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1. WO2016023687 - CAMSHAFT WITH SLIDING CAM PACKET

Publication Number WO/2016/023687
Publication Date 18.02.2016
International Application No. PCT/EP2015/065558
International Filing Date 08.07.2015
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
F01L 1/053 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
02Valve drive
04by means of cams, camshafts, cam discs, eccentrics, or the like
047Camshafts
053overhead type
CPC
F01L 1/053
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
02Valve drive
04by means of cams, camshafts, cam discs, eccentrics or the like
047Camshafts
053overhead type
F01L 13/0036
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
0036the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
F01L 2001/0473
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
02Valve drive
04by means of cams, camshafts, cam discs, eccentrics or the like
047Camshafts
0471Assembled camshafts
0473Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
F01L 2013/0052
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
0036the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
0052with cams provided on an axially slidable sleeve
Applicants
  • THYSSENKRUPP PRESTA TECCENTER AG [LI]/[LI]
Inventors
  • WEIDAUER, Marcel
  • MEHLHORN, Tobias
Agents
  • THYSSENKRUPP AG
Priority Data
10 2014 111 383.711.08.2014DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) NOCKENWELLE MIT SCHIEBENOCKENPAKET
(EN) CAMSHAFT WITH SLIDING CAM PACKET
(FR) ARBRE À CAMES AVEC BLOC DE CAMES COULISSANTES
Abstract
(DE)
Die vorliegende Erfindung betrifft eine Nockenwelle (1) zum Ventiltrieb einer Brennkraftmaschine mit einer Grundwelle (10) und mit wenigstens einem Schiebenockenpaket (11) umfassend mehrere Nockenprofile (12), wobei sich die Grundwelle (10) durch einen Durchgang (13) im Schiebenockenpaket (11) hindurch erstreckt, sodass dieses auf der Grundwelle (10) axial verschieblich aufgenommen ist, und wobei Mittel (14) zur Bildung einer drehmomentübertragenden Verbindung zwischen der Grundwelle (10) und dem Schiebenockenpaket (11) vorgesehen sind. Erfindungsgemäß umfassen die Mittel (14) länglich ausgebildete Nadellagerelemente (15), die mit einem ersten Teil ihres Kreisquerschnittes in einer Längsnut (16) im Durchgang (13) des Schiebenockenpaketes (11) einsitzen und die mit einem zweiten Teil des gleichen Querschnittes in einer Längsnut (17) in der Außenseite der Grundwelle (10) einsitzen.
(EN)
The invention relates to a camshaft (1) for the valve drive of an internal combustion engine, comprising a base shaft (10) and at least one sliding cam packet (11) comprising multiple profiled cams (12). The base shaft (10) extends through a passage (13) in the sliding cam packet (11) such that the packet is received on the base shaft (10) in an axially movable manner. Means (14) for forming a torque-transmitting connection between the base shaft (10) and the sliding cam packet (11) are provided. According to the invention, the means (14) comprise elongated needle bearing elements (15), a first part of the circular cross-section of said elements sitting in a longitudinal groove (16) in the passage (13) of the sliding cam packet (11) and a second part of the same cross-section sitting in a longitudinal groove (17) on the outside of the base shaft (10).
(FR)
La présente invention concerne un arbre à cames (1) pour la commande des soupapes d'un moteur à combustion interne, comprenant un arbre de base (10) et comprenant au moins un bloc de cames coulissantes (11) incluant une pluralité de profils de came (12). L'arbre de base (10) s'étend à travers un passage (13) dans le bloc de cames coulissantes (11), de sorte que celui-ci est monté coulissant sur l'arbre de base (10), et des moyens (14) sont présents pour former une liaison de transmission de couple entre l'arbre de base (10) et le bloc de cames coulissantes (11). Selon l'invention, les moyens (14) comprennent des éléments de roulement à aiguilles (15) de configuration allongée qui s'engagent avec une première partie de leur section transversale circulaire dans une rainure longitudinale (16) dans le passage (13) du bloc de cames coulissantes (11), et qui s'engagent avec une deuxième partie de la même section transversale dans une rainure longitudinale (17) dans le côté extérieur de l'arbre de base (10).
Also published as
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