Air-complementing and pressure-establishing device for vehicle engine

Abstract

The invention relates to an air-complementing and pressure-establishing device for a vehicle engine, comprising an air filtering system, an exhaust gas turbocharger and an intercooler system. The intercooler system is connected to the engine; the engine is provided with an air inlet pipe and an air inlet manifold; the air inlet pipe is connected with the intercooler system; and the air inlet manifold is provided with a pressurizing device which ensures that the inside of the air inlet pipe of the engine always has the needed pressure capable of providing the rotating speed moment change of the engine. The device also comprises a valve device capable of establishing pressure. By adopting the invention, the fuel can be adequately burned, and the engine can work normally, thereby saving energy resources and reducing the environmental pollution.

Description

technical field [0001] The invention relates to a vehicle air replenishment device, in particular to a vehicle engine air replenishment and pressure building device which establishes in advance the pressure required for normal operation when the engine speed changes instantaneously in the intake pipe of the vehicle engine. Background technique [0002] Exhaust gas turbocharging technology is an important measure to improve vehicle performance. More and more vehicles have adopted this supercharging technology. On the one hand, it can improve fuel economy, and on the other hand, it can reduce exhaust pollution. However, when the vehicle is just started, there is almost no exhaust gas emission, and it can only rely on natural intake, while the exhaust gas turbocharger is driven by the exhaust gas to rotate the turbine to cause the compressor to work, so the compressor cannot work normally, thus As a result, due to the insufficient air intake of the vehicle engine, the fuel cann...

AI Technical Summary

Problems solved by technology

However, when the vehicle is just started, there is almost no exhaust gas emission, and it can only rely on natural intake, while the exhaust gas turbocharger is driven by the exhaust gas to rotate the turbine to cause the compressor to work, so the compressor cannot work normally, thus As a result, due to insufficient air intake of the vehicle engine, the fuel cannot be fully burned and black smoke is emitted, which is not only a serious pollution to the ambient air quality, but also causes a certain waste of fuel

[0003] At present, the solutions to this phenomenon on the market are: 1) Use high-quality fuel oil with ultra-low sulfur content, but the quality of fuel oil supplied in China is difficult to meet the standard; 2) Add a fuel limiting device in the fuel pump to prevent Slow down the fuel supply speed during acceleration to match the air, but this will prolong the acceleration time; 3) Add an air supply device between the air filter and the turbocharger, but the smoke suppression effect is not very good Ideal, and fuel consumption will go up

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