WO2016140729A1 - Jonction expansible pour moteurs à taux de compression variable - Google Patents

Jonction expansible pour moteurs à taux de compression variable Download PDF

Info

Publication number
WO2016140729A1
WO2016140729A1 PCT/US2016/000017 US2016000017W WO2016140729A1 WO 2016140729 A1 WO2016140729 A1 WO 2016140729A1 US 2016000017 W US2016000017 W US 2016000017W WO 2016140729 A1 WO2016140729 A1 WO 2016140729A1
Authority
WO
WIPO (PCT)
Prior art keywords
eccentric
journal
hinged joint
primary
bushing
Prior art date
Application number
PCT/US2016/000017
Other languages
English (en)
Inventor
Edward Charles Mendler
Original Assignee
Edward Charles Mendler
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Edward Charles Mendler filed Critical Edward Charles Mendler
Priority to US15/731,724 priority Critical patent/US10253701B2/en
Publication of WO2016140729A1 publication Critical patent/WO2016140729A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D15/00—Varying compression ratio
    • F02D15/04—Varying compression ratio by alteration of volume of compression space without changing piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/041—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of cylinder or cylinderhead positioning

Definitions

  • Provisional Application No. 62/176,649 having a filing date of February 24, 2015
  • Provisional Application No. 62/230,277 having a filing date of June 1, 2015
  • Provisional Application Docket No. VC3-00C having a filing date of February 1, 2016 and a US Express Mail No. EK 886663519 US with a Provisional Application No. not yet assigned.
  • Eichi Kamiyama shows in US Patent 7,806,092 a variable compression ratio engine having an eccentric hinge pin assembly 25c, 25c 1, 25c2, 25c3 and 25c4 retained in crankcase bearing caps 25a, 25a2 and jug bearing caps or bearing blocks 25b.
  • Crankcase bearing caps 25a2 are bolted to crankcase 21, and jug bearing caps or bearing blocks 25b are bolted to jug 23.
  • a problem with the invention taught in US Patent 7,806,092 is that it is expensive to manufacture and expensive to assemble due to the large number of bearing caps that need to be bolted to the jug and crankcase.
  • a second problem is low mechanical stiffness and strength.
  • an expandable joint is made without removable bearing caps by preassembling eccentric bushings onto the hinge pin.
  • the expandable joint has a hinge type construction, but with the journals for each side of the hinge being spaced apart so that the distance between the two sides of the hinge changes with rotation of the hinge pin.
  • the expandable joint of the present invention is assembled by sliding the hinge pin into the hinged joint with the eccentric bushings attached. Once the hinge pin is in place, the eccentric bushings are locked in place with fasteners so that they do not rotate. After the eccentric bushings are locked in place, the hinge pin can be turned to expand the joint.
  • the expandable joint is intended for use in variable compression ratio engines, where expansion of the joint changes the compression ratio of the engine.
  • a major benefit of the present invention is that it is robust and can support the large forces encountered in internal combustion engines.
  • Another benefit of the present invention is that removable bearing caps are not required, resulting in a lower cost and a smaller size than expandable joints used in prior art variable compression ratio engines:
  • Fig. 1 is intended to schematically illustrate an expandable joint according to the present invention.
  • Fig. 2 shows an eccentric bushing having upper and lower halves according to the present invention.
  • Fig. 3 shows an eccentric bushing having a contiguous metal structure according to the present invention.
  • Fig. 4 shows a primary journal eccentric according to the present invention.
  • Fig. 5 is similar to Fig. 1, but shows one hinge pin not slid into the eccentric hinged joint.
  • Fig. 6 is an exploded view of the present invention showing the eccentric hinged joint of the present invention unassembled.
  • Fig. 7 is intended to illustrate a partially assembled hinge pin.
  • Fig. 8 is intended to illustrate an assembled hinge pin.
  • Fig. 9 is intended to illustrate a variable compression ratio engine having assembled hinge pins.
  • Fig. 10 is a detailed view of a compression fastener. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Figs. 1 through 6 are intended to schematically illustrate a portion of a variable compression ratio engine 1 having an expandable joint or eccentric hinged joint 2 according to the present invention.
  • Fig. I provides a cutaway view of the variable compression ratio engine having the eccentric hinged joint according to the present invention.
  • Fig. 5 is similar to Fig. 1 but one hinge pin has not yet been slid into the engine.
  • Fig. 6 is an exploded view of the present invention that shows the hinged joint unassembled.
  • Eccentric hinged joint 2 has a primary or first bearing housing 4 having a plurality of primary journal bearings 6, and a second bearing housing 8 having a plurality of secondary journal sockets 10.
  • Eccentric hinged joint 2 has a hinge pin 12 having a plurality of primary journals 14 and a plurality of secondary journals 16.
  • the primary journals 14 define a first journal axis 18 and the secondary journals 16 define a second journal axis 20, second journal axis 20 being offset from said first journal axis 18.
  • eccentric hinged joint 2 further includes one or more eccentric bushings 22.
  • the eccentric bushings 22 are located in secondary journal sockets 10 after assembly of the eccentric hinged joint 2.
  • the primary journals 14 are rotatably mounted in the primary journal bearings 6, and the secondary journals 16 are rotatably mounted in the eccentric bushings 22 for providing eccentric motion of the eccentric hinged joint 2.
  • the eccentric hinged joint 2 further includes eccentric bushing retaining means 24 for preventing movement of the eccentric bushings 22 in the secondary journal sockets 10 after assembly of the eccentric hinged joint 2.
  • the bushing retaining means 24 secure or fixes the offset location of the eccentric bushing 22 in the secondary journal sockets 10, and in more detail bushing retaining means 24 fixes the location of bushing minor axis 42 in second bearing housing 8.
  • the eccentric bushing retaining means 24 may optionally be a threaded fastener 26, a compression fastener 26b, a pin, a key, adhesive, solder, braze, weld, an interference fit, a combination of the above or other functional means.
  • Retaining means 24 may be located above secondary journal socket 10 as shown, or optionally below or to the side of secondary journal socket 10.
  • Figs. 1 and 5 show a portion of a variable compression ratio engine 1 having two eccentric hinged joints 2 of similar construction.
  • the two eccentric hinged joints 2 rotate in the same direction and in phase to adjust the compression ratio of variable compression ratio engine 1.
  • a single eccentric hinged joint 2 according to the present invention may be used in other types of variable compression ratio engines.
  • Figs. 1, 2 and 6 shows an eccentric bushing 22 having an upper bushing half 28 and a lower bushing half 30. A subset of eccentric bushings 22 are assembled eccentric bushings 22a. The bushing has separable halves to permit assembly on secondary journals 16 between two larger diameter primary journals 14.
  • eccentric bushing 22 has a bushing outer surface 36 that is seated in secondary journal sockets 10 located in secondary bearing housings 8.
  • Eccentric bushing 22 optionally has a threaded hole, a pin hole, a socket, flat, keyway or other functional means 34 for receiving bushing retaining means 24.
  • Bushing outer surface 36 defines a bushing major axis 38.
  • Eccentric bushing 22 further has a bushing inner bearing surface 40 that bears on secondary journals 1 located on hinge pin 12.
  • Bushing inner surface 40 defines a bushing minor axis 42, bushing minor axis 42 being offset from bushing major axis 38.
  • the diameter of bushing outer surface 36 is approximately the same as the diameter of primary journals 14. Additionally, in the embodiment of the present invention shown in Figs. 1 through 6, the distance between bushing major axis 38 and bushing minor axis 42 is equal to or approximately equal to the distance between first journal axis 18 and second journal axis 20, thereby enabling the outer surface of primary journals 14 to be generally aligned with bushing outer surface 36, and thereby enable hinge pins 12, with eccentric bushings 22 attached, to axially slide into primary journal bearings 6 and secondary journal sockets 10, and thereby provide for assembly of eccentric hinge joint 2, and in more detail without need for removable bearing caps.
  • eccentric hinged joint 2 has at least one eccentric bushing 22 assembled onto hinge pin 12 between two primary journals 14.
  • Eccentric hinge joint 2 further has a first axial assembly clearance for slidably assembling an eccentric bushing 22 on hinge pin 12 through at least one primary journal bearing 6.
  • Eccentric hinge joint 2 further has a second axial assembly clearance for slidably assembling a primary journal 14 on hinge pin 12 through at least one secondary journal socket 10.
  • eccentric hinge joint 2 has a first axial assembly clearance for slidably assembling an eccentric bushing 22 on hinge pin 12 through at least one primary journal bearing 6
  • eccentric hinge joint 2 has a second axial assembly clearance for slidably assembling a primary journal 14 on hinge pin 12 through at least one secondary journal socket 10.
  • second bearing housing 8 and secondary journal socket 10 have an internal diameter and primary journal 14 has an outer primary journal diameter, where the internal diameter is larger than the outer primary journal diameter, thereby providing assembly clearance for the primary journal 14 to pass through the secondary bearing housing 8 and secondary journal socket 10 for assembly of the eccentric hinged joint 2.
  • Eccentric bushing 22 also has an outer bushing diameter and primary journal 14 has an outer primary journal diameter.
  • the outer bushing diameter is within 0.007 inches of the outer primary journal diameter thereby enabling hinge pin 12 to slide into hinged joint 2.
  • a significant benefit of the present invention is that removable bearing caps are not required for assembling the hinge pins in the engine.
  • eccentric hinged joint 2 preferably has at least one primary bearing housing 4 having a contiguous metal or material structure surrounding at least one primary journal bearing 6 thereby providing a rigid and compact eccentric hinged joint 2.
  • at least one secondary bearing housing 8 has a contiguous metal or material structure surrounding at least one secondary journal socket 10 thereby providing a rigid and compact eccentric hinged joint.
  • At least one primary bearing housing 4 has a contiguous metal or material structure surrounding at least one primary journal bearing 6, and at least one secondary bearing housing 8 has a contiguous metal or material structure surrounding at least one secondary journal socket 10 thereby providing a rigid and compact eccentric hinged joint.
  • hinge pin 12 may be a contiguous metal shaft including at least on primary journal 14 and at least one secondary journal 16.
  • Assembled eccentric bushings 22a are typically employed in embodiments of the present invention having a secondary journal 16 located between two primary journals 14, and in more detail when the secondary journal has a smaller diameter than the two outer primary journals.
  • eccentric bushings 22 are assembled eccentric bushings having separable halves 22a. Assembled eccentric bushings 22a have separable bushing halves for assembly of eccentric bushings 22, on secondary journals 16. Eccentric bushings 22a preferably include alignment means for alignment of separable eccentric bushing halves, including upper bushing half 28 and lower bushing half 30, in second journal sockets 10, and also to hold the bearing halves together during assembly.
  • the eccentric bushing 22a alignment means is preferably selected from the group consisting of bushing alignment pins 32; threaded fasteners; fractured surface alignment; adhesive; solder; brazing; welding or other functional means. Alignment pins 32 can be seen in Figs. 1 and 10.
  • hinge pins 12 are assembled hinge pins
  • a subset of primary journals 14 are primary journal eccentrics 14b.
  • a subset of eccentric bushings 22 are full-round or contiguous metal structure eccentric bushings 22b.
  • Assembled hinge pin 12b has a central shaft 44 and at least one primary journal eccentric 14b rigidly assembled onto central shaft 44.
  • Hinge pin 12b further includes retaining means 45 for rigidly retaining primary journal eccentric 14b on central shaft 44.
  • the retaining means 45 is selected from a group consisting of an interference fit; a key; a pin; a threaded fastener; adhesive; solder; braze; weld, or other functional means.
  • Figs. 7 and 8 are intended to illustrate primary retaining means 45, and in more detail where primary journal eccentrics 14b are press fit or shrink fit onto central shaft 44, or retained in place with an adhesive, solder, braze or weld.
  • Fig. 4 is intended to illustrate primary journal eccentric 14b.
  • Primary journal eccentric 14b has a full-round or contiguous metal structure.
  • Eccentric bushing 22b has a slip fit assembly onto central shaft 44.
  • Central shaft 44 has a secondary journal surface 16b for supporting eccentric bushings 22b.
  • Fig. 3 is intended to illustrate an eccentric bushing 22b having a contiguous metal structure.
  • Bushing inner bearing surface 40 bears on secondary journal surface 16b on central shaft 44.
  • Fig. 7 shows a partially assembled hinge pin 12b
  • Fig. 8 shows an assembled or largely assembled hinge pin 12b
  • Figs. 7 and 8 show eccentric bushing 22b having a slip fit assembly onto said central shaft 44 between two primary journals eccentrics 14b, primary journal eccentrics 14b being rigidly assembled onto central shaft 44.
  • Fig. 8 shows central shaft 44 and rigidly attached primary journal eccentrics 14b rotated relative to eccentric bushings 22b causing the outer diameters of the eccentric bushings 22b to fall out of alignment with the primary journal eccentrics 14b, as needed for adjusting the compression ratio of variable compression ratio engine 1.
  • Fig. 9 is intended to illustrate a variable compression ratio engine having assembled hinge pins 12b according to the present invention.
  • Variable compression ratio engine 1 has a crankshaft 46, a connecting rod 48 a piston 50, a cylinder 52, a camshaft drive chain 54, a crankcase 56, a cylinder jug 58 and a deck 60 for receiving a head gasket and cylinder head.
  • a subset of bushing retaining means 24 are compression fasteners 26b.
  • Compression fasteners 26b are threaded into secondary bearing housing 8, and include a compression pin tip 62 for bearing down in socket 34. Alignment of eccentric bushing 22 is provided by pin tip 62 registering in the mating hole of socket 34.
  • Compression fastener 26b bears down on upper bushing half 28, and upper bushing half 28 in turn bears down on lower bushing half 30, forcing lower bushing half 30 to be firmly seated in secondary journal socket 10.
  • eccentric bushings 22 are mounted in first bearing housing 4, and primary journal bearings 6 are mounted in second bearing housing 8, and secondary journals 16 are repositioned to align with eccentric bushings 22, and primary journals 14 are repositioned to align with journal bearings 6, and retaining means 24 is repositioned to align with eccentric bushings 22.
  • the present invention is intended for use in variable compression ratio engines, but may also be used for other purposes where an expandable joint is needed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

La présente invention concerne une jonction expansible qui est réalisée sans chapeaux de palier amovibles en préassemblant les douilles excentriques sur la broche de charnière. La jonction expansible présente une construction de type charnière, mais avec les tourillons de chaque côté de la charnière espacés les uns des autres de sorte que la distance entre les deux côtés de la charnière change avec la rotation de l'axe de charnière. La jonction expansible selon la présente invention est assemblée en faisant coulisser l'axe de charnière dans la jonction articulée avec les douilles excentriques montées. Une fois que l'axe de charnière est en place, les douilles excentriques sont bloquées en place avec des éléments de fixation afin qu'elles ne tournent pas. Après avoir bloqué les douilles excentriques en place, l'axe de charnière peut être tourné pour l'expansion de la jonction. La jonction expansible est destinée à être utilisé dans des moteurs à taux de compression variable, où l'expansion de la jonction modifie le rapport de compression du moteur.
PCT/US2016/000017 2015-02-24 2016-02-22 Jonction expansible pour moteurs à taux de compression variable WO2016140729A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/731,724 US10253701B2 (en) 2015-02-24 2016-02-22 Expandable joint for variable compression ratio engines

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
USNONE 2005-12-29
US201562176649P 2015-02-24 2015-02-24
US62/176,649 2015-02-24
US201562230277P 2015-06-01 2015-06-01
US62/230,277 2015-06-01
US201614000000A 2016-02-01 2016-02-01

Publications (1)

Publication Number Publication Date
WO2016140729A1 true WO2016140729A1 (fr) 2016-09-09

Family

ID=56849020

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2016/000017 WO2016140729A1 (fr) 2015-02-24 2016-02-22 Jonction expansible pour moteurs à taux de compression variable
PCT/US2016/000113 WO2017078765A1 (fr) 2015-02-24 2016-11-07 Prise de décision utilisant une technologie d'identificateur unique interactif

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US2016/000113 WO2017078765A1 (fr) 2015-02-24 2016-11-07 Prise de décision utilisant une technologie d'identificateur unique interactif

Country Status (1)

Country Link
WO (2) WO2016140729A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100163002A1 (en) * 2007-06-13 2010-07-01 Toyota Jidosha Kabushiki Kaisha Variable compression ratio internal combustion engine
US7806092B2 (en) * 2006-09-26 2010-10-05 Toyota Jidosha Kabushiki Kaisha Drive device mounted in vehicle body which includes variable compression ratio internal combustion engine
US20140283786A1 (en) * 2013-03-22 2014-09-25 Toyota Jidosha Kabushiki Kaisha Spark ignition type internal combustion engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140279802A1 (en) * 2013-03-15 2014-09-18 General Electric Company Methods and systems for propagating information in collaborative decision-making
WO2015017804A1 (fr) * 2013-08-01 2015-02-05 Nant Holdings Ip, Llc Système de gestion de point de contact

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7806092B2 (en) * 2006-09-26 2010-10-05 Toyota Jidosha Kabushiki Kaisha Drive device mounted in vehicle body which includes variable compression ratio internal combustion engine
US20100163002A1 (en) * 2007-06-13 2010-07-01 Toyota Jidosha Kabushiki Kaisha Variable compression ratio internal combustion engine
US20140283786A1 (en) * 2013-03-22 2014-09-25 Toyota Jidosha Kabushiki Kaisha Spark ignition type internal combustion engine

Also Published As

Publication number Publication date
WO2017078765A1 (fr) 2017-05-11

Similar Documents

Publication Publication Date Title
US9981352B2 (en) Maintenance tool and method for a split friction bearing assembly and rotary machine using the same
US20120207415A1 (en) Pullrod Connection to a Journal
US5894763A (en) Flywheel and crank apparatus
US20190186353A1 (en) Connecting rod for internal combustion engine with eccentrical element adjustment arrangement for adjusting an effective connecting rod length
JP6160779B2 (ja) 軸受構造
EP1602840B1 (fr) Vilebrequin en plusieurs parties
US10184395B2 (en) Multi-joint crank drive of an internal combustion engine, and corresponding internal combustion engine
US10253701B2 (en) Expandable joint for variable compression ratio engines
KR20160083937A (ko) 크랭크 샤프트와 크랭크 부재를 조립하는 방법 및 조립체
WO2016140729A1 (fr) Jonction expansible pour moteurs à taux de compression variable
CN104948567B (zh) 具有径向轮廓增大的配重的隧道式机轴
JP2015055324A (ja) 内燃機関のバランサ装置とこのバランサ装置の組付方法
JP2005105920A (ja) 内燃機関におけるクランクシャフトの軸受構造
US20140260961A1 (en) Piston Pinbore Busing With Anti-Rotation Feature
JP2012007603A (ja) 内燃機関の複リンク式ピストン−クランク機構、複リンク式ピストン−クランク機構の制御軸、または複リンク式ピストン−クランク機構の制御軸の製造方法
WO2010051843A1 (fr) Vilebrequin démontable à pièces multiples
AU2011262585A1 (en) Camshaft with detachable bearing journals
US20040035244A1 (en) Crankshaft assembly and method for manufacturing same
JP6233186B2 (ja) 複リンク式ピストンクランク機構におけるリンク連結構造およびリンク連結方法
JP6375769B2 (ja) 内燃機関の複リンク式ピストンクランク機構の軸受構造。
US11919064B1 (en) Apparatus for disassembling pressed together crankshafts
JP2013002557A (ja) コンロッドの組付方法
EP3608523A1 (fr) Élément excentrique et un moteur à combustion interne en v
US3131577A (en) Crank assembly
JP2005140337A (ja) 内燃機関用クランク軸のクランクアーム構造

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16759226

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16759226

Country of ref document: EP

Kind code of ref document: A1