Air intake structure of a turbocharger in an automobile

Abstract

The invention provides an air intake structure of a turbocharger in a vehicle, belongs to the technical field of vehicle engines, and solves such technical problems as louder air leakage voice and influence on comfort in the prior art. The air intake structure comprises a pressure relief valve independent from the turbocharger, a pressure relief high-pressure pipe and a pressure relief low-pressure pipe; the pressure relief valve is arranged at the outer periphery of the turbocharger; an inlet of the pressure relief high-pressure pipe communicates with a high-pressure pipeline of the turbocharger; an outlet of the pressure relief low-pressure pipe is used for communicating with the external; and the pressure relief low-pressure pipe is connected with a high-frequency silencer for eliminating air noise in the pressure relief low-pressure pipe in series. According to the air intake structure, the pressure relief valve is separated from the turbocharger, and the pressure relief valve is independently arranged in a place far from the turbocharger, thus facilitating the arrangement of the pipelines and the high-frequency silencer, and the air leakage voice can be absorbed through structures around the pressure relief high-pressure pipe and the pressure relief valve so as to reduce the noise.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, and relates to an air intake structure of a turbocharger in an automobile. Background technique [0002] A turbocharger is actually an air compressor that compresses air to increase intake air. It uses the inertial momentum of the exhaust gas discharged from the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, which presses the air sent by the air filter pipe to pressurize it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the impeller compresses more air into the cylinder. The pressure and density of the air increase to burn more fuel. Increase the amount of fuel and adjust the engine speed accordingly. The output power of the engine can be increased. [0003] However, when the internal air pressure of the turbocharger is too high, it will be dis...

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Problems solved by technology

[0003] However, when the internal air pressure of the turbocharger is too high, it will be discharged through the pressure relief valve, which will cause a lot of noise. In the prior art, some structures have been designed to reduce this noise, such as designing a turbocharger near the turbocharger. Muffler, but the existing turbocharger and pressure relief valve are integrated, such as a kind of automotive integrated turbocharger disclosed in patent CN201410224136.0, including a turbine chamber and a supercharger, in the supercharger ( 3) An air inlet (8), a compressor impeller (9), a high-pressure end flow channel (4) and a pressure relief valve (2) are arranged inside, and the outside of the air inlet (8) is connected to the outlet of the air filter through a transfer pipe (1)

[0004] However, the above-mentioned pressure relief valves are all installed inside the turbocharger, resulting in a loud sound of deflation, which affects comfort, and because the internal space of the turbocharger is too small, it is not conducive to the arrangement of noise reduction equipment.

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