DE10359087B3 - Variable valve control for gas or diesel engine using delay device for delayed closure of engine entry or exit valves - Google Patents
Variable valve control for gas or diesel engine using delay device for delayed closure of engine entry or exit valves Download PDFInfo
- Publication number
- DE10359087B3 DE10359087B3 DE10359087A DE10359087A DE10359087B3 DE 10359087 B3 DE10359087 B3 DE 10359087B3 DE 10359087 A DE10359087 A DE 10359087A DE 10359087 A DE10359087 A DE 10359087A DE 10359087 B3 DE10359087 B3 DE 10359087B3
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- Prior art keywords
- valve
- valves
- rocker arm
- lines
- control device
- 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.)
- Expired - Fee Related
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- 230000003111 delayed effect Effects 0.000 title claims abstract description 7
- 239000010687 lubricating oil Substances 0.000 claims description 17
- 238000010079 rubber tapping Methods 0.000 claims description 16
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
-
- 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
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/08—Modifying distribution valve timing for charging purposes
- F02B29/083—Cyclically operated valves disposed upstream of the cylinder intake valve, controlled by external means
-
- 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
- F02D13/0261—Controlling the valve overlap
-
- 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
- F02D13/0269—Controlling the valves to perform a Miller-Atkinson cycle
-
- 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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/146—Push-rods
-
- 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
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
- F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
-
- 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
- F01L1/3442—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 using hydraulic chambers with variable volume to transmit the rotating force
-
- 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
- F01L2013/0089—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 with means for delaying valve closing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine variable Ventilsteuerung nach dem Oberbegriff des Patentanspruches 1.The The invention relates to a variable valve timing after Preamble of claim 1.
Es ist bekannt, bei der NOx Minderung für Diesel- und Gasmotoren das bekannte Verfahren nach Miller zur Abkühlung der Verbrennungstemperatur einzusetzen. Hierbei wird ein Kühleffekt durch ein sehr frühes Schließen der Einlaßventile erreicht. Eine anschließende Expansion der Gasmenge im Brennraum senkt die Frischgastemperatur und der Füllungsverlust des aufgeladenen Motors wird durch einen Turbolader mit einem erhöhten Ladedruck ausgeglichen.It is known for NOx reduction for diesel and gas engines the Known Miller method for cooling the combustion temperature use. This is a cooling effect through a very early one Shut down the intake valves reached. A subsequent one Expansion of the amount of gas in the combustion chamber lowers the fresh gas temperature and the filling loss The supercharged engine is powered by a turbocharger with an increased boost pressure balanced.
Für transiente Motorzustände, bei denen der aufgeladene Motor in kurzer Zeit eine höhere Leistung/Drehmoment abgeben muß, ist das Ausschalten des Miller Effekts sehr hilfreich. Dies kann auf der einen Seite durch ein Verschieben des Einlaßnockenprofils durch Verdrehung der Nockenwelle gegenüber der Kurbelwelle oder durch eine Verschiebung des Nockens auf der Nockenwelle oder durch eine Veränderung der Anlenkung Nocken/Ventil erreicht werden. In allen Fällen wird durch die Verschiebung des Nockenprofils eine Ventilüberschneidung und damit einen Spülung der Zylinder verringert.For transient Engine conditions where the supercharged engine in a short time a higher power / torque must give up Turning off the Miller effect is very helpful. This can on the one hand by moving the intake cam profile by rotation of the camshaft relative to the crankshaft or through a shift of the cam on the camshaft or by a change the articulation cam / valve can be achieved. In all cases will by the displacement of the cam profile a valve overlap and with it a flush the cylinder is reduced.
Nach
der
Hierbei ist vorgesehen, daß das Luftsteuerventil vor dem zugeordneten Einlaßventil schließbar ist und bei geöffnetem Einlaßventil unverdichtete Ladung in den Verbrennungsraum gesaugt wird, sobald der Druck im Verbrennungsraum den Außendruck unterschreitet.in this connection is provided that the Air control valve is closed in front of the associated inlet valve and when open intake valve uncompressed cargo is sucked into the combustion chamber as soon as the Pressure in the combustion chamber falls below the external pressure.
Auch
nach der
Aufgabe der Erfindung ist es, eine variable Ventilsteuerung für Einlaß- oder Auslaßventile einer Brennkraftmaschine zu schaffen, um eine Verringerung von Rußemissionen und eine Verbesserung einer Lastaufnahme eines Gas- oder Dieselmotors zu gewährleisten.task The invention is a variable valve timing for intake or exhaust valves an internal combustion engine to provide a reduction of soot emissions and an improvement of a load absorption of a gas or diesel engine to ensure.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.These The object is achieved by the Characteristics of claim 1 solved.
Hierdurch wird z. B. vermieden, daß ein frühes Schließen des Auslaßventils zu einem schlechten Spülen des Brennraumes führt und die Brenngase nach Abschluß der Verbrennung nicht vollständig ausgeschoben werden. Es hat sich gezeigt, daß ein verzögertes Schließen eine bessere Abgasrückführung mit einem höheren Anteil von Restgasen ermöglicht und damit die NOx-Emmission senkbar ist.hereby is z. B. avoided that a early Shut down the exhaust valve to a bad rinse of the combustion chamber leads and the fuel gases after completion of the Combustion not fully ejected become. It has been shown that a delayed closing a better exhaust gas recirculation with a higher one Share of residual gases allows and thus the NOx emission can be lowered.
Weitere vorteilhafte Ausbildungen sind durch die Merkmale der Unteransprüche gekennzeichnet.Further advantageous embodiments are characterized by the features of the subclaims.
Die mit der Erfindung hauptsächlich erzielten Vorteile bestehen darin, daß durch eine Einrichtung der Schließvorgang der Gaswechselventile entsprechend der Steuerung einer zuschaltbaren Ventileineinheit, wie beispielsweise durch eine Drossel oder durch ein getaktetes Magnet-Absperrventil, verzögerbar ist. Die Verzögerung des Schließvorgangs wird dadurch erreicht, daß ein Ventilkipphebel mit einer Verzögerungseinrichtung einerseits über eine Ventilbetätigungsbrücke und andererseits unmittelbar mit einer spielausgleichenden Teleskopeinrichtung an der Stoßstange verbunden ist und die Verzögerungseinrichtung zwei Flügelkammern im Kipphebel sowie einen darin schwenkbar gelagerten Flügel der mit einer ortsfesten Kipphebellagerung verbunden ist und die Schmieröl aufnehmenden Flügelkammern in der Einrichtung über ölführende Verbindungsleitungen mit Ventileinheiten beim Öffnungs- und Schließvorgang der Gaswechselventile verbunden sind.The with the invention mainly achieved advantages are that by a device of the closing the gas exchange valves according to the control of a switchable Valve unit, such as by a throttle or through a clocked solenoid shut-off valve, is delayable. The delay of Closing process is achieved by a Valve rocker arm with a deceleration device on the one hand over a valve actuation bridge and on the other hand directly with a play compensating telescope device at the bumper is connected and the delay device two wing chambers in the rocker arm and a pivotally mounted therein the wing is connected to a fixed rocker arm bearing and receiving the lubricating oil vane chambers in the device via oil-carrying connection lines with valve units at the opening and closing the gas exchange valves are connected.
Zur Erzielung des verzögerten Schließvorgangs der Gaswechselventile sind zwischen endseitigen Flügeln am Kipphebellagerbolzen und der entsprechenden Ausnehmungen am Kipphebel die Flügelkammern angeordnet, welche über eine Bohrung im Flügel mit einer vertikalen Bohrung im Kipphebelbock verbunden ist, in welcher endseitig eine Anstichbohrung einmündet, die über Leitungen mit den Ventileinheiten verbindbar sind. Insbesondere ist vorgesehen, daß die Anstichbohrung in Abhängigkeit von der Ventilstellung der Gaswechselventile über eine Leitung entweder mit der einen Ventileinheit, bestehend aus einem Durchgangs- und Absperrventil, oder über eine weitere Leitung mit der weiteren Ventileinheit, bestehend aus einem Rückschlagventil und einer Drossel oder ein getaktetes Magnet-Absperrventil zu einem Schmierölanschluß verbindbar ist. Somit kann über die Ventileinheiten mit den entsprechend ausgestalteten Ventilen eine Steuerung der Gaswechselventile in Abhängigkeit von der Schließstellung und/oder der Öffnungsstellung erzielt werden.to Achieving the delayed closing process the gas exchange valves are between end-side wings on Rocker arm pin and the corresponding recesses on the rocker arm the wing chambers arranged over which a hole in the wing is connected to a vertical bore in the rocker arm, in which ends a tapping hole, which via lines with the valve units are connectable. In particular, it is provided that the tapping hole in dependence of the valve position of the gas exchange valves via a line with either a valve unit consisting of a passage and shut-off valve, or via a another line with the other valve unit, consisting of a check valve and a throttle or a clocked solenoid shut-off valve connectable to a lubricating oil port is. Thus, over the valve units with the appropriately designed valves a control of the gas exchange valves as a function of the closed position and / or the open position be achieved.
So ist bei einem Schließvorgang der Gaswechselventile, das in den Flügelkammern eingeschlossene Schmieröl über die vertikale Bohrung im Kipphebelbock und die Anstichbohrung im Zylinderkopf sowie über eine Leitung bei geschlossenem Ventil in der Ventileinheit der Drossel oder einem getaktetem Magnet-Absperrventil in der weiteren Ventileinheit zuführbar, wobei die Einlaßventile eine Verzögerungsstellung einnehmen.So is at a closing process the gas exchange valves, which enclosed in the wing chambers Lubricating oil over the vertical hole in the rocker arm and the tapping hole in the cylinder head as well as over a line with the valve closed in the valve unit of the throttle or a clocked solenoid shut-off valve be fed in the other valve unit, wherein the inlet valves a delay position taking.
Damit die Teleskopeinrichtung ständig gegen das eine freie Ende des Kipphebels drücken kann, ist das Teleskopglied im hohlen Zylinderschaft der Stoßstange geführt und zwischen einem herausstehenden Kopf des Teleskopgliedes und einem äußeren Abstützring des Zylinderschaftes ist eine Druckfeder angeordnet. In einer Schließphase der Gaswechselventile bzw. in einer Nockenschließphase wird mit einer zeitlichen Verzögerung Schmieröl aus den Flügelkammern herausgepreßt, derart, daß die Federkräfte der Ventilfedern die Druckfeder der Teleskopeinrichtung überdrückend ausgebildet sind und die Auslaßventile einer Schließstellung zuführbar sind.In order to the telescope device constantly against which a free end of the rocker arm can press, is the telescopic member guided in the hollow cylindrical shaft of the bumper and between a protruding Head of the telescopic member and an outer support ring of the cylindrical shank a compression spring is arranged. In a closing phase of the gas exchange valves or in a cam closing phase comes with a time delay oil from the wing chambers forced out, such that the spring forces the valve springs formed the compression spring of the telescopic device overpressing are and the exhaust valves a closed position supplied are.
In einer nach der Schließphase der Gaswechselventile anschließenden Öffnungsphase der Gaswechselventile wird das Schmieröl über das Rückschlagventil, eine Leitung sowie über die Anstichbohrung und die axiale Bohrung der Ringkammer zugeleitet.In one after the closing phase the gas exchange valves subsequent opening phase the gas exchange valves, the lubricating oil through the check valve, a line as well as over the tapping bore and the axial bore of the annular chamber fed.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt. Es zeigen:One embodiment The invention is shown schematically in the drawing. Show it:
Hierbei
sind Einlaßventile
Die
Verzögerungseinrichtung
E umfaßt
die im Kipphebel
Die
Flügelkammern
Die
Teleskopeinrichtung T besteht im Wesentlichen aus einem in der hohlen
Stoßstange
Zum Öffnen der
Einlaßventile
Der
Schließvorgang
der Einlaßventile
Wenn
dagegen das Absperrventil
Da
jetzt keine kraftschlüssige
Verbindung zu der durch die Nockenkurve abwärts gehende Stoßstange
Während der
Nockenschließphase
gelangt zeitlich gestreckt über
die Drossel
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10359087A DE10359087B3 (en) | 2003-12-17 | 2003-12-17 | Variable valve control for gas or diesel engine using delay device for delayed closure of engine entry or exit valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10359087A DE10359087B3 (en) | 2003-12-17 | 2003-12-17 | Variable valve control for gas or diesel engine using delay device for delayed closure of engine entry or exit valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10359087B3 true DE10359087B3 (en) | 2005-05-19 |
Family
ID=34442521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10359087A Expired - Fee Related DE10359087B3 (en) | 2003-12-17 | 2003-12-17 | Variable valve control for gas or diesel engine using delay device for delayed closure of engine entry or exit valves |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10359087B3 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT501678B1 (en) * | 2006-06-29 | 2008-02-15 | Avl List Gmbh | Internal combustion engine for hybrid vehicle, has camshaft rotatable by phase shifter, and another camshaft rotated by another phase shifter so that phase-shifting of latter camshaft is result of sum of adjusting movements of shifters |
| DE102008026323A1 (en) * | 2007-06-15 | 2008-12-24 | Holstein, Viktor, Dipl.-Ing. (FH) | Method for variable throttle with which control device has variable valve impulses for four-stroke piston engine, involves absorbing load by variable back thrust control with ambient pressure and with positive pressure |
| WO2012129131A3 (en) * | 2011-03-22 | 2013-02-28 | Robert Bosch Gmbh | Device and method configured to control valve operation in piston engine |
| EP2677142A1 (en) | 2012-06-22 | 2013-12-25 | Caterpillar Motoren GmbH & Co. KG | Method and device for controlling the operation of dual-fuel engine |
| EP2752571A1 (en) | 2013-01-07 | 2014-07-09 | Caterpillar Motoren GmbH & Co. KG | Method and device for controlling the operation of a dual fuel engine |
| EP2752561A1 (en) | 2013-01-07 | 2014-07-09 | Caterpillar Motoren GmbH & Co. KG | Method and device for controlling the operation of an internal combustion engine |
| WO2014106681A1 (en) * | 2013-01-03 | 2014-07-10 | Wärtsilä Finland Oy | Exhaust valve arrangement and method for controlling closing of an exhaust valve |
| US9506382B2 (en) | 2015-03-30 | 2016-11-29 | Caterpillar Inc. | Variable valve actuator |
| EP3106637A1 (en) * | 2015-06-20 | 2016-12-21 | MAN Truck & Bus AG | Method for operating a gas motor |
| DE102016112447A1 (en) | 2016-07-07 | 2018-01-11 | Man Diesel & Turbo Se | Valve train for an internal combustion engine and internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3737820A1 (en) * | 1987-11-06 | 1989-08-10 | Schatz Oskar | Method for operating an internal combustion engine and internal combustion engine for carrying out the method |
| SE0202124L (en) * | 2002-07-05 | 2004-01-06 | Volvo Lastvagnar Ab | Combustion engine device |
-
2003
- 2003-12-17 DE DE10359087A patent/DE10359087B3/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3737820A1 (en) * | 1987-11-06 | 1989-08-10 | Schatz Oskar | Method for operating an internal combustion engine and internal combustion engine for carrying out the method |
| SE0202124L (en) * | 2002-07-05 | 2004-01-06 | Volvo Lastvagnar Ab | Combustion engine device |
| WO2004005677A1 (en) * | 2002-07-05 | 2004-01-15 | Volvo Lastvagnar Ab | Apparatus for an internal combustion engine |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT501678B1 (en) * | 2006-06-29 | 2008-02-15 | Avl List Gmbh | Internal combustion engine for hybrid vehicle, has camshaft rotatable by phase shifter, and another camshaft rotated by another phase shifter so that phase-shifting of latter camshaft is result of sum of adjusting movements of shifters |
| DE102008026323A1 (en) * | 2007-06-15 | 2008-12-24 | Holstein, Viktor, Dipl.-Ing. (FH) | Method for variable throttle with which control device has variable valve impulses for four-stroke piston engine, involves absorbing load by variable back thrust control with ambient pressure and with positive pressure |
| WO2012129131A3 (en) * | 2011-03-22 | 2013-02-28 | Robert Bosch Gmbh | Device and method configured to control valve operation in piston engine |
| US8555834B2 (en) | 2011-03-22 | 2013-10-15 | Robert Bosch Gmbh | Device and method configured to control valve operation in a piston engine |
| CN103534455A (en) * | 2011-03-22 | 2014-01-22 | 罗伯特·博世有限公司 | Device and method configured to control valve operation in piston engine |
| CN103534455B (en) * | 2011-03-22 | 2016-08-17 | 罗伯特·博世有限公司 | A kind of explosive motor and the method for operation explosive motor |
| EP2677142A1 (en) | 2012-06-22 | 2013-12-25 | Caterpillar Motoren GmbH & Co. KG | Method and device for controlling the operation of dual-fuel engine |
| WO2013189603A1 (en) | 2012-06-22 | 2013-12-27 | Caterpillar Motoren Gmbh & Co. Kg | Method and device for controlling the operation of dual-fuel engine |
| WO2014106681A1 (en) * | 2013-01-03 | 2014-07-10 | Wärtsilä Finland Oy | Exhaust valve arrangement and method for controlling closing of an exhaust valve |
| EP2752561A1 (en) | 2013-01-07 | 2014-07-09 | Caterpillar Motoren GmbH & Co. KG | Method and device for controlling the operation of an internal combustion engine |
| EP2752571A1 (en) | 2013-01-07 | 2014-07-09 | Caterpillar Motoren GmbH & Co. KG | Method and device for controlling the operation of a dual fuel engine |
| US9506382B2 (en) | 2015-03-30 | 2016-11-29 | Caterpillar Inc. | Variable valve actuator |
| EP3106637A1 (en) * | 2015-06-20 | 2016-12-21 | MAN Truck & Bus AG | Method for operating a gas motor |
| CN106257005A (en) * | 2015-06-20 | 2016-12-28 | 曼卡车和巴士股份公司 | For the method running gas engine |
| US10753251B2 (en) | 2015-06-20 | 2020-08-25 | Man Truck & Bus Ag | Method for operating a gas engine |
| DE102016112447A1 (en) | 2016-07-07 | 2018-01-11 | Man Diesel & Turbo Se | Valve train for an internal combustion engine and internal combustion engine |
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