Pneumatic type air intake amount adjusting system
An air intake volume adjustment, pneumatic technology, applied in the direction of engine components, machines/engines, non-mechanically actuated valves, etc., can solve problems such as complex system structure, and achieve the effect of simple structure and reasonable design
Inactive Publication Date: 2015-12-09
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
However, its design requires a special control structure, and the entire system structure is complex
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[0016] Examples of the present invention are figure 1 Shown, the present invention comprises compressor intake pipe 1, compressor 2, engine intake pipe 3, cylinder block 4, cylinder head 5, engine exhaust pipe 6, turbine 7, turbine exhaust pipe 8, catalytic bag 9, exhaust Door 10, intake valve lower section 11, intake valve middle section 12, intake valve upper section 13, control body 14, fixed body 15, first through pipe 16, second through pipe 17, elastic member 18, rotating block 19, rotating Plate 20, connecting plate 21, rotating shaft 22, first connecting pipe 23, second connecting pipe 24, the air inlet and outlet of compressor 2 are respectively connected with compressor inlet pipe 1, engine inlet pipe 3, and the inlet and outlet of turbine 7 are respectively It is connected to the engine exhaust pipe 6 and the turbine exhaust pipe 8, the engine intake pipe 3 and the engine exhaust pipe 6 are connected to the cylinder block 4, the cylinder head 5 is arranged on the cy...
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The invention belongs to the technical field of internal combustion engines and provides a pneumatic type air intake amount adjusting system. The system comprises a lower air intake valve segment, a middle air intake valve segment, an upper air intake valve segment, a control body, a fixing body, through pipes, an elastic component, a rotating plate, a rotating shaft and connection pipes. The middle air intake valve segment penetrates the rotating shaft. Four cavities are formed in the rotating shaft. Four ribs are arranged on the middle air intake valve segment. The four ribs of the middle air intake valve segment are arranged in the four cavities of the rotating shaft respectively. A rotating block is connected with the wall face of the top end of the second through pipe through the elastic component. One end of the first connection pipe is communicated with an internal cavity of the control body. The other end of the first connection pipe is communicated with an exhaust pipe of an engine. The two ends of the second connection pipe are communicated with the first through pipe and a turbine exhaust pipe respectively. According to the pneumatic type air intake amount adjusting system, when the pressure in the control body is too high, the middle air intake valve segment rotates clockwise, the valve lift becomes larger, and the air intake amount of the engine becomes larger. The pneumatic type air intake amount adjusting system is reasonable in design, simple in structure and suitable for the design of continuously variable valve lift systems.
Description
technical field [0001] The invention belongs to the technical field of internal combustion engines, and specifically relates to a pneumatic air intake adjustment system capable of realizing continuously variable intake valve lift on the principle of aerodynamics. Background technique [0002] The valve lift of the traditional gasoline engine is fixed and invariable, that is, there is only one cam profile of the camshaft, which makes it impossible for the lift to make the engine respond well in both high-speed and low-speed areas. The valve lift or cam profile design of a traditional gasoline engine is a balanced choice for the engine under all operating conditions. As a result, the engine can neither get the best high-speed efficiency nor the best low-speed torque, but it can get The most balanced performance under all working conditions. The adoption of variable valve lift enables the engine to obtain the required valve lift in both high-speed and low-speed areas, thereby ...
Claims
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IPC IPC(8): F01L13/00F01L9/02
Inventor 张慧龑花琳石磊张来涛邓康耀
Owner SHANGHAI JIAO TONG UNIV