FR3043739B1 - ROD FOR MOTOR WITH VARIABLE VOLUMETRIC RATIO - Google Patents

ROD FOR MOTOR WITH VARIABLE VOLUMETRIC RATIO Download PDF

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Publication number
FR3043739B1
FR3043739B1 FR1561046A FR1561046A FR3043739B1 FR 3043739 B1 FR3043739 B1 FR 3043739B1 FR 1561046 A FR1561046 A FR 1561046A FR 1561046 A FR1561046 A FR 1561046A FR 3043739 B1 FR3043739 B1 FR 3043739B1
Authority
FR
France
Prior art keywords
connecting rod
cylinder
volumetric ratio
rod
length
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
FR1561046A
Other languages
French (fr)
Other versions
FR3043739A1 (en
Inventor
Philippe DURY
Yves Miehe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MCE5 Development SA
Original Assignee
MCE5 Development SA
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 MCE5 Development SA filed Critical MCE5 Development SA
Priority to FR1561046A priority Critical patent/FR3043739B1/en
Priority to PCT/FR2016/052982 priority patent/WO2017085408A1/en
Publication of FR3043739A1 publication Critical patent/FR3043739A1/en
Application granted granted Critical
Publication of FR3043739B1 publication Critical patent/FR3043739B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/04—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads with elastic intermediate part of fluid cushion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/06—Adjustable connecting-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/22—Internal combustion engines

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

L'invention concerne une bielle de longueur variable 1 pour ajuster le rapport volumétrique d'un moteur, comprenant un cylindre 2 solidaire d'une première extrémité E1 de la bielle 1 ; un piston 3 mobile dans le cylindre 2, solidaire de la seconde extrémité E2 de la bielle, et définissant dans le cylindre une première chambre hydraulique 4 dite « haute pression » apte à transmettre les efforts de compression et une seconde chambre hydraulique 5 dite « basse pression » apte à transmettre les efforts de traction; au moins un conduit calibré 6 ; 6a, 6b permettant l'écoulement d'un fluide entre la chambre basse pression 5 et la chambre haute pression 4 ; des moyens de rappel 7 tendant à ramener la bielle à sa longueur nominale. La bielle 1 est remarquable en ce que les moyens de rappel 7 et le conduit calibré 6 sont choisis pour ajuster la longueur de la bielle 1 aux efforts moyens de traction et de compression qui s'y appliquent.The invention relates to a variable-length connecting rod 1 for adjusting the volumetric ratio of an engine, comprising a cylinder 2 integral with a first end E1 of the connecting rod 1; a piston 3 movable in the cylinder 2, integral with the second end E2 of the connecting rod, and defining in the cylinder a first hydraulic chamber 4 called "high pressure" capable of transmitting the compressive forces and a second hydraulic chamber 5 called "low pressure ”capable of transmitting tensile forces; at least one calibrated duct 6; 6a, 6b allowing the flow of a fluid between the low pressure chamber 5 and the high pressure chamber 4; return means 7 tending to return the connecting rod to its nominal length. The connecting rod 1 is remarkable in that the return means 7 and the calibrated duct 6 are chosen to adjust the length of the connecting rod 1 to the average tensile and compressive forces applied to it.

FR1561046A 2015-11-17 2015-11-17 ROD FOR MOTOR WITH VARIABLE VOLUMETRIC RATIO Active FR3043739B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1561046A FR3043739B1 (en) 2015-11-17 2015-11-17 ROD FOR MOTOR WITH VARIABLE VOLUMETRIC RATIO
PCT/FR2016/052982 WO2017085408A1 (en) 2015-11-17 2016-11-17 Rod for a variable compression ratio engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1561046A FR3043739B1 (en) 2015-11-17 2015-11-17 ROD FOR MOTOR WITH VARIABLE VOLUMETRIC RATIO
FR1561046 2015-11-17

Publications (2)

Publication Number Publication Date
FR3043739A1 FR3043739A1 (en) 2017-05-19
FR3043739B1 true FR3043739B1 (en) 2018-06-15

Family

ID=55411510

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1561046A Active FR3043739B1 (en) 2015-11-17 2015-11-17 ROD FOR MOTOR WITH VARIABLE VOLUMETRIC RATIO

Country Status (2)

Country Link
FR (1) FR3043739B1 (en)
WO (1) WO2017085408A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3079893B1 (en) * 2018-04-04 2020-04-17 Andre Roland Prieur VARIABLE LENGTH CONNECTING ROD FOR INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATE
US11149782B2 (en) * 2019-07-17 2021-10-19 Hyundai Motor Company Magnetically-actuated variable-length connecting rod devices and methods for controlling the same
FR3102814B1 (en) * 2019-11-04 2021-11-26 MCE 5 Development Variable length connecting rod for piloted compression ratio engine
FR3104220B1 (en) * 2019-12-05 2021-12-24 MCE 5 Development Telescopic control rod for variable compression ratio engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753563A1 (en) * 1977-12-01 1979-06-07 Daimler Benz Ag Variable stroke reciprocating piston IC engine - has resilient connecting rod formed by spring=loaded hydraulic arm
DE19530191A1 (en) * 1995-08-17 1997-02-20 Daimler Benz Ag connecting rod
WO2002010568A1 (en) * 2000-08-02 2002-02-07 Yadegar Jerry I Hydraulically adjustable connecting rod for internal combustion engine efficiency
US8746188B2 (en) * 2010-03-17 2014-06-10 Larry C. Wilkins Internal combustion engine with hydraulically-affected stroke
GB2494718A (en) * 2011-09-16 2013-03-20 Luciano Danilo Lissiak Segmented connecting rod with an energy storing element
DE102015001066B3 (en) * 2015-01-29 2015-10-22 Armin Brunner Hydraulically adjustable connecting rod

Also Published As

Publication number Publication date
WO2017085408A1 (en) 2017-05-26
FR3043739A1 (en) 2017-05-19

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