Turbocharging system with exhaust pipe having variable outlet area

Abstract

A turbocharging system with an exhaust pipe having variable outlet area belongs to the technical field of internal combustion engines and comprises cylinders, the exhaust pipe, a turbine, a cavity, moving plates and an elastic component. The cavity is a uniform-section pipe and mounted in front of the exhaust pipe, the moving plates are mounted inside the cavity, and the first moving plate is connected with the second moving plate through the elastic component. When an engine is in a low-speed running state, the moving plates move to the direction distant from the back wall of the cavity, the outlet area of the exhaust pipe is small relatively, available energy in the front of the turbine is high, intake pressure of the engine is high, and the integral performance of the engine is excellent. When the engine is in a high-speed running state, the moving plates move to the direction close to the back wall of the cavity, the outlet area of the exhaust pipe is larger relatively, pumping loss is lower, and the integral performance of the engine is excellent. The turbocharging system is reasonable in design, simple in structure, and suitable for turbocharging systems with one turbine inlet and laterally arranged turbine.

Description

technical field [0001] The invention relates to a turbocharging system in the field of internal combustion engines, in particular to a turbocharging system with variable outlet area of ​​an exhaust pipe. Background technique [0002] With the development of society and the improvement of environmental protection requirements, the application of engine supercharging technology is becoming more and more extensive. Most of the engines with medium and high power adopt turbocharging technology to improve power and reduce fuel consumption. The two basic types of turbocharging systems are constant pressure supercharging system and pulse supercharging system. Constant pressure supercharging system, each cylinder shares an exhaust pipe with a large volume, the structure of the exhaust pipe system is relatively simple, the pressure in the exhaust pipe is basically kept constant, the pressure is only related to the load and speed of the engine, different cylinder numbers The superchar...

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Problems solved by technology

[0003] After searching the existing technical literature, it is found that Chinese patent number ZL201020532937.0, patent name: turbocharger device with variable exhaust pipe outlet area, this patent technology provides a device with continuously variable exhaust pipe outlet area , can better take into account the high and low speed conditions of the engine; but the change of the outlet area of ​​the exhaust pipe is realized by the rotation of the rotary handle, which requires adding a special control mechanism to control the rotation of the rotary handle, so that Make the supercharging system structure more complicated

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