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Layered piston heat transfer test apparatus

A test device, heat transfer technology, used in measurement devices, testing of mechanical components, testing of machine/structural components, etc., to solve problems such as temperature effects

Inactive Publication Date: 2015-03-04
CHINA NORTH ENGINE INST TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a layered piston heat transfer test device in order to solve the problem of the influence of the height change of the top land of the piston on the temperature of the first ring groove area.

Method used

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  • Layered piston heat transfer test apparatus

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Embodiment Construction

[0008] Such as figure 1 As shown, a layered piston heat transfer test device includes a water pipe joint 1, a jacket 2, a water chamber 3, a cylinder liner 4, a thermocouple 5, an O-shaped rubber sealing ring 6, a gland 7, and an infrared thermometer 8. Laser 9, bolt 10, piston head 11, adjusting gasket 12, first ring 13, second ring 14, oil ring 15, oil chamber 16, piston body 17, rubber ring 18 and cooling nozzle 19, cylinder liner 4 sets In the casing 2, a water cavity 3 is formed between the casing 2 and the cylinder liner 4, and the upper and lower contact parts of the cylinder liner 4 and the casing 2 are respectively provided with an O-shaped rubber sealing ring 6 and an apron 18, which are used to control the entry and exit. The water pipe joint 1 is connected with the jacket 2 and communicated with the water cavity 3. The piston composed of the piston head 11 and the piston body 17 is installed in the cylinder liner 4, and the adjustment gasket is arranged between the...

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Abstract

The invention relates to a layered piston heat transfer test apparatus. A cylinder sleeve (4) is sleeved by a jacket (2), a water cavity (3) is arranged between the jacket (2) and the cylinder sleeve (4) in an enclosed mode, the contact portions of the upper ends and the lower ends of the cylinder sleeve (4) and the jacket (2) are respectively provided with an O-shaped rubber sealing ring (6) and a rubber ring (18), a piston composed of a piston head (11) and a piston body (17) is installed in the cylinder sleeve (4), the piston head (11) and the piston body (17) are connected through an adjusting pad (12), a gland (7) connects the cylinder sleeve (4) with the jacket (2) in a compacting mode through a bolt (10), a first ring (13) is arranged on the piston body (17), a second ring (14) is arranged on the piston body (17) and is disposed below the first ring (13), an oil ring (15) is arranged on the piston body (17) and is disposed below the second ring (14), oil cavities (16) are arranged inside the piston body (17), and a cooling nozzle (19) is arranged below the oil cavities (16). According to the invention, the piston top height is changed through the adjusting pad, and the heating state and the cooling state of the piston are effectively simulated.

Description

technical field [0001] The invention belongs to the technical field of piston heat transfer test methods, and in particular relates to a piston heat transfer test device for studying the influence of piston top land height variation on the temperature of a first ring groove region, in particular to a layered piston heat transfer test device. Background technique [0002] The high temperature of the first ring groove of the piston is the main reason for the piston ring cementation after the diesel engine has been running for a long time. The test found that when the temperature of the first ring groove exceeds 240~260℃, the carbon deposit at the bottom of the groove is particularly serious. The piston cooling oil chamber can effectively block the heat flow from the piston head to the ring area and reduce the temperature of the ring area. However, during the development of the piston, due to the influence of the shape of the combustion chamber, the cooling oil chamber can only...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 宋吉林庞铭甄洪梅葛玉霞王旭兰马军华任伟白军爱张洁王曼
Owner CHINA NORTH ENGINE INST TIANJIN