CN202628306U

CN202628306U - Combined type piston ring of similar diamond coating

Info

Publication number: CN202628306U
Application number: CN 201220305112
Authority: CN
Inventors: 高静; 袁代华; 邓金智; 斯明玉
Original assignee: Chengdu Fanxinjia Technology Co Ltd
Current assignee: Chengdu Fanxinjia Technology Co Ltd
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2012-12-26
Anticipated expiration: 2022-06-28

Abstract

The utility model provides a combined type piston ring of a similar diamond coating, and the combined type piston ring is mainly used for solving the problems of air mixing, oil mixing, poor wear resistance and the like of the piston ring. The piston ring comprises a first piston ring and a second piston ring which are arranged in a same ring slot and are combined for use, and gaps are formed on the first piston ring and the second piston ring. The combined type tin plating piston ring is characterized in that the included angles between the gaps and the end surface are 45 degrees, the thickness of the outer ring side of the first piston ring is one fifth of that of the inner ring side of the first piston ring, the thickness of the outer ring side of the second piston ring is five times of that of the inner ring side of the second piston ring, and the radiuses of inner circles and outer circles of the first piston ring and the second piston ring are equal; chromium plating surface treatment layers are arranged on the outer circumference surfaces of the first piston ring and the second piston ring, and semi-stable state amorphous carbon coatings are arranged on the chromium plating surface treatment layers. The combined type piston ring is widely used in the air cylinder of an automobile engine.

Description

A kind of compound piston ring of diamond-like coating

Technical field

The utility model relates to a kind of piston ring, particularly a kind of compound piston ring that is installed on a kind of diamond-like coating in the car combustion engine piston.

Background technique

Internal-combustion engine is as a kind of machinery powered by conventional energy, and oneself obtains promotion and application in daily life widely.Because internal-combustion engine is through making fuel (like gasoline, oil etc.) produce heat energy in the cylinder interior burning; Again this heat energy is directly converted into the motor of power and heating power; Therefore, the piston ring that is used to seal, control oil and heat transfer effect is just to the operational efficiency of internal-combustion engine and whether can critical effect be arranged stable operation.

At present, the internal-combustion engine piston ring that adopts on the market is because the needs of assembling all are made into a metal cirque with fracture.Yet in long-term using process, the fracture slit of this metal cirque can be increasing, and then can influence sealing, control oil and the heat-transfer effect of internal-combustion engine, and inner cylinder pressure is reduced, and increased gas blowby, scurries oil, and amount has a strong impact on the stable of engine performance.And at present; The surface treatment mode that piston ring adopts mainly is that nitriding treatment or chromium plating are handled; High speed development along with automobile industry; The motor of high-power, high moment of torsion, high output is more designed, and this becomes strict more with regard to feasible requirement to the motor auxiliary component, as the most crucial component of motor---piston ring will face more challenges.Common nitriding treatment or chromium plating processing layer can not satisfy the demands gradually, and mainly show: 1, coating hardness is low, and abrasion resistance properties is poor; 2, the friction factor of coating is big, and is big to the aggressiveness of cylinder sleeve, tension cylinder poor performance, and can cause frictional loss big, unfavorable to energy-conserving and environment-protective.The above-mentioned technical problem so need to be resolved hurrily.

The model utility content

The purpose of the utility model is to provide a kind of compound piston ring that can improve the diamond-like coating of motor sealability, high abrasion, high tensile cylinder property and low friction set attribute.

For realizing that above-mentioned purpose the utility model adopts following technological scheme:

A kind of compound piston ring of diamond-like coating; Comprise and be arranged on the first piston ring and second piston ring that combination is used in the same annular groove; Be provided with the gap on the first piston ring and second piston ring, it is characterized in that: said gap and end face angle are 45 °, and said first piston ring outer rim side thickness is 1/5th of interior ring side; The said second piston ring outer rim side thickness is 5 times of interior ring side, and its interior circle radius of the first piston ring and second piston ring, exradius all equate; The said first piston ring and the second piston ring excircle face are provided with the chrome-plated surface processing layer, and said chrome-plated surface processing layer is provided with the metastable state amorphous carbon coating.

The 180 ° of settings of staggering each other of the said first piston ring and second piston ring gap.

The utlity model has following beneficial effect:

Because the utility model adopts above technological scheme; The said first piston ring and second piston ring can effectively carry out shutoff to its opened gap each other; Effectively reduced air leak amount, and, reduced the aggressiveness of piston ring cylinder sleeve owing on piston ring face, be provided with the metastable state amorphous carbon coating; The tension cylinder property of ring is provided, has prolonged the working life of piston ring greatly.

Description of drawings

Fig. 1 is the utility model first piston loops composition;

Fig. 2 is the utility model second piston ring structure figure;

Fig. 3 is the utility model first piston ring and the second piston ring assembled state figure.

Embodiment

Referring to Fig. 1, Fig. 2, Fig. 3; The compound piston ring of this a kind of diamond-like coating comprises being arranged on the first piston ring and second piston ring that combination is used in the same annular groove, is provided with the gap on the first piston ring and second piston ring; Said gap and end face angle are 45 °; Said first piston ring outer rim side thickness is 1/5th of interior ring side, and the said second piston ring outer rim side thickness is 5 times of interior ring side, and its interior circle radius of the first piston ring and second piston ring, exradius all equate; The said first piston ring and the second piston ring excircle face are provided with the chrome-plated surface processing layer, and said chrome-plated surface processing layer is provided with the metastable state amorphous carbon coating.First piston ring and 180 ° of settings of second piston ring gap symmetry.

Claims

1. the compound piston ring of a diamond-like coating; Comprise and be arranged on the first piston ring and second piston ring that combination is used in the same annular groove; Be provided with the gap on the first piston ring and second piston ring, it is characterized in that: said gap and end face angle are 45 °, and said first piston ring outer rim side thickness is 1/5th of interior ring side; The said second piston ring outer rim side thickness is 5 times of interior ring side, and its interior circle radius of the first piston ring and second piston ring, exradius all equate; The said first piston ring and the second piston ring excircle face are provided with the chrome-plated surface processing layer, and said chrome-plated surface processing layer is provided with the metastable state amorphous carbon coating.

2. the compound piston ring of a kind of diamond-like coating according to claim 1 is characterized in that: the 180 ° of settings of staggering each other of the said first piston ring and second piston ring gap.