CN2154354Y

CN2154354Y - Super-long join piston ring

Info

Publication number: CN2154354Y
Application number: CN 93227385
Authority: CN
Inventors: 梁云河
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-23
Filing date: 1993-02-23
Publication date: 1994-01-26
Anticipated expiration: 2003-02-23

Abstract

The utility model provides a super-long overlapping piston ring for an internal combustion engine. The utility model is mainly used for pistons of various internal combustion engines, motor vehicles, boats and base sets. The utility model is composed of a gas ring and an oil ring. The utility model is characterized in that the opening position of the piston ring uses both ends which are respectively planed with the definite width to overlap, and the both ends are the both ends of the super-long opening among arc lengths. The utility model solves the problems of the piston ring of gas leakage, excess of oil, short service life, etc. The utility model has the advantages of simple manufacturing process, abrasion resistance, long service life, air-tight function, fuel saving, etc. When the multitrack piston ring is used, one or two piston rings can be reduced, and thus the cost is low.

Description

Super-long join piston ring

The utility model provides a kind of internal-combustion engine to overlap piston ring with overlength.

The piston ring that the various internal-combustion engine motor-cars of present China, ship, base are used, two kinds of compression ring and oil rings are generally arranged, rounded under the working state, have otch on the ring, the primary section shape of compression ring is a rectangle, the structural type of oil ring is similar to the rectangular cross section of compression ring, but in order to increase the pressure to casing wall, becomes one groove and process the break-through slit (hole) of some in groove at the middle car of the periphery of oil ring.Above-mentioned two kinds of rings at the joint of ring, opening occurs after the wearing and tearing of process long period, in the leakage of oil of opening gas blowby, and the working life of lowering piston ring.

At above-mentioned situation, the purpose of this utility model is to avoid not enough and a kind of overlength overlap joint piston ring of succeeding in developing in the above-mentioned prior art, it has not only overcome above-mentioned shortcoming, but also has long service life, fuel-efficient, advantages such as technology simple, reliable performance.

The utility model is to realize that like this (as Fig. 2, Fig. 4) at first makes mould by designing requirement, its shape, cross-section size except that the orphan is long piston ring required suitably to extend or dwindle according to different Motor Vehicle, ship, base model, all the other cross-section sizes still adopt the size of existing piston ring, and the overlength lap length (1) in the lonely length of piston ring is generally 4-12mm.After making mould with high-quality grey cast iron or alloy cast iron and make, the technology of process using prior art, its difference is with the long overlength lap length that increases of the orphan of compression ring (2), oil ring (5), the overlength overlap joint piston ring that to cast carries out car, mill and make its smooth surface, processing during oil ring in the middle of the periphery of oil ring car become one groove and in groove, process the break-through slit (hole) (4) of some, should note the lonely long entity place that is located at oil ring of overlength overlap joint, rather than be located at break-through slit (hole) (4) and locate.Will be through opening (3) the two ends compression ring of the overlength overlap joint piston ring overlength lap length after the processing 1/2 of its thickness of respectively shooting off, oil ring one end 1/5 of its thickness of shooting off, in addition end shoot off its thickness 4/5 so that overlap joint.

The utility model is compared with existing piston ring: under the cross-section size when not changing existing piston ring working state, the technical performance situation, the orphan of piston ring of only having extended is long, with the compression ring two ends of the lonely long opening of its overlength overlap joint 1/2 of its thickness of respectively shooting off, 1/5 the other end that oil ring two ends one end removes to dig its thickness 4/5 of its thickness of shooting off, therefore, technology is simple, wear-resisting, increase the service life, air tight fuel-efficient, use the type of multiple tracks piston ring also can reduce 1-2 road piston ring, remarkable in economical benefits.

Fig. 1 is an overlength overlap joint piston ring, the compression ring working state schematic representation, and 1 is the overlength lap length among the figure, the 2nd, compression ring.

Fig. 2 is an overlength overlap joint piston ring, compression ring nature schematic representation, and 1 is the overlength lap length among the figure, the 2nd, compression ring, the 3rd, compression ring opening.

Fig. 3 is an overlength overlap joint piston ring, the oil ring working state schematic representation, and 1 is the overlength lap length among the figure, the 4th, break-through slit (hole), the 5th, oil ring.

Fig. 4 is an overlength overlap joint piston ring, oil ring nature schematic representation, and 1 is the overlength lap length among the figure, the 3rd, oil ring opening, the 4th, break-through slit (hole), the 5th, oil ring.

Below in conjunction with accompanying drawing an embodiment (is example with Beijing 212 type piston of automobile rings) is described, at first press Fig. 2, Fig. 4 requires to make mould: the compression ring internal diameter of piston ring is 88mm, external diameter is 96mm, ring width 4.0mm, encircle thick 2.5mm, oil ring internal diameter 88mm, external diameter is 96mm, encircling thick is 5.0mm, ring width is 4.0mm, mould is carried out the back and is carried out casting with high-quality grey cast iron or alloy cast iron, then carry out car, dig, mill and reach till the designing requirement compression ring (2), the overlength lap length (1) of oil ring (5) is located the every end of two ends compression ring 1/2 of its thickness of shooting off for 4-12mm at opening (3), oil ring one end 1/5 of its thickness of shooting off, the other end 4/5 of its thickness of shooting off is so that overlap joint; The existing equipment that also can utilize automobile production producer is the arc lengthening 4-12mm with compression ring (2), oil ring (5), and after-opening is with the every end of its lap length compression ring 1/2 of its thickness of shooting off, oil ring two ends one end 1/5 of its thickness of shooting off, hold 4/5 of its thickness of shooting off in addition, oil ring overlength lap length is located at the entity place.

Claims

1, a kind of internal-combustion engine overlaps piston ring with overlength, and it is made up of compression ring (2) and oil ring (5) and it is characterized in that:

Overlength lap length (1) in a piston ring arc length is 4-12mm, at the two ends of overlength lap-joint opening (3), and the every end of compression ring (2) 1/2 of its thickness of will shooting off, oil ring (5) one ends 1/5 of its thickness of shooting off, the other end 4/5 of its thickness of shooting off;

B oil ring overlength overlap joint arc length is located at the entity place of this ring.