The advantages of air compressor booster intake are obvious, so we have to adopt it. In order to solve its problems, we propose the following solutions. The air compressor still uses a safe and reliable exhaust unloading, and a reversing valve is added at the air inlet of the air compressor. As shown in the figure, there are two air inlets on the valve, which are connected to the large air filter and the engine intake port by two pipes, which are called natural intake pipe and pressurized intake pipe. The function of the reversing valve is to realize the air compressor supercharged air intake through the booster intake pipe when the air compressor is inflated to the air tank, to ensure the air speed of the air compressor, and fully exert the advantages of the boost air intake. When the pressure of the gas storage tank reaches the limit unloading, the reversing valve is reversed under the action of the feedback signal gas, the supercharged intake pipe is closed, the natural intake pipe is opened, the natural intake of the air compressor is realized, and the temperature of the air compressor is entered. Lower air, not pressurized gas. In this way, the air compressor can achieve the unloading purpose without wasting the engine's charge air, so that the air compressor can well exert the advantages of the supercharged air intake, and the reliability of the air compressor and the engine are not affected.
In order to verify the rationality of the proposed scheme, comparative tests, reliability tests and road tests were carried out. The test results show that: after adopting the recommendations, the air compressor charging efficiency can be increased by 20%, and the 500h bench test and the 50,000 km road test are passed. The air compressor adopts the scheme of boosting intake air, exhausting unloading and increasing the reversing valve, which is economical and reliable, and can fully exert the advantages of the supercharged intake air, and can satisfy the condition that the air compressor stroke volume does not increase. The need for heavy duty car brakes.
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