Turbo-charging system provided with moving part in exhaust pipe

Abstract

The invention relates to a turbo-charging system provided with a moving part in an exhaust pipe, belonging to the technical field of combustion engines. The turbo-charging system comprises an air cylinder, the exhaust pipe, a turbine, a baffle, the moving part and an elastic part, wherein the moving part and the back wall of the moving part are arranged in the exhaust pipe; and the back wall of the moving part is connected with the back wall of the exhaust pipe by the elastic part. When an engine is in a low-speed working condition, the moving part and the back wall of the moving part move together toward a direction far way from the back wall of the exhaust pipe, the occupied volume of exhaust gas in the exhaust pipe is relatively smaller, the pulse energy can be fully used, the intake pressure of the engine is higher, and the overall performance of the engine is superior; when the engine is in a high-speed working condition, the moving part and the back wall of the moving part move together toward a direction close to the back wall of the exhaust pipe, the volume of the exhaust gas in the exhaust pipe is relatively more, the pumping loss is lesser, and the overall performance ofthe engine is superior. The invention is reasonable in design and simple in structure and is suitable for the combustion engine with a turbine inlet and a side-arranged turbine.

Description

technical field [0001] The invention relates to a turbocharger system in the field of internal combustion engines, in particular to a turbocharger system with moving parts inside the 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 supercharging sy...

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Problems solved by technology

[0003] After searching the existing technical documents, it was found that Chinese Patent No. ZL200410050996., patent name: a variable modular pulse conversion supercharging device for a turbocharged diesel engine. The continuously variable volume device can better take into account the high and low speed conditions of the engine; however, the volume change of the exhaust gas in the exhaust pipe is realized by moving the moving rod up and down, which requires an additional set of special controls mechanism to control the movement of the moving rod, which makes the structure of the booster system more complicated

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