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Inlet pressure control type camshaft device

A technology of intake pressure and camshaft, which is applied to valve devices, engine components, machines/engines, etc., can solve problems such as complex system structures, and achieve the effect of simple structure and reasonable design

Inactive Publication Date: 2013-03-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its design requires a special control structure, and the entire system structure is complex

Method used

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  • Inlet pressure control type camshaft device
  • Inlet pressure control type camshaft device
  • Inlet pressure control type camshaft device

Examples

Experimental program
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Effect test

Embodiment

[0014] Such as figure 1 and figure 2 Shown, the present invention comprises: cylinder 1, piston 2, cylinder head 3, air intake passage 4, exhaust passage 5, intake valve 6, exhaust valve 7, air compressor intake pipe 8, air compressor 9, engine air intake pipe 10, turbine exhaust pipe 11, turbine 12, engine exhaust pipe 13, lever 14, tappet 15, cam 16, camshaft 17, connecting pipe 18, moving rod 19, moving body 20, volume cavity 21 and spring 22, The piston 2 is installed in the space surrounded by the cylinder 1 and is in sealing contact with the inner wall of the cylinder 1. The air outlet of the intake passage 4 and the intake port of the exhaust passage 5 are all connected with the cylinder head. The lower end face of the lower end face and the exhaust valve 7 are all in the combustion chamber, and the air inlet and outlet of the compressor 9 are respectively connected with the air outlet of the compressor inlet pipe 8 and the air inlet of the engine air intake pipe 10, ...

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PUM

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Abstract

The invention relates to an inlet pressure control type camshaft device in the technical field of machine design. The inlet pressure control type camshaft device comprises an inlet valve, an exhaust valve, a gas compressor, a turbine, a lever, a lifter, a cam, a camshaft, a volume cavity, a moving body, a connecting pipe and a spring, wherein the moving body is mounted in the volume cavity and in hermetical contact with the inner wall surface of the volume cavity, a mounting hole is formed in the left wall surface of the volume cavity, one end of a moving rod penetrates through the mounting hole in the left wall surface of the volume cavity and then is fixedly connected with the left wall surface of the moving body, and the other end of the moving rod is connected with the camshaft. When the pressure in an inlet pipe of an engine is high, the moving body can drive the moving rod to move left and then the lift of the inlet valve is increased; and when the pressure in the inlet pipe of the engine is low, the moving body can drive the moving rod to move right, and the lift of the inlet valve is decreased. The inlet pressure control type camshaft device disclosed by the invention has the advantages of reasonable design and simple structure and is suitable for valve lift variable systems of the engines.

Description

technical field [0001] The invention relates to a mechanically designed engine intake valve lift adjustment system, in particular to an intake pressure control type camshaft device. 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 improving the high-speed power and low-speed torque of the engine. [0003] After...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/047F01L13/00
Inventor 董广明陈进
Owner SHANGHAI JIAO TONG UNIV
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