WO2010124971A1 - Einrichtung zur modifikation der kolbenkinematik einer brennkraftmaschine - Google Patents
Einrichtung zur modifikation der kolbenkinematik einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2010124971A1 WO2010124971A1 PCT/EP2010/055235 EP2010055235W WO2010124971A1 WO 2010124971 A1 WO2010124971 A1 WO 2010124971A1 EP 2010055235 W EP2010055235 W EP 2010055235W WO 2010124971 A1 WO2010124971 A1 WO 2010124971A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- piston pin
- connecting rod
- bearing
- torsion spring
- 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.)
- Ceased
Links
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
-
- 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
- F02B75/044—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of an adjustable piston 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
- F02B75/04—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
- 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
Definitions
- the invention relates to a device for modifying the piston kinematics of an internal combustion engine with at least one reciprocating piston in a cylinder, which is connected via a piston pin pivotally connected to a connecting rod, wherein the piston pin rotatably in at least one piston pin bearing of the piston, as well as in a connecting rod bearing the connecting rod is mounted, wherein the Kobenbolzen in at least one bearing portion of the piston pin bearing and / or the connecting rod bearing has an eccentric, and wherein the piston pin is rotatable by a rotating device.
- a reciprocating internal combustion engine with at least one adjustable variable compression ratio by means of an adjusting mechanism which comprises at least one arranged in a connecting rod eye or a Hublagerauge a connecting rod eccentric for changing an effective length of the connecting rod.
- the eccentric is movable by means of a movement of the connecting rod caused by the torque. The adjustment of the eccentric takes place via an adjusting device.
- DE 348 555 A discloses an adjustable piston pin bearing for internal combustion engines, wherein the socket, in which the piston pin is mounted eccentrically, is rotatably mounted eccentrically and lockable in a second socket.
- a similar construction is also known from GB 412 781 A.
- a reciprocating internal combustion engine with temperature-dependent adjusting dead center wherein the piston pin has an eccentricity in the region of the connecting rod relative to its protruding ends thereof.
- the piston pin mounted in the piston is rigidly connected to a torsion element, which in turn is in rigid connection with the piston.
- This torsion element consists of a memory metal.
- the object of the invention is to allow as simple as possible in an internal combustion engine, a limitation of the peak pressure.
- the rotating device is formed by a torsion spring and that the piston pin against the force of the torsion spring from a rest position in at least one pressure limiting position is rotatable, wherein preferably the eccentric is arranged in the region of the connecting rod bearing.
- a spring-loaded latching device acts on a piston pin fixed rotational stop at least in the rest position, so that the piston pin is held in the rest position, wherein preferably the latching device by a radially by a compression spring is formed against the piston pin fixed rotation stop locking slide, wherein preferably the biasing force of the compression spring is adjustable.
- the locking slide can have at least one start-up ramp, which is run over by the piston-fixed rotational stop upon rotation of the piston pin.
- At least one eccentric having, both in the piston, and in a connecting rod rotatably mounted piston pin is held by a torsion spring in a rest position and at a defined cylinder pressure is exceeded is rotated against the force of the torsion spring in a pressure limiting position to reduce the compression ratio.
- the rotation of the eccentric piston pin is suppressed up to a specified cylinder pressure.
- it supports the return of the piston pin in the stop position after falling below the combustion chamber pressure below a second level to be determined.
- FIG. 1 shows a piston of an internal combustion engine with a device according to the invention for the modification of the piston kinematics in a section in the piston axis.
- Figure 2 shows this piston in a section transverse to the piston axis.
- Figure 3 shows the piston in a section along the line III-III in Fig. 1.
- 4 shows the torsion spring of the device in an oblique view; and
- FIG. 5 shows a piston pin in an oblique view.
- FIGS. 1 and 2 show a piston 1 of a reciprocating internal combustion engine, which is pivotably connected to the connecting rod 2 via a piston pin 4 mounted in a connecting rod bearing 3 of a connecting rod 2.
- the piston pin 4 is rotatably connected to the piston 1 via piston pin bearing 5 and has in the region of the connecting rod bushing 3 an eccentric 6, whose central axis 6a is spaced from the axis of the piston pin bearing 5a. This eccentricity is denoted by e in the figures.
- a torsion spring 7 By a torsion spring 7, the hollow executed piston pin 4 is pressed into a rest position, wherein a piston pin fixed rotation stop 8 rests on a piston-fixed rotational stop 9.
- Reference numeral 7a denotes a piston-fixed leg of the torsion spring 7
- reference numeral 7b denotes a piston pin-fixed leg of the torsion spring 7.
- the piston pin-fixed leg 7b is inserted in a receptacle 10 of the piston pin 4.
- the piston pin 4 In the rest position, the piston pin 4 is further held by a locking slide 11 having latching device 12.
- the locking slide 11 is pressed by an adjustable by a screw 13 compression spring 14 to the piston pin fixed stop 8.
- the locking slide 11 has a starting ramp 15, which can be run over by the piston pin fixed rotational stop 8 upon rotation of the piston pin 4.
- the piston pin 4 designed as an eccentric shaft is oriented in a piston-tight manner during the compression phase of the cylinder via the piston-fixed rotational stop 9 and the latching device 12 in the angular position ⁇ o shown in FIGS. 2 and 3.
- the eccentricity e exerts on the gas forces a moment M d - GaS on the eccentric 6 according to the equation
- M a - gas F gas - e - sin ⁇ 0 (1) off.
- M d _ A M d _ gas + ⁇ M d _ R _ ⁇ (2)
- the restoring moment M d-ruC k is in this case composed of the preload M d-dre h and the moment M d-ras t of the spring-loaded latching device 12:
- This relative piston stroke causes approximately an adiabatic expansion in the combustion chamber, whereby the combustion chamber pressure is reduced compared to a central piston engine.
- the desired release pressure (eg 120 bar) can be set.
- the system design is now carried out in such a way that in partial load operation, the tripping torque M dA is smaller than the restoring torque M d-jerk.
- the cylinder pressure during combustion exceeds the trigger pressure.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010800193536A CN102439272A (zh) | 2009-04-29 | 2010-04-21 | 用于修改内燃机的活塞运动学的装置 |
| DE112010001815T DE112010001815A5 (de) | 2009-04-29 | 2010-04-21 | Einrichtung zur modifikation der kolbenkinematik einer brennkraftmaschine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA657/2009 | 2009-04-29 | ||
| AT6572009A AT506470B1 (de) | 2009-04-29 | 2009-04-29 | Einrichtung zur modifikation der kolbenkinematik einer brennkraftmaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010124971A1 true WO2010124971A1 (de) | 2010-11-04 |
Family
ID=41057719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2010/055235 Ceased WO2010124971A1 (de) | 2009-04-29 | 2010-04-21 | Einrichtung zur modifikation der kolbenkinematik einer brennkraftmaschine |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102439272A (de) |
| AT (1) | AT506470B1 (de) |
| DE (1) | DE112010001815A5 (de) |
| WO (1) | WO2010124971A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013050098A1 (de) * | 2011-10-08 | 2013-04-11 | Daimler Ag | Verfahren zum variablen einstellen eines verdichtungsverhältnisses eines brennraums einer verbrennungskraftmaschine |
| WO2013050100A1 (de) * | 2011-10-08 | 2013-04-11 | Daimler Ag | Kolbenanordnung für einen ein veränderbares kompressionsverhältnis aufweisenden brennraum einer verbrennungskraftmaschine |
| WO2013160535A1 (en) * | 2012-04-25 | 2013-10-31 | Wärtsilä Finland Oy | A piston pin assembly |
| DE102011111816B4 (de) * | 2011-08-27 | 2021-07-08 | Volkswagen Aktiengesellschaft | Vorrichtung mit Exzenter-Kolbenbolzen zur Erzielung eines variablen Verdichtungsverhältnisses in einem Hubkolbenmotor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013225763A1 (de) * | 2013-12-12 | 2015-06-18 | Beijing Zhi KE Investment and Management Co.,Ltd. | Kolbenstangebaugruppe und Verbrennungsmotor mit solcher Kolbenstangebaugruppe |
| JP6384020B2 (ja) * | 2015-01-26 | 2018-09-05 | 日立オートモティブシステムズ株式会社 | 内燃機関用リンク機構のアクチュエータ |
| CN112963243A (zh) * | 2021-03-23 | 2021-06-15 | 一汽解放汽车有限公司 | 一种发动机可变压缩比机构及控制方法 |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE348555C (de) | 1922-02-10 | Franz Stock Fa | Verstellbare Kolbenbolzenlagerung fuer Verbrennungskraftmaschinen | |
| GB412781A (en) | 1933-07-26 | 1934-07-05 | Leo Vitalba | Improvements relating to means for varying the compression ratio of internal combustion engines |
| SU661128A1 (ru) * | 1977-02-14 | 1979-05-07 | Головное Специализированное Конструкторское Бюро По Двигателям Средней Мощности | Двигатель внутреннего сгорани |
| US4266443A (en) * | 1978-07-06 | 1981-05-12 | Mcwhorter Edward M | Articulating guide spring |
| DE3108486A1 (de) | 1981-03-06 | 1982-09-16 | Volkswagenwerk Ag, 3180 Wolfsburg | Einrichtung zur steuerung des verdichtungsverhaeltnisses einer otto-hubkolben-brennkraftmaschine |
| JPS5867937A (ja) | 1981-10-20 | 1983-04-22 | Toyota Motor Corp | 内熱機関の可変圧縮比機構 |
| JPS6235034A (ja) | 1985-08-09 | 1987-02-16 | Toyota Motor Corp | 偏心ベアリングのロツク機構 |
| US4721073A (en) | 1985-10-25 | 1988-01-26 | Toyota Jidosha Kabushiki Kaisha | Compression ratio changing device using an eccentric bearing for an internal combustion engine |
| EP0297904A2 (de) | 1987-07-03 | 1989-01-04 | Honda Giken Kogyo Kabushiki Kaisha | Vorrichtung zum Verändern des Kompressionsverhältnisses für Brennkraftmaschinen |
| DE3818357A1 (de) | 1987-06-01 | 1989-03-02 | Toyota Motor Co Ltd | Vorrichtungen zum blockieren der drehung eines exzentrischen lagers einer vorrichtung zum aendern des verdichtungsverhaeltnisses |
| JPH0176531U (de) * | 1987-11-11 | 1989-05-24 | ||
| JPH0299729A (ja) * | 1988-10-04 | 1990-04-11 | Mazda Motor Corp | 往復型ピストンエンジンのピストン連結構造 |
| DE4040274A1 (de) | 1990-12-17 | 1992-06-25 | Reinhard Weber | Hubkolben-verbrennungsmotor mit temperaturabhaengig sich verstellendem totpunkt |
| WO1995008705A1 (en) | 1991-11-22 | 1995-03-30 | Routery Edward E | Variable length connecting rod for internal combustion engine |
| WO2007043093A1 (en) * | 2005-10-14 | 2007-04-19 | Hipass Srl | Automatic regulator of the compression-ratio for explosion engines |
| DE102005055199A1 (de) | 2005-11-19 | 2007-05-24 | Fev Motorentechnik Gmbh | Hubkolbenverbrennungskraftmaschine mit einstellbar veränderbarem Verdichtungsverhältnis |
-
2009
- 2009-04-29 AT AT6572009A patent/AT506470B1/de not_active IP Right Cessation
-
2010
- 2010-04-21 CN CN2010800193536A patent/CN102439272A/zh active Pending
- 2010-04-21 WO PCT/EP2010/055235 patent/WO2010124971A1/de not_active Ceased
- 2010-04-21 DE DE112010001815T patent/DE112010001815A5/de not_active Withdrawn
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE348555C (de) | 1922-02-10 | Franz Stock Fa | Verstellbare Kolbenbolzenlagerung fuer Verbrennungskraftmaschinen | |
| GB412781A (en) | 1933-07-26 | 1934-07-05 | Leo Vitalba | Improvements relating to means for varying the compression ratio of internal combustion engines |
| SU661128A1 (ru) * | 1977-02-14 | 1979-05-07 | Головное Специализированное Конструкторское Бюро По Двигателям Средней Мощности | Двигатель внутреннего сгорани |
| US4266443A (en) * | 1978-07-06 | 1981-05-12 | Mcwhorter Edward M | Articulating guide spring |
| DE3108486A1 (de) | 1981-03-06 | 1982-09-16 | Volkswagenwerk Ag, 3180 Wolfsburg | Einrichtung zur steuerung des verdichtungsverhaeltnisses einer otto-hubkolben-brennkraftmaschine |
| JPS5867937A (ja) | 1981-10-20 | 1983-04-22 | Toyota Motor Corp | 内熱機関の可変圧縮比機構 |
| JPS6235034A (ja) | 1985-08-09 | 1987-02-16 | Toyota Motor Corp | 偏心ベアリングのロツク機構 |
| US4721073A (en) | 1985-10-25 | 1988-01-26 | Toyota Jidosha Kabushiki Kaisha | Compression ratio changing device using an eccentric bearing for an internal combustion engine |
| DE3818357A1 (de) | 1987-06-01 | 1989-03-02 | Toyota Motor Co Ltd | Vorrichtungen zum blockieren der drehung eines exzentrischen lagers einer vorrichtung zum aendern des verdichtungsverhaeltnisses |
| EP0297904A2 (de) | 1987-07-03 | 1989-01-04 | Honda Giken Kogyo Kabushiki Kaisha | Vorrichtung zum Verändern des Kompressionsverhältnisses für Brennkraftmaschinen |
| JPH0176531U (de) * | 1987-11-11 | 1989-05-24 | ||
| JPH0299729A (ja) * | 1988-10-04 | 1990-04-11 | Mazda Motor Corp | 往復型ピストンエンジンのピストン連結構造 |
| DE4040274A1 (de) | 1990-12-17 | 1992-06-25 | Reinhard Weber | Hubkolben-verbrennungsmotor mit temperaturabhaengig sich verstellendem totpunkt |
| WO1995008705A1 (en) | 1991-11-22 | 1995-03-30 | Routery Edward E | Variable length connecting rod for internal combustion engine |
| WO2007043093A1 (en) * | 2005-10-14 | 2007-04-19 | Hipass Srl | Automatic regulator of the compression-ratio for explosion engines |
| DE102005055199A1 (de) | 2005-11-19 | 2007-05-24 | Fev Motorentechnik Gmbh | Hubkolbenverbrennungskraftmaschine mit einstellbar veränderbarem Verdichtungsverhältnis |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011111816B4 (de) * | 2011-08-27 | 2021-07-08 | Volkswagen Aktiengesellschaft | Vorrichtung mit Exzenter-Kolbenbolzen zur Erzielung eines variablen Verdichtungsverhältnisses in einem Hubkolbenmotor |
| WO2013050098A1 (de) * | 2011-10-08 | 2013-04-11 | Daimler Ag | Verfahren zum variablen einstellen eines verdichtungsverhältnisses eines brennraums einer verbrennungskraftmaschine |
| WO2013050100A1 (de) * | 2011-10-08 | 2013-04-11 | Daimler Ag | Kolbenanordnung für einen ein veränderbares kompressionsverhältnis aufweisenden brennraum einer verbrennungskraftmaschine |
| CN103874836A (zh) * | 2011-10-08 | 2014-06-18 | 戴姆勒股份公司 | 用于可变地调节内燃发动机的燃烧室的压缩比的方法 |
| CN103874837A (zh) * | 2011-10-08 | 2014-06-18 | 戴姆勒股份公司 | 用于具有可变压缩比的内燃机的燃烧室的活塞布置 |
| US9309831B2 (en) | 2011-10-08 | 2016-04-12 | Daimler Ag | Piston arrangement for a combustion chamber of an internal combustion engine, having a variable compression ratio |
| CN103874837B (zh) * | 2011-10-08 | 2016-08-17 | 戴姆勒股份公司 | 用于具有可变压缩比的内燃机的燃烧室的活塞布置 |
| WO2013160535A1 (en) * | 2012-04-25 | 2013-10-31 | Wärtsilä Finland Oy | A piston pin assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| AT506470A2 (de) | 2009-09-15 |
| DE112010001815A5 (de) | 2012-05-31 |
| AT506470B1 (de) | 2010-12-15 |
| CN102439272A (zh) | 2012-05-02 |
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