Pneumatic elastic pressure regulating device

Abstract

The invention provides a pneumatic elastic pressure regulating device, and belongs to the technical field of internal combustion engines. The device comprises an air discharging tube, a rotating shaft, a rotating plate, a regulating rod, a control cavity, a spring, moving bodies and a control tube; one end of the first control tube passes through the upper wall surface of the control cavity to be communicated with a cavity between the first moving body and the second moving body; the other end of the first control tube is communicated with an exhaust tube between an engine and a turbine; one end of the second control tube passes through the right wall surface of the control cavity to be communicated with an inner cavity; the other end of the second control tube is communicated with the exhaust tube between the turbine and a muffler. According to the device, the air discharging quantity of the turbine is large while the engine has a large load; the air discharging quantity of the turbine is small while the engine has a small load. The device is reasonable in design, simple in structure, and suitable for design of an engine turbine boosting system.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engine design, in particular to an aeroelastic pressure regulating device capable of realizing self-regulation of turbine deflation. Background technique [0002] Turbocharging is a technology that uses the exhaust gas generated by the operation of an internal combustion engine to drive an air compressor. The main function of turbocharging is to increase the air intake of the engine, thereby increasing the power and torque of the engine and making the car more powerful. After an engine is equipped with a turbocharger, its maximum power can be increased by 40% or even higher compared with that without a supercharger. This also means that the same engine can output more power after being supercharged. Take our most common 1.8T turbocharged engine as an example. After supercharging, the power can reach the level of a 2.4L engine, but the fuel consumption is not much higher than that of ...

AI Technical Summary

Problems solved by technology

However, the existing turbocharging systems cannot take into account the high and low speed conditions of the engine well.

[0003] After searching the existing technical literature, it was found that Chinese patent number ZL200410050996.3, patent name: a variable modular pulse conversion supercharging device for a turbocharged diesel engine, the patented technology provides an exhaust device in the exhaust pipe The device with continuously variable volume can better take into account the high and low speed conditions of the engine; but the change of the exhaust volume in the exhaust pipe is realized by moving the moving rod up and down, which requires adding a special set The control mechanism is used to control the movement of the moving rod, so that the structure of the booster system becomes more complicated

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