DE3542629A1 - Internal combustion engine with variable combustion chamber volume and valve opening stroke - Google Patents
Internal combustion engine with variable combustion chamber volume and valve opening strokeInfo
- Publication number
- DE3542629A1 DE3542629A1 DE19853542629 DE3542629A DE3542629A1 DE 3542629 A1 DE3542629 A1 DE 3542629A1 DE 19853542629 DE19853542629 DE 19853542629 DE 3542629 A DE3542629 A DE 3542629A DE 3542629 A1 DE3542629 A1 DE 3542629A1
- Authority
- DE
- Germany
- Prior art keywords
- internal combustion
- combustion engine
- chamber
- opening stroke
- valves
- 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
Links
Classifications
-
- 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
- F02B75/047—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of variable crankshaft position
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Die Erfindung betrifft eine Brennkraftmaschine mit Gemischansaugung und Zeitpunkt-Fremdzündung, bei welcher der Brennraum eine vom Kolben begrenzte Kammer mit einem steuerbaren Volumen und eine Regelung des Öffnungshubes der Ventile aufweist, daß ein gesteuertes Kammerblockgehäuse mittels zumindest eines Gelenklagers, verstellbar in einem Winkelbereich, mit dem Kurbenwellen-Hauptlagergehäuse verbunden, die Verstellung der Lage des OT und UT des Kolbens in der Kammer der Brennkraftmaschine und des variablen Abstandes, von der Achslinie des Achsmittelpunktes der Nockenwelle zur Achslinie der Drehpunkte der Ventilhebel hin, zur Änderung des Öffnungshubes der Ventile bewirkt.The invention relates to an internal combustion engine Mixture intake and spark ignition at which time the combustion chamber is a chamber delimited by the piston with a controllable volume and regulation of the Opening stroke of the valves has a controlled Chamber block housing by means of at least one spherical bearing, adjustable in an angular range, with connected to the crankshaft main bearing housing, the adjustment the position of the OT and UT of the piston in the Chamber of the internal combustion engine and the variable distance, from the axis line of the axis center the camshaft to the axis line of the pivot points of the valve levers towards changing the opening stroke of the Valves.
Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine mit variablen Volumen des Brennraumes und des Öffnungshubes der Ventile eingangsumrissener Gattung zu schaffen, die im Betrieb bei erheblicher Kraftstoffeinsparung weitestgehende Schadstoffminderung bzw. Schadstoffreiheit der Abgase bewirkt.The invention has for its object an internal combustion engine with variable volume of the combustion chamber and the opening stroke of the valves To create genus in operation at considerable Fuel savings as far as possible pollution reduction or pollution-free effect of the exhaust gases.
Die Erfindung besteht darin, daß mittels eines gesteuerten Kammerblockgehäuses durch zumindest eines Gelenklager, mit der Achslinie des Achsenmittelpunktes des Gelenklagers parallel zur Achslinie des Achsenmittelpunktes der Kurbelwellenhauptlager, an ein Kurbelwellen-Hauptlagergehäuse (Hauptlagertragteil) angelenkt, zur Anpassung an die Betriebsbedingungen der Brennkraftmaschine in einem Winkelbereich verstellbar, daß Volumen der Kammer und im Verbund durch das Kammerblockgehäuse im Verstellbereich der Kreisbahnen der Ventilhebel, der Öffnungshub der Ventile veränderbar ist, wobei der Mittelpunkt der Kreisbahnen bei Schließstellung der Ventile und dem erforderlichen Ventilspiel, der Achsenmittelpunkt des Gelenklagers und der Drehpunkt des ersten Hebels und zweiten Hebels ist.The invention is that by means of a controlled Chamber block housing by at least one Spherical bearing, with the axis line of the axis center of the spherical bearing parallel to the axis line of the Axis center of the main crankshaft bearings a crankshaft main bearing housing (main bearing support part) articulated to adapt to the operating conditions of the Internal combustion engine adjustable in an angular range, that volume of the chamber and in the composite through the chamber block housing in the adjustment range of the circular paths of the valve levers, the opening stroke of the valves can be changed, the center of the circular orbits in the closed position the valves and the required valve clearance, the axis center of the spherical bearing and the fulcrum of the first lever and the second lever.
Die Erfindung ist nachfolgend an Ausführungsbeispielen beschrieben.The invention is based on exemplary embodiments described.
Die Zeichnung zeigt die Brennkraftmaschine schematisch in den Fig. 1 und 2.The drawing shows the internal combustion engine schematically in FIGS. 1 and 2.
An einer in Fig. 1 dargestellten mit Gemischansaugung und Zeitpunkt-Fremdzündung arbeitenden Otto-Brennkraftmaschine wird das Volumen des Brennraums a der Kammer b und der Öffnungshub c der Ventile d und e mittels eines gesteuerten Kammerblockgehäuses g, je nach Ladung der Brennkraftmaschine in den Leerlauf-, Teil- und Vollastbereichen, verändert. Das steuerbare Kammerblockgehäuse g ist mittels zumindest eines Gelenklagers h mit der Achslinie des Achsenmittelpunktes i des Achsbolzen k von h parallel zur Achslinie des Achsenmittelpunktes l der Kurbelwellenhauptlager m, und in einem Winkelbereich n verstellbar, an ein Kurbelwellen- Hauptlagergehäuse (Hauptlagertragteil) o angelenkt, wobei die Achslinie des Achsenmittelpunktes i des Achsbolzens k (je nach Konstruktion einer Maschine) eine Kreisbogenlinie j deren Mittelpunkt der Achsenmittelpunkt l ist, im rechten Winkel in den Bereichen nach 0° etwa zwischen 35° bis 135° oder zwischen 225° bis 325° schneidet. Die Verstellung des Kammerblockgehäuse g im Winkelbereich n bewirkt im Verbund mittels des Kammerofens p eine gesteuerte Verstellung, des variablen Abstandes qu von der Achslinie der Drehpunkte r des Auslaßventilhebels und des Einlaßventilhebels s 1 zur parallelen Achslinie des Achsenmittelspunktes t der Nockenwelle u, und in dem von der Nocke v und v 1 der Nockenwelle u beaufschlagten Bereich w, des Kreisbogen beschreibenden Teiles des Hebels s und s 1, der Kreisbahnen y und y 1, wodurch eine Änderung der Über- oder Untersetzung der Hebel s und s 1 und im Verbund die des Nockenhubes z bewirkt wird. Und dadurch der Öffnungshub c des Auslaßventiles d und des Einlaß- Ventiles e (je nach Steuerung des Kammerblockgehäuses g) der Ladung und der oberen Totpunktlage des Kolbens f in der Kammer b der Brennkraftmaschine entsprechend regelbar ist. Das der Mittelpunkt der Kreisbahn y und y 1 bei Schließstellung der Ventile d und e (Fig. 1 und 2) und dem erforderlichen Ventilspiel z 2, der Achsenmittelpunkt i des Achsbolzen k und Gelenklagers h und Drehpunkt i des Kammerblockgehäuses (erster Hebel) g und des Kurbelwellen-Hauptlagergehäuse oder Hauptlagertragteil (zweiten Hebels) o ist, wobei die Kreisbahnen y und y 1 in dieser Stellung, den Erhalt des erforderlichen Ventilspiels z 2 für die Ventile d und e über den gesamten Verstellbereich x bewirken. Die Nockenwelle u ist drehbar in die festen oder auch lösbaren Teile z 3 (nicht dargestellt) und z 4 des Kurbelwellen-Hauptlagergehäuse o gelagert. Der Antrieb der Nockenwelle u erfolgt durch die Kurbelwelle z 5 mit den üblichen Triebelementen, wogegen der Antrieb einer im Kammerkopf p drehbar gelagerten Nockenwelle mit bekannter Ventil-Steuerung (bei Maschinen ohne Regelung des Ventil-Öffnungshubes c) über einen Zwischentrieb mit drehbarer Lagerung auf einen verlängerten Achsbolzen k des Gelenklagers h erfolgt.Shown at a in Fig. 1: mixture and the time spark ignition operating spark-ignition internal combustion engine, the volume of the combustion chamber a of the chamber b and the opening stroke c of the valves d and e by means of a controlled chamber block housing g, depending on the charge of the engine in the idling , Partial and full load ranges, changed. The controllable chamber block housing g is articulated by means of at least one spherical bearing h with the axis line of the axis center i of the axle bolt k from h parallel to the axis line of the axis center l of the crankshaft main bearing m , and adjustable in an angular range n to a crankshaft main bearing housing (main bearing support part) o , whereby the axis line of the axis center point i of the axis bolt k (depending on the construction of a machine) is a circular arc line j whose center is the axis center point l , intersects at right angles in the areas after 0 ° approximately between 35 ° to 135 ° or between 225 ° to 325 °. The adjustment of the chamber block housing g in the angular range n causes a controlled adjustment in conjunction with the chamber furnace p , the variable distance qu from the axis line of the pivot points r of the exhaust valve lever and the intake valve lever s 1 to the parallel axis line of the axis center point t of the camshaft u , and in that of the cam v and v 1 of the camshaft u acted area w , the arc-describing part of the lever s and s 1 , the circular paths y and y 1 , whereby a change in the ratio or reduction of the levers s and s 1 and in combination that of the Cam stroke z is effected. And thereby the opening stroke c of the exhaust valve d and the intake valve e (depending on the control of the chamber block housing g ) of the charge and the top dead center position of the piston f in the chamber b of the internal combustion engine can be regulated accordingly. That the center of the circular path y and y 1 when the valves d and e are closed ( FIGS. 1 and 2) and the required valve clearance z 2 , the axis center i of the axle pin k and spherical bearing h and pivot point i of the chamber block housing (first lever) g and of the crankshaft main bearing housing or main bearing support part (second lever) is o , the circular paths y and y 1 in this position causing the required valve clearance z 2 for the valves d and e to be maintained over the entire adjustment range x . The camshaft u is rotatably supported in the fixed or detachable parts z 3 (not shown) and z 4 of the crankshaft main bearing housing o . The camshaft u is driven by the crankshaft z 5 with the usual drive elements, whereas the drive of a camshaft rotatably mounted in the chamber head p with known valve control (in machines without regulation of the valve opening stroke c ) via an intermediate drive with a rotatable bearing on one extended axle bolt k of the spherical bearing h .
Fig. 2 zeigt in beispielweiser Darstellung einen im Drehpunkt r gelagerten Kipphebel s mit einer unter der Kreisbahn y des Hebels s angeordneten Nockenwelle u. Fig. 2 shows an example of a rocker arm s mounted in the pivot point r with a camshaft u arranged under the circular path y of the lever s .
Die Verstellung des Kammerblockgehäuse g erfolgt mittels einer Stelleinrichtung z 6, welche vorteilhaft zwecks Nutzung der Seitenkraft (Gleitbahndruck) z 7 mit dem Gelenk z 8 an die Kammerblockseite g 1 und mit dem Gelenk z 9 an das Kurbelwellenhauptlagergehäuse o angelenkt ist. Der Antrieb der Stelleinrichtung z 6 erfolgt manuell oder elektromotorisch, mit oder ohne mechanischer, pneumatischer oder hydraulischer Unterstützung, wobei die Verstellung des Kammerblockgehäuses g durch eine von den Betriebparametern der Brennkraftmaschine gesteuerten, automatischen Steuerungseinrichtung y 1 im Verbund der Stelleinrichtung z 6 erfolgt. Die eine Verlagerung des OT (oberen Totpunktes) und UT (und unteren Totpunktes) mittels des Kolbens f in der Kammer b und eine Regelung des Öffnungshubes z 1 der Ventile d, e bewirkt, und eine Veränderung des Brennraum-Volumens der Kammer b derart ergibt, daß in allen Betriebsphasen der Brennkraftmaschine eine vorteilhafte Brennraumgröße und ein Verdichtungsdruck für eine geeignete Flammengeschwindigkeit und intensive Verbrennung zwecks Kraftstoff- Ersparnis und Erziehlung weitestgehender Schadstofffreiheit der Abgase bewirkt wird.The adjustment of the chamber block housing takes place g by means of a setting device, for 6 which advantageous for use of the side force (Gleitbahndruck) z 7 with the joint z 8 to the chamber block Page g 1 and z with the hinge 9 is articulated to the main bearing housing o. The actuating device z 6 is driven manually or by an electric motor, with or without mechanical, pneumatic or hydraulic support, the adjustment of the chamber block housing g being carried out by an automatic control device y 1 controlled by the operating parameters of the internal combustion engine in conjunction with the actuating device z 6 . Which causes a displacement of the TDC (top dead center) and UT (and bottom dead center) by means of the piston f in the chamber b and a regulation of the opening stroke z 1 of the valves d , e , and results in a change in the combustion chamber volume of the chamber b that in all operating phases of the internal combustion engine, an advantageous combustion chamber size and a compression pressure for a suitable flame speed and intensive combustion for the purpose of saving fuel and educating the greatest possible freedom from pollutants of the exhaust gases.
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853542629 DE3542629A1 (en) | 1985-12-03 | 1985-12-03 | Internal combustion engine with variable combustion chamber volume and valve opening stroke |
DE19863639850 DE3639850A1 (en) | 1985-12-03 | 1986-11-21 | Internal combustion engine with variable combustion chamber volume and valve opening lift |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853542629 DE3542629A1 (en) | 1985-12-03 | 1985-12-03 | Internal combustion engine with variable combustion chamber volume and valve opening stroke |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3542629A1 true DE3542629A1 (en) | 1987-06-04 |
DE3542629C2 DE3542629C2 (en) | 1989-02-02 |
Family
ID=6287427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19853542629 Granted DE3542629A1 (en) | 1985-12-03 | 1985-12-03 | Internal combustion engine with variable combustion chamber volume and valve opening stroke |
Country Status (1)
Country | Link |
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DE (1) | DE3542629A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992009799A1 (en) * | 1990-12-03 | 1992-06-11 | Saab Automobile Aktiebolag | Internal combustion engine with variable compression, provided with reinforcements of the crankcase section in the region of the main bearings |
DE4120822A1 (en) * | 1991-06-24 | 1993-01-07 | Martin Schmidt | Engine crankshaft misalignment control support - has hydraulic thruster coupled by levers to cylinder block and crankcase |
US5562069A (en) * | 1992-05-11 | 1996-10-08 | Saab Automobile Aktiebolag | Method and device for varying the compression of an internal combustion engine |
US5572959A (en) * | 1992-06-30 | 1996-11-12 | Fanja Ltd. | Method for controlling the working cycle in an internal combustion engine and an engine for performing said method |
WO2000055483A1 (en) * | 1999-03-18 | 2000-09-21 | Saab Automobile Ab | Arrangement for preventing bearing-related noise in internal combustion engines |
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. |
WO2008035200A2 (en) * | 2006-09-22 | 2008-03-27 | Toyota Jidosha Kabushiki Kaisha | Spark ignition type internal combustion engine |
DE102006015887B4 (en) * | 2006-04-05 | 2013-06-06 | Bayerische Motoren Werke Aktiengesellschaft | Reciprocating internal combustion engine |
RU2626613C2 (en) * | 2015-09-02 | 2017-07-31 | Игорь Владимирович Долгих | Ice with variable compression ratio |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4210029C2 (en) * | 1992-03-27 | 1998-11-05 | Willi Weis | Internal combustion engine with variable compression space |
DE4211589A1 (en) * | 1992-04-07 | 1993-10-14 | Audi Ag | IC engine with variable compression ratio - has conventional head and sliding cylinder within block displaced by hydraulically-operated sliders depending on load and rpm |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3633552A (en) * | 1969-09-30 | 1972-01-11 | Ernest G Huber | Internal combustion engine including maximum firing pressure-limiting means |
DE3111366A1 (en) * | 1981-03-23 | 1983-01-20 | Willy 5093 Burscheid Bayer | In-line throttle engine with spark ignition and variable compression |
-
1985
- 1985-12-03 DE DE19853542629 patent/DE3542629A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3633552A (en) * | 1969-09-30 | 1972-01-11 | Ernest G Huber | Internal combustion engine including maximum firing pressure-limiting means |
DE3111366A1 (en) * | 1981-03-23 | 1983-01-20 | Willy 5093 Burscheid Bayer | In-line throttle engine with spark ignition and variable compression |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992009799A1 (en) * | 1990-12-03 | 1992-06-11 | Saab Automobile Aktiebolag | Internal combustion engine with variable compression, provided with reinforcements of the crankcase section in the region of the main bearings |
WO1992009798A1 (en) * | 1990-12-03 | 1992-06-11 | Saab Automobile Aktiebolag | Combustion engine with variable compression ratio |
DE4120822A1 (en) * | 1991-06-24 | 1993-01-07 | Martin Schmidt | Engine crankshaft misalignment control support - has hydraulic thruster coupled by levers to cylinder block and crankcase |
US5562069A (en) * | 1992-05-11 | 1996-10-08 | Saab Automobile Aktiebolag | Method and device for varying the compression of an internal combustion engine |
US5572959A (en) * | 1992-06-30 | 1996-11-12 | Fanja Ltd. | Method for controlling the working cycle in an internal combustion engine and an engine for performing said method |
WO2000055483A1 (en) * | 1999-03-18 | 2000-09-21 | Saab Automobile Ab | Arrangement for preventing bearing-related noise in internal combustion engines |
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. |
DE102006015887B4 (en) * | 2006-04-05 | 2013-06-06 | Bayerische Motoren Werke Aktiengesellschaft | Reciprocating internal combustion engine |
WO2008035200A2 (en) * | 2006-09-22 | 2008-03-27 | Toyota Jidosha Kabushiki Kaisha | Spark ignition type internal combustion engine |
WO2008035200A3 (en) * | 2006-09-22 | 2008-05-29 | Toyota Motor Co Ltd | Spark ignition type internal combustion engine |
US7997241B2 (en) | 2006-09-22 | 2011-08-16 | Toyota Jidosha Kabushiki Kaisha | Spark ignition type internal combustion engine |
RU2626613C2 (en) * | 2015-09-02 | 2017-07-31 | Игорь Владимирович Долгих | Ice with variable compression ratio |
Also Published As
Publication number | Publication date |
---|---|
DE3542629C2 (en) | 1989-02-02 |
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