Turbocharging system with moving plate in front of turbine inlet

Abstract

The invention provides a turbocharging system with a moving plate in front of a turbine inlet, belonging to the technical field of internal combustion engines. The system comprises cylinders, an exhaust pipe, a connecting pipe, a turbine, a moving plate and an elastic component, wherein a fixed body is fixedly connected with an upper side wall of the connecting pipe as a whole; the sectional area of the fixed body is gradually reduced along the exhaust flow direction; the moving plate is installed in the connecting pipe; and a fixed plate is connected with the moving plate by the elastic component. When an engine is in a high-speed working condition, the moving plate moves leftward, the throat area of the connecting pipe becomes larger, the pumping loss is lower, and the overall performance of the engine is better; and when the engine is in a low-speed working condition, the moving plate moves rightward under the action of the elastic component, the throat area of the connecting pipe becomes smaller, more available energy exists in front of the turbine, the inlet pressure of the engine is higher, and the overall performance of the engine is better. The turbocharging system provided by the invention has the advantages of reasonable design and simple structure and is suitable to be provided with one side turbine at the turbine inlet.

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 a moving plate in front of a turbine inlet. 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 supercha...

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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 turbine inlet area, which can It can better take into account

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