Variable air exhaust through flow area air exhaust pressure control type adjusting mechanism for turbocharged engine

Abstract

A variable air exhaust through flow area air exhaust pressure control type adjusting mechanism for a turbocharged engine belongs to the technical field of mechanical design and comprises an air compressor, an engine, a turbine, a volume cavity, a rotation body, a spring, a rotation rod, a rotation shaft and a rotation plate. The longitudinal sections of the volume cavity and the rotation body are both in arc shapes, the rotation plate is installed in an air exhaust pipe, the rotation plate and the rotation shaft are fixed together, the left wall of the rotation body is connected with the left wall of the volume cavity through the spring, and two ends of a connection pipe are respectively communicated with the right wall of the volume cavity and the air exhaust pipe. When pressure in the air exhaust pipe in front of the rotation plate is high, the rotation body drives the rotation plate to rotate in a counterclockwise mode, pumping loss of the engine is small, and the whole performance is excellent. When pressure in the air exhaust pipe in front of the rotation plate is low, the rotation body drives the rotation plate to rotate in a clockwise mode, available energy in front of the turbine is more, air inlet pressure of the engine is high, and the whole performance is excellent. The variable air exhaust through flow area air exhaust pressure control type adjusting mechanism for the turbocharged engine is reasonable in design, simple in structure and suitable for a turbine single inlet turbocharged system.

Description

technical field [0001] The invention relates to a turbocharger system in the technical field of mechanical design, in particular to an exhaust pressure control regulating mechanism for a variable exhaust flow area of ​​a turbocharged engine. 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, dif...

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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 the high and low speed conditions of the engine; however, the change of the turbine inlet area is realized by the rotation of the rotary handle, which requires an additional set of special control mechanisms to control the rotation of the rotary handle, so that the booster system The structure becomes more complicated

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