WO2002070925A1 - Piston de moteur ou d'autres machines - Google Patents
Piston de moteur ou d'autres machines Download PDFInfo
- Publication number
- WO2002070925A1 WO2002070925A1 PCT/FR2002/000779 FR0200779W WO02070925A1 WO 2002070925 A1 WO2002070925 A1 WO 2002070925A1 FR 0200779 W FR0200779 W FR 0200779W WO 02070925 A1 WO02070925 A1 WO 02070925A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- engine
- plane
- axis
- rotation
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
Definitions
- the invention relates to an engine piston, more particularly an engine piston equipped with a device for controlling the movement of a machine piston such as an engine or compressor in which, at its top dead center, the piston is stopped in its movement and kept at its top dead center position for a period of time making it possible to perform at constant volume: - the ignition and combustion operations in the case of conventional engines,
- Conventional engine pistons are generally guided by a skirt which slides in the engine cylinder and the profile of which is studied in order to be able to deform as a function of the temperature differences which the piston must undergo during its operation.
- the piston according to the invention proposes to largely solve the problems due to the friction of the skirt of the piston on the engine cylinder and the loss of yield relating thereto.
- roller shoes arranged perpendicular to the axis of the piston on either side of the latter, and coming to roll d on the one hand, on bosses of the piston arranged in a rolling track for this purpose and on the other hand, on running tracks specially arranged in the engine block so that the lateral forces due to the obliquity of the connecting rod and generated by the force applied to the piston head are transmitted to the engine block through said roller shoes which have an extremely low coefficient of friction, and which require little or no lubrication, thereby considerably reducing the losses in engine performance due to friction.
- the rolling tracks formed on the bosses of the piston form angles therebetween thus making it possible to ensure the guiding of the piston both in the plane of rotation of the engine but also in the p an perpencf jcufalre to the aforementioned rotation plan.
- the seton piston (the invention does not have a skirt and the piston head on the face takes place the thrust of the az is the only cylindrical part which supports the segments oit other bodies of eta ⁇ ché ⁇ té.
- the length of the piston bosses on which the rolling tracks are arranged is dtmensr ⁇ n ⁇ êe to allow the displacement of the roller skates during the upward and downward stroke of the piston preferably so that the roller pads are always in contact with the tracks of bearing, as well as the position of the piston pin will be calculated to allow the best possible application of lateral thrust forces as well as the space necessary for the displacement of the piston head.
- roller skates can vary without changing the general principle of the invention.
- Figure 1 shows in isometric view a piston and its connecting rod.
- Figure 2 shows seen in cross section an engine equipped with a system which allows the piston to stop at top dead center and equipped with the piston according to the invention in top dead center position.
- Figure 3 shows the same engine in the bottom dead center position.
- FIG. 4 represents a piston according to the invention fitted to an engine with a conventional crankshaft.
- Figure 5 shows in elevation a piston according to the invention provided with lateral shims.
- Figure 6 shows a rear view of a piston having inclined tracks forming an angle between them to allow guidance on all planes.
- FIG. 1 shows in isometric view a piston 1 according to the invention, the cylindrical head 2 of which carries the sealing segments 4.
- the piston 1 without skirt also includes two bosses 5 and 5 ′ arranged on either side of the connecting rod 13 and which are pierced by two orifices 7 making it possible to connect by the axis 8 (said piston pin), the piston 1 and fa connecting rod 13.
- FIG. 2 shows a schematic cross-sectional view of an engine comprising a control device ⁇ ti piston movement allowing said piston to stop at top dead center and equipped with a piston according to llnvention, where we can see the piston 1 which comprises its cylindrical head 2 which slides in a cylindrical 12 with a functional clearance and which carries sealing segments * 4.
- the piston 1 (shown at its top dead center), sliding in the cylinder 12, is controlled by a pressure lever .
- the pfeton 1 is connected by its axis 8 to the free end of a pressure lever consisting of an arm 13 articulated on a common axis 15 to another arm 14 fixed oscillating, on a stationary axis 16.
- a control rod 17 On the axis common 15 to the two arms 13 and 14 is attached a control rod 17 connected to the crank pin 18 of a crankshaft 19 rotating on its axis 20.
- the control rod 17 exerts a force on the common axis 15 of the two arms 13 and 14 of the pressure lever, thus allowing the displacement of the piston 1 along the axis of the cylinder 12, and transmits back to the crankshaft 19 the forces exerted on the piston 1 during the engine time thus causing its rotation.
- the stationary axis 16 is positioned laterally to the axis of movement of the piston 1 and determines an angle A between the axis of movement of the piston and the alignment axis X'X of the two arms 13 and 14 when they are aligned.
- the crankshaft is positioned laterally to the axis of the cylinder and or of the pressure lever and its positioning determines an angle B between the control rod 17 and the alignment axis X'X of the two arms 13 and 14 when they are aligned.
- the piston without skirt also comprises two bosses 5 and 5 '(5' not visible in this drawing) arranged on either side of the connecting rod (free end of the lever pressure) 13 and which are pierced with two orifices 7 making it possible to connect by the axis 8 (said piston pin), the piston 1 and the connecting rod 13.
- raceways 9 parallel to the axis of the cylinder which receive the roller shoes 10 and 10A which also roll on raceways 11 and 11A positioned integral with the engine block, parallel and antagonistic to the bosses 5 and 5 ′ and ensure the guiding of the piston 1.
- the force F exerted on the piston head, due to the angle of inclination of the connecting rod 13 is broken down into a lateral force FL perpendicular to the axis of the cylinder (in the direction of the arrow) which is taken up by the roller shoes 10 and dissipated on the crankcase through the raceways 11.
- the piston 1 has reached its bottom dead center and the lateral forces of opposite directions FL2 are taken up by the roller shoes 10A and dissipated on the crankcase through the bearing tracks 11 A.
- FIG. 4 represents a piston according to the invention equipping an engine with a conventional crankshaft 19A where one can see the piston 1 which has its cylindrical head 2 which slides in (a cylindrical jacket 12 with a functional clearance and which carries segments d 'étancfoélê 4.
- the piston without skirt also comprises two bosses 5 and SA (only one being visible in this drawing) arranged on either side of the connecting rod 6 and which are pierced with two ⁇ rffi ⁇ s 7 and 7A making it possible to connect by the axis 8 (called the piston axis), the piston 1 and the ball 6 itself connected to the crankshaft 19A by its crankpin 18A.
- each of these bosses 5 and 5 '(5' not visible) are provided with raceways 9 and 9A (as well as 9 'and 9'A not visible) parallel to the axis known as the cylinder which receive the roller skates 10 and 10A (as well as 10 'and 10'A not visible) which also roll on rolling tracks 11 and 11A (as well as 11' and 11 'A not visible) positioned parallel and antagonistic to the bosses 5 and 5 'and guide the piston 1.
- FIG. 5 represents a piston according to the invention seen in elevation where one can see the two bosses 5 and 5 ′ (5 ′ not visible) on either side of the connecting rod as well as the rolling tracks 9 receiving the roller skates 10 while the lateral clearance of the piston is ensured by shims 12 arranged on the piston pin.
- FIG. 6 represents a rear view of the piston according to the invention where the rolling tracks 9 and 9A and 9 'and 9'A of the roller skates form angles C and C between them, thus making it possible to guide the piston over the X and Y axes is on the plane of rotation of the motor and on the plane perpendicular to the latter.
- the number of roller skates, the materials used to make them, steel or other polyamide cages, steel or ceramic rollers, the angles that the raceways and their roller skates can form between them can vary without changing. the principle of the invention which has just been described.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0102990A FR2821646B1 (fr) | 2001-03-05 | 2001-03-05 | Piston de moteur ou d'autres machines |
FR01/02990 | 2001-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002070925A1 true WO2002070925A1 (fr) | 2002-09-12 |
Family
ID=8860758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/000779 WO2002070925A1 (fr) | 2001-03-05 | 2002-03-05 | Piston de moteur ou d'autres machines |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2821646B1 (fr) |
WO (1) | WO2002070925A1 (fr) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3398653A (en) * | 1966-08-24 | 1968-08-27 | John D. Foster | Piston |
US4596179A (en) * | 1981-10-12 | 1986-06-24 | Bando Kiko Co., Ltd. | Reciprocating machine |
DE3904716A1 (de) * | 1989-02-16 | 1990-08-23 | Heinrich Schiller | Hubkolbenverdichter und/oder-verbrennungsmotor ohne kurbelwelle, deren kolben durch einen exzenter angetrieben wird |
US5244284A (en) * | 1991-11-22 | 1993-09-14 | Precision Instruments, Inc. | Antifriction roller means for plungers |
US5437220A (en) * | 1994-05-24 | 1995-08-01 | Cheng; Chi | Ball bearing piston |
US5615600A (en) * | 1995-08-17 | 1997-04-01 | Cheng; Chi | Roller bearing piston |
EP0892198A1 (fr) * | 1997-07-18 | 1999-01-20 | Werner Achermann | Guidage axial pour piston |
FR2769949A1 (fr) * | 1997-10-17 | 1999-04-23 | Guy Negre | Procede de controle du mouvement de piston de machine, dispositif de mise en oeuvre et equilibrage du dispositif |
-
2001
- 2001-03-05 FR FR0102990A patent/FR2821646B1/fr not_active Expired - Fee Related
-
2002
- 2002-03-05 WO PCT/FR2002/000779 patent/WO2002070925A1/fr not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3398653A (en) * | 1966-08-24 | 1968-08-27 | John D. Foster | Piston |
US4596179A (en) * | 1981-10-12 | 1986-06-24 | Bando Kiko Co., Ltd. | Reciprocating machine |
DE3904716A1 (de) * | 1989-02-16 | 1990-08-23 | Heinrich Schiller | Hubkolbenverdichter und/oder-verbrennungsmotor ohne kurbelwelle, deren kolben durch einen exzenter angetrieben wird |
US5244284A (en) * | 1991-11-22 | 1993-09-14 | Precision Instruments, Inc. | Antifriction roller means for plungers |
US5437220A (en) * | 1994-05-24 | 1995-08-01 | Cheng; Chi | Ball bearing piston |
US5615600A (en) * | 1995-08-17 | 1997-04-01 | Cheng; Chi | Roller bearing piston |
EP0892198A1 (fr) * | 1997-07-18 | 1999-01-20 | Werner Achermann | Guidage axial pour piston |
FR2769949A1 (fr) * | 1997-10-17 | 1999-04-23 | Guy Negre | Procede de controle du mouvement de piston de machine, dispositif de mise en oeuvre et equilibrage du dispositif |
Also Published As
Publication number | Publication date |
---|---|
FR2821646A1 (fr) | 2002-09-06 |
FR2821646B1 (fr) | 2003-07-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10167776B2 (en) | Variable compression connecting rod | |
WO2015200432A1 (fr) | Bielle à compression variable | |
US8210137B2 (en) | Link type variable stroke engine | |
JP4092495B2 (ja) | 内燃機関の複リンク式ピストン−クランク機構 | |
EP1023531B1 (fr) | Procede de controle du mouvement de piston de machine, dispositif de mise en oeuvre et equilibrage du dispositif | |
US5791302A (en) | Engine with variable compression ratio | |
EP2021584B1 (fr) | Moteur à combustion interne | |
FR2906332A1 (fr) | Dispositif de transformation d'un mouvement lineaire en un mouvement de rotation de facon reglable | |
FR2657051A1 (fr) | Dispositif d'actionnement d'embrayage. | |
WO2002070925A1 (fr) | Piston de moteur ou d'autres machines | |
US6988470B2 (en) | Swash plate combustion engine and method | |
FR2514828A1 (fr) | Pompe d'injection de carburant, notamment pour moteur a combustion interne du genre moteur diesel | |
WO1981003200A1 (fr) | Amplificateur de puissance pour moteurs thermiques ou autres | |
JP4075600B2 (ja) | ピン連結構造 | |
US5570664A (en) | Engine valve drive device | |
JP4405361B2 (ja) | レシプロ機構 | |
US6293761B1 (en) | Variable displacement swash plate type compressor having pivot pin | |
JP2913722B2 (ja) | 内燃機関の可変圧縮比装置 | |
FR2905729A1 (fr) | Moteur a combustion interne pour vehicule automobile | |
BE526946A (fr) | ||
FR2844014A1 (fr) | Compresseur frigorifique a cylindree variable depourvu d'embrayage | |
US8522732B2 (en) | Flywheel for barrel engine | |
GB2288864A (en) | Engine with variable compression ratio | |
WO2002070876A1 (fr) | Chambre d'expansion de moteur a air comprime | |
JPH05306603A (ja) | 4サイクルエンジン用動弁機構の潤滑装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 028075137 Country of ref document: CN |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |