CN2397337Y - Combined totally-enclosed piston and piston ring - Google Patents

Abstract

The utility model discloses a piston and a piston ring arranged in a compression system of a four-stroke cycle internal combustion engine. Both heads of the opening of the existing piston ring which are provided with arc half tenons and then lapped are circular ring shapes, three channels of single-air ring grooves of the existing piston are changed to two channels of wide-air ring grooves, two piston rings are arranged in each wide-air ring groove in parallel, and the utility model is a cylinder shape after assembled. The utility model is characterized in that half tenons with cambered surfaces are lapped with the half tenons with the cambered surfaces to seal intangible flow gas, and fuel oil can be saved by a double-ring structure. The utility model has the advantages of strong power performance, durability and reliability and easy starting. The piston rings can be automatically compensated after worn, power output is persist and stable, and service life is extended exponentially. The defects that an opening gap is enlarged gradually in operation, over proof standard of oil consumption is caused, power is insufficient and black smoke overflows of the existing piston ring are overcome.

Description

The hermetically sealed piston of combined type, piston ring

The utility model relates to four-stroke internal combustion engine compression system critical piece, the particularly a kind of hermetically sealed piston of the combined type that uses on the four-journey explosive motor, piston ring of being contained in.

Existing piston, piston ring and energy-saving piston ring, use not long-time, because it is cumulative big that normal wear is satisfied piston ring gap, the pressurized air and the combustion gas that are in operation in a part of cylinder are leaked to crankcase by piston ring gap, reduce compression ratio, reduce horsepower, increase fuel consumption, shorten the contaminated rotten time of machine oil, simultaneously, dust and carbon deposit that this a part of combustion gas is being mingled with after the burning are scurried between the matching gap of piston and cylinder sleeve, form abrasive material, have increased cylinder sleeve, piston, the wear of piston-rings degree, machine oil fog is scurried in the cylinder by the opened gap of piston ring and is burnt in the breathing process, increased oil consumption, checked untimelyly to cause the axis tile accident easily, and the starting cold difficulty; When the piston ring gap value of reaching capacity, motor can not normally move, must change cylinder sleeve, piston, piston ring, this has just increased repairing amount, maintenance expenses and engineering time, has increased the workload of service worker, and after newly part is changed, because wearing and tearing permission amount is very little, wearing and tearing have little by little been arrived limiting value, can not use, and can only more renew part again.

In order to address these problems, generally adopted the use new material at present technically, increase cylinder sleeve, piston, the intensity of piston ring and the way of the various corrosion protection abrasion resistant agent of extensive use, its technical requirements and cost are higher, DeGrain.

It is a kind of rationally distributed, simple in structure, durable for a long time that the purpose of this utility model is to provide, shock resistance, wear-resistant, can compensate automatically after the piston ring scuffing, reduce the repairing amount, prolong the motor modernized hermetically sealed piston of combined type, the piston ring that requires of adaptation in working life at double.

The purpose of this utility model is achieved in that piston ring of the present utility model is that circular arc half tenon is driven in both sides inside and outside existing piston ring two of common material, make two and half joggled lap joints together, be exactly a toroidal, so just process a piston ring of the present utility model.It is characterized in that: piston ring is the piston ring of inside and outside both sides, piston ring two radian tenon overlap joint.Diesel engine piston of the present utility model is that processing realizes like this: under the situation that dimensional structure and oil ring groove and oil ring are constant inside and outside the existing diesel piston, the three road list compressions that change the existing diesel piston are the wide compressions of twice.That is to say: in the process of processing existing diesel piston, piston processes, but does not process three road list compressions, at this moment is processed into the wide compression of twice, has so just made a diesel engine piston of the present utility model.It is characterized in that having on the diesel engine piston the wide compression of twice.Piston of gasoline engine of the present utility model is that processing realizes like this: under the situation that dimensional structure and oil ring groove and oil ring are constant inside and outside the existing four-journey piston of gasoline engine, the single compression of twice that changes existing four-journey piston of gasoline engine is one wide compression, that is to say: in the process of the existing four-journey piston of gasoline engine of processing, piston processes, but do not process the single compression of twice, at this moment be processed into wide compression together, so just made a four-journey piston of gasoline engine of the present utility model, its feature has wide compression together on a four-journey piston of gasoline engine.The utility model is assembling like this: 4 same the utility model piston rings are divided into two groups, be contained in the wide compression of the twice on the utility model diesel engine piston, two piston rings of the present utility model in the wide compression of per pass are in juxtaposition, and opening 180 degree that stagger relatively, so just having made one can be for the utility model piston, the piston ring of diesel engine use.Its monnolithic case is a cylindrical shape, diesel engine piston of the present utility model, piston ring is contained in the cylinder sleeve of diesel engine of same model, after connecting rod connects, can move.Diesel engine piston of the present utility model, piston ring are the alternatives of existing diesel piston, piston ring, and being characterized in has the wide compression of twice on a diesel engine piston of the present utility model, adorn two identical piston rings in the wide compression in each road.

With two same piston rings of the present utility model, be contained in side by side in the wide compression together of a four-journey piston of gasoline engine of the present utility model, and opening stagger relatively 180 the degree, so just making a cover can be for piston of the present utility model, the piston ring of four-journey petrol engine use, its monnolithic case is a cylindrical shape, piston of gasoline engine of the present utility model, piston ring are contained in the cylinder sleeve in the petrol engine of same model with after connecting rod connects, can move.Piston of gasoline engine of the present utility model, piston ring are the alternatives of existing four-journey piston of gasoline engine, piston ring, it is characterized in that having on a piston of gasoline engine of the present utility model wide compression together, adorn two identical piston rings in wide compression.

The utility model adopts solid plane of metal and plane to overlap, and cambered surface and cambered surface overlap the principle that seals invisible flowing gas, dual structure, and thoroughly having solved existing cylinder sleeve, piston, piston ring is the problem of easily damaged parts.

Below in conjunction with accompanying drawing the advantage that the utility model compared with prior art has is described in detail:

After cylinder is filled air, piston and piston ring are in compression and exhaust process, (among Fig. 6 shown in 2) arrives second piston ring (position shown in 3 among Fig. 6 to the pressurized air that sweeps away from cylinder sleeve and piston matching gap (Fig. 6 shown in 1) along first compression ring outer openings gap, 180 degree when mounted relatively stagger gap-clearance of piston rings), blocked the outlet by second piston ring, this moment, some pressurized air was flushed to piston ring and gap, piston limit (among Fig. 6 shown in 4) from cylinder sleeve and piston matching gap (position shown in 1 among Fig. 6), the pressurized air of coming piston ring inboard and piston ring groove adapted space (position shown in 5 among Fig. 7) along the gap, limit is to the inboard opening (position shown in 6 and 8 among Fig. 7) of piston ring, sealed by both sides radian tenon faying surface (position shown in 7 among Fig. 7) inside and outside two piston ring two, come the piston ring inboard locates to locate with second piston ring and ring bank junction plane (position shown in 10 among Fig. 7) with the junction plane (position shown in 9 among Fig. 7) that the pressurized air of piston ring groove adapted space (position shown in 5 among Fig. 7) is come first ring and second ring along the gap, limit, the pressurized air and the waste gas that leak have been sealed by these two junction planes, in compression and exhaust process, there are not pressurized air and waste gas to creep into crankcase, thoroughly having overcome existing piston ring (shown in Figure 1) opened gap (11 and 12 distance among Fig. 1) that is in operation increases gradually, cause pressurized air from cylinder sleeve and piston matching gap (shown in Fig. 5 13) by gap-clearance of piston rings (among Fig. 5 shown in 31), scurry the space (position shown in 14 among Fig. 5) of cylinder sleeve and piston matching gap, the pressurized air that leaks like this continues to scurry into crankcase by second road and the 3rd road compression ring (among Fig. 5 shown in 15 and 32) and causes compression ratio decline, and the gas that leaks is brought residual dust in the combustion process and carbon deposit into cylinder sleeve and piston matching gap place, form abrasive material, at the reciprocal cylinder sleeve of having accelerated in service of high speed, piston, wear of piston-rings speed, having formed for these years, people one are used to think that this is the pernicious grinding effect of normal wear, piston ring of the present utility model adopts circular arc tenon overlap joint, dicyclo is arranged side by side, close with piston set assembling of the present utility model, thoroughly sealed in compression, scurry outlet in acting and the exhaust process to the gas of crankcase.With pressurized gas all be enclosed on the piston, among the cylinder sleeve, crankcase keeps clean easily, machine oil is difficult for contamination and deterioration, reduces cylinder sleeve, piston, wear of piston-rings speed, exhaust row's is thoroughly clean fast.

In acting and breathing process, piston moves to lower dead center from top dead center, be in position shown in 16 and 17 among Fig. 6 between the limit of piston ring and piston at this moment, the gas circuit that will enter air in the cylinder and machine oil fog from crankcase just in time with compression, exhaust process the gas circuit direction opposite, after being sealed by piston of the present utility model, piston ring, begin the next compression of repetition, acting, exhaust, air-breathing process.In acting and breathing process, structure of the present utility model makes motor break out power and strengthens, and power character strengthens, and strengthens horsepower, the saving fuel oil, and in the low temperature environment, cool car easily starts, and degree of vacuum is big in the suction stroke, and cylinder can be strong fast is filled fresh air,

Cause the wearing and tearing of piston, piston ring, cylinder sleeve when the operation under long-term event of overload of piston of the present utility model, piston ring, the overlap joint section of the utility model piston ring (19 to 20 distance among Fig. 7) (Fig. 7 mid point 19 overlaps with point 20 positions are approaching) in the overlap joint scope is air tight, its outstanding advantage just shows as piston ring because self elasticity and structure compensating piston, cylinder sleeve, wear of piston-rings amount automatically keep its original service behaviour.

When piston ring scuffing of the present utility model disconnects back (Fig. 7 mid point 20 with after point 19 overlaps and stagger) to faying surface, the working state of the preceding new ring of its working state and transformation not is identical, and twin nuclei is burn oil not, can keep good sealing property.Horsepower does not descend, and makes motor durable for a long time, shock resistance, wear-resistant, prolong motor working life at double, reduce frequency of maintenance, reduce the amount of maintenance of service worker, can adapt to long-time, overburdening and the work down of rugged environment state, power is exported lasting stability

Durable for a long time, shock resistance, wear-resistant that advantage of the present utility model shows as, wearing and tearing back piston ring can compensate automatically, reduces frequency of maintenance, prolong motor working life at double, eliminate smoke, save fuel oil and machine oil, cool car easily starts in the low temperature environment, soups, and strengthens power character, can adapt to the work under long-time, overburdening and the rugged environment state, power output lasting stability is saved maintenance expenses and engineering time, reduces amount of maintenance, continuous operation, the task of finishing the work satisfactorily.

The utility model is with low cost, remarkable benefit

Below explanation is furnished with accompanying drawing.

Fig. 1 is existing piston ring side perspective structural representation.

Fig. 2 is the utility model piston ring side perspective structural representation.

Fig. 3 is that schematic representation is looked squarely on the top of existing piston.

Fig. 4 is the utility model diesel engine piston three-dimensional structure diagram.

Fig. 5 is contained in after the top of existing piston and existing piston ring (compression ring) assembling to look squarely schematic representation in the cylinder sleeve.

Fig. 6 is the utility model diesel oil piston and 4 the utility model piston ring combination back three-dimensional structure diagrams.

Fig. 7 stands in the utility model diesel engine piston central position to look squarely the inside part structural representation.

Fig. 8 is the utility model four-journey piston of gasoline engine and two the utility model piston ring assembling back three-dimensional structure diagrams.

With reference to Fig. 1, Fig. 3, Fig. 5,3 existing pistons (compression ring) shown in Figure 1 are contained on existing piston Fig. 3, be exactly existing piston and existing piston ring (compression ring) assembled construction Fig. 5, its major defect is: the distance between two end faces 11 of gap-clearance of piston rings and 12 is exactly a piston ring gap 15,31 and 32, be in operation, piston ring gap 15,31 and 32 increase gradually, the approach that has the piston gas blowby now that is in operation is to scurry to piston ring gap 31 from the matching gap 13 of cylinder sleeve and piston, continue to scurry to cylinder sleeve and piston matching gap 14, enter piston ring gap 15 and 31 and scurry into crankcase.

With reference to Fig. 2, Fig. 4, Fig. 6, Fig. 7, Fig. 8, piston ring gap 2,6,8 of the present utility model, increase to a little 19 air tight when overlapping with the overlap joint section 7 of point 20.Pressurized air in the cylinder sleeve is scurried to piston ring gap 2 from cylinder sleeve and piston matching gap 1 position, arrives two plane faying surfaces 3 of ring side by side, is blocked the outlet by second ring.Some pressurized air is from cylinder sleeve and piston matching gap 1, be flushed to 4 places, gap, limit that piston ring cooperates with piston, come the inboard pressurized air of piston ring and rush at the inboard opened gap of piston ring 6 places, by radian tenon faying surface 7 envelope positions with piston ring groove adapted space 5 positions.Come junction plane 9 and second ring of first ring and second ring and encircle bank junction plane 10 places with piston ring groove adapted space 5 along the piston ring inboard, seal for combined 9 and 10.Overcome thoroughly that existing piston ring is in operation that opened gap 13 increases gradually and the defective that causes horsepower to descend.The gap, limit 16,17 of piston ring and piston in acting and breathing process, shows 16 and 17 position.Piston ring corner angle 21,22,23,24,25,26,29 and 30 are the right angle of 90 degree.Tenon arc length 27 equates with the distance of corner angle 25 to corner angle 26.Thickness 28 corner angle 25 such as grade of mortise are added 0.1 millimeter to half of the distance of corner angle 26.

The purpose of this utility model is such processing and implementation: piston ring of the present utility model is with after the length shown in 27 among the original girth increase of the existing piston ring of common material Fig. 2, circular arc half tenon (shown in Figure 2) is driven in inside and outside both sides, two, so just process a piston ring of the present utility model, circular arc half tenon of the utility model piston ring should equate with existing piston ring thickness (25 to 26 distance among Fig. 1) adding tenon arc length in man-hour half (27 arc length among Fig. 2).The thickness that the utility model piston ring half tenon car goes (28 length among Fig. 2) equal existing piston ring thickness (25 to 26 distance among Fig. 1) half add 0.1 millimeter, and equal the thickness (22 to 24 distance among Fig. 2) that the utility model piston ring outside half tenon keeps.Inboard half tenon of the utility model piston ring keep that thickness (21 to 23 distance among Fig. 2) equals existing piston ring thickness (25 to 26 distance among Fig. 1) half deduct 0.1 millimeter again, and equal the thickness (29 to 30 distance among Fig. 2) that the inboard half tenon car of the utility model piston ring goes.The utility model piston ring is to change a social system to form on the basis of existing piston ring, the utility model piston ring tenon overlapped, and be exactly an annulus.The utility model piston ring tenon is overlapped and keep under the situation of opened gap, its inner and outer diameter and existing piston ring keep under the opened gap situation, the inner and outer diameter data consistent, the altitude information unanimity, the thickness data unanimity has so just guaranteed the versatility of the existing piston ring of piston ring of the present utility model and same model.

Diesel engine piston of the present utility model is that processing realizes like this: under the situation that dimensional structure and oil ring groove and oil ring are constant inside and outside the existing diesel piston, the three road list compressions (shown in Figure 3) that change the existing diesel piston are the wide compression of twice (shown in Figure 4).That is to say: in the process of processing existing diesel piston, piston processes, but does not process three road list compressions, at this moment is processed into the wide compression of twice, has so just made a diesel engine piston of the present utility model; The wide compression degree of depth of the utility model diesel engine piston equals the compression degree of depth of existing diesel piston, the width of the wide compression of the utility model diesel engine piston is to put down twice the utility model piston ring simultaneously side by side, and keeps the gap, limit of annular groove and ring.Piston of gasoline engine of the present utility model is that processing realizes like this: under the situation that dimensional structure and oil ring groove and oil ring are constant inside and outside the existing four-journey piston of gasoline engine, the single compression of twice that changes existing piston of gasoline engine is one wide compression, that is to say: in the process of the existing piston of gasoline engine of processing, piston processes, but do not process the single compression of twice, at this moment be processed into wide compression together, so just made a piston of gasoline engine of the present utility model.The wide compression degree of depth of the utility model piston of gasoline engine equals the compression degree of depth of existing piston of gasoline engine.The width of the wide compression of the utility model piston of gasoline engine is for putting down twice the utility model piston ring side by side and keep annular groove and the gap, limit of ring simultaneously.

The utility model is assembling like this: 4 same the utility model piston rings (4 rings shown in Figure 2) are divided into two groups, be contained in the wide compression of twice interior (structure shown in Figure 6) of the utility model diesel engine piston, two piston rings of the present utility model in the wide compression of per pass are in juxtaposition, and opening 180 degree that stagger relatively, so just having made one can be for the utility model piston, the piston ring of diesel engine use.Its monnolithic case is a cylindrical shape (structure shown in Figure 6).Diesel engine piston of the present utility model, piston ring are contained in the cylinder sleeve in the diesel engine of same model, after connecting rod connects, can move.Diesel engine piston of the present utility model, piston ring are the alternatives of existing diesel piston and piston ring.Two same piston rings of the present utility model (2 rings shown in Figure 2) are contained in side by side in the wide compression together of a piston of gasoline engine of the present utility model, two gap-clearances of piston rings of the present utility model, 180 degree that stagger relatively, but the utility model piston, the piston ring (shown in Figure 8) of a cover gasoline feed machine use so just made.Its bulk shape is a cylindrical shape.Piston of gasoline engine of the present utility model, piston ring are contained in the cylinder sleeve in the petrol engine of same model, after connecting rod connects, can move.Piston of gasoline engine of the present utility model, piston ring are the alternatives of existing piston of gasoline engine, piston ring.

The utility model is paid special attention to has (A, B, C, D) 4 points:

A, in same wide annular groove two ring openings 180 degree that stagger relatively

B, do not adopt four-journey petrol engine compression ratio of the present utility model little, running at a high speed, inner pressure of air cylinder is less relatively, the permission range of opening wide compression is little, so when adopting the utility model technology, can on piston of gasoline engine, change the single compression of twice into wide compression (shown in Figure 8) together, assemble two piston rings of the present utility model and get final product.

Among C, Fig. 2 among 27 arc length and Fig. 1 25 to 26 distance equate

Half that 28 length equals among Fig. 1 25 to 26 distance among Fig. 2 added 0.1 millimeter and equal among Fig. 2 22 to 24 distance.

Half that 21 to 23 distance equals among Fig. 1 25 to 26 distance among Fig. 2 deducts 0.1 millimeter again, and equals among Fig. 2 29 to 30 distance

D, the wide compression in first road of the present utility model are loaded onto the piston ring of the present utility model that two outer surfaces are handled through chromium plating with only changing on the piston of gasoline engine in the groove that wide compression is arranged, so just more high temperature resistant wear-resistant.

Claims (4)

1, a kind of hermetically sealed piston of combined type, piston ring that uses in the four-stroke internal combustion engine compression system that be contained in is made up of piston and piston ring, it is characterized in that: piston ring is the piston ring of inside and outside both sides, piston ring two radian tenon overlap joint.

2, piston according to claim 1 is characterized in that: have only wide compression together on a piston of gasoline engine.

3, piston according to claim 1 is characterized in that: the wide compression of twice is arranged on a diesel engine piston.

4, the hermetically sealed piston of combined type according to claim 1, piston ring is characterized in that: adorning the identical piston ring of twice in the wide air drain together.

Images