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Miniature pendulum internal combustion engine with variable compression ratio

An internal combustion engine and compression ratio technology, which is applied in the field of heat engines, can solve the problems of no micro-pendulum internal combustion engine design, affecting the effective output power of the internal combustion engine, and difficulty in designing and manufacturing a small version, so as to increase the effective output power, reduce the volume, and improve the structure. Simplified effect

Inactive Publication Date: 2004-07-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Second, due to the limitation of the structural form of the crank-link mechanism, the compression ratio is fixed, which affects the effective output power of the internal combustion engine to a certain extent. Research shows that if the compression ratio can change with the load, it will be beneficial to the internal combustion engine. load characteristics
Third, the use of complex valve trains makes tiny versions difficult to design and manufacture
Fourth, from the above-mentioned invention documents, there is no design of a miniature pendulum internal combustion engine for the purpose of a portable power generation system

Method used

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  • Miniature pendulum internal combustion engine with variable compression ratio
  • Miniature pendulum internal combustion engine with variable compression ratio
  • Miniature pendulum internal combustion engine with variable compression ratio

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Experimental program
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Embodiment

[0046] The parameters of the miniature pendulum internal combustion engine designed according to this structure:

[0047] The total displacement of the combustion chamber: 1.5ml

[0048] The total volume of the pre-compression chamber is 2.1ml

[0049] The ratio of the total volume of the combustion chamber to the total volume of the precompression chamber is: 1:1.4.

[0050] The output power is 46W / 50Hz.

[0051] Fuel: Gasoline

[0052] Its volume is: length, width and height are 50mm respectively.

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Abstract

The variable compression ratio miniature pendulum internal combustion engine relates to a miniature heat engine capable of providing power for portable power supply system. Said invention mainly comprises six plane components of output shaft, cylinder body which is arranged perpendicularly to the outupt shaft and is equipped with a central pendulum in its interior, front cylinder cover, back cylinder cover, front end cap, back end cap and flute valve, the interior of the described cylinder body possesses upper and lower two volume-different sectorial cavities which can be divided into variable volume two combustion chambers and two precompression chambers by means of the central pendulum, finally it can make output shaft output power in swing mode.

Description

technical field [0001] The invention relates to a pendulum internal combustion engine, in particular to a miniature pendulum internal combustion engine with variable compression ratio that can provide power for a portable power supply system, and belongs to the technical field of heat engines. Background technique [0002] At present, the development speed of products such as wireless phones, notebook computers, autonomous mobile robots and portable satellite transmission stations is very fast, but the power supply system for powering them is far behind the requirements of these products in terms of power supply energy density and recharge time. Most of the power sources used today are portable chemical energy storage batteries, whose main disadvantages are low energy density, short continuous operation time, and long charging time. Obviously, if a portable power system with high energy density, long continuous operation time and short energy replenishment time can be develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01C9/00F02B53/00
CPCY02T10/17Y02T10/12
Inventor 汪劲松张仕民叶佩青段广洪郭志平
Owner TSINGHUA UNIV
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