CN1074505C

CN1074505C - Piston

Info

Publication number: CN1074505C
Application number: CN98110075A
Authority: CN
Inventors: 郝安阶
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-10
Filing date: 1998-02-27
Publication date: 2001-11-07
Anticipated expiration: 2018-02-27
Also published as: CN1219640A

Abstract

The present invention relates to a piston which belongs to the improvement on internal combustion engine pistons. The present invention is characterized in that a double-piston ring groove is arranged on a piston body; two piston rings are arranged in the double-piston ring groove; an upper welding block groove and a lower welding block groove are arranged in the double-piston ring groove; a welding block corresponding to the upper welding block groove and the lower welding block groove is fixed to the inner side of one end of the piston rings; a notch which inosculates with the welding block is arranged on the other end of the piston rings; thus, the present invention solves the problem of nonsynchronous phenomenon caused by the piston rings and the spring block (piece) during the movement, the gas leakage problem is effectively solved, and the oil consumption and the fume exhaust quantity of the internal combustion engines are reduced, the horsepower of the internal combustion engines is increased, and the service life of the internal combustion engines is prolonged. Because an oil scraping piece is additionally arranged on the upper part of an oil ring, the engine oil consumption is reduced.

Description

A kind of piston

The invention belongs to technical field of internal combustion engines, particularly relate to the base of living of internal-combustion engine.

Present widely used internal combustion engine all is to adopt single groove monocycle, because piston ring all has opening to close the crack, so, in compression, in the outburst process, will inevitably produce gas leak phenomenon, along with the wearing and tearing of piston and cylinder sleeve, the opened gap of piston ring is increasing, gas leak phenomenon is also just more and more serious, thereby causes the horsepower of internal-combustion engine to reduce starting difficulty, oil consumption increases, exhaust smoke level increases, befouling environment, and I am by the research of normal phase, invented a kind of piston, mainly adopted single groove dicyclo technology, and be provided with spring block or spring sheet, so just solved gas leak phenomenon greatly at the opening of piston ring, and apply for a patent, be authorized to, the patent No. is: 96227162.4, but in piston motion, asynchrony phenomenon can appear in above-mentioned piston ring and spring block or spring sheet, and phenomenon so sometimes also can leak air.In addition, existing also have opened gap with oil ring, thus stay an oily line at the opened gap place, thus it is many to make the compression ring part deposit machine oil, can cause the local machine oil of going up like this, enters the firing chamber, has increased the consumption of machine oil.

The purpose of this invention is to provide a kind of piston, solve the nonsynchronous problem of above-mentioned piston ring and spring block or spring sheet, more effectively reduce the gas leakage problem that piston produces because of the gap-clearance of piston rings bad sealing in moving in cylinder sleeve.

Technological scheme of the present invention is: it comprises piston body.Be provided with piston pin hole in the piston body bottom.Middle part at piston body is provided with oil ring groove, location and installation oil ring in the oil ring groove, be provided with the double-piston annular groove on piston body top, two piston rings are installed on the double-piston annular groove, it is characterized in that in the double-piston annular groove, being provided with welding block groove and following welding block groove, fix a welding block that adapts with upper and lower welding block groove in an end inboard of piston ring, the other end of piston ring is provided with the breach that matches with welding block.

On the piston body between double-piston annular groove and the oil ring groove, also can establish a single piston ring groove, ring installation in single piston ring groove.

Piston ring also can make following form, and its two end is made the breach that matches respectively, be provided with in the double-piston annular groove on piston body simultaneously upper and lower in locating stud or upper and lower outside fix pin.

At the oil ring upside oil-scrapping sheet that is positioned on the piston body can be set.

The present invention has following advantage: (1) is owing to adopted single groove double-piston ring structure form on piston body, and in use, the opening of two piston rings is placed on the opposite direction, spring block (sheet) to gap-clearance of piston rings place improves simultaneously, end at piston ring is directly fixed a welding block, thereby solved the nonsynchronous sometimes phenomenon of original piston ring and spring block (sheet), when so more effectively reducing piston and in cylinder sleeve, compressing and break out, produce the problem of gas leakage, thereby the horsepower of internal-combustion engine is increased, oil consumption reduces, and exhaust smoke level reduces, and prolong working life; (2) owing to be positioned at oil-scrapping sheet on the piston body upside being provided with of oil ring, thus the problem that forms an oily line owing to opened gap solved, thus avoided the phenomenon of machine oil on the compression ring part, reduced the consumption of machine oil.

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is the plan view of first embodiment of the present invention;

Fig. 2 is the rear view of Fig. 1;

Fig. 3 is the structural drawing of the piston ring of first embodiment of the present invention;

Fig. 4 is the plan view of second embodiment of the present invention;

Fig. 5 is the rear view of Fig. 4;

Fig. 6 is the structural drawing of second embodiment piston ring of the present invention;

Fig. 7 is the plan view of the 3rd embodiment of the present invention:

Fig. 8 is the rear view of Fig. 7;

Fig. 9 is the structural drawing of the 3rd embodiment piston ring of the present invention;

Figure 10 is the structural drawing of oil ring oil-scrapping sheet of the present invention (18).

Piston shown in Figure 1, comprise piston body 1, the piston body bottom is provided with piston pin hole 2, and oil ring groove 3 is established at the middle part of piston body, and oil ring 14 is installed on it, establish double-piston annular groove 4 on the top of piston body, two piston rings 5 are installed on it, are characterized in, in double-piston annular groove 4, be provided with welding block groove 7 and following welding block groove 8 (Fig. 2), welding block 6 that adapts with upper and lower welding block groove of the inboard welding of one end of piston ring 5 shown in Figure 3, the other end of piston ring is provided with the breach 9 that matches with welding block 6.

Also can be provided with a single piston ring groove 10 on the piston body 1 between double-piston annular groove 4 and the oil ring groove 3, ring installation 11 thereon.

Fig. 4-Fig. 6 is second kind of embodiment, it is the another kind of structural form of piston ring, be characterized in piston ring shown in Figure 6, its two end is made the breach 12 and 13 that matches respectively, on Fig. 4 and piston body shown in Figure 5, be provided with simultaneously upper and lower in locating

stud

14 and 15.

Fig. 7-Fig. 9 is the third embodiment, is to change locating stud in upper and lower 14 and 15 into upper and lower outside fix pin 16 and 17 to get final product in second kind of embodiment.

In each above-mentioned embodiment, also can improve, promptly, the oil-scrapping sheet 18 that is positioned on the matrix alive is set at the upside of former oil ring 14 to oil ring.

Claims

1, a kind of piston, it comprises piston body (1), be provided with piston pin hole (2) in piston body (1) bottom, be provided with oil ring groove (3) at the middle part of piston body, location and installation oil ring (14) in oil ring groove (3), be provided with double-piston annular groove (4) on the top of piston body, go up installation two piston rings (5) at double-piston annular groove (4), and the opening of two piston rings is placed on the opposite direction, it is characterized in that in double-piston annular groove (4), being provided with welding block groove (7) and following welding block groove (8), fix one with last in an end inboard of piston ring (5), the welding block (6) that following welding block groove adapts, the other end of piston ring (5) are provided with the breach (9) that matches with welding block.

2, a kind of piston according to claim 1 is characterized in that also being provided with single piston ring groove (10) on the piston body (1) between double-piston annular groove (4) and the oil ring groove (3), ring installation in single piston ring groove (11).

3, a kind of piston according to claim 1 and 2, it is characterized in that above-mentioned piston ring (5) also can make following form, its two end can be made breach (12) and (13) that match respectively, be provided with in the double-piston annular groove on piston body (1) simultaneously upper and lower in locating stud (14) and (15) or upper and lower outside fix pin (16) and (17).

4, a kind of piston according to claim 1 is characterized in that the upside in described oil ring (14), and the oil-scrapping sheet (18) that is positioned on the piston body is set.