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Cylinder wall variable heat conduction structure

A heat conduction structure and variable technology, applied in cylinders, cylinder heads, engine components, etc., can solve the problems of increased frictional resistance, increased mechanical friction loss, increased heat dissipation loss, etc., to achieve safe heat dissipation and reduce fuel consumption.

Active Publication Date: 2015-08-26
江苏施耐德发电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the water temperature is too low, the temperature of the cylinder will be too low, which will increase the matching gap between the cylinder liner and the piston ring, reduce the combustion speed, increase the heat dissipation loss, and increase the viscosity of the lubricating oil, which will increase the running resistance between the parts and reduce the mechanical friction loss. to increase
These effects will reduce the engine power
When the temperature is too high, the matching gap between the cylinder liner and the piston ring will be too small, increasing the frictional resistance
The lubricating oil is also relatively thin, which affects the sealing between the cylinder and the piston ring, etc.
[0003] One of the main reasons for the high fuel consumption of automobiles at cold start is that the temperature reduces the thermal efficiency of gasoline

Method used

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  • Cylinder wall variable heat conduction structure
  • Cylinder wall variable heat conduction structure
  • Cylinder wall variable heat conduction structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] refer to figure 1 , in this embodiment, the variable heat conduction structure of the cylinder wall includes a cylinder body 100, and the cylinder body 100 is provided with a cylinder block 110 for accommodating the movement of the piston. The cooling passage 120, a heat conduction switching member for switching heat conduction substances is also arranged between the cooling passage 120 and the cylinder body 110.

[0020] refer to figure 1 , it can be seen from the figure that the cooling channels 120 are evenly distributed on both sides of the cylinder block.

[0021] refer to figure 2 , the heat conducting member includes several turns of heat exchange pipes 200 surrounding the cylinder block 110, and each heat exchange pipe 200 is provided with at least one switching channel 210, 220 on the cylinder body 100, and the switching channel 210 , 220 transport working fluids with different thermal conductivity through a pump body (not shown).

[0022] Through the func...

Embodiment 2

[0024] refer to image 3 , in this embodiment, based on the structure of Embodiment 1, the heat exchange pipe 200 contains two working fluids with different thermal conductivity, and the working fluids are divided by a rodless piston 300, by changing the cooling The working medium in the part of the heat exchange pipe 200 between the channel 120 and the cylinder 110 changes the heat conduction efficiency between the cylinder 110 and the cooling channel 120 .

[0025] The use of the rodless piston 300 prevents interference between different working fluids, makes the working area distinction between the working fluids more obvious, and facilitates precise adjustment of the heat conduction efficiency between the cylinder block 110 and the cooling channel 120 .

[0026] In the cooling state of the engine, the heat exchange pipe 200 is divided into four sections by the rodless piston 300, and the four sections include two sections 250 of high thermal conductivity working fluid ...

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Abstract

The invention provides a cylinder-wall-variable heat conducting structure, comprising an air cylinder body, wherein the air cylinder body is internally provided with a cylinder body allowing a piston to move, the periphery of the cylinder body is provided with a cooling channel allowing an engine cooling liquid to pass, and a heat-conducting switching member for switching heat-conducting matters is further arranged between the cooling channel and the cylinder body. According to the cylinder-wall-variable heat conducting structure disclosed by the invention, by means of the heat-conducting switching member, a heat-exchange pipeline between the cylinder body and the cooling channel has different heat-conducting efficiencies, so that the heat-conducting efficiency between the cylinder body and the cooling channel can be changed, during cold start of an engine, the temperature of the cylinder body can reach the optimal temperature rapidly by reducing the heat-conducting efficiency between the cylinder body and the cooling channel, and thus, the oil consumption is reduced after the cold start of the engine.

Description

technical field [0001] The invention relates to the field of internal combustion engine cooling equipment, in particular, it relates to a variable thermal conductivity structure in a cylinder body. Background technique [0002] The water temperature of the engine is not higher or lower, but it should be moderately cooled. If the water temperature is too low, the temperature of the cylinder will be too low, which will increase the matching gap between the cylinder liner and the piston ring, reduce the combustion speed, increase the heat dissipation loss, and increase the viscosity of the lubricating oil, which will increase the running resistance between the parts and reduce the mechanical friction loss. to increase. These effects will reduce engine power. When the temperature is too high, the matching gap between the cylinder liner and the piston ring will be too small, which will increase the frictional resistance. The lubricating oil is also relatively thin, which affec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F1/10
Inventor 金湖滨
Owner 江苏施耐德发电机有限公司
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