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Floating cylinder liner mechanism for friction test of cylinder liner and piston in ignition state

A cylinder liner and friction technology, applied in the field of diesel engine testing, can solve problems such as the inability to reflect the influence of load friction work, achieve safe and reliable friction and friction power consumption testing, low transformation and processing costs, and simple structure

Inactive Publication Date: 2013-09-11
NO 70 INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inertia method, back dragging method and cylinder closing method all have errors due to lack of gas explosion pressure and heat loss during compression and expansion
There is uncertainty in the extension line of the oil consumption line extension method, which cannot reflect the influence of load on friction work

Method used

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  • Floating cylinder liner mechanism for friction test of cylinder liner and piston in ignition state
  • Floating cylinder liner mechanism for friction test of cylinder liner and piston in ignition state
  • Floating cylinder liner mechanism for friction test of cylinder liner and piston in ignition state

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Embodiment Construction

[0017] Such as figure 1 As shown, a floating cylinder liner mechanism for testing the friction between the cylinder liner and the piston in the ignition state, which includes a nested cylinder head 1, a sealing copper pad 2, a nested intermediate body 3, a sealing ring 4, a support guide cylinder 5, a cylinder Sleeve 6, cylinder head bolt 7, piston 8, upper embedded seam 9, stepped inner groove 10, characterized in that the lower end of the nested cylinder head 1 is connected to the upper end of the nested intermediate body 3 through the upper embedded seam 9, and the copper is sealed The pad 2 is connected between the nested cylinder head 1 and the nested intermediate body 3, and the nested intermediate body 3 is provided with an upper embedding spigot 9 and a stepped inner groove 10, and the stepped inner groove of the nested intermediate body 3 10 is connected with the cylinder liner 6; the cylinder head bolt 7 is sequentially connected with the nested cylinder head 1, the ...

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Abstract

The invention relates to a floating cylinder liner mechanism for a friction test of a cylinder liner and a piston in an ignition state. The lower end of an embedded cylinder cover (1) is connected with the upper ends of embedded intermediates (3) through upper embedded seam allowances (9), sealing copper pads (2) are connected between the embedded cylinder cover (1) and the embedded intermediates (3), the embedded intermediates (3) are provided with the upper embedded seam allowances (9) and step embedded grooves (10), and the step embedded grooves (10) of the embedded intermediates (3) are connected with the cylinder liner (6), cylinder cover bolts (7) are sequentially connected with the embedded cylinder cover (1), the embedded intermediates (3) and same-height support guide barrels (5), the piston (8) is arranged in the cylinder liner (6), and a pressure sensor is arranged between the cylinder liner (6) and a machine body. The floating cylinder liner mechanism can accurately and reliably realize floating of the cylinder liner (6) of a diesel engine in the ignition state and provide power supports for test and research of typical friction pair power consumption of a piston group of the cylinder liner.

Description

technical field [0001] The invention belongs to the field of diesel engine testing, and in particular relates to a floating cylinder liner mechanism for testing the friction force between a cylinder liner and a piston in an ignition state. Background technique [0002] At present, there are five common methods for testing the friction work of internal combustion engines, namely, the indicator diagram method, the inertia method, the reverse drag method, the cylinder closing method, and the fuel consumption extension line method (Willians-Linie). Inertia method, reverse drag method, and cylinder closing method all have errors due to the absence of gas explosion pressure and heat loss during compression and expansion. There is uncertainty in the extension line of the oil consumption line extension method, which cannot reflect the influence of load on friction work. The suspension cylinder liner mechanism adopted in the present invention can directly measure the friction force...

Claims

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Application Information

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IPC IPC(8): G01M15/04
Inventor 许永泰王建平宋吉林李宁胡清欣李鑫
Owner NO 70 INST OF CHINA NORTH IND GRP
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