DE102011053333A1 - Multicylinder internal combustion engine e.g. petrol engine has groups of cylinders comprising individual cylinders which are actuated variably by adjusting units of inlet and outlet valves - Google Patents
Multicylinder internal combustion engine e.g. petrol engine has groups of cylinders comprising individual cylinders which are actuated variably by adjusting units of inlet and outlet valves Download PDFInfo
- Publication number
- DE102011053333A1 DE102011053333A1 DE102011053333A DE102011053333A DE102011053333A1 DE 102011053333 A1 DE102011053333 A1 DE 102011053333A1 DE 102011053333 A DE102011053333 A DE 102011053333A DE 102011053333 A DE102011053333 A DE 102011053333A DE 102011053333 A1 DE102011053333 A1 DE 102011053333A1
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- Germany
- Prior art keywords
- cylinder
- valves
- internal combustion
- combustion engine
- cylinders
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
- F01L2001/0537—Double overhead camshafts [DOHC]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L2001/34486—Location and number of the means for changing the angular relationship
- F01L2001/34496—Two phasers on different camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
- F01L2013/001—Deactivating cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/06—Timing or lift different for valves of same cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/08—Timing or lift different for valves of different cylinders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
Die Erfindung betrifft eine mehrzylindrige Brennkraftmaschine mit mindestens zwei Zylindergruppen, die einzelne Zylinder aufweisen, wobei einzelne Zylinder im ständigen Einsatz sind und weitere Zylinder unabhängig von den im Einsatz befindlichen Zylindern zu- bzw. abschaltbar sind, wobei zumindest die Zylinder einer Zylindergruppe mittels mindestens einer Verstelleinrichtung variabel betätigbare Gaswechselventile aufweist und wobei mindestens eine Luftzufuhranordnung vorgesehen ist. Des Weiteren betrifft die Erfindung ein Verfahren zum Betreiben einer derartigen mehrzylindrigen Brennkraftmaschine. The invention relates to a multi-cylinder internal combustion engine having at least two cylinder groups having individual cylinders, wherein individual cylinders are in constant use and more cylinders are switched on or off independently of the cylinders in use, wherein at least the cylinder of a cylinder group by means of at least one adjustment has variably actuated gas exchange valves and wherein at least one air supply arrangement is provided. Furthermore, the invention relates to a method for operating such a multi-cylinder internal combustion engine.
Eine derartige Brennkraftmaschine sowie ein Verfahren zum Betreiben einer derartigen Brennkraftmaschine sind aus der
Aufgabe der Erfindung ist es daher, eine mehrzylindrige Brennkraftmaschine bzw. ein Verfahren zum Betreiben einer derartigen mehrzylindrigen Brennkraftmaschine bereitzustellen, wodurch ein hoher Wirkungsgrad in nahezu allen Lastfällen gewährleistet ist. The object of the invention is therefore to provide a multi-cylinder internal combustion engine or a method for operating such a multi-cylinder internal combustion engine, whereby a high efficiency is ensured in almost all load cases.
Diese Aufgabe wird dadurch gelöst, dass die variabel betätigbaren Gaswechselventile sowohl Ein- als auch Auslassventile umfassen, wobei jeder Zylinder einer Zylindergruppe mittels Verstelleinrichtungen variabel betätigbare Ein- und Auslassventile aufweist, wobei den Einlassventilen und den Auslassventilen eines Zylinders jeweils eine Verstelleinrichtung zur variablen Betätigung zugeordnet ist. Auf diese Weise wird eine mehrzylindrige Brennkraftmaschine geschaffen, mit einem in vielen Lastbereichen bzw. Lastpunkten verbesserten Wirkungsgrad. Um eine möglichst große Variabilität zu schaffen, ist es vorteilhaft, wenn jeder Zylindergruppe eine Luftzufuhranordnung zugeordnet ist. Dies kann beispielsweise dadurch realisiert werden, dass bei zwei Zylindergruppen zwei Sauganlagen vorgesehen sind. This object is achieved in that the variably actuated gas exchange valves comprise both intake and exhaust valves, each cylinder of a cylinder group having variably operable intake and exhaust valves by means of adjusting, wherein the intake valves and the exhaust valves of a cylinder is associated with an adjusting device for variable actuation , In this way, a multi-cylinder internal combustion engine is provided with an improved efficiency in many load ranges or load points. In order to create the greatest possible variability, it is advantageous if each cylinder group is associated with an air supply arrangement. This can be realized, for example, by providing two suction systems in two cylinder groups.
In einer besonders vorteilhaften Ausführungsform weist jede Verstelleinrichtung jeweils unterschiedliche, auf einer Nockenwelle angeordnete Steuerorgangruppen mit Steuerorganen, denen in Höhe und Phasenlage variable Ventilhübe der Gaswechselventile zugeordnet sind, und jeweils mindestens eine Aktuatoreinrichtung auf, die einen Eingriff der Gaswechselventile mit den Steuerorganen ermöglicht. Hierbei können die Steuerorgane im Falle von Ventilhüben als Schiebenocken und im Falle eines Nullhubes als Wellenabschnitt ausgeführt sein. In a particularly advantageous embodiment, each adjusting device each have different, arranged on a camshaft Steuerorgangruppen with control elements, which are associated in height and phase variable valve lifts the gas exchange valves, and in each case at least one actuator, which allows engagement of the gas exchange valves with the control organs. In this case, the control members may be designed as a sliding cam in the case of valve lifts and as a shaft section in the case of a zero stroke.
In einer besonders vorteilhaften Ausführungsform sind eine Verstelleinrichtung der Einlassventile der ersten Zylindergruppe dreistufig mit drei Nocken und eine Verstelleinrichtung der Auslassventile der ersten Zylindergruppe zweistufig mit zwei Nocken ausgeführt, wobei eine Verstelleinrichtung der Einlassventile der zweiten Zylindergruppe dreistufig mit zwei Nocken und eine Verstelleinrichtung der Auslassventile der zweiten Zylindergruppe dreistufig mit zwei Nocken ausgeführt sind, wobei die jeweils erste Stufe der Verstelleinrichtungen der zweiten Zylindergruppe für Ein- und Auslassventile einen Nullhub bedingt. Durch eine derartige Ausführungsform kann gewährleistet werden, dass durch eine hohe Anzahl von Ventilhubkombinationen ein optimaler Wirkungsgrad für jeden Last- und Drehzahlbereich einstellbar ist. In a particularly advantageous embodiment, an adjustment of the intake valves of the first cylinder group in three stages with three cams and an adjustment of the exhaust valves of the first cylinder group in two stages with two cams, wherein an adjustment of the intake valves of the second cylinder group in three stages with two cams and an adjustment of the exhaust valves of the second Cylinder group are executed in three stages with two cams, wherein the respective first stage of the adjustment of the second cylinder group for inlet and outlet valves caused a zero stroke. By such an embodiment can be ensured that an optimal efficiency for each load and speed range can be adjusted by a high number of Ventilhubkombinationen.
Des Weiteren wird die Erfindung durch ein Verfahren zum Betreiben einer derartigen mehrzylindrigen Brennkraftmaschine gelöst, wobei durch eine Motorsteuerung zwei Hauptkennfeldbereiche vorgesehen werden, wobei der zweite Hauptkennfeldbereich dadurch beschrieben wird, dass dieser die Ventilhübe aller Zylindergruppen mit einer gleichen Hubhöhe in der höchsten Stufe erfasst und der erste Hauptkennfeldbereich dadurch beschrieben wird, dass dieser alle sonstigen Kombinationen von Ventilhüben aller Gaswechselventile aller Zylindergruppen erfasst, wobei der zweite Hauptkennfeldbereich erst bei einer hohen Last ab einer mittleren Drehzahl angewandt wird. Im Gegensatz zu den bekannten mehrzylindrigen Brennkraftmaschinen wird die erfindungsgemäße mehrzylindrige Brennkraftmaschine auch im niedrigen Drehzahlbereich und hohem Lastbereich mit nicht in voller Hubhöhe geöffneten Zylindergruppen betrieben. Entgegen der Annahme, dass ein hoher Lastbereich automatisch den Einsatz der größten Ventilhübe bedingen würde, hat sich herausgestellt, dass mit dem vorgestellten Konzept der Wirkungsgrad gegenüber herkömmlichen Brennkraftmaschinen noch einmal verbessert werden kann. Furthermore, the invention is solved by a method for operating such a multi-cylinder internal combustion engine, wherein two main map areas are provided by an engine control, wherein the second main map area is described by the fact that it detects the valve strokes of all cylinder groups with a same lift height in the highest stage and the first main map area is described in that it detects all other combinations of valve lifts all gas exchange valves of all cylinder groups, the second main map area is applied only at a high load from an average speed. In contrast to the known multi-cylinder internal combustion engine, the multi-cylinder internal combustion engine according to the invention is also operated in the low speed range and high load range with not open at full lift cylinder groups. Contrary to the assumption that a high load range would automatically necessitate the use of the largest valve strokes, it has been found that with the concept presented, the efficiency compared with conventional internal combustion engines can be improved once again.
Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert, hierin zeigt: The invention will be explained in more detail below with reference to the drawing, which shows:
Des Weiteren weist die Brennkraftmaschine
Entsprechend sind in
Im zweite Hauptkennfeldbereich
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 the documents listed by the applicant has been generated automatically and is included solely 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 PatentliteraturCited patent literature
- US 6332445 B1 [0002] US 6332445 B1 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102011053333A DE102011053333A1 (en) | 2011-09-07 | 2011-09-07 | Multicylinder internal combustion engine e.g. petrol engine has groups of cylinders comprising individual cylinders which are actuated variably by adjusting units of inlet and outlet valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011053333A DE102011053333A1 (en) | 2011-09-07 | 2011-09-07 | Multicylinder internal combustion engine e.g. petrol engine has groups of cylinders comprising individual cylinders which are actuated variably by adjusting units of inlet and outlet valves |
Publications (1)
Publication Number | Publication Date |
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DE102011053333A1 true DE102011053333A1 (en) | 2013-03-07 |
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DE102011053333A Withdrawn DE102011053333A1 (en) | 2011-09-07 | 2011-09-07 | Multicylinder internal combustion engine e.g. petrol engine has groups of cylinders comprising individual cylinders which are actuated variably by adjusting units of inlet and outlet valves |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014165384A1 (en) * | 2013-04-02 | 2014-10-09 | Eaton Corporation | Oil control valve system for valve actuation switching |
WO2017211574A1 (en) * | 2016-06-07 | 2017-12-14 | Volkswagen Aktiengesellschaft | Method for operating an internal combustion engine, and internal combustion engine |
DE102013220438B4 (en) | 2012-10-18 | 2021-08-05 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Engine assembly with variable valve lift in a cylinder bank and method of controlling the same |
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DE69304468T2 (en) * | 1992-07-16 | 1997-03-20 | Mitsubishi Motors Corp | Motor vehicle internal combustion engine |
US6332445B1 (en) | 1998-08-17 | 2001-12-25 | Dr. Ing. H.C.F. Porsche Ag | Method for operating and valve drive for a multicylinder internal combustion engine |
DE102005039663A1 (en) * | 2004-08-20 | 2006-03-09 | Hitachi, Ltd. | Cylinder shut-off control device of an internal combustion engine |
DE102007007831A1 (en) * | 2006-02-21 | 2007-09-06 | Toyota Jidosha Kabushiki Kaisha, Toyota | Valve system for a V-shaped engine |
DE102006033559A1 (en) * | 2006-07-20 | 2008-01-24 | Bayerische Motoren Werke Ag | Valve drive unit for an internal combustion engine comprises a first adjusting unit assigned to a gas exchange valve of a first cylinder and a second adjusting unit assigned to the gas exchange valve of a second cylinder |
DE102008029140A1 (en) * | 2007-07-04 | 2009-03-05 | Hitachi, Ltd. | Control device and control method for an internal combustion engine |
-
2011
- 2011-09-07 DE DE102011053333A patent/DE102011053333A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE69304468T2 (en) * | 1992-07-16 | 1997-03-20 | Mitsubishi Motors Corp | Motor vehicle internal combustion engine |
US6332445B1 (en) | 1998-08-17 | 2001-12-25 | Dr. Ing. H.C.F. Porsche Ag | Method for operating and valve drive for a multicylinder internal combustion engine |
DE102005039663A1 (en) * | 2004-08-20 | 2006-03-09 | Hitachi, Ltd. | Cylinder shut-off control device of an internal combustion engine |
DE102007007831A1 (en) * | 2006-02-21 | 2007-09-06 | Toyota Jidosha Kabushiki Kaisha, Toyota | Valve system for a V-shaped engine |
DE102006033559A1 (en) * | 2006-07-20 | 2008-01-24 | Bayerische Motoren Werke Ag | Valve drive unit for an internal combustion engine comprises a first adjusting unit assigned to a gas exchange valve of a first cylinder and a second adjusting unit assigned to the gas exchange valve of a second cylinder |
DE102008029140A1 (en) * | 2007-07-04 | 2009-03-05 | Hitachi, Ltd. | Control device and control method for an internal combustion engine |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013220438B4 (en) | 2012-10-18 | 2021-08-05 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Engine assembly with variable valve lift in a cylinder bank and method of controlling the same |
WO2014165384A1 (en) * | 2013-04-02 | 2014-10-09 | Eaton Corporation | Oil control valve system for valve actuation switching |
CN104100322A (en) * | 2013-04-02 | 2014-10-15 | 伊顿公司 | Oil control valve system for valve actuation switching |
US9540966B2 (en) | 2013-04-02 | 2017-01-10 | Eaton Corporation | Oil control valve system for valve actuation switching |
CN104100322B (en) * | 2013-04-02 | 2018-04-24 | 伊顿公司 | Oil pressure cntrol valve system for valve driving switching |
US10302024B2 (en) | 2013-04-02 | 2019-05-28 | Eaton Corporation | Oil control valve system for valve actuation switching |
WO2017211574A1 (en) * | 2016-06-07 | 2017-12-14 | Volkswagen Aktiengesellschaft | Method for operating an internal combustion engine, and internal combustion engine |
KR20190003990A (en) * | 2016-06-07 | 2019-01-10 | 폭스바겐 악티엔 게젤샤프트 | Method for operating internal combustion engine and internal combustion engine |
KR102080818B1 (en) | 2016-06-07 | 2020-02-25 | 폭스바겐 악티엔 게젤샤프트 | Methods and methods for operating an internal combustion engine |
US11118521B2 (en) | 2016-06-07 | 2021-09-14 | Volkswagen Aktiengesellschaft | Method for operating an internal combustion engine, and internal combustion engine |
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