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1. WO2020201137 - VALVE TRAIN WITH HYDRAULIC DELAY ELEMENT FOR AN INTERNAL COMBUSTION ENGINE

Publication Number WO/2020/201137
Publication Date 08.10.2020
International Application No. PCT/EP2020/058812
International Filing Date 27.03.2020
IPC
F01L 9/02 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
9Valve-gear or valve arrangements actuated non-mechanically
02by fluid means, e.g. hydraulic
F01L 1/18 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
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting-gear between valve drive and valve
18Rocking arms or levers
F01L 1/14 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
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting-gear between valve drive and valve
14Tappets; Push-rods
CPC
F01L 1/146
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting gear between valve drive and valve
14Tappets
146Push-rods
F01L 1/181
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting gear between valve drive and valve
18Rocking arms or levers
181Centre pivot rocking arms
F01L 1/185
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting gear between valve drive and valve
18Rocking arms or levers
185Overhead end-pivot rocking arms
F01L 1/26
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
26characterised 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
F01L 2013/105
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
10Auxiliary actuators for variable valve timing
105Hydraulic motors
F01L 9/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
9Valve-gear or valve arrangements actuated non-mechanically
02by fluid means, e.g. hydraulic
Applicants
  • ABB SWITZERLAND LTD. [CH]/[CH]
Inventors
  • MATHEY, Christoph
  • RYSER, Raphael
  • STREBEL, Andreas
Agents
  • ZIMMERMANN & PARTNER PATENTANWÄLTE MBB
Priority Data
19166327.729.03.2019EP
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VENTILTRIEB MIT HYDRAULISCHEM VERZÖGERUNGSELEMENT FÜR EINEN VERBRENNUNGSMOTOR
(EN) VALVE TRAIN WITH HYDRAULIC DELAY ELEMENT FOR AN INTERNAL COMBUSTION ENGINE
(FR) COMMANDE DE SOUPAPE COMPRENANT UN ÉLÉMENT DE RETARDEMENT HYDRAULIQUE POUR UN MOTEUR À COMBUSTION
Abstract
(DE)
Ein Ventiltrieb (1) für einen Verbrennungsmotor und ein Verbrennungsmotor werden hierin beschrieben. Der Ventiltrieb weist einen Einlassventil-Betätigungsmechanismus (20) zur periodischen Betätigung eines Einlassventils (24) des Verbrennungsmotors auf. Ferner weist der Ventiltrieb (1) ein mit dem Einlassventil-Betätigungsmechanismus (20) in Kontakt befindliches Verzögerungselement (8) mit einer Hydraulikkammer (12) zum Verzögern einer Schließbewegung des Einlassventils (24) mittels eines Hydraulikmediums auf. Der Ventiltrieb (1) weist eine Hydraulik- Zufuhr zum Zuführen des Hydraulikmediums in die Hydraulikkammer (12) auf, wobei die Hydraulik-Zufuhr eine Steuerwelle (7) aufweist, wobei die Steuerwelle (7) von dem Verbrennungsmotor mechanisch angetrieben wird. Die Steuerwelle (7) weist einen axial ausgedehnten Hohlraum (10) für das Hydraulikmedium, und mindestens eine Öffnung (5) zum intermittierenden Zuführen des Hydraulikmediums von dem Hohlraum (10) hin zu der Hydraulikkammer (12) auf. Weiterhin wird ein Verbrennungsmotor mit einer Vielzahl von Ventiltrieben beschrieben.
(EN)
The invention relates to a valve train (1) for an internal combustion engine and to an internal combustion engine. The valve train has an inlet valve actuation mechanism (20) for the periodic actuation of an inlet valve (24) of the internal combustion engine. The valve train (1) also has a delay element (8), which is in contact with the inlet valve actuation mechanism (20) and which has a hydraulic chamber (12) for delaying a closing movement of the inlet valve (24) by means of a hydraulic medium. The valve train (1) has a hydraulic feed for feeding the hydraulic medium into the hydraulic chamber (12), the hydraulic feed having a control shaft (7), and the control shaft (7) being mechanically driven by the internal combustion engine. The control shaft (7) has an axially extended cavity (10) for the hydraulic medium, and at least one opening (5) for intermittently feeding the hydraulic medium from the cavity (10) to the hydraulic chamber (12). The invention also relates to an internal combustion engine having a plurality of valve trains.
(FR)
L'invention concerne une commande de soupape (1) pour un moteur à combustion et un moteur à combustion. La commande de soupape présente un mécanisme d'actionnement de soupape d'entrée (20) pour l'actionnement périodique d'une soupape d'entrée (24) du moteur à combustion. La commande de soupape (1) présente en outre un élément de retardement (8) se trouvant en contact avec le mécanisme d'actionnement de soupape d'entrée (20), comprenant une chambre hydraulique (12) pour le retardement d'un mouvement de fermeture de la soupape d'entrée (24) au moyen d'un fluide hydraulique. La commande de soupape (1) présente une alimentation hydraulique pour l'alimentation du fluide hydraulique dans la chambre hydraulique (12), l'alimentation hydraulique présentant un arbre de commande (7), l'arbre de commande (7) étant entraîné mécaniquement par le moteur à combustion. L'arbre de commande (7) présente une cavité (10) à extension axiale pour le fluide hydraulique, et au moins une ouverture (5) pour l'alimentation intermittente du fluide hydraulique de la cavité (10) vers la chambre hydraulique (12). L'invention concerne en outre un moteur à combustion comprenant une pluralité de commandes de soupape.
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