Cross type cooling water jacket of cylinder head of three-cylinder supercharged engine

Abstract

The invention discloses a cross type cooling water jacket of a cylinder head of a three-cylinder supercharged engine. Three cooling liquid inlets of the cooling water jacket are formed in the exhaust side of the cylinder head, three cooling liquid outlets of the cooling water jacket body are formed in the air inlet side of the cylinder head, each cooling liquid inlet and the corresponding cooling liquid outlet correspond to an air cylinder, each air cylinder corresponds to a cylinder head exhaust channel area and a cylinder head air inlet channel area, a cooling water channel is formed in the nose bridge area in the middle of each cylinder head exhaust channel area, one end of each cooling water channel is communicated with the corresponding cooling liquid inlet, the other end of each cooling water channel is communicated with one side wall of an exhaust channel, and one end of each exhaust channel is connected with a cooling liquid inlet of a supercharger. According to the cross type cooling water jacket of the cylinder head of the three-cylinder supercharged engine, due to the fact that each set of the cooling liquid inlet and the cooling liquid outlet are formed in the portion, corresponding to the corresponding air cylinder, of the cylinder head, it is ensured that the cooling effects of the air cylinders are the same; due to the fact that the special cooling water channels are arranged in the nose bridge areas, the phenomenon that the nose bridge areas crack due to the overhigh temperature is avoided.

Description

technical field [0001] The invention relates to an automobile engine cooling structure, in particular to a cooling water jacket for a cylinder head of a cross-type three-cylinder supercharged engine. Background technique [0002] Automobile engines usually adopt a forced circulation water cooling system, which uses a water pump to increase the pressure of the coolant to circulate the coolant in the engine to prevent the engine from overheating or overcooling, so that the engine can be kept at an appropriate temperature under various working conditions within range. When starting the engine in a cold state, the forced circulation water cooling system must also ensure that the engine heats up quickly and reaches the normal operating temperature as soon as possible. [0003] The forced circulation water cooling system of automobile engine is composed of water pump, radiator, cooling fan, thermostat, compensation bucket, cooling water jacket of engine cylinder head and other au...

AI Technical Summary

Problems solved by technology

When the coolant flows to the rear end of the cylinder head, the temperature of the coolant gradually rises, the cooling effect is poor, and the heat absorbed is less

The cooling effect of each cylinder of the cylinder head is different, and at the same time, the lateral flow of coolant cannot provide directional cooling to some local high-temperature areas of the cylinder head, such as the nose bridge area between the exhaust passages of each cylinder of the cylinder head

In order to improve the power output of the engine and meet the emission regulations, the use of advanced engine technologies such as exhaust gas turbocharging greatly increases the exhaust temperature of the engine, and the existing cooling water jacket of the cylinder head of the automobile engine cannot meet the cooling requirements of the engine

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