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A turbocharging system and switching technology, which is applied in the direction of machine/engine, internal combustion piston engine, mechanical equipment, etc., can solve the problems of complex structure of the supercharging system, and achieve the effect of simple structure and reasonable design.
Inactive Publication Date: 2012-12-05
SHANGHAI JIAO TONG UNIV
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[0003] After searching the existing technical literature, it is found that Chinese patent number ZL200820226936.6, patent name: a compressor parallel supercharging device for a turbocharger, this patent technology provides a device with a variable compressor shell, It can better take into account the high and low speed conditions of the engine; but the change of its housing requires a special control mechanism, which makes the structure of the booster system more complicated
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[0014] Such as figure 1 and figure 2 As shown, the present invention includes: a first air intake pipe 1, a first compressor 2, an engine intake pipe 3, an engine 4, an engine exhaust pipe 5, a first turbine 6, a first air outlet pipe 7, and a first connecting shaft 8 , volume cavity 9, volume cavity upper wall 10, volume cavity lower wall 11, volume cavity left wall 12, volume cavity right wall 13, volume cavity front wall 14, volume cavity rear wall 15, spring 16, first connecting pipe 17, Second connecting pipe 18, third connecting pipe 19, fourth connecting pipe 20, fifth connecting pipe 21, first through pipe 22, second through pipe 23, moving body 24, second compressor 25, second turbine 26 , the second air intake pipe 27, the second air outlet pipe 28, the second connecting shaft 29 and the sixth connecting pipe 30, the air inlet and outlet of the first compressor 2 are respectively connected with the air outlet of the first air intake pipe 1, the engine intake pipe 3...
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Abstract
The invention relates to a switchable turbocharging system, belonging to the technical field of internal combustion engines. The switchable turbocharging system comprises two air compressors, an air inlet pipe, an engine, a gas exhaust pipe, two turbines, a volume chamber, connecting pipes, a moving body, a spring and two penetrating pipes, wherein the moving body is mounted in the volume chamber and is in sealed contact with the internal wall face of the volume chamber, both the first penetrating pipe and the second penetrating pipe penetrate through the left wall face and the right wall face of the moving body, and the upper wall face of the moving body is connected with the upper wall face of the volume chamber through the spring. When the engine is in low-speed working condition, the moving body moves upwards, only the first air compressor and the first turbine work, pulse energy is fully utilized, the inlet air pressure of the engine is higher, and the whole performance of the engine is better; and when the engine is in high-speed working condition, the moving body moves downwards, the first air compressor, the second air compressor, the first turbine and the second turbine simultaneously work, the pumping loss of the engine is less, and the whole performance of the engine is better. The switchable turbocharging system is reasonable in design and simple in structure and is applicable to a turbocharging system with two turbochargers.
Description
technical field [0001] The invention relates to a turbocharging system in the field of internal combustion engines, in particular to a switchable turbocharging system. 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 a large-volume exhaust pipe, the structure of the exhaust pipe system is relatively simple, the equivalent flow area of the turbine is relatively large, the pressure in the exhaust pipe is basically kept constant, and the pressure is only related to the load of the engine It is related to the rotatio...
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