Oil wiper piston device for internal-combustion engine |
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IPC classes for russian patent Oil wiper piston device for internal-combustion engine (RU 2535514):
 Ice oil-scraper ring / 2499901
Top oil-scraper ring 3 and bottom oil-scraper ring 6 are fitted in piston groove 7. Expansion ring 4 is arranged between said top and bottom rings and has radial grooves 5 to communicate cavity arranged between cylinder wall 1 and OD surface of ring 4 with bottom cavity of piston ring 7. Note here that total angle of inclination of said rings 3, 6 and 4 makes at least 10 degrees.
 Piston machine / 2497002
Piston machine comprises cylinder-and-piston set including piston with compression rings fitted in its grooves and two bushes fitted in piston sidewall recesses as structural assemblies to orient ring locks. Said bushes are arranged above second compression ring in symmetry about its lock center at spacing between edges of recesses not exceeding preset maximum tolerance. Every said structural assy features limited displacement and is composed of a roller to enter holder top (annular) part with oil clearance and to slide between bottom holder end ledges, bottom holder being composed of segmented groove milled-out in piston body. Taper angles of top and bottom grooves in compression ring locks differ.
 Sealing device of piston / 2493459
Device includes two pistons 1 concentrically located in groove 2, rings 3 and 6 and an extender in the form of a set of spiral springs 17. Piston ring 3 interacts with inclined planes 13 of wedge-like projections 4 with inclined planes 15 of cavities 7 of additional ring 6 in left semi-circle 18 of sealing device so that resultant forces F are directed clockwise, and in right semi-circle 21 resultant forces F are directed counter-clockwise. During engine operation resultant forces F balance each other and the sealing device of piston does not rotate in piston cavity 2. Radial constituents of force R press ends 23 of piston ring 3 to mirror of cylinder 26. This will improve seating of rings to mirror of cylinder 26 and enhance tightness of cylinder 24. A new feature is that inclinations of side flat surfaces 13 and 15 interacting between each other and made in left semi-circle 18 are directed clockwise, and inclinations of interacting side flat surfaces 13 and 15 made in right semi-circle 21 are directed counter-clockwise. One pair of joints I is made in the area of locks of rings so that radial constituents of force R pass through ends of rings 23 at an angle of 10 degrees to transverse axis 22.
 Ice sleeve assembly gas seal / 2486360
Sleeve assembly seal comprises main compression ring and extra rings fitted in piston ring grooves. Extra [-like rung has top and bottom annular flanges adjoining the piston groove ends and interconnected by lateral cylindrical plate pressed against compression ring cylindrical surface. Extra ring top flange has through slits while its butt has end horns. Besides, debending horns are made at extra ring flanges, all over its edges. Proposed device decreases gas leaks in crankcase, rules out ring pumping effects and reduces oil ageing.
 Piston assembly / 2469231
Piston assembly consists of oil ring 1 with radial flat multiangular expander 2 and inertia element 3. Inertia element 3 has groove 4 into which oil ring 1 with expander 2 is inserted. Inertia element 3 together with oil ring 1 and expander 2 is located on piston cavity 5 of piston 6. Surface of upper end 7 of piston cavity 5, which also represents a cone the vertex of which is directed to lower dead point. Surface of upper ring 8 of inertia element 3 contacts the surface of upper end 7 of piston cavity 5, which also represents a cone the vertex of which is directed to lower dead point. Inertia element 3 consists of two sections - two semi-rings 10 and 11, which are fixed in free form with ring 1 and expander 2. The new feature is that upper end 8 of inertia element 3 and upper end 7 of piston cavity 5 represent conic surfaces contacting between each other; at that, vertexes of conic surfaces are directed to lower dead point. This allows the movement of sections 10 and 11 of inertia element 3 in piston cavity 5 relative to oil ring 1 in radial direction under action of inertia force of inertia element 3 itself and friction force of oil ring 1, which automatically controls the pressure of ring 1 on cylinder mirror.
 Compression ring / 2465500
Compression ring contains a stepped lock in section; all planes of the section are parallel to diagonal of the ring cross section at the section place.
 Ice piston scraper / 2458239
Internal combustion engine comprises cylinder 1, piston 2, piston scraper made up of top and bottom scrapers 3, 5, respectively fitted in piston groove 7. Bottom scraper lower end outer part has sharp scraper collar 8 arranged at angle α to lower end while top scraper lower end has ledge 4 with radial grooves.
 Piston ring with auxiliary radial flexibility / 2451852
Piston ring 1 receives additional radial pressure from separate pre-compressed pairs of coil springs 6 mounted in matched pairs of parallel holes 7 formed in a piston 3 from its internal peripheral surface 8. End faces 9 of the coil springs 6 are supported by a closing ring 10, and opposite end faces 12 radially rest through movable washers 13 and ends 15 of U-wires 16 against the piston ring 1. A flexible part of a radial expander, namely coil springs 6 in the parallel holes 7 formed in the piston 3 from its internal peripheral surface 8 are placed so that to enable eliminating completely action of incandescent gas and high temperature of the piston 3 on flexible part of a radial expander.
 Ice piston scraper ring / 2447307
Piston groove 6 accommodates top scraper 3 and bottom scraper 5 with expansion flexible split ring 4 arranged there between and provided with grooves to communicate the cavity between cylinder wall 1 and outer diameter surface of ring 4 with bottom cavity of piston groove 5. Working surfaces of scrapers 3 and 5 are shaped to remove surplus oil from cylinder wall 1 solely in down motion of piston 2 while required thickness of hydrodynamic lube layer is formed on wall of cylinder 1.
 Ice piston seal / 2447306
Piston groove 8 accommodates top ring 3 and bottom ring 4. Note here that top edge of top ring 3 is located to acute angle to its bottom edge while ring larger horizontal side face the axis of cylinder 1. Oil scraper extra ring 5 is arranged under bottom ring 4. Extra ring bottom face is located to acute angle to top face. Larger vertical side of ring 5 faces the wall of cylinder 5 while clearance is arranged between top ring outer cylindrical surface and cylinder wall. Extra ring bottom face inclination is smaller than that of top ring top face. Groove is made under extra ring bottom face to communicate via grooves with piston inner space.
 Set of piston rings / 2244145
Invention can be used for sealing cylinder-piston group. Set of piston rings consists of upper ring and lower ring. Said rings have common axis, common outer ring surface and common inner ring surface, each provided with mating surface in place of relative contact. Said two mating surfaces conjugate on joint section in radial split of piston ring set. Joint has outer edge and inner edge in radial direction. Said two mating surfaces are relatively separated radially outwards relative to said outer edge and then form, with common outer ring surface, first wedge clearance with vertex angle equal to 10" - 1o30". Distance from said vertex to common outer ring surface exceeds distance from said vertex to common inner ring surface.
 Durable sliding member / 2245472
Outer surface of the sliding member is covered with a material composed of, in per cent of mass, 30-70% of powder-like molybdenum, 10-40% of powder-like chromium-nickel alloy, 3-40% of ceramic powder, and 2-15% of powder-like solid lubricant. The ceramic powder is made of chrome oxide or chrome carbide. The powder-like solid lubricant is made of at least one matter from the group composed of calcium fluoride, manganous sulfur and molybdenum disulfide.
 Cylindrical-piston group sealing device / 2252331
Invention relates to sealing devices of internal combustion engines. Proposed sealing device of cylinder-piston group contain ring seal installed in ring groove of piston and contacting with sealed inner surface of cylinder and one of inner planes of groove, and shielding element in contact with plane of seal. Sealing device contains ring stop of shielding element. Piston is made sectional, split in ring groove area. Shielding element is made nonsplit. Provision of shielding element with ring stop makes it possible to overlap passage of combustion products into space formed by seal, shielding element and ring stop. Moreover, provision of shielding element increases friction force in seal-piston pair in radial direction two times.
 Internal combustion engine piston compression ring / 2262611
Proposed piston compression ring consists of two parts: metal one in form of ring element, and cement one coupled with metal part and designed for contacting with surface of cylinder liner. Friction coefficient of ceramet part is lower than that of metal part. Ceramet part is made in form pf solid ring with cross section in form of latter T turned through 90° whose outer end face surface is designed for contact with cylinder liner surface of engine and whose upper and lower side surfaces are reinforced with metal part and are made in form of ring element consisting of two steel solid rings with low temperature expansion coefficient which are designed to provide required rigidly and strength of piston ring and tightness of its fit to side surfaces of piston ring grooves. Ceramet part of piston ring with porosity of 15-30% is made of pressed and baked mixed powder of bronze graphite with addition of tin and nickel powder and impregnated with motor oil in vacuum chamber.
 Piston sealing for internal combustion engine / 2282739
Lower compression ring and upper stepped resilient split ring are fitted in piston groove. Split ring is in contact by outer diameter with cylinder wall. Clearance is provided between step in recess made on upper flange of piston groove and ring step. Rings are arranged with locks spaced at 180° relative to each other. Resilient sealing rings are installed over surface of inner diameters of compression ring and stepped ring. Locks of sealing rings are spaced at 90° relative to locks of compression ring and stepped ring, respectively, and at 180° relative to each other.
 Piston ring for internal combustion engine / 2307256
Proposed piston ring fitted in piston groove and driven into cylinder liner contains main ring with rectangular section ring groove made on its working surface forming upper and lower beads with end face surfaces of main ring, and antifriction insert fitted in ring groove and fixed from fall in slots made on inner cylindrical surface of main ring at both sides from lock. Antifriction insert is fitted in ring groove to form space between inner surface of insert and bottom of groove. Slots are made in upper bead of main ring. End face clearance is formed between upper end face surface of main ring and wall of piston groove, and behind-the-ring space is formed between inner cylindrical surface of main ring and bottom of piston groove.
 Non-round piston ring with variable degree of irregularity of distribution of radial partial pressures (versions) / 2318127
Proposed piston ring is mom-round. Ring gap in free state is within 11% and 18% of cylinder bore in which piston ring is installed. Degree of irregularity of distribution of radial partial pressure δr is within -5.175333187 and +2.339517464. Irregularity of ring in gap area is from 1.3 to 1.9. Other design version of ring is described in invention also.
 Locking piston rings of internal combustion engines / 2319027
Invention relates to pistons provided with three piston groove in each of which one piston ring is fitted. Piston has two thin compression rings with oppositely spaced ring gaps fitted in upper groove of piston. Second cast-iron compression rings with upper channel in which thin steel locking ring with oppositely spaced is fitted in second groove. Third cast-iron ring fitted in lower groove is provided from two sides with thin steel locking rings with oppositely spaced gaps. Lower thin steel locking ring is oil control one. Piston is provided with groove to remove oil from walls of cylinder and direct it into piston inner space.
 Ice piston packing / 2341671
Piston groove houses a cushion split stepwise ring and compression ring with inner diameters accommodating O-rings. Note that the stepwise and compression rings total height h is calculated from the formula h=S1/πr2, where S1 is the area of the stepwise ring upper end faces, r2 is the radius of the O-ring inner vertical surfaces. The aforesaid formula is designed to be used for calculation of geometrical parameters of the compression rings of whatever types, models and sizes of ICEs, piston compressors, piston pumps, etc.
 Ice engine cylinder piston seal / 2354840
Invention relates to machine building, particularly to piston-type ICE. The proposed ICE cylinder piston seal comprises two resilient seal rings with inclined outer edges abutting on the cylinder wall, arranged unidirectional in one groove of the piston and representing one-piece rings with invariable thickness over their cross section. The rings outer inclined edges form, in the area they abut on the cylinder wall, an enclosed inner chamber constricted, on the piston side, by additional space ring furnished with two diametrically-opposite holes for oil to circulate inside the said inner chamber.
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FIELD: machine building. SUBSTANCE: in piston groove a top trapezoidal oil wiper ring, trapezoidal spacer and bottom trapezoidal oil wiper ring are installed, ay top ends face of the bottom trapezoidal oil wiper ring the radial slots are made to drain oil removed from the cylinder wall by top ring to the near-bottom cavity of the piston groove and further via the cone holes to the internal piston cavity. Work surfaces of the oil wiper rings are profiled such that surplus oil is removed from the cylinder wall during the piston movement to the bottom position only, and on the cylinder wall a minimum necessary thickness of the hydrodynamic lubricating layer is created ensuring minimum mechanical losses for friction of the piston rings and minimum engine oil consumption for burn-off losses. EFFECT: improved reliability of the oil wiper piston device. 2 cl, 1 dwg
The invention relates to the field of engineering, and specifically to the design, manufacture and operation of internal combustion engines. Known oil control device for internal combustion engines containing oil scraper rings and expanders different designs (Application No. 53-22204, Japan, 1978; Application No. 59-20859, Japan, 1984; GOST R 53843-2010; RU patent No. 2447307, IPC F02K F5/00, F16J 9/20, publ. 10.04.2012). Known oil scraper ring of the internal combustion engine (patent RU №2447307, IPC F02K F5/00, F16J 9/20, publ. 10.04.2012) containing the scraper elements made in the form of one-sided trapezoid, and located between the expansion ring, closest to the proposed and adopted for the prototype. However, in the known device the location of the radial grooves on the expansion ring restricts the minimum size, as in the working process of the engine on the expansion ring are high-frequency vibratory loads that cause the occurrence of fatigue stresses at the location of the grooves, leading to the destruction of the ring. Therefore, these designs are suitable to use in high-power engines with relatively large diameters of the cylinders. The technical result, which is aimed by the invention, consists in the universality of oil on newago device, efficiency, reliability, life gain, and lower consumption of engine oil, the improvement of the ecological characteristics of the engine. The technical result is achieved by the oil scraper piston device of the internal combustion engine, containing installed in one piston groove of the upper and lower trapezius scraper ring and located between the expansion ring, what's new is that on the top end of the lower scraper ring made of radial grooves. The angle of inclination of the lower end of the expansion ring and the upper end of the lower scraper ring more angle of 12° self-locking. The drawing shows a partial cross section of the internal combustion engine. The internal combustion engine includes a cylinder 1, a piston 2, piston groove 7, in which there are upper oil scraper ring 3, the expansion ring 4 and the lower oil scraper ring 5, on the upper end of which is made of radial grooves (6) to drain the oil, removed from the wall of the cylinder (1) and the upper ring (3) in the bottom cavity of the piston groove (7) and then through conical holes (8) in the inner cavity of the piston (2). Working surfaces of the oil ring (3) and (5) profiled so that the excess oil is removed from the wall of the cylinder (1) only when the piston (2) nor is it the position, and on the cylinder wall (1) is the minimum required thickness of the hydrodynamic lubricating film, providing minimal mechanical losses due to friction of the piston rings and the minimum consumption of motor oil on the frenzy. Oil scraper piston device operates as follows. When the piston 2 in the lower position of the lower oil scraper ring 5 removes from the wall of the cylinder 1 the main part of the oil, the upper oil scraper ring 3 finally generates the minimum required thickness of the oil film on the cylinder wall 1, removing excess remaining on the wall of the oil through the radial grooves 6 in the bottom cavity of the piston groove 7 and further through the tapered hole 8 into the internal cavity of the piston 2. Tapered drain holes 8 improve the removal of oil from the piston groove 7 and counteract sucking oil from the internal cavity of the piston 2 on the working stroke, the inlet when the piston 2 and in the gaps of the piston groove 7 is formed a vacuum. When warming up the engine in the first place heats up the piston 2, respectively, increases the width of the piston groove 7, under its own elastic force, the expansion ring 4 relaxes and shifts in the direction of the wall of the cylinder 1, the effect on the lower ring 5, compressing it to the bottom shelf of the piston groove 7. In turn, the friction force is the working surface of the lower ring 5 on the cylinder wall 1 and the hydrodynamic force of the oil, acting on the ring 5, contribute to the formation of a gap between the bottom shelf of the piston groove 7 and the bottom end of the lower ring 5. To avoid this gap, which opens the way for oil in the piston groove 7, the elastic force of the expansion ring should be greater than the opposing forces. In the process of heating cylinder 1 increases its diameter, wiper ring 5 relaxes, reduces the impact on the expansion ring 4, which is also rasimas, shifts in the direction of the wall of the cylinder 1, preventing the emergence of a gap between the bottom shelf of the piston groove 7 and the bottom end of the ring 5. Guaranteed rasklinivanie system "top ring 3 - expansion ring 4 - the lower ring 5" on all modes of engine operation is provided by the estimated size of the gap between the expansion ring 4 and the wall of the cylinder 1. This condition is satisfied, if the angle of inclination of the lower end of the expansion ring 4 and, respectively, the upper end of the lower scraper ring 5 will have more angle-locking 12°. When the piston 2 in the upper position of the profiled working surfaces of the oil ring 3 and 5 bump on the surface oils, leaving it unchanged. This ensures the minimum required oil layer on the cylinder wall 1, a stable job Malashenko what about the piston device in all modes of engine operation. During shutdown and cooling of the engine, first and foremost, cools the cylinder 1, is reduced in diameter, compressed, top 3 and bottom 5 scraper ring, which, by acting on the expansion ring 4, shift it in the direction of the axis of the cylinder 1, the whole system occupies its original position. For the implementation of this recovery process to a greater extent than in the beginning, you must have the angle of the ends of the expansion ring and the lower scraper ring more than 12°. The design of the oil scraper piston device provides the minimum required thickness of the lubricant film on the cylinder wall, substantially increases the life of engine oil with a minimum consumption, reducing harmful contaminants and impurities in the exhaust gases. 1. Oil scraper piston device of the internal combustion engine, containing installed in one piston groove of the upper and lower trapezius scraper ring and located between the expansion ring, characterized in that on the upper end of the lower scraper ring made of radial grooves. 2. Oil scraper piston device of the internal combustion engine under item 1, characterized in that the angle of inclination of the lower end of the expansion ring and the upper end of the lower scraper ring more angle of 12° self-locking.
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