EP1340893A2 - Hubkolben-Brennkraftmaschine - Google Patents
Hubkolben-Brennkraftmaschine Download PDFInfo
- Publication number
- EP1340893A2 EP1340893A2 EP03001925A EP03001925A EP1340893A2 EP 1340893 A2 EP1340893 A2 EP 1340893A2 EP 03001925 A EP03001925 A EP 03001925A EP 03001925 A EP03001925 A EP 03001925A EP 1340893 A2 EP1340893 A2 EP 1340893A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinders
- internal combustion
- combustion engine
- crankshaft
- reciprocating internal
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
- F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
-
- 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
- F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length
-
- 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
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
- F02B75/228—Multi-cylinder engines with cylinders in V, fan, or star arrangement with cylinders arranged in parallel banks
Definitions
- the invention relates to a reciprocating internal combustion engine according to the preamble of claim 1.
- the document DE 43 12 954 A1 discloses such a reciprocating internal combustion engine, which with a device for variable Compression of the mixture in the combustion chamber equipped is.
- This variable compression device comprises an upper, pivotally connected to the piston connecting rod and a lower, pivotally connected to the crankshaft cross lever.
- the Both parts are connected by a joint.
- a control lever whose position is variably adjustable.
- the control lever is also the pivot point between Cross lever and connecting rod adjusted. This can be different kinematic relationships with different upper and lower Set dead points of the piston in the cylinder of the internal combustion engine without changing the design dimensions the piston, the connecting rod or a journal on the Crankshaft would be required.
- the invention is based on the problem, a garumblede Reciprocating internal combustion engine with two rows of cylinders with variable to create adjustable compression ratio.
- the reciprocating internal combustion engine according to the invention agreed the advantages of a double-row internal combustion engine with parallel arranged rows of cylinders with the advantages of a variable Compression.
- the two rows of cylinders of the reciprocating internal combustion engine are arranged in such a way to each other, that the cylinder longitudinal axes of the cylinder from the first row of cylinders and the second row of cylinders run parallel or include only a small angle, in particular is less than 10 ° and may be for example 5 °.
- the kinematics for the variable adjustment of the compression ratio includes a cross lever as a transfer link between the connecting rod and the crankshaft, which is transverse to the crankshaft longitudinal axis is arranged. This will be the opportunity opened that despite the approximately parallel orientation of the cylinder the first and second row of cylinders the connecting rods each Piston in a movement between top and bottom dead center at each position of the variable setting device the compression ratio only by a relative pivoted small angle relative to the cylinder axis must be because the coupling point between the connecting rod and cross lever expedient approximately on an extension the cylinder longitudinal axis is located.
- the lateral offset between cylinder longitudinal axis and crankshaft is bridged by means of the cross lever.
- crankshaft in the manner in Regarding the two rows of cylinders is arranged, that the Crankshaft longitudinal axis between the cylinder longitudinal axes of the cylinder the first and second row of cylinders is located.
- the crankshaft is in particular symmetrical or slightly asymmetrical below the first and second row of cylinders. In this arrangement is the crankshaft of the pistons of both rows of cylinders uniformly applied force, with the power transmission between the connecting rods and the crankshaft via the cross lever.
- each piston of the internal combustion engine is one Assigned cross lever.
- each cross lever of an associated, adjustable Control lever is acted upon.
- this is the linkage the control lever on the traverse on the connecting rod facing away Page to choose.
- each cylinder bank a Actuator, in particular an eccentric shaft assigned is.
- eccentric shaft As an alternative to an eccentric shaft come other options for adjusting the control lever into consideration. These can be controlled electrically, pneumatically or hydraulically. The use of cam gears is also possible.
- the reciprocating internal combustion engine 1 shown in FIG. 1 has two cylinder banks or rows 2 and 3, which are parallel to each other are arranged.
- the cylinders 2a, b, c of the first row of cylinders 2 are to the cylinders 3a, b, c of the second cylinder bank 3 aligned in parallel so that the cylinder axes of all Cylinder of the internal combustion engine 1 run parallel.
- the two rows of cylinders 2 and 3 are separated by a separation. 4 separated, which runs in the longitudinal direction of the internal combustion engine.
- the cylinders 2a, b, c of the first cylinder bank 2 are opposite the cylinders 3a, b, c of the second row of cylinders 3 in the longitudinal direction the internal combustion engine staggered. hereby results between adjacent cylinders of the two rows of cylinders an offset 1, measured between the cylinder longitudinal axes 10 and 11 of the cylinders.
- the offset 1, the less than The radius r of each cylinder can be obtained in particular due to the smaller design without intermediate cheeks on the hub bearings.
- crankshaft 5 which is rotatably mounted in the housing-fixed base bearings 6a, 6b, 6c and 6d and is driven by the reciprocating piston in the cylinders.
- base bearings 6a, 6b, 6c and 6d Between the basic bearings 6a, 6b, 6c and 6d are located corresponding to the number of cylinders of a row of cylinders a total of three crankshaft sections between each two adjacent base camps.
- crankshaft section are integrally formed with the crankshaft 5 crank pin 7 and 8, which have a radial offset a 1 and a 2 relative to the crankshaft longitudinal axis 9.
- crank pins 7 and 8 connecting rods of the pistons of the cylinders 3a and 2a engage, which are assigned to different cylinder rows and immediately adjacent.
- the crank pins 7 and 8 are in the longitudinal direction of the crankshaft longitudinal axis 9 seen at the height of the cylinder axes 10 and 11 of the cylinder 3a and 2a.
- crank pins 7 and 8 are connected to the crankshaft 5 in a different radial distance a 1 and a 2 to the crankshaft longitudinal axis 9. This makes it possible to create equal leverage for adjacent cylinders of different cylinder rows when using the device described in Fig. 3 for variable compression.
- Fig. 3 shows a section through adjacent cylinders 2c and 3c from the first and second row of cylinders. Shown is the kinematics for variable compression adjustment, wherein the the cylinder 2c associated kinematics with a solid line and the kinematics associated with the cylinder 3a are indicated by dashed lines is.
- the pistons 19 and 20 in the cylinders 2c and 3c are connected via connecting rods 12 and 13 with transverse levers 14 and 15, which rotatably on the crank pin 7 and 8 of the piston shaft fifth are stored.
- the connecting rods 12 and 13 are on both sides of the Pistons 19 and 20 as well as on the side of the transverse lever 14 and 15, respectively articulated via joints 12a, 12b and 13a, 13b.
- the joints 12b and 13b of the connecting rods 12 and 13 respectively associated Cross lever 14 and 15 are at a distance to the associated Stroke pin 7 or 8.
- the crankshaft 5 is symmetrical to the Parting plane 4 between the two rows of cylinders of the internal combustion engine; the crankshaft longitudinal axis 9 lies in the parting plane 4.
- the connecting rods 12 and 13 extend approximately along the cylinder longitudinal axes 10 and 11 and are in operation of the internal combustion engine compared to the cylinder longitudinal axes only by a relatively small angular amount relative to the cylinder longitudinal axis deflected, which is small enough to ensure that that the inner walls of the cylinder from the connecting rods 12 and 13, respectively not to be touched.
- the connecting rods 12 and 13 are on this side and beyond the parting plane 4 or the crankshaft longitudinal axis 9.
- Both transverse levers 14 and 15 extend to the same side the engine and are there via joints 16a and 17a connected to control levers 16 and 17, which on their the Querhebeln opposite side over other joints 16b and 17b hingedly coupled to an eccentric shaft 18 and from this kinematically constrained.
- the eccentric shaft 18 extends parallel to the crankshaft 5.
- the joints 16a and 17a between the cross levers 14 and 15 and the control levers 16 and 17th have coaxial hinge axes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims (11)
- Hubkolben-Brennkraftmaschine, mit zwei nebeneinander liegenden Zylinderreihen (2, 3) mit jeweils mindestens zwei Zylindern (2a, 2b, 2c, 3a, 3b, 3c) und mit einem in den Zylindern verschieblich angeordneten Kolben (19, 20), der mit einem Pleuel (12, 13) gelenkig gekoppelt ist, dessen Bewegung auf eine Kurbelwelle (5) übertragbar ist, wobei zwischen dem Pleuel (12, 13) und der Kurbelwelle (5) ein Übertragungsglied vorgesehen ist, dessen Bewegung über einen verstellbaren Steuerhebel (16, 17) manipulierbar ist,
dadurch gekennzeichnet,dass die beiden Zylinderreihen (2, 3) in der Weise zueinander angeordnet sind, dass die Zylinderlängsachsen (10, 11) von Zylindern der ersten und der zweiten Zylinderreihe (2, 3) zumindest annähernd parallel verlaufen,dass das Übertragungsglied als Querhebel (14, 15) ausgebildet ist, der quer zur Kurbelwellenlängsachse (9) angeordnet ist und auf seiner dem Pleuel (12, 13) abgewandten Seite von dem Steuerhebel (16, 17) beaufschlagt wird,dass die Kurbelwellenlängsachse (9) zwischen den Zylinderlängsachsen (10, 11) der Zylinder der ersten und zweiten Zylinderreihe (2, 3) liegt. - Hubkolben-Brennkraftmaschine nach Anspruch 1,
dadurch gekennzeichnet, dass die Pleuel (12, 13) von Kolben (19, 20) benachbarter Zylinder der ersten und zweiten Zylinderreihe (2, 3) auf gegenüberliegenden Seiten der Kurbelwellenlängsachse (9) mit jeweils einem Querhebel (14, 15) gekoppelt sind und jeder Querhebel (14, 15) von einem verstellbaren Steuerhebel (16, 17) beaufschlagt ist. - Hubkolben-Brennkraftmaschine nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Zylinder (2a, 2b, 2c) der ersten Zylinderreihe (2) gegenüber den Zylindern (3a, 3b, 3c) der zweiten Zylinderreihe (3) in Richtung der Kurbelwellenlängsachse (9) verschoben sind. - Hubkolben-Brennkraftmaschine nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Querhebel (14, 15) benachbarter Zylinder aus der ersten und zweiten Zylinderreihe (2, 3) innerhalb eines gemeinsamen Kurbelwellenabschnittes zwischen zwei benachbarten Grundlagern (6a, 6b, 6c, 6d) liegen, in denen die Kurbelwelle (5) gelagert ist. - Hubkolben-Brennkraftmaschine nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass zwischen zwei Hubzapfen (7, 8), die auf der Kurbelwelle (5) angeordnet sind, ein weiteres Grundlager liegt. - Hubkolben-Brennkraftmaschine nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass zwischen den beiden Hubzapfen (7, 8) eine Zwischenwange liegt. - Hubkolben-Brennkraftmaschine nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet, dass die zwei Hubzapfen (7, 8) in gleichem oder unterschiedlichem radialen Abstand (a1, a2) zur Kurbelwellenlängsachse (9) auf der Kurbelwelle (5) angeordnet sind, wobei die beiden Hubzapfen (7, 8) die Querhebel (14, 15) benachbarter Zylinder der ersten und zweiten Zylinderreihe (2, 3) beaufschlagen. - Hubkolben-Brennkraftmaschine nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass die Steuerhebel (16, 17), welche Querhebeln (14, 15) benachbarter Zylinder der ersten und zweiten Zylinderreihe (2, 3) zugeordnet sind, auf der gleichen Seite der Brennkraftmaschine (1) liegen. - Hubkolben-Brennkraftmaschine nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass die Steuerhebel (16, 17) auf gegenüberliegenden Seiten der Brennkraftmaschine (1) liegen. - Hubkolben-Brennkraftmaschine nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass die Steuerhebel (16, 17), welche Querhebeln (14, 15) benachbarter Zylinder der ersten und zweiten Zylinderreihe (2, 3) zugeordnet sind, von einem gemeinsamen Betätigungsorgan beaufschlagt werden. - Hubkolben-Brennkraftmaschine nach Anspruch 10,
dadurch gekennzeichnet, dass als Betätigungsorgan zumindest eine Exzenterwelle (18) vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10208510 | 2002-02-27 | ||
DE10208510A DE10208510A1 (de) | 2002-02-27 | 2002-02-27 | Hubkolben-Brennkraftmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1340893A2 true EP1340893A2 (de) | 2003-09-03 |
EP1340893A3 EP1340893A3 (de) | 2004-01-02 |
EP1340893B1 EP1340893B1 (de) | 2005-06-22 |
Family
ID=27675071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03001925A Expired - Fee Related EP1340893B1 (de) | 2002-02-27 | 2003-01-30 | Hubkolben-Brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US6761137B2 (de) |
EP (1) | EP1340893B1 (de) |
JP (1) | JP2003269200A (de) |
DE (2) | DE10208510A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6938589B2 (en) * | 2002-11-07 | 2005-09-06 | Powervantage Engines, Inc. | Variable displacement engine |
DE102005054760A1 (de) * | 2005-11-17 | 2007-05-31 | Daimlerchrysler Ag | Hubkolbenbrennkraftmaschine mit veränderlichem Verdichtungsverhältnis |
GB2575257B (en) | 2018-07-02 | 2020-11-04 | Caterpillar Energy Solutions Gmbh | Apparatus for positioning a connecting rod relative to components underlying a cylinder of an engine block |
DE102018006977B4 (de) * | 2018-09-04 | 2020-07-09 | Daniel Kropp | Motor mit variablem Totpunkt |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4312954A1 (de) | 1993-04-21 | 1994-10-27 | Ifa Motorenwerke Nordhausen Gm | Kinematik an Kolbenhubmaschine |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR607215A (fr) * | 1925-12-01 | 1926-06-28 | Chambre de compression variable | |
GB353986A (en) * | 1930-05-27 | 1931-08-06 | Henri Kundig | Improvements in a variable and regulatable compression chamber for internal combustion or other engines |
US1901263A (en) * | 1930-07-04 | 1933-03-14 | Ruud Otto Severin | Internal combustion engine |
US2062209A (en) * | 1934-02-03 | 1936-11-24 | David F Cook | Internal combustion engine |
US2909164A (en) * | 1955-07-01 | 1959-10-20 | Arnold E Biermann | Multi-cylinder internal combustion engines |
DE1800780A1 (de) * | 1968-10-03 | 1970-07-23 | Daimler Benz Ag | Motorenbaureihe von Mehrzylinder-Zweireihen-Kurbelwellenmotoren |
US4270495A (en) * | 1979-05-31 | 1981-06-02 | General Motors Corporation | Variable displacement piston engine |
GB2249131A (en) * | 1990-10-24 | 1992-04-29 | Ford Motor Co | Variable compression ratio i.c. engine |
AU6284794A (en) * | 1993-12-28 | 1995-07-17 | Emilio Galiano Garcia | Internal combustion beam engine |
JPH09228858A (ja) * | 1996-02-24 | 1997-09-02 | Hondou Jutaku:Kk | レシプロエンジン |
US5758611A (en) * | 1997-04-15 | 1998-06-02 | Collins; Imack L. | Flex-rod |
-
2002
- 2002-02-27 DE DE10208510A patent/DE10208510A1/de not_active Withdrawn
-
2003
- 2003-01-30 DE DE50300668T patent/DE50300668D1/de not_active Expired - Fee Related
- 2003-01-30 EP EP03001925A patent/EP1340893B1/de not_active Expired - Fee Related
- 2003-02-25 US US10/373,892 patent/US6761137B2/en not_active Expired - Fee Related
- 2003-02-26 JP JP2003050143A patent/JP2003269200A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4312954A1 (de) | 1993-04-21 | 1994-10-27 | Ifa Motorenwerke Nordhausen Gm | Kinematik an Kolbenhubmaschine |
Also Published As
Publication number | Publication date |
---|---|
JP2003269200A (ja) | 2003-09-25 |
DE10208510A1 (de) | 2003-09-11 |
US20030159664A1 (en) | 2003-08-28 |
US6761137B2 (en) | 2004-07-13 |
DE50300668D1 (de) | 2005-07-28 |
EP1340893B1 (de) | 2005-06-22 |
EP1340893A3 (de) | 2004-01-02 |
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