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Diamond-like carbon membrane piston ring

A piston ring and carbon film technology, which is applied in the field of piston rings, can solve the problems of wear resistance, elasticity and service life of the piston ring, such as the unsatisfactory bonding strength between the diamond-like carbon film layer and the base material of the piston ring, etc.

Inactive Publication Date: 2013-01-30
浙江普礼汽配制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But even so, the wear resistance, elasticity, service life of the piston ring and the bonding strength between the diamond-like carbon film layer and the piston ring base material are still unsatisfactory.

Method used

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  • Diamond-like carbon membrane piston ring
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  • Diamond-like carbon membrane piston ring

Examples

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0016] The structure of the piston ring designed by the present invention takes the oil ring of the piston ring in the engine as an example figure 1 As shown, it consists of a ring body 1 and a spring 2, wherein the coil spring 2 is tightly sleeved on the recessed part 3 of the ring body 1, and a stretched gap 4 is formed at one end of the ring body 1, On the outer periphery of the ring body 1 is a concave ring groove 5 , and on the bottom of the concave ring groove 5 there are a plurality of through holes 6 distributed in the circumferential direction.

[0017] figure 2 , image 3 It is a cross-sectional view of the piston ring. It can be seen from the figure that the outer layer of the base material 7 of the ring body 1 is sequentially combined with a multi-layer intermediate layer 8, and the outer periphery of the intermediate layer 8 is covered with...

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PUM

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Abstract

The invention discloses a diamond-like carbon membrane piston ring and aims to provide the diamond-like carbon membrane piston ring which is better than an existing piston ring in aspects of abrasive resistance, elasticity, and bonding strength between a diamond-like carbon membrane layer and a base piston ring material. A multi-layer type interlayer is sequentially bonded on the outer layer of the base piston ring material, and a diamond-like carbon membrane is covered on the outer periphery of the interlayer. The diamond-like carbon membrane piston ring is characterized in that the interlayer comprises a chromium nitride layer and a titanium carbide layer which are sequentially bonded on the outer sphere of the base piston ring material. A transition structure with a hardness gradient gradually increasing from the core to the surface of the piston ring enables the surface of the piston ring to have high hardness, especially have great elasticity and higher bonding strength with the base material, so that great low-abrasion speed and low-friction factor are realized, and the diamond-like carbon membrane piston ring meets requirements of environmental protection and is long in service life.

Description

technical field [0001] The invention relates to a piston ring for an engine, in particular to a diamond-like carbon film piston ring with wear resistance and low friction factor. Background technique [0002] At present, the pistons in the engine are usually two to three friction components, such as gas rings and oil rings, which are usually called piston rings. The air ring is designed as a strip-shaped annular body, and it is installed on the piston to form a tight connection with the cylinder. In addition to sealing the cylinder, the oil ring mainly plays the role of scraping oil after oil distribution. The engine oil will not overflow into the combustion chamber, because the oil film on the cylinder wall is supplied by the oil ring, and when the engine is working, the oil ring is responsible for scraping off the excess oil on the cylinder wall, while the traditional piston ring has a great impact on the overall strength. There are certain deficiencies in the elastic eff...

Claims

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Application Information

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IPC IPC(8): F02F5/00
Inventor 吕万杰
Owner 浙江普礼汽配制造有限公司
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