to normal operating temperature. When the engine starts cold, due to the low temperature of the intake system and the cylinder, it is difficult for gasoline to evaporate completely, which will cause incomplete combustion, cause a large amount of C and H emissions, and form pollution. At the same time, due to the difficulty of fuel evaporation and poor combustion conditions, the problem of additionally increasing the amount of fuel is caused. In addition, the cooling water temperature of the engine is also low during the warm-up process, and the heat taken away by the cooling water of the engine increases, which increases the heat loss and further aggravates the aforementioned problems of pollution emissions...

AI Technical Summary

Problems solved by technology

[0003] For the traditional supercharged engine, it uses an air-cooled system, because the pipeline is too long, there is a delay, and it will be affected by the speed of the vehicle, so it cannot maintain the best cooling effect under any working conditions

Moreover, the supercharger cooler responsible for cooling the supercharger bearings is arranged in a high-temperature system. After the engine is stopped, the main water pump of the engine is not running, which may easily cause insufficient cooling of the bearings.

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