CN2152085Y - Piston ring for ic engine pressure increase - Google Patents

Abstract

The utility model discloses a piston ring for internal-combustion engines pressure increase, which relates to a mechanical engineering field. One step (2) is arranged on the upper part of one end of the jaw opening of a ring body (1) is matched with a step (3) is arranged on lower part of the other end. The sum of the thickness of the step (2) and the step (3) is equal to the thickness of the ring body (1). Gaps (5) are individually arranged between the end parts of the step (2) and the step (3) of the upper and lower parts of the two ends and the ring body (1). The utility model has the advantages of novel, reasonable and simple structure design, easy manufacture convenient installation, convenient maintenance and good sealing performance. The utility model overcomes the defects that the opening of the piston ring of the existing internal-combustion engine has a direct gas which result in downward air flow in an engine to lower power or increase to exhaust gas which pollutes atmosphere after the machine oil of a crankcase enters a combustion chamber to burn.

Description

Piston ring for IC engine pressure increase

The utility model relates to mechanical engineering field, relates to a kind of supercharging of internal combustion engine piston ring particularly, is particularly useful for the piston ring of motor car engine.

In the prior art, direct gap is all left at the opening two ends of various internal-combustion engines (comprising air compressor) piston ring ring body, after the opening gap of service wear or each road piston ring is corresponding, have following shortcoming: 1, the pressure of firing chamber leaks to crankcase from the opening gap of piston ring body, causes engine power to descend; When 2, engine temperature was low, the gasoline of atomization badness from the cylinder wall crankcase that bleeds, had so both watered down the lubricant film on the cylinder wall along opened gap, had caused the quality of lubrication oil variation again, thereby had caused the improper wearing and tearing of motor; 3, because the suction function of crankcase makes lubricant oil enter the firing chamber from the opened gap of piston ring, make engine combustion lubricant oil, the gentle header of its piston produces carbon deposit, and causes that engine temperature raises, and produces pinking, cause engine operation slightly quick-fried, power descends, and shortens its working life; 4, lubricant oil burned back discharging has caused the pollution of atmosphere etc.

The purpose of this utility model is to overcome the above-mentioned shortcoming that leaves direct gap, provides a kind of structural design novelty, reasonable, simple, easy to manufacture, a kind of supercharging of internal combustion engine piston ring of installation and maintenance convenience and good seal performance.

The technical solution adopted in the utility model is to realize by the improvement design to the gap-clearance of piston rings place gap of existing internal-combustion engine.Its major technique feature is to be provided with the set step (3) in a step (2) and the bottom of the other end to match on the top of opening one end of ring body (1), and step (2), (3) the two thickness and equal the thickness of ring body (1), and between the step (2) of the upper and lower part at its two ends, the same ring body in (3) end (1), respectively be provided with gap (5).

Upper and lower step (2), (3) at its ring body (1) opening two ends, its thickness equates, is 1/2nd of ring body (1) thickness.

Its practical novel advantage is: 1, owing to adopted the straight-through structural design in gap (2) of ring body (1) opening, so its good seal performance, the pressure of its firing chamber does not leak to crankcase, and its increased pressure has improved the power of motor; When also having avoided low temperature simultaneously, the gasoline of atomization badness enters crankcase along piston ring gap, guarantees its proper functioning, prolongs the life-span of motor; 2, because its good seal performance, so avoided engine combustion lubricant oil phenomenon to take place, also prevent simultaneously the pollution of exhausting air effectively to atmosphere, 3, its structural design novelty, reasonable, simple, easy to manufacture, installation and maintenance are convenient, and it is not only applicable to motor car engine, and be applicable to various internal-combustion engines, be easy to popularize.

Description of drawings:

Fig. 1 is a structural front view of the present utility model;

Fig. 2 is a plan view of the present utility model;

Below in conjunction with the embodiment who provides in the accompanying drawing, describe the utility model in detail.With reference to figure 1, Fig. 2, the utility model is provided with the set step (3) in bottom of step (2) and the other end by the top of ring body (1) and ring body (1) opening one end, and gap (5), coating (4) is formed.In the embodiment, ring body (1) adopts the spheroidal graphite cast iron manufacturing, and its skin is coated with chromium layer (4), and its cross-section area is a rectangle; Ring body (1) adopts the step (2) of opening to equate with the thickness of step (3), is 1/2nd of ring body (1) thickness, after cooperation is installed, and its two thickness and the thickness that equals ring body (1), its gap (5) are 0.25mm; The diameter size of its ring body (1) can be made multiple different size model respectively according to the diameter dimension size of its piston.When using the utility model, earlier be installed in piston in the annular groove of corresponding piston by its specifications and models, (2), (3) of its ring body (1) opening are contacted, make the working clearance (5) of step (2), (3) end face remain on 0.25mm, then it is packed in the cylinder, its chromium coating (4) contacts with cylinder wall, realizes the purpose of sealing cylinder.The utility model modern design, reasonable, simple in structure, easy to manufacture, good seal performance, installation and maintenance are convenient, are applicable to various internal-combustion engines, are easy to popularize.

Claims (2)

1, a kind of supercharging of internal combustion engine piston ring that is used for, it comprises the internal layer and the skin of ring body, and its internal layer is the spheroidal graphite cast iron manufacturing, and its skin is a chromium coating; Its cross-section area is a rectangle, the opening of ring body leaves direct gap, the top that it is characterized in that opening one end of ring body (1) is provided with the set step (3) in a step (2) and the bottom of the other end and matches, and step (2), (3) the two thickness and equal ring body (1) thickness, and between the step (2) of the upper and lower part at its two ends, the same ring body in (3) end (1), respectively be provided with gap (5).

2, according to the described supercharging of internal combustion engine piston ring of claim 1, it is characterized in that upper and lower step (2), (3) at its ring body (1) opening two ends, its thickness equates, is 1/2nd of ring body (1) thickness.

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