FR3101121B1 - Variable length connecting rod for a variable compression ratio combustion engine - Google Patents

Variable length connecting rod for a variable compression ratio combustion engine Download PDF

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Publication number
FR3101121B1
FR3101121B1 FR1910432A FR1910432A FR3101121B1 FR 3101121 B1 FR3101121 B1 FR 3101121B1 FR 1910432 A FR1910432 A FR 1910432A FR 1910432 A FR1910432 A FR 1910432A FR 3101121 B1 FR3101121 B1 FR 3101121B1
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FR
France
Prior art keywords
connecting rod
compression ratio
variable
combustion engine
length connecting
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
FR1910432A
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French (fr)
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FR3101121A1 (en
Inventor
Benoit Verbeke
Jerome Paillard
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.)
Renault SAS
Original Assignee
Renault SAS
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Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to FR1910432A priority Critical patent/FR3101121B1/en
Publication of FR3101121A1 publication Critical patent/FR3101121A1/en
Application granted granted Critical
Publication of FR3101121B1 publication Critical patent/FR3101121B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/20—Thermal properties
    • F16C2202/22—Coefficient of expansion
    • 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

Abstract

L’invention propose une bielle (10) pour un moteur à taux de compression variable qui comporte un pied de bielle (12), une tête de bielle (14), un corps de bielle (16), et pour laquelle la longueur (L) de la bielle (10) est variable de manière à faire varier le taux de compression, caractérisée en ce que le corps de la bielle (10) comporte deux parties (16A, 16B) mobiles l'une par rapport à l'autre dont la première (16A) est reliée au pied de bielle (12), dont la deuxième (16B) est reliée à la tête de bielle (14) et entre lesquelles est agencé un élément (20) dont la longueur varie en fonction de sa température pour provoquer la réduction de la longueur (L) de la bielle (10) lorsque sa température augmente. Figure pour l'abrégé : 2The invention proposes a connecting rod (10) for a variable compression ratio engine which comprises a connecting rod small end (12), a connecting rod big end (14), a connecting rod body (16), and for which the length (L ) of the connecting rod (10) is variable so as to vary the compression ratio, characterized in that the body of the connecting rod (10) comprises two parts (16A, 16B) movable relative to each other, of which the first (16A) is connected to the small end (12), the second (16B) of which is connected to the big end (14) and between which is arranged an element (20) whose length varies according to its temperature to cause the length (L) of the connecting rod (10) to decrease when its temperature increases. Figure for abstract: 2

FR1910432A 2019-09-23 2019-09-23 Variable length connecting rod for a variable compression ratio combustion engine Active FR3101121B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1910432A FR3101121B1 (en) 2019-09-23 2019-09-23 Variable length connecting rod for a variable compression ratio combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1910432 2019-09-23
FR1910432A FR3101121B1 (en) 2019-09-23 2019-09-23 Variable length connecting rod for a variable compression ratio combustion engine

Publications (2)

Publication Number Publication Date
FR3101121A1 FR3101121A1 (en) 2021-03-26
FR3101121B1 true FR3101121B1 (en) 2022-01-07

Family

ID=68654788

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1910432A Active FR3101121B1 (en) 2019-09-23 2019-09-23 Variable length connecting rod for a variable compression ratio combustion engine

Country Status (1)

Country Link
FR (1) FR3101121B1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012214659B4 (en) * 2012-08-17 2014-05-28 Ford Global Technologies, Llc Length-adjustable connecting rod and method of operating an internal combustion engine with such a connecting rod
AT517718B1 (en) * 2015-08-14 2017-04-15 Avl List Gmbh LENGTH-ADJUSTABLE CONNECTING ROD

Also Published As

Publication number Publication date
FR3101121A1 (en) 2021-03-26

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