Pressure coordination control device

Abstract

The invention discloses a pressure coordination control device and belongs to the technical field of internal combustion engines. The pressure coordination control device comprises a rotating shaft, a rotating plate, a telescopic rod, a control body, a spring, a movable body, a first connecting pipe and a second connecting pipe, wherein the rotating shaft is embedded to an exhaust pipe in front of a turbine, one end of the rotating plate and the rotating shaft are fixedly connected, one end of the first connecting pipe penetrates through the right wall face of the control body and then is communicated with the inner cavity of the control body, the other end of the first connecting pipe is communicated with a gas inflow pipe between a gas compressor and a diesel engine, one end of the second connecting pipe penetrates through the left wall face of the control body and then is communicated with a cavity below the second movable body, and the other end of the second connecting pipe is communicated with an exhaust pipe between the turbine and a silencer. Due to the pressure coordination control device, when the loads of an engine are large, the throat area of the exhaust pipe in front of the turbine is large; when the loads of the engine are small, the throat area of the exhaust pipe in front of the turbine is small. The pressure coordination control device is reasonable in design, simple in structure and suitable for design of a diesel engine turbocharging system.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engine design, in particular to a pressure coordination control device capable of realizing self-regulation of the throat area of ​​an exhaust pipe in front of a turbine. 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 spee...

AI Technical Summary

Problems solved by technology

[0003] After searching the existing technical literature, it is found that the Chinese patent number ZL201020532937.0, the patent name is a turbocharger device with a variable exhaust pipe outlet area. This patent technology provides a device with a 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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