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1. WO2009043331 - DEVICE FOR CONTROLLING THE RESIDUAL GAS CONTENT OF CYLINDERS OF AN INTERNAL COMBUSTION ENGINE

Publication Number WO/2009/043331
Publication Date 09.04.2009
International Application No. PCT/DE2008/001595
International Filing Date 02.10.2008
IPC
F01L 13/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
F02D 13/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
13Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
02during engine operation
CPC
F01L 13/0005
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0005Deactivating valves
F01L 13/0021
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0015for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
0021by modification of rocker arm ratio
F01L 13/0026
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0015for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
0021by modification of rocker arm ratio
0026by means of an eccentric
F01L 2013/0068
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0015for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
0063by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
0068with an oscillating cam acting on the valve of the "BMW-Valvetronic" type
F01L 2800/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2800Methods of operation using a variable valve timing mechanism
08Timing or lift different for valves of different cylinders
F02D 13/0242
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
13Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
02during engine operation
0242Variable control of the exhaust valves only
Applicants
  • HYDRAULIK-RING GMBH [DE]/[DE] (AllExceptUS)
  • ENTEC CONSULTING GMBH [DE]/[DE] (AllExceptUS)
  • KNECHT, Andreas [DE]/[DE] (UsOnly)
  • FLIERL, Rudolf [DE]/[DE] (UsOnly)
Inventors
  • KNECHT, Andreas
  • FLIERL, Rudolf
Agents
  • BERGEMANN, Holger
Priority Data
10 2007 047 582.004.10.2007DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) EINRICHTUNG ZUR STEUERUNG DES RESTGASGEHALTES VON ZYLINDERN EINER VERBRENNUNGSKRAFTMASCHINE
(EN) DEVICE FOR CONTROLLING THE RESIDUAL GAS CONTENT OF CYLINDERS OF AN INTERNAL COMBUSTION ENGINE
(FR) DISPOSITIF POUR COMMANDER LA TENEUR EN GAZ RÉSIDUEL DE CYLINDRES D'UN MOTEUR À COMBUSTION INTERNE
Abstract
(DE)
Die Erfindung betrifft eine Einrichtung zur Steuerung des Restgasgehaltes von einzelnen Zylinder einer Verbrennungskraftmaschine mit mechanisch vollvariablem Ventiltrieb und drosselfreier Laststeuerung sowie insbesondere einem mechanisch starren Ventiltrieb auf der Auslassseite, wobei eine Auslassnockenwelle (1) eine unsymmetrische Anordnung von Nocken (2) aufweist, wobei die Nocken (2) einzelner spezieller Zylinder auf der Auslassnockenwelle (1) zur Anpassung des Restgasgehaltes unterschiedliche Nockenstrukturen (3) aufweissen und derart verdrehbar vorgesehen sind, dass eine Auslassspreizung (5) bei Zylindern mit zu hohem Restgasgehalt verkleinert wird, oder dass eine Auslassöffnungszeit der einzelnen Zylinder so anpassbar ist, dass sich die gleiche Menge an Restgas in allen Zylindern einstellt.
(EN)
The invention relates to a device for controlling the residual gas content of individual cylinders of an internal combustion engine having a mechanically fully variable valve train and throttle-free load control, and particularly a mechanically rigid valve train on the exhaust side, wherein an exhaust camshaft (1) has an asymmetrical arrangement of cams (2), wherein the cams (2) of individual special cylinders on the exhaust camshaft (1) have different cam structures (3) in order to adjust the residual gas content and are provided rotatably such that an exhaust spread (5) is reduced for cylinders having too high a residual gas content, or that an exhaust opening time of the individual cylinders can be adjusted such that the same quantity of residual gas is obtained in all cylinders.
(FR)
L'invention concerne un dispositif pour commander la teneur en gaz résiduel de cylindres individuels d'un moteur à combustion interne doté d'une distribution à variation mécanique intégrale et d'une commande de charge sans étranglement, et notamment d'une distribution mécaniquement rigide du côté d'échappement. Un arbre à cames côté échappement (1) présente une disposition asymétrique des cames (2); et les cames (2) de cylindres spéciaux individuels présentent sur l'arbre à cames côté échappement (1) des structures de cames différentes (3) afin d'adapter la teneur en gaz résiduel, et présentent une rotation relative de telle sorte qu'un écartement d'échappement (5) est réduit pour des cylindres ayant une teneur en gaz résiduelle excessive, ou qu'un temps d'échappement des cylindres individuels peut être adapté de telle sorte que la même quantité de gaz résiduel se règle dans tous les cylindres.
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