DE102007049110A1 - Internal-combustion engine i.e. diesel engine, for motor vehicle, has rocker tiltable around pivot axis and arranged such that shafts acts in corresponding areas, which are arranged at opposite sides of rocker with respect to pivot axis - Google Patents
Internal-combustion engine i.e. diesel engine, for motor vehicle, has rocker tiltable around pivot axis and arranged such that shafts acts in corresponding areas, which are arranged at opposite sides of rocker with respect to pivot axis Download PDFInfo
- Publication number
- DE102007049110A1 DE102007049110A1 DE102007049110A DE102007049110A DE102007049110A1 DE 102007049110 A1 DE102007049110 A1 DE 102007049110A1 DE 102007049110 A DE102007049110 A DE 102007049110A DE 102007049110 A DE102007049110 A DE 102007049110A DE 102007049110 A1 DE102007049110 A1 DE 102007049110A1
- Authority
- DE
- Germany
- Prior art keywords
- rocker
- pivot axis
- camshaft
- valves
- valve
- 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
- 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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
-
- 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
- F01L13/0047—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 the movement of the valves resulting from the sum of the simultaneous actions of at least two cams, the cams being independently variable in phase in respect of each other
-
- 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
- F02D13/0211—Variable control of intake and exhaust valves changing valve lift or valve lift and timing the change of valve timing is caused by the change in valve lift, i.e. both valve lift and timing are functionally related
-
- 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
- F02D13/0257—Independent control of two or more intake or exhaust valves respectively, i.e. one of two intake valves remains closed or is opened partially while the other is fully opened
-
- 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
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
- F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
-
- 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
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
-
- 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
- F01L2800/10—Providing exhaust gas recirculation [EGR]
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/01—Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped in the cylinder or pushed back from the intake or the exhaust manifold into the combustion chamber without the use of additional passages
-
- 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 Brennkraftmaschine, insbesondere Dieselmotor, insbesondere eines Kraftfahrzeugs, mit wenigstens einem Arbeitszylinder, wobei jedem Arbeitszylinder wenigstens ein erstes Einlassventil und wenigstens ein zweites Einlassventil sowie wenigstens ein erstes Auslassventil und wenigstens ein zweites Auslassventil zugeordnet sind, wobei eine erste Nockenwelle vorgesehen ist, welche die ersten Einlassventile und die ersten Auslassventile eines jeden Arbeitszylinders betätigt, wobei eine zweite Nockenwelle vorgesehen ist, welche die zweiten Einlassventile und die zweiten Auslassventile eines jeden Arbeitszylinders betätigt, wobei an der zweiten Nockenwelle ein Versteller angeordnet ist, welcher Ventilsteuerzeiten der dieser zweiten Nockenwelle zugeordneten Ein- und Auslassventile gegenüber den Ventilsteuerzeiten der ersten Nockenwelle wahlweise nach früh oder spät verstellt, gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to an internal combustion engine, in particular a diesel engine, in particular of a motor vehicle, with at least one working cylinder, wherein each working cylinder at least a first inlet valve and at least a second inlet valve and at least a first one Exhaust valve and at least one second exhaust valve are assigned, wherein a first camshaft is provided, which the first intake valves and actuates the first exhaust valves of each working cylinder, wherein a second camshaft is provided, which are the second Intake valves and the second exhaust valves of each working cylinder actuated, wherein at the second camshaft an adjuster is arranged, which valve timing of the second camshaft associated intake and exhaust valves against the valve timing the first camshaft optional early or late adjusted, according to the preamble of the claim 1.
Aus
Aus
der
Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine der o. g. Art hinsichtlich Einlass- sowie Auslassdauer der Gaswechselventile und damit der Zylinderfüllung zu verbessern.Of the Invention is the object of an internal combustion engine of o. g. Type of inlet and outlet duration of gas exchange valves and thus improving the cylinder filling.
Diese Aufgabe wird erfindungsgemäß durch eine Brennkraftmaschine der o. g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.These The object is achieved by an internal combustion engine the o. g. Art solved with the features characterized in claim 1. Advantageous embodiments of the invention are in the other Claims described.
Dazu ist es bei einer Brennkraftmaschine der o. g. Art erfindungsgemäß vorgesehen, dass wenigstens eine Kipphebelbrücke derart angeordnet und ausgebildet ist, dass das erste und zweite Einlassventil wenigstens eines Arbeitszylinders gemeinsam und/oder das erste und zweite Auslassventil wenigstens eines Arbeitszylinders gemeinsam jeweils über eine Kipphebelbrücke betätigbar sind, wobei an der Kipphebelbrücke um eine Schwenkachse schwenkbar eine Wippe derart angeordnet ist, dass die erste Nockenwelle mit einem jeweiligen Nocken an einer ersten Stelle beabstandet von der Schwenkachse auf die Wippe einwirkt und die zweite Nockenwelle über einen jeweiligen Nocken an einer zweiten Stelle beabstandet von der Schwenkachse auf die Wippe einwirkt, wobei die erste und die zweite Stelle an gegenüberliegenden Seiten der Wippe bezogen auf die Schwenkachse angeordnet sind.To it is in an internal combustion engine o. g. Art provided according to the invention, that at least one rocker arm bridge arranged such and is configured such that the first and second inlet valves at least a working cylinder together and / or the first and second exhaust valve at least one working cylinder together in each case via a Rocker arm bridge are actuated, wherein at the rocker arm bridge pivotable about a pivot axis a rocker is arranged such that the first camshaft with a respective cam on a first Spaced from the pivot axis acts on the rocker and the second camshaft via a respective cam a second location spaced from the pivot axis on the rocker acts, with the first and the second position on opposite Pages of the rocker are arranged relative to the pivot axis.
Dies hat den Vorteil, dass sich die Einlass- und Auslassdauer der Gaswechselventile erhöht und NOx-Grenzwerte auch für hochdynamische Testzyklen (schnelle EGR) eingehalten werden, ohne dass hierfür kostspielige Abgasnachbehandlungsmaßnahmen, wie SCR, notwendig wären.This has the advantage that the intake and exhaust duration of the gas exchange valves increased and NOx limits even for highly dynamic Test cycles (fast EGR) are met without this costly exhaust aftertreatment measures such as SCR necessary would.
Zweckmäßigerweise ist die erste und/oder zweite Stelle als Rollenabgriff ausgebildet.Conveniently, the first and / or second position is designed as a roller tap.
In einer bevorzugten Ausführungsform ist die erste Stelle an der Wippe mit einem identischen oder einem unterschiedlichen Abstand von der Schwenkachse wie die zweite Stelle angeordnet.In a preferred embodiment is the first location on the seesaw with an identical or a different one Distance from the pivot axis as the second location arranged.
Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Diese zeigt inThe The invention will be explained in more detail below with reference to the drawing explained. This shows in
Die
in
An
der Kipphebelbrücke
Die
Nocken
In
den
Durch
die erfindungsgemäße Kopplung der Nockenhübe
der Nocken
Gleiches
gilt analog für die beiden Auslassventile
Zusätzlich
ist aus
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES 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 The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 1417399 B1 [0002] EP 1417399 B1 [0002]
- - DE 10147305 A1 [0003] - DE 10147305 A1 [0003]
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007049110.9A DE102007049110B4 (en) | 2007-10-12 | 2007-10-12 | Internal combustion engine with two mixed camshafts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007049110.9A DE102007049110B4 (en) | 2007-10-12 | 2007-10-12 | Internal combustion engine with two mixed camshafts |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007049110A1 true DE102007049110A1 (en) | 2009-04-16 |
DE102007049110B4 DE102007049110B4 (en) | 2017-06-22 |
Family
ID=40435456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007049110.9A Active DE102007049110B4 (en) | 2007-10-12 | 2007-10-12 | Internal combustion engine with two mixed camshafts |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007049110B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013020923A1 (en) * | 2013-12-11 | 2015-06-11 | Daimler Ag | Piston engine and associated operating method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3531000A1 (en) * | 1985-08-30 | 1986-08-28 | Herbert Dipl.-Ing. 8000 München Gohle | Device for reducing the throttle losses in piston engines under partial load by phase control of the valves |
US5052350A (en) * | 1990-11-02 | 1991-10-01 | King Brian T | Device to combine the motions of two camlobes differentially phased |
DE19600536A1 (en) * | 1996-01-09 | 1997-07-10 | Meta Motoren Energietech | Device for variable control of inlet valve of combustion engine |
DE10147305A1 (en) | 2001-09-26 | 2003-04-17 | Bosch Gmbh Robert | Internal combustion engine |
DE10303601A1 (en) * | 2003-01-30 | 2004-08-12 | Mahle Ventiltrieb Gmbh | valve control |
EP1417399B1 (en) | 2001-08-18 | 2005-04-27 | Mechadyne PLC | Adjustable valve control system with twin cams and a cam lift summation lever |
-
2007
- 2007-10-12 DE DE102007049110.9A patent/DE102007049110B4/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3531000A1 (en) * | 1985-08-30 | 1986-08-28 | Herbert Dipl.-Ing. 8000 München Gohle | Device for reducing the throttle losses in piston engines under partial load by phase control of the valves |
US5052350A (en) * | 1990-11-02 | 1991-10-01 | King Brian T | Device to combine the motions of two camlobes differentially phased |
DE19600536A1 (en) * | 1996-01-09 | 1997-07-10 | Meta Motoren Energietech | Device for variable control of inlet valve of combustion engine |
EP1417399B1 (en) | 2001-08-18 | 2005-04-27 | Mechadyne PLC | Adjustable valve control system with twin cams and a cam lift summation lever |
DE10147305A1 (en) | 2001-09-26 | 2003-04-17 | Bosch Gmbh Robert | Internal combustion engine |
DE10303601A1 (en) * | 2003-01-30 | 2004-08-12 | Mahle Ventiltrieb Gmbh | valve control |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013020923A1 (en) * | 2013-12-11 | 2015-06-11 | Daimler Ag | Piston engine and associated operating method |
Also Published As
Publication number | Publication date |
---|---|
DE102007049110B4 (en) | 2017-06-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2066874B1 (en) | Internal combustion engine with mixed camshafts | |
EP2048331B1 (en) | Combustion engine with mixed camshafts | |
DE10228022B4 (en) | Valve lifting device for stroke adjustment of the gas exchange valves of an internal combustion engine | |
DE102011018503A1 (en) | Valve gear for gas exchange valves of an internal combustion engine with a basic camshaft and between pivot bearings of the basic camshaft in two or more discrete shift positions displaceable cam carriers | |
EP3385513A1 (en) | Variable valve drive | |
DE102011014308A1 (en) | Internal combustion engine with mixed camshaft | |
DE102007040697A1 (en) | Internal combustion engine | |
DE102007049110B4 (en) | Internal combustion engine with two mixed camshafts | |
DE102015205297A1 (en) | Internal combustion engine | |
DE102010036899A1 (en) | Internal combustion engine | |
AT510528B1 (en) | FOUR-STROKE COMBUSTION ENGINE WITH A MOTOR BRAKE | |
DE102008024875A1 (en) | Valve gear for gas shuttle valve of internal-combustion engine, has cam shaft, where unit is provided for axial shifting of cam carriers that are mutually overlapped to each other in adjusting way | |
EP1375843B1 (en) | Internal combustion engine | |
DE10349898A1 (en) | Valve gear of an internal combustion engine with at least one camshaft | |
EP3536917A1 (en) | Variable valve drive with sliding cam system for a combustion engine | |
WO2020108933A1 (en) | Variable-lift valve train having at least two working positions | |
DE4232848A1 (en) | Valve actuation mechanism | |
AT516570B1 (en) | Variable valve train | |
DE102010051832A1 (en) | Method for operating e.g. petrol engine, involves introducing cylinder load into he working cylinder through inlet valve at valve lift variable with respect to crank angle of engine | |
DE102022115483A1 (en) | Valve arrangement for a valve train of an internal combustion engine | |
EP1636466A2 (en) | Internal combustion engine | |
WO2015067269A2 (en) | Variable-stroke valve train of an internal combustion engine | |
DE102011103870A1 (en) | Internal combustion engine | |
DE102014003466A1 (en) | Device and method for the variable control of a valve of an internal combustion engine | |
DE102011085709A1 (en) | Switchable lever-like cam follower i.e. switchable rocker arm, for variable valve train of single-cylinder engine of motor cycle, has control body whose contour is transferred to coupling position upon movement of body to operation position |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20140926 |
|
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |