DE348555C - Adjustable piston pin bearings for internal combustion engines - Google Patents

Adjustable piston pin bearings for internal combustion engines

Info

Publication number
DE348555C
DE348555C DENDAT348555D DE348555DD DE348555C DE 348555 C DE348555 C DE 348555C DE NDAT348555 D DENDAT348555 D DE NDAT348555D DE 348555D D DE348555D D DE 348555DD DE 348555 C DE348555 C DE 348555C
Authority
DE
Germany
Prior art keywords
piston
piston pin
internal combustion
combustion engines
eccentric
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.)
Expired
Application number
DENDAT348555D
Other languages
German (de)
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.)
FRANZ STOCK FA
Original Assignee
FRANZ STOCK FA
Publication date
Application granted granted Critical
Publication of DE348555C publication Critical patent/DE348555C/en
Expired legal-status Critical Current

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
    • F02D15/02—Varying compression ratio by alteration or displacement of 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
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length

Description

Vorliegende Erfindung betrifft eine verstellbare Kolbenbolzenlagerung für Verbrennungskraftmaschinen. Es ist bekannt, Kolbenbolzen exzentrisch in einer Buchse zu lagern, die drehbar und feststellbar in die Kolbenwandung eingesetzt ist, so daß der Kolbenbolzen seine Lage zum Kolbenboden ändern kann, zwecks Vergrößerung oder Verkleinerung" des Kompressionsraumes. Das WesenThe present invention relates to an adjustable piston pin bearing for internal combustion engines. It is known to mount the piston pin eccentrically in a bushing, which can be rotated and locked in the piston wall is inserted so that the piston pin can change its position in relation to the piston crown, for the purpose of enlarging or reducing " of the compression room. The essence

ίο der Erfindung liegt darin, daß die Buchse, in welcher der Kolbenbolzen exzentrisch befestigt ist, in einer zweiten Buchse exzentrisch drehbar und feststellbar gelagert ist, welche ihrerseits wieder drehbar und verstellbar in die Kolbenwandung eingesetzt ist, so daß die Mittelachse des Kolbenbolzens bei Verstellung des Exzenters zur Kolbenwandung und der Exzenter zueinander immer mit der Längsmittelachse des Kolbens in eine Ebene fällt. Durch diese Art der Verstellung kann der Kolbenbolzen in jede beliebige Entfernung zum Kolbenboden innerhalb einer gewissen Strecke gebracht werden, während bei den bekannten Ausführungsformen die Strecke, um welche der Kolbenbolzen bewegt werden kann, eine bestimmte ist, welche festgelegt wird durch die Lage des Bolzens in der exzentrischen Buchse, so daß eine Verstellung um i8o° stattfinden kann, wenn die Mittelachse des Kolbenbolzens mit der Längsmittelachse des Kolbens in eine Ebene fallen soll. Dieses ist aber eine Hauptbedingung, um die einseitige Belastung des Kolbens und den damit bedingten einseitigen Verschleiß der Zylinderwandung zu vermeiden, wodurch ein Ovallauf des Zylinders stattfinden würde.ίο the invention is that the socket in which the piston pin is fastened eccentrically, in a second socket eccentrically is rotatably and lockably mounted, which in turn is rotatable and adjustable in the piston wall is inserted so that the central axis of the piston pin when adjusted of the eccentric to the piston wall and the eccentric to each other always with the The longitudinal center axis of the piston falls in a plane. This type of adjustment allows the piston pin at any distance from the piston crown within a certain Route are brought, while in the known embodiments the route, around which the piston pin can be moved, a specific one is determined which is determined by the position of the bolt in the eccentric bushing so that an adjustment is possible i8o ° can take place when the center axis of the piston pin coincides with the longitudinal center axis of the piston should fall into a plane. But this is a main condition for the one-sided Load on the piston and the one-sided wear of the cylinder wall caused by it to avoid, whereby an oval run of the cylinder would take place.

Die Erfindung ist in der Zeichnung beispielsAveise dargestellt.The invention is illustrated by way of example in the drawing.

Mit α ist der Kolbenkörper bezeichnet, welcher in bekannter Weise mit den Kolbenringen b versehen ist. Der Kolbenbolzen e ist in der Buchse d exzentrisch befestigt, \velche ihrerseits in der Buchse h exzentrisch gelagert ist, die in einem Auge der Kolbenwandung drehbar und feststellbar lagert. Das Exzenter h kann zur Kolbenwandung verstellt werden, während eine zweite Verstellung des Exzenters d zum Exzenter Ii stattfinden kann, so daß der Exzenter d z. B. die Lage Ii einnimmt, während der Kolbenbolzen die Lage i oder f oder sonst eine beliebige Mittellage einnehmen kann. Die Exzenter sind zueinander so angeordnet, daß die Mittelachse des Kolbenbolzens immer mit der Längsmittelachse des Kolbens in eine Ebene fällt, d. h. daß der Kolbenbolzen e immer nur parallel zur Kolbenwandung bewegt werden kann. Auf diese Weise kann der Kompressionsraum bei einem Minimum bis zu einem Maximum beliebig einstellbar verändert werden. The piston body, which is provided with the piston rings b in a known manner, is denoted by α. The piston pin e is fastened eccentrically in the bushing d, and is in turn eccentrically mounted in the bushing h, which is rotatably and lockably mounted in one eye of the piston wall. The eccentric h can be adjusted to the piston wall, while a second adjustment of the eccentric d to the eccentric Ii can take place, so that the eccentric d z. B. assumes position Ii , while the piston pin can assume position i or f or any other central position. The eccentrics are arranged in such a way that the center axis of the piston pin always coincides with the longitudinal center axis of the piston, ie that the piston pin e can only be moved parallel to the piston wall. In this way, the compression space can be changed as desired from a minimum to a maximum.

Claims (1)

Patent-Anspruch: Patent claim: Verstellbare Kolbenbolzenlagerung für Verbrennungskraftmaschinen, dadurch gekennzeichnet, daß die Buchse (d), in welcher der Kolbenbolzen (e) exzentrisch befestigt ist, in einer zweiten Buchse (h) exzentrisch drehbar und feststellbar gelagert ist, die ihrerseits wiederum drehbar und feststellbar in die Kolbenwandung eingesetzt ist, so daß die Mittelachse des Kolbenbolzens bei Verstellung des Exzenters zur Kolbenwandung und der Exzenter zueinander immer mit der Längsmittelachse des Kolbens {a) in eine Ebene fällt.Adjustable piston pin mounting for internal combustion engines, characterized in that the socket (d), in which the piston pin (e) is eccentrically attached, is mounted eccentrically rotatable and lockable in a second socket (h) , which in turn is rotatably and lockably inserted into the piston wall is, so that the central axis of the piston pin when adjusting the eccentric to the piston wall and the eccentric to each other always coincides with the longitudinal center axis of the piston {a) in one plane. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT348555D Adjustable piston pin bearings for internal combustion engines Expired DE348555C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE348555T

Publications (1)

Publication Number Publication Date
DE348555C true DE348555C (en) 1922-02-10

Family

ID=6257473

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT348555D Expired DE348555C (en) Adjustable piston pin bearings for internal combustion engines

Country Status (1)

Country Link
DE (1) DE348555C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101462A1 (en) * 1980-01-30 1981-11-26 Steyr-Daimler-Puch AG, 1010 Wien INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL ENGINE, WITH A PISTON PISTON ENGINE
DE3108486A1 (en) * 1981-03-06 1982-09-16 Volkswagenwerk Ag, 3180 Wolfsburg Device for controlling the compression ratio of an Otto cycle reciprocating piston internal combustion engine
DE4040274A1 (en) * 1990-12-17 1992-06-25 Reinhard Weber Reciprocating piston IC engine - has dead centre adjustable dependent upon temp.
DE10026634A1 (en) * 2000-05-29 2001-12-13 Meta Motoren Energietech Device to modify compression of cylinder in piston engine; has connecting rod mounted to piston by eccentric element rigidly fixed to oscillating element to alter position of eccentric element
US6581552B2 (en) 2000-05-29 2003-06-24 Meta Motoren-Und Energie-Technik Gmbh Apparatus for changing the compression of a cylinder of a piston engine
FR2857408A1 (en) * 2003-07-09 2005-01-14 Inst Francais Du Petrole Internal combustion engine, has moving unit with telescopic parts, protuberance, and recess for stroke of piston beyond top dead center during exhaust phase of engine, where piston performs stroke in combustion chamber
WO2010124971A1 (en) 2009-04-29 2010-11-04 Avl List Gmbh Apparatus for modifying the piston kinematics of an internal combustion engine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101462A1 (en) * 1980-01-30 1981-11-26 Steyr-Daimler-Puch AG, 1010 Wien INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL ENGINE, WITH A PISTON PISTON ENGINE
DE3108486A1 (en) * 1981-03-06 1982-09-16 Volkswagenwerk Ag, 3180 Wolfsburg Device for controlling the compression ratio of an Otto cycle reciprocating piston internal combustion engine
DE4040274A1 (en) * 1990-12-17 1992-06-25 Reinhard Weber Reciprocating piston IC engine - has dead centre adjustable dependent upon temp.
DE10026634A1 (en) * 2000-05-29 2001-12-13 Meta Motoren Energietech Device to modify compression of cylinder in piston engine; has connecting rod mounted to piston by eccentric element rigidly fixed to oscillating element to alter position of eccentric element
DE10026634C2 (en) * 2000-05-29 2003-01-30 Meta Motoren Energietech Device for changing the compression of a cylinder of a reciprocating piston internal combustion engine
US6581552B2 (en) 2000-05-29 2003-06-24 Meta Motoren-Und Energie-Technik Gmbh Apparatus for changing the compression of a cylinder of a piston engine
FR2857408A1 (en) * 2003-07-09 2005-01-14 Inst Francais Du Petrole Internal combustion engine, has moving unit with telescopic parts, protuberance, and recess for stroke of piston beyond top dead center during exhaust phase of engine, where piston performs stroke in combustion chamber
WO2010124971A1 (en) 2009-04-29 2010-11-04 Avl List Gmbh Apparatus for modifying the piston kinematics of an internal combustion engine

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