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1. WO2021110250 - AN ASSEMBLY FOR TRANSMITTING FORCE FROM A ROCKER ARM TO AN END OF TWO VALVE STEMS IN AN INTERNAL COMBUSTION PISTON ENGINE

Publication Number WO/2021/110250
Publication Date 10.06.2021
International Application No. PCT/EP2019/083587
International Filing Date 04.12.2019
IPC
F01L 1/24 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
20Adjusting or compensating clearance, i.e. lash adjustment
22automatically
24by fluid means, e.g. hydraulically
F01L 1/26 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
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 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
CPC
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 1/2411
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
20Adjusting or compensating clearance
22automatically, e.g. mechanically
24by fluid means, e.g. hydraulically
2411by means of a hydraulic adjusting device located between the valve stem and rocker arm
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 2305/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2305Valve arrangements comprising rollers
Applicants
  • WÄRTSILÄ FINLAND OY [FI]/[FI]
Inventors
  • HÄGGBLOM, Daniel
Agents
  • GENIP OY
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AN ASSEMBLY FOR TRANSMITTING FORCE FROM A ROCKER ARM TO AN END OF TWO VALVE STEMS IN AN INTERNAL COMBUSTION PISTON ENGINE
(FR) ENSEMBLE DESTINÉ À LA TRANSMISSION D'UNE FORCE D'UN CULBUTEUR À UNE EXTRÉMITÉ DE DEUX TIGES DE SOUPAPE DANS UN MOTEUR À PISTON À COMBUSTION INTERNE
Abstract
(EN)
Invention relates to an assembly (10) for transmitting force from a rocker arm (14) to an end of two valve stems (16) in an internal combustion piston engine, comprising a guide part (18) and a yoke part (20), wherein the guide part (18) comprising a guiding surface (24), a first conduit (26) for introducing lubrication oil to the yoke part (20), which first conduit (26) has at least one inlet, and at least one outlet (30) at the guiding surface (24) of the guide part (18), and the yoke part (20) comprising an axially elongated guide opening (32) to receive the guide part (18), having a first longitudinal axis (A1), and a guiding surface (34) arranged to cooperate with the guiding surface (24) of the guide part (18), a second conduit (36) for receiving lubrication oil from the guide part (18) having an inlet (38) at 10 the guiding surface (34) of the guide opening (32), two arms (20.2, 20.3), which comprise a cylindrical space (40) having a second longitudinal axis (A2), at an end of the arms (20.2, 20.3), wherein the first and the second longitudinal axes (A1, A2) are parallel to each other, and wherein the second conduit (36) has an outlet (44) opening into the cylindrical space (40), a piston member (42) arranged to each one of the cylindrical spaces (40) in the arms (20.2, 20.3), configured to transmit force from the yoke part (20) to an end a valve stem (16), and the second conduit (36) is provided with a one-way valve (46) in operational connection with each one of the cylindrical spaces (40).
(FR)
L'invention concerne un ensemble (10) destiné à la transmission d'une force à partir d'un culbuteur (14) à une extrémité de deux tiges de soupape (16) dans un moteur à piston à combustion interne. Ledit ensemble comprend une partie de guidage (18) et une partie culasse (20). La partie de guidage (18) est dotée d'une surface de guidage (24), d'un premier conduit (26) servant à introduire de l'huile de lubrification dans la partie culasse (20) et présentant au moins une entrée et au moins une sortie (30) au niveau de la surface de guidage (24) de la partie de guidage (18). La partie culasse (20) est dotée d'une ouverture de guidage allongée axialement (32) pour recevoir la partie de guidage (18) présentant un premier axe longitudinal (A1), et une surface de guidage (34) agencée pour coopérer avec la surface de guidage (24) de la partie de guidage (18), d'un second conduit (36) destiné à recevoir l'huile de lubrification provenant de la partie de guidage (18) ayant une entrée (38) à la surface de guidage (34) de l'ouverture de guidage (32), de deux bras (20.2, 20.3), qui comprennent un espace cylindrique (40) ayant un second axe longitudinal (A2), à une extrémité des bras (20.2, 20.3). Les premier et second axes longitudinaux (A1, A2) sont parallèles l'un à l'autre, et le second conduit (36) comporte un orifice de sortie (44) débouchant dans l'espace cylindrique (40), un élément de piston (42) disposé sur chacun des espaces cylindriques (40) dans les bras (20.2, 20.3), configuré pour transmettre une force à partir de la partie culasse (20) à une extrémité d'une tige de soupape (16), et le second conduit (36) est pourvu d'une soupape unidirectionnelle (46) en liaison fonctionnelle avec chacun des espaces cylindriques (40).
Latest bibliographic data on file with the International Bureau