Turbocharging system with rotation speed of air compressor changeable

Abstract

A turbocharging system with rotation speed of an air compressor changeable belongs to the technical field of combustion engines and comprises an air compressor, an engine, a turbine, an air compressor connection shaft, a turbine connection shaft and gears. A first gear is arranged on the air compressor connection shaft, a second gear and a third gear are arranged on the turbine connection shaft, the number of teeth of the second gear is smaller than that of the third gear, and the first gear is meshed with the second gear. When the engine is in low speed work condition, the third gear is meshed with the first gear through a control mechanism so that the rotation speed and the efficiency of the air compressor are high, air inlet flow of the engine is large, combustion is good, and the whole machine performance is excellent. When the engine is in high speed work condition, the second gear is meshed with the first gear through the control mechanism so that the rotation speed of the air compressor is low, air inlet flow of the engine is small, explosion pressure is small, loss of pump air is small, and the whole machine performance is excellent. The turbocharging system is reasonable in design, simple in structure and suitable for turbocharging systems with exhaust pipes having no valve control mechanisms.

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 variable compressor speed. 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 system of the...

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Problems solved by technology

[0003] After searching the existing technical literature, it is found that Chinese patent number ZL200810203054.2, patent name: turbocharging system with variable supercharging mode when the turbo is placed in the middle, this patented technology provides a device with variable exhaust pipe volume , can better take into account the high and low speed conditions of the engine; but the controllable valve in the exhaust pipe is always in a high temperature environment, which is easy to cause damage to the valve, and it is also difficult to seal the valve in a high temperature environment

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