EP0837226A1 - Valve driven internal combustion engine with compression variation arrangement - Google Patents

Valve driven internal combustion engine with compression variation arrangement Download PDF

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Publication number
EP0837226A1
EP0837226A1 EP97116224A EP97116224A EP0837226A1 EP 0837226 A1 EP0837226 A1 EP 0837226A1 EP 97116224 A EP97116224 A EP 97116224A EP 97116224 A EP97116224 A EP 97116224A EP 0837226 A1 EP0837226 A1 EP 0837226A1
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EP
European Patent Office
Prior art keywords
sleeve
combustion engine
internal combustion
valve
actuator
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Granted
Application number
EP97116224A
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German (de)
French (fr)
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EP0837226B1 (en
Inventor
Gerd MÜLLER-ALANDER
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP0837226A1 publication Critical patent/EP0837226A1/en
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Anticipated expiration legal-status Critical
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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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
    • F01L3/085—Valve cages
    • 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
    • F02D15/04—Varying compression ratio by alteration of volume of compression space without changing piston stroke

Abstract

The internal combustion engine has a setting device (2) comprising a controlled sleeve (8) able to move in a cylinder head (7). It also has a through-hole (10) in the sleeve jacket (9) via which a sector (11') of the gas exchange channel (11) in the cylinder head is connected to another sector (11") formed by the shell on the combustion chamber side. The end of the channel is controlled by a lift valve (13) which is in drive connection with a lift operating device in the sleeve acting as an actuator (14). The sleeve can be moved independently of the actuator.

Description

Die Erfindung bezieht sich auf eine ventilgesteuerte Brennkraftmaschine der im Oberbegriff des Patentanspruches 1 beschriebenen Bauart.The invention relates to a valve-controlled internal combustion engine in the Preamble of claim 1 described type.

Eine derartige Brennkraftmaschine ist aus der EP 0 330 638 A bekannt. Die Verstelleinrichtung zur verdichtungsänderung be dieser ventilgesteuerten Brennkraftmaschine umfaßt eine in einem Zylinderkopf schiebebeweglich geführt gesteuerte Hülse mit einer im Hülsenmantel angeordneten Durchbrechung, über die ein im Zylinderkopf verlaufender Kanalabschnitt eines Gaswechselkanals mit einem von der Hülse gebildeten brennraumseitigen Kanalabschnitt in Verbindung steht, wobei eine von der Hülse begrenzte brennraumseitige Kanalmündung mittels eines Hubventils gesteuert ist.Such an internal combustion engine is known from EP 0 330 638 A. The adjustment device to change the compression of this valve-controlled internal combustion engine comprises a controlled in a cylinder head guided sliding Sleeve with an opening arranged in the sleeve jacket over which a channel section of a gas exchange channel running in the cylinder head a duct section formed by the sleeve on the combustion chamber side stands, with a channel opening delimited by the sleeve on the combustion chamber side a lift valve is controlled.

Diese bekannte Verstelleinrichtung bildet im Prinzip be durch das Hubventil geschlossener Hülse einen Kolben, mittels dessen variabler Position ein Verdichtungsvolumen in einem Zylinder betriebspunktabhängig veränderbar ist. Nachteilig be dieser bekannten Verstelleinrichtung ist, daß das Hubventil sowie die Hülse jeweils über zugeordnete Kurvenscheiben auf einer gemeinsamen Steuewelle betätigt sind, wobei die jeweiligen Kurvenscheiben auf der gemeinsamen Sternerwelle in einer festen Drehwinkelzuordnung drehfest angeordnet sind. Mit dieser derart gekoppelten Steuerungszuordnung von Hülsen-Bewegung und Hubventil-Bewegung kann keine der Frnnktionen einer betriebspunktangepaßten Verdichtung sowie einem betriebspunktangepaßten Ventilöffnungsquerschnitt gesondert realisiert werden.This known adjusting device forms in principle be closed by the globe valve Sleeve a piston, by means of its variable position a compression volume can be changed in a cylinder depending on the operating point. Disadvantageous be this known adjusting device is that the globe valve and the sleeve each via assigned cam disks on a common control shaft are actuated, the respective cams on the common star shaft are non-rotatably arranged in a fixed rotation angle assignment. With this thus coupled control assignment of sleeve movement and stroke valve movement cannot do any of the functions of compression adjusted to the operating point and a valve opening cross-section adapted to the operating point will be realized.

Aus der DE 38 01 102 A ist eine weitere Verstelleinrichtung zur Verdichtungsänderung bei einer Brennkraftmaschine bekannt mit einer im Zylinderkopf as Nebenkolben angeordneten Hülse mit einem Gaswechselventil, bei der zwar der Nebenkolben zur Verdichtrnngsänderung unabhängig von der Steuerung des Gaswechselventils verstellbar ist. Jedoch ist hierbei nachteilig ein mit dem Nebenkolben bzw. mit der Hülse in einer Ausnehmung des Zylinderkopfes mitbewegter Kanalabschnitt, was eine aufwendige Zylinderkopfgestaltung erfordert.DE 38 01 102 A describes a further adjustment device for changing the compression known in an internal combustion engine with a secondary piston in the cylinder head arranged sleeve with a gas exchange valve, in which the secondary piston to change the compression independently of the control of the gas exchange valve is adjustable. However, this is disadvantageous with the secondary piston or moved with the sleeve in a recess of the cylinder head Channel section, which requires a complex cylinder head design.

Der Erfindung liegt die Aufgabe zugrunde, be einer gattungsgemäßen Brennkraftmaschine die Verstelleinrichtung zur Verdichtungsänderung derart zu gestalten, daß beide Steuerungseinricntungen entkoppelt sind bei einfachem Aufbau des Zylinderkopfes.The invention has for its object to be a generic internal combustion engine to design the adjustment device for changing the compression in such a way that both control devices are decoupled with a simple structure of the Cylinder head.

Diese Aufgabe ist mit dem Patentanspruch 1 gelöst und bar in der Weise, daß das Hubventil mit einer in der Hülse angeordneten, as Aktuator gestalteten Hub-Betätigungseinrichtung in Antriebsverbindung steht und daß die Hülse der Verstelleinrichtung zur Verdichtungsänderung unabnängig von dem Aktuator gesondert schiebebeweglich steuerbar ist.This object is achieved with claim 1 and bar in such a way that the lift valve with a lift actuating device arranged in the sleeve and designed as an actuator is in drive connection and that the sleeve of the adjusting device to change the compression independently of the actuator is controllable by sliding.

Der Vorteil de, Erfindung ist darin zu sehen, daß mit einem in der Hülse angeordneten Aktuator Zur Hubbetätigung des Ventis z.B. über einen variablen Hub ein dem jeweiligen Betriebspunkt angepaßter Ventilöffnungsquerschnitt erzielt ist und bar unabhängig von de, Steuerung der Hülse. Mit dem durch einen erfindungsgemäß angeordneten Aktuator gesonderten Ventiltrieb ergibt sich in weiterer vorteilhafter Weise, daß die beiden Steuerungen nicht gegeneinander wirken und somit das bekannte Prinzip eines Verdrängerkolbens im Verdichtungsraum des Zylinders einer Brennkraftmaschine jederzeit erhalten ist. The advantage of de, invention is to be seen in that arranged in the sleeve Actuator for lifting the valve e.g. via a variable stroke valve opening cross section adapted to the respective operating point is achieved and bar regardless of the control of the sleeve. With the one according to the invention arranged actuator separate valve train results in a further advantageous Way that the two controls do not work against each other and thus the known principle of a displacement piston in the compression chamber of the Cylinder of an internal combustion engine is preserved at all times.

In Ausgestaltung der Erfindung ist en durch seine kompakte Bauweise elektromagnetischer Aktuator bevoaugt, es ist aber auch en hydraulischer oder en pneumatischer Aktuator möglich.In an embodiment of the invention, its compact design makes it more electromagnetic Actuator equipped, but it is also hydraulic or hydraulic pneumatic actuator possible.

Zur Erzielung eines mechanisch einfachen Aufbaus des Zylinderkopfes wird in weiterer Ausgestaltung vorgeschlagen, daß die Hülse über eine betriebspunktabhängig gesteuerte Kurvenscheibe Zur Verdichtungsänderung gesondert im Zylinderkopf verschiebbar ist. Mit dieser vorgeschlagenen Ausgestaltung der Steuerung der Hülse sind die auf die durch das Ventil geschlossene Hülse wirkenden Brennraumdrücke sicher beherrschbar.To achieve a mechanically simple construction of the cylinder head, in Another embodiment proposed that the sleeve depending on an operating point Controlled cam disc For changing the compression separately in the cylinder head is movable. With this proposed design of the control the sleeve are the combustion chamber pressures acting on the sleeve closed by the valve manageable.

Die Erfindung ist anhand eines bevorzugten, in der Zeichnung dargestellten Beispies beschrieben.The invention is based on a preferred example shown in the drawing described.

Eine lediglich abschnittsweise dargestellte, ventilgesteuerte Brennkraftmaschine 1 ist mit einer Verstelleinrichtung 2 zur Verdichtungsänderung im Brennraum 3 zwischen dem Kolben 4 im Zylinder 5 der Brennkraftmaschine 1 und einer Brennraumkalotte 6 in einem Zylinderkopf 7 ausgerüstet. Die Verstelleinrichtung 2 umfaßt eine im Zylinderkopf 7 schiebebeweglich geführt gesteuerte Hülse 8 mit einer im Hülsenmantel 9 angeordneten Durchbrechung 10, über die ein im Zylinderkopf 7 verlaufender Kanalabschnitt 11' eines Gaswechselkanals 11 mit einem von der Hülse 8 gebildeten brennraumseitigen Kanalabschnitt 11'' in Verbindung steht. Die von der Hülse 8 brennraumseitig begrenzte Kanalmündung 12 ist mittels eines Hubventils 13 gesteuert.A valve-controlled internal combustion engine 1 shown only in sections is with an adjusting device 2 for changing the compression in the combustion chamber 3 between the piston 4 in the cylinder 5 of the internal combustion engine 1 and a combustion chamber calotte 6 equipped in a cylinder head 7. The adjusting device 2 comprises a sleeve 8 guided with sliding movement in the cylinder head 7 with a in the sleeve jacket 9 arranged opening 10 through which a in the cylinder head 7 extending channel section 11 'of a gas exchange channel 11 with one of the Sleeve 8 formed combustion chamber-side channel section 11 '' is connected. The by the sleeve 8 limited combustion chamber side channel opening 12 by means of a Lift valve 13 controlled.

Zur Erzielung unabhängiger Steuerungen für das Hubventil 13 einerseits und für die Hülse 8 der Verstelleinrichtung 2 andererseits wird erfindungsgemäß vorgescnlagen, daß das Hubventil 13 mit einer in der Hülse 8 angeordneten, as Aktuator 14 gestalteten Hub-Betätigungseinrichtung in Antriebsverbindung steht und daß die Hülse 8 der Verstelleinrichtung 2 zur Verdichtungsänderung unabnängig von dem Aktuaktor 14 gesondert schiebebeweglich steuerbar ist. To achieve independent controls for the lift valve 13 on the one hand and for the sleeve 8 of the adjusting device 2, on the other hand, is proposed according to the invention, that the lift valve 13 with an arranged in the sleeve 8, as an actuator 14 designed stroke actuator is in drive connection and that the sleeve 8 of the adjusting device 2 for changing the compression independently of the actuator 14 can be controlled separately by sliding.

Vorzugsweise ist die Ventilhub-Betätigungseinrichtung ein elektromagnetischer Aktuator 14. Ein hydraulischer oder en pneumatischer Aktuator ist ebenfalls denkbar.The valve lift actuating device is preferably an electromagnetic one Actuator 14. A hydraulic or pneumatic actuator is also conceivable.

Zur Erzielung einer betriebssicheren und im Aufbau einfachen Verstelleinrichtung 2 ist die Hülse 8 über eine vorzugsweise betriebspunktabhängig gesteuerte, as Exzenter 15 gestaltete Kurvenscheibe zur Verdichtungsänderung gesondert im Zylinderkopf verscniebbar.To achieve a reliable and easy to set up adjustment device 2 is the sleeve 8 via a preferably eccentric controlled as a function of the operating point 15 cam disc designed to change the compression separately in the cylinder head can be pinned.

Mit den erfindungsgemäß entkoppelten Steuerungen für das Hubventil 13 einersets und für die Hülse 8 der Verstelleinrichtung 2 zur Verdichtungsänderung andererseits kann jede der Einrichtungen optimal auf den jeweiligen Betriebspunkt der Brennkraftmaschine 1 angepaßt werden.With the controls for the lift valve 13 decoupled according to the invention and on the other hand for the sleeve 8 of the adjusting device 2 for changing the compression can each of the facilities optimally to the respective operating point of the Internal combustion engine 1 can be adjusted.

Eine wirksame Verdichtungsänderung ist insbesondere dadurch erreicht, daß mehrere gleichartige Hubventile 13 je Brennraum 3 mit jeweils einer Verstelleinrichtung 2 kombiniert sind. Weiter kann die Verdichtungsänderung dadurch gesteigert sein, daß ein- und auslaßseitige Hubventile 13 jewels mit einer Verstelleinrichtung 2 kombiniert sind.An effective compression change is achieved in particular that several Similar lift valves 13 per combustion chamber 3, each with an adjusting device 2 are combined. Furthermore, the change in compaction can be increased by that inlet and outlet-side lift valves 13 each with an adjusting device 2 are combined.

Femer kann der jeweilige Aktuator 14 as Betätigungseinrichtung mit variablem Ventilhub gestaltet sein, wodurch ansaugseitig betriebspunktabhängig angepaßte Ventilöffnungsquerschnitte zur vorteilhaften Einströmsteuerung möglich sind.The respective actuator 14 can also be used as an actuating device with a variable Valve stroke can be designed, whereby adapted on the intake side depending on the operating point Valve opening cross sections for advantageous inflow control are possible.

Claims (6)

Ventilgesteuerte Brennkraftmaschine mit einer Verstelleinrichtung zur Verdichtungsänderung, wobei die Verstelleinrichtung (2) eine in einem Zylinderkopf (7) schiebebeweglich geführt gesteuerte Hülse (8) umfaßt mit einer im Hülsenmantel (9) angeordneten Durchbrechung (10), über die ein im Zylinderkopf (7) verlaufender Kanalabschnitt (11') eines Gaswechselkanals (11) mit einem von de, Hülse (8) gebildeten brennraumseitigen Kanalabschnitt (11'') in Verbindung steht, wobei eine von de, Hülse (8) begrenzte brennraumseitige Kanalmündung (12) mittels eines Hubventils (13) gesteuert ist
dadurch gekennzeichnet, daß das Hubventil (13) mit einer in de, Hülse (8) angeordneten, as Aktuator (14) gestalteten Hub-Betätigungseinrichtung in Antriebsverbindung steht, und daß die Hülse (8) der Verstelleinrichtung (2) zur Verdichtungsänderung unabhängig von dem Aktuator (14) gesondert schiebebeweglich steuerbar ist. Valve-controlled internal combustion engine with an adjustment device for changing the compression, The adjusting device (2) comprises a sleeve (8) which is guided in a sliding manner in a cylinder head (7) and has an opening (10) arranged in the sleeve jacket (9), via which a channel section (11 ') of a gas exchange channel (11) running in the cylinder head (7) is connected to a channel section (11'') formed by the sleeve (8), wherein a channel opening (12) delimited by the sleeve (8) is controlled by means of a lift valve (13)
characterized, that the stroke valve (13) is in drive connection with a sleeve (8) arranged as an actuator (14) designed stroke actuating device, and that the sleeve (8) of the adjusting device (2) for changing the compression independently of the actuator (14) can be controlled separately by sliding. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß ein elektromagnetischer oder ein hydraulischer oder ein pneumatischer Aktuator (14) vorgesehen ist. Internal combustion engine according to claim 1, characterized in that a electromagnetic or a hydraulic or a pneumatic actuator (14) is provided. Brennkraftmaschine nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Hülse (8) über eine betriebspunktabhängig gesteuerte Kurvenscheibe (Exzenter 15) zur Verdichtungsänderung gesondert im Zylinderkopf (7) verschiebbar ist.Internal combustion engine according to claim 1 and 2, characterized in that the sleeve (8) via a cam disc controlled depending on the operating point (Eccentric 15) to change the compression separately in the cylinder head (7) is. Brennkraftmaschine nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß mehrere gleichartige Hubventile (13) je Brennraum (3) mit jewels einer Verstelleinrichtung (2) kombiniert sind.Internal combustion engine according to claims 1 to 3, characterized in that several similar lift valves (13) per combustion chamber (3) with jewels an adjusting device (2) are combined. Brennkraftmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein- und auslaßseitige Hubventile (13) jewels mit einer Verstelleinrichtung (2) kombiniert sind.Internal combustion engine according to one of claims 1 to 4, characterized in that that inlet and outlet-side lift valves (13) each with an adjusting device (2) are combined. Brennkraftmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der jeweilige Aktuator (14) as Betätigungseinrichtung mit variablem Ventilhub gestaltet ist.Internal combustion engine according to one of claims 1 to 5, characterized in that that the respective actuator (14) as actuating device with variable valve lift is designed.
EP97116224A 1996-10-15 1997-09-18 Valve driven internal combustion engine with compression variation arrangement Expired - Lifetime EP0837226B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19642469 1996-10-15
DE19642469A DE19642469C1 (en) 1996-10-15 1996-10-15 Valve-controlled internal combustion engine with an adjustment device for changing the compression

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EP0837226A1 true EP0837226A1 (en) 1998-04-22
EP0837226B1 EP0837226B1 (en) 2002-02-06

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EP97116224A Expired - Lifetime EP0837226B1 (en) 1996-10-15 1997-09-18 Valve driven internal combustion engine with compression variation arrangement

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DE (2) DE19642469C1 (en)
ES (1) ES2170313T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10128938A1 (en) * 2001-06-18 2003-01-02 Hjs Fahrzeugtechnik Gmbh & Co Particle filter operating by means of soot combustion and used in diesel engines comprises filtering surface made from sintered metal between crude gas side and pure gas side
EP2336521A1 (en) * 2009-12-15 2011-06-22 Wärtsilä Schweiz AG A cylinder arrangement for an internal combustion engine
DE102013216182A1 (en) 2013-08-14 2015-02-19 Schaeffler Technologies Gmbh & Co. Kg Adjustment device, in particular for internal combustion engines
DE102011008128B4 (en) * 2011-01-07 2017-10-26 Suheyla Lemouré Reciprocating internal combustion engine with variable compression ratio

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106685A1 (en) * 2001-02-14 2002-08-29 Karl-Otto Noelle Increasing power of internal combustion engines with stroke volume enhancement, involves changing cylinder bore diameters or replacing cylinder sleeves for production crankcase, etc.
DE10227769A1 (en) * 2002-06-21 2004-01-08 Daimlerchrysler Ag Compression change arrangement for combustion engine, has control element that can be moved independently of gas charging valve position and that is coaxially arranged to gas charging valve forming valve seat
DE10311229B4 (en) * 2003-03-14 2005-03-31 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Internal combustion engine with variable compression ratio

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165544A (en) * 1982-03-25 1983-09-30 Hitachi Zosen Corp Internal-combustion engine with variable compression ratio device
DE3801102A1 (en) 1988-01-16 1989-07-27 Erich Schmid Device for a reciprocating piston engine with variable combustion chamber
EP0330638A1 (en) 1988-02-23 1989-08-30 Jorma Pohjola Valve gear for internal combustion engine
EP0676533A1 (en) * 1994-04-09 1995-10-11 Adam Opel Ag Inlet passage system for an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165544A (en) * 1982-03-25 1983-09-30 Hitachi Zosen Corp Internal-combustion engine with variable compression ratio device
DE3801102A1 (en) 1988-01-16 1989-07-27 Erich Schmid Device for a reciprocating piston engine with variable combustion chamber
EP0330638A1 (en) 1988-02-23 1989-08-30 Jorma Pohjola Valve gear for internal combustion engine
EP0676533A1 (en) * 1994-04-09 1995-10-11 Adam Opel Ag Inlet passage system for an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 2 (M - 266) 7 January 1984 (1984-01-07) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10128938A1 (en) * 2001-06-18 2003-01-02 Hjs Fahrzeugtechnik Gmbh & Co Particle filter operating by means of soot combustion and used in diesel engines comprises filtering surface made from sintered metal between crude gas side and pure gas side
EP2336521A1 (en) * 2009-12-15 2011-06-22 Wärtsilä Schweiz AG A cylinder arrangement for an internal combustion engine
DE102011008128B4 (en) * 2011-01-07 2017-10-26 Suheyla Lemouré Reciprocating internal combustion engine with variable compression ratio
DE102013216182A1 (en) 2013-08-14 2015-02-19 Schaeffler Technologies Gmbh & Co. Kg Adjustment device, in particular for internal combustion engines
WO2015021971A1 (en) 2013-08-14 2015-02-19 Schaeffler Technologies Gmbh & Co. Kg Adjustment apparatus, in particular for combustion engines

Also Published As

Publication number Publication date
DE59706288D1 (en) 2002-03-21
ES2170313T3 (en) 2002-08-01
DE19642469C1 (en) 1998-05-07
EP0837226B1 (en) 2002-02-06

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