Exhausting type water outlet pipe for engine

Abstract

The invention discloses an exhausting type water outlet pipe for an engine. The water outlet pipe comprises a large circulating pipe and a small circulating pipe which are fixed to each other; and an exhausting hole is formed in the wall of the large circulating pipe and is closed through an exhausting screw. According to the water outlet pipe, the large circulating pipe and the small circulating pipe of a cooling circulating system of the engine are integrated, the number of special pieces for the engine is reduced, a cooling loop is simpler, the cost is lower, the water leakage rate of a cooling system is reduced, meanwhile, the closable exhausting hole is formed in the large circulating pipe, and gas in a cooling pipeline can be effectively exhausted.

Description

technical field [0001] The invention relates to the field of engine parts, in particular to an exhaustable engine water outlet pipe. Background technique [0002] The water outlet pipe is an important component of the engine cooling system. The water outlet pipe in the existing engine usually includes a large circulation pipe, a small circulation pipe and a warm air return pipe. Circulation pipe or small circulation pipe, the warm air return pipe is used to transport the cooling water flowing out of the warm air heat exchanger to the water channel of the cylinder body. In the traditional engine cooling cycle, the large circulation pipe, small circulation pipe and warm air return pipe are The cooling pipes are independent of each other, and the cooling pipes need to be connected with rubber hoses. The cooling circuit is complicated and the chance of water leakage is high. In addition, during the use of the car, it is often encountered that the cooling water pipe leaks or the ...

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Problems solved by technology

[0002] The water outlet pipe is an important component of the engine cooling system. The water outlet pipe in the existing engine usually includes a large circulation pipe, a small circulation pipe and a warm air return pipe. Circulation pipe or small circulation pipe, the warm air return pipe is used to transport the cooling water flowing out of the warm air heat exchanger to the water channel of the cylinder body. In the traditional engine cooling circuit, the large circulation pipe, small circulation pipe and warm air return pipe are The cooling pipes are independent of each other, and the cooling pipes need to be connected with rubber hoses. The cooling circuit is complicated and the chance of water leakage is high. In addition, during the use of the car, it is often encountered that the cooling water pipe leaks or the cooling system is full of air when the coolant is replaced.

If the air is not discharged, the engine water temperature will be high, or even "boil the pot", which will reduce the viscosity of the oil inside the engine, and the internal parts of the engine will be damaged due to lack of effective lubrication. Therefore, the air in the cooling system must be exhausted

[0003] At present, there are two main ways to exhaust the cooling system: one is to directly use vacuum equipment to dry the air in the cooling system. This method is reliable and fast, but the equipment is expensive and not easy to popularize. It is only suitable for enterprise production.

The other is to manually fill the coolant. When the coolant flows into the cooling system, the internal air will be exhausted at the same time, that is, artificial air exhaustion. This method is simple and practical, and has a high popularity rate. However, this exhaust structure There is only one exhaust path, which makes the exhaust time long, and the coolant will flow out from the radiator filling port and exhaust hose during the exhaust process, resulting in waste of coolant and environmental pollution; and during the exhaust process The engine is always idling, wasting fuel

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