Turbocharger and anti-surge device thereof

Abstract

The invention discloses a turbocharger and an anti-surge device thereof. The turbocharger comprises a compressor and a turbine and is characterized in that the anti-surge device of the turbocharger comprises an air pressure measurement device, a gas pressure measurement device, a gas release valve and a control device, wherein the air pressure measurement device is arranged on an outlet pipeline of the compressor and is used for measuring the air pressure of the outlet pipeline of the compressor; the gas pressure measurement device is arranged on an inlet pipeline of the turbine and is used for measuring the gas pressure of the inlet pipeline of the turbine; the gas release valve is arranged on the outlet pipeline of the compressor, comprises an open state and a closure state and is used for releasing air in the compressor when the gas release valve is in the open state; and the control device is connected with the air pressure measurement device and the gas pressure measurement device and is used for controlling the gas release valve to be in the open state when the ratio of the air pressure to the gas pressure is larger than a preset ratio threshold value, thereby preventing the turbocharger from surging.

Description

Technical field [0001] The invention relates to turbocharging technology, and in particular to an anti-surge device for a turbocharger and a turbocharger. Background technique [0002] The exhaust gas turbocharger (hereinafter referred to as the turbocharger) consists of two main components: a turbine and a compressor. The high-temperature and high-speed gas discharged from the internal combustion engine cylinder is fed into the turbine through the exhaust pipe to push the turbine to rotate, and the turbine then drives the gas coaxially with it. The compressor impeller rotates. The compressor compresses the inhaled air to increase the pressure of the air. The supercharged air flows through the intake pipe of the internal combustion engine and is supplied to the cylinder to achieve the purpose of supercharging. [0003] Surge is one of the common faults of turbochargers, which is characterized by severe airflow fluctuations in the centrifugal compressor (the airflow is manif...

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Problems solved by technology

[0004] However, in the above-mentioned prior art, no matter whether the turbocharger surges, it always works according to the above-mentioned fixed setting, which increases the surge margin of the turbocharger and reduces the efficiency of the turbocharger. Thereby reducing the working efficiency of the diesel engine and increasing the fuel consumption and exhaust temperature of the diesel engine

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