Engine oil cooler of air cooled engine

Abstract

The invention discloses an engine oil cooler of an air cooled engine. The engine oil cooler is a condenser which is arranged at the air inlet part of a wind scooper of the engine; and an oil pipeline of the condenser is at least provided with a section of multi-row parallel form. According to the invention, the structure is reasonable, the problem that the heat transfer efficiency is reduced by the direct heat transfer between an oil inlet pipe and an oil outlet pipe, the temperature of engine oil at the outlet part is ensured, heat transfer is increased by increasing the engine oil heat transfer area, the space of a shell is utilized reasonably, and the tangential wind of a fan flywheel is utilized fully, thus the cooling effect is good.

Description

technical field [0001] The invention relates to an external condenser for an air inlet of an air-cooled engine. Background technique [0002] The air-cooled engine adopts natural air intake and forced cooling. It mainly uses the fan blades installed on the flywheel to generate wind pressure to cool the engine when the engine is running. Usually, the oil temperature (heat load) of the air-cooled engine only uses the cooling fins and heat sinks of the engine itself. The heat transfer of the body performs heat exchange to control the temperature of the engine oil. However, when the power is enhanced, the heat load of the engine will be very high, causing the temperature of the engine oil to rise sharply. When the temperature of the engine oil rises above 120°C, the lubrication kinematic viscosity of the oil The sharp drop requires timely heat dissipation to ensure the continuous operation of the engine in good condition and long service life. [0003] Before the present invent...

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Problems solved by technology

[0003] Before the present invention was made, in the prior art, after the lubricating oil was cooled, the problem of maintaining the temperature after cooling was often ignored. Generally, double rows of oil pipes in and out of the condenser were used, and they were in direct contact, which caused the problem of heat transfer short circuit, directly Affect the oil outlet temperature, greatly reducing the heat transfer efficiency

The above-mentioned lubricating oil cooling method is difficult to achieve a good cooling effect, and then the poor cooling effect of the lubricating oil will often cause the engine temperature to rise, the output power will drop, and it is easy to cause failures such as pulling tiles and cylinders, and the engine reliability cannot be guaranteed.

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