DE102020105153A1 - Connecting rod of an internal combustion engine for changing a compression ratio - Google Patents
Connecting rod of an internal combustion engine for changing a compression ratio Download PDFInfo
- Publication number
- DE102020105153A1 DE102020105153A1 DE102020105153.0A DE102020105153A DE102020105153A1 DE 102020105153 A1 DE102020105153 A1 DE 102020105153A1 DE 102020105153 A DE102020105153 A DE 102020105153A DE 102020105153 A1 DE102020105153 A1 DE 102020105153A1
- Authority
- DE
- Germany
- Prior art keywords
- connecting rod
- fluid
- cover
- head
- compression ratio
- 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.)
- Withdrawn
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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
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- 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
Abstract
Die Erfindung betrifft ein Pleuel zum Ändern eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine.Das erfindungsgemäße Pleuel (1) mit einer Vorrichtung zum Ändern eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine umfasst einen Pleuelkopf (2) mit einem Pleuelauge (3) und einen Pleuelbolzen (4). Der Pleuelbolzen (4) ist durch einen Exzenter (5) des Pleuels (1) mit veränderlichem Abstand zum Pleuelkopf (2) gelagert ist. Dabei umfasst der Pleuelkopf (2) eine Fluidkammer (6,7,8,9) und eine Abdeckung (10). Die Abdeckung (10) ist ausgebildet, das Pleuelauge (3) des Pleuelkopfs (2) zu verschließen und die Fluidkammer (6,7,8,9) mit einem Fluidkreislauf (11) zu verbinden.The connecting rod (1) according to the invention with a device for changing a compression ratio of an internal combustion engine comprises a connecting rod head (2) with a connecting rod eye (3) and a connecting rod bolt (4). The connecting rod bolt (4) is supported by an eccentric (5) of the connecting rod (1) at a variable distance from the connecting rod head (2). The connecting rod head (2) comprises a fluid chamber (6,7,8,9) and a cover (10). The cover (10) is designed to close the connecting rod eye (3) of the connecting rod head (2) and to connect the fluid chamber (6, 7, 8, 9) to a fluid circuit (11).
Description
Die Erfindung betrifft ein Pleuel zum Ändern eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine.The invention relates to a connecting rod for changing a compression ratio of an internal combustion engine.
Aus der
Das erfindungsgemäße Pleuel mit einer Vorrichtung zum Ändern eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine umfasst einen Pleuelkopf mit einem Pleuelauge und einen Pleuelbolzen. Der Pleuelbolzen ist durch einen Exzenter des Pleuels mit veränderlichem Abstand zum Pleuelkopf gelagert. Dabei umfasst der Pleuelkopf eine Fluidkammer und eine Abdeckung. Die Abdeckung ist ausgebildet, das Pleuelauge des Pleuelkopfs zu verschließen und die Fluidkammer mit einem Fluidkreislauf zu verbinden.The connecting rod according to the invention with a device for changing a compression ratio of an internal combustion engine comprises a connecting rod head with a connecting rod eye and a connecting rod bolt. The connecting rod bolt is supported by an eccentric of the connecting rod with a variable distance from the connecting rod head. The connecting rod head comprises a fluid chamber and a cover. The cover is designed to close the connecting rod eye of the connecting rod head and to connect the fluid chamber to a fluid circuit.
Dadurch, dass die Abdeckung ausgebildet ist, die Fluidkammer mit dem Fluidkreislauf zu verbinden, ermöglicht die Erfindung eine erhöhte Struktursteifigkeit des Pleuels, da keine Verbindung zwischen der Fluidkammer und dem Fluidkreislauf in dem Pleuel selbst vorzusehen ist. Weiterhin wird ein Fertigungsaufwand reduziert, da keine nachträgliche Bearbeitung des Pleuels erforderlich ist.Because the cover is designed to connect the fluid chamber to the fluid circuit, the invention enables an increased structural rigidity of the connecting rod, since there is no connection between the fluid chamber and the fluid circuit in the connecting rod itself. Furthermore, a manufacturing effort is reduced since no subsequent machining of the connecting rod is necessary.
Zum Verschließen des Pleuelauges des Pleuelkopfes wird die Abdeckung bevorzugt mittels lösbarer Verschraubungen im Pleuel befestigt. Alternativ können auch andere Verbindungselemente zum Befestigen verwendet werden. Die Abdeckung verschließt das Pleuelauge bevorzugt so, dass der Exzenter und ein Lagerbereich des Exzenters gegenüber Verschmutzungen geschützt sind, der Exzenter axial in seiner Position gehalten wird und der Pleuelbolzen in seiner Funktion nicht beschränkt ist.To close the connecting rod eye of the connecting rod head, the cover is preferably fastened in the connecting rod by means of detachable screw connections. Alternatively, other connecting elements can also be used for fastening. The cover closes the connecting rod eye preferably in such a way that the eccentric and a bearing area of the eccentric are protected against contamination, the eccentric is held axially in its position and the connecting rod bolt is not restricted in its function.
Unter Verbindung der Fluidkammer mit dem Fluidkreislauf wird hier verstanden, dass die Abdeckung so ausgebildet ist, dass ein Fluid aus dem Ölkreislauf in die Fluidkammer durch die Abdeckung strömen kann oder aus der Fluidkammer durch die Abdeckung in den Ölkreislauf abfließen kann. Dadurch wird ermöglicht, dass ein Druck in der Fluidkammer eingestellt wird, um den Exzenter in eine gewünschte Position zu bewegen.The connection of the fluid chamber to the fluid circuit is understood here to mean that the cover is designed such that a fluid can flow from the oil circuit into the fluid chamber through the cover or can flow out of the fluid chamber through the cover into the oil circuit. This enables a pressure to be set in the fluid chamber in order to move the eccentric into a desired position.
Vorzugsweise weist die Abdeckung einen Fluidkanal auf. Dadurch, dass die Abdeckung einen Fluidkanal aufweist, ermöglicht die Erfindung, die Fluidkammer über den Fluidkanal mit dem Fluidkreislauf zu verbinden. Der Fluidkanal weist bevorzugt einen Einlass und einen Auslass auf. Dadurch kann Fluid aus dem Fluidkreislauf in den Fluidkanal und durch den Auslass aus dem Fluidkanal in die Fluidkammer gelangen. Analog kann das Fluid durch den Einlass, den Fluidkanal und den Auslass von der Fluidkammer in den Fluidkreislauf gelangen.The cover preferably has a fluid channel. Because the cover has a fluid channel, the invention enables the fluid chamber to be connected to the fluid circuit via the fluid channel. The fluid channel preferably has an inlet and an outlet. This allows fluid from the fluid circuit to get into the fluid channel and through the outlet from the fluid channel into the fluid chamber. Analogously, the fluid can get into the fluid circuit through the inlet, the fluid channel and the outlet from the fluid chamber.
Die abhängigen Ansprüche beschreiben weitere vorteilhafte Ausführungsformen der Erfindung.The dependent claims describe further advantageous embodiments of the invention.
Bevorzugte Ausführungsbeispiele werden anhand der folgenden Figuren näher erläutert. Dabei zeigt
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1 ein Ausführungsbeispiel eines Pleuels mit einer Vorrichtung zum Ändern eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine, -
2 ein Ausführungsbeispiel einer Abdeckung eines Pleuelkopfs, -
3 ein alternatives Ausführungsbeispiel einer Abdeckung eines Pleuelkopfs und -
4 einen aus dem Stand der Technik bekannten Pleuelkopf.
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1 1 shows an embodiment of a connecting rod with a device for changing a compression ratio of an internal combustion engine, -
2nd an embodiment of a cover of a connecting rod head, -
3rd an alternative embodiment of a cover of a connecting rod head and -
4th a connecting rod head known from the prior art.
Dabei umfasst der Pleuelkopf
Das Pleuel
Die vier Fluidkammern
Die zwei Abdeckungen
Die Abdeckungen
Die Abdeckungen
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- DE 102019103998 A1 [0002, 0019]DE 102019103998 A1 [0002, 0019]
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020105153.0A DE102020105153A1 (en) | 2020-02-27 | 2020-02-27 | Connecting rod of an internal combustion engine for changing a compression ratio |
DE102021000936.3A DE102021000936A1 (en) | 2020-02-27 | 2021-02-22 | Connecting rods of an internal combustion engine for changing a compression ratio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020105153.0A DE102020105153A1 (en) | 2020-02-27 | 2020-02-27 | Connecting rod of an internal combustion engine for changing a compression ratio |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102020105153A1 true DE102020105153A1 (en) | 2020-04-30 |
Family
ID=70416906
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102020105153.0A Withdrawn DE102020105153A1 (en) | 2020-02-27 | 2020-02-27 | Connecting rod of an internal combustion engine for changing a compression ratio |
DE102021000936.3A Pending DE102021000936A1 (en) | 2020-02-27 | 2021-02-22 | Connecting rods of an internal combustion engine for changing a compression ratio |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102021000936.3A Pending DE102021000936A1 (en) | 2020-02-27 | 2021-02-22 | Connecting rods of an internal combustion engine for changing a compression ratio |
Country Status (1)
Country | Link |
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DE (2) | DE102020105153A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202022001648U1 (en) | 2022-07-23 | 2022-08-25 | Xaver Dürr | Device for improving the efficiency of a crankshaft of an internal combustion engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019103998A1 (en) | 2018-06-27 | 2019-08-29 | FEV Europe GmbH | Connecting rod of an internal combustion engine to change the compression ratio |
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2020
- 2020-02-27 DE DE102020105153.0A patent/DE102020105153A1/en not_active Withdrawn
-
2021
- 2021-02-22 DE DE102021000936.3A patent/DE102021000936A1/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019103998A1 (en) | 2018-06-27 | 2019-08-29 | FEV Europe GmbH | Connecting rod of an internal combustion engine to change the compression ratio |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202022001648U1 (en) | 2022-07-23 | 2022-08-25 | Xaver Dürr | Device for improving the efficiency of a crankshaft of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE102021000936A1 (en) | 2021-05-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R084 | Declaration of willingness to licence | ||
R081 | Change of applicant/patentee |
Owner name: FEV GROUP GMBH, DE Free format text: FORMER OWNER: FEV GROUP GMBH, 52078 AACHEN, DE |
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R230 | Request for early publication | ||
R081 | Change of applicant/patentee |
Owner name: FEV GROUP GMBH, DE Free format text: FORMER OWNERS: FEV GROUP GMBH, 52078 AACHEN, DE; RHEINISCH-WESTFAELISCHE TECHNISCHE HOCHSCHULE (RWTH) AACHEN, 52062 AACHEN, DE |
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R118 | Application deemed withdrawn due to claim for domestic priority |