摘要:
The invention proposes a switchable finger lever (1) comprising an inner lever (2) comprising on one end (4), a support (5) for a gas exchange valve and on another end (6), a contact surface (7) for a head of a support element, said inner lever (2) comprising on the one end (4), pivotable outer arms (8) made separately from each other, which outer arms (8) comprise on their upper sides (10), contacting surfaces (11) for high lift cams, a coupling device (12) comprising a coupling slide (13) for simultaneously connecting the outer arms (8) to the inner lever (2) being seated in a section of the another end (6) in the inner lever (2), which coupling slide (13) is seated in an oblong hole (14) extending transversely through the inner lever (2) as also in longitudinal direction of the finger lever (2), the coupling slide (13) comprises two end portions (15) which protrude beyond the outer walls (9), and for effecting coupling, the coupling slide (13) can be displaced with the two end portions (15) partially under entraining surfaces (16) of the outer arms (8), whereas for effecting uncoupling, the coupling slide (13) can be displaced out of the entraining surfaces (16), and at least one restoring spring (17) extends in the region of the another end (6) between the inner lever (2) and the outer arms (8).
摘要:
A deactivating cam system (1) for a valve train (1a) of an internal combustion engine is provided having a camshaft (2) on which at least one cam (3) is seated for rotation but fixed in axial direction while being able to be connected through a coupling device (4) rotationally fast to the camshaft (2). The coupling device (4) has a ball detent mechanism (5) which is arranged within the cam (3) and whose balls (6) are seated within radial pockets (7) of the cam (3).
摘要:
A switchable component, which has a housing with a bore and an inner element held in the bore with a head that projects above a rim of the housing. The housing and the inner element are loaded away from each other by a lost-motion spring. At least one coupling piston sits in an opening of the inner element. Sections of the coupling piston are moveable over a ring surface to a carrier surface of the housing. A retaining ring packet has a circular arc-shaped outer surface that lies in a ring groove of the bore of the housing. A ring face of the inner element sits against the underside of the retaining ring packet in the extended state defining relative position. The retaining ring packet, starting from at least one of the surfaces of the retaining ring packet has recesses for forming tab-like sections lying circumferentially between the recesses.
摘要:
The invention proposes a switchable finger lever (1) comprising an inner lever (2) comprising on one end (4), a support (5) for a gas exchange valve and on another end (6), a contact surface (7) for a head of a support element, said inner lever (2) comprising on the one end (4), pivotable outer arms (8) made separately from each other, which outer arms (8) comprise on their upper sides (10), contacting surfaces (11) for high lift cams, a coupling device (12) comprising a coupling slide (13) for simultaneously connecting the outer arms (8) to the inner lever (2) being seated in a section of the another end (6) in the inner lever (2), which coupling slide (13) is seated in an oblong hole (14) extending transversely through the inner lever (2) as also in longitudinal direction of the finger lever (2), the coupling slide (13) comprises two end portions (15) which protrude beyond the outer walls (9),and for effecting coupling, the coupling slide (13) can be displaced with the two end portions (15) partially under entraining surfaces (16) of the outer arms (8), whereas for effecting uncoupling, the coupling slide (13) can be displaced out of the entraining surfaces (16), and at least one restoring spring (17) extends in the region of the another end (6) between the inner lever (2) and the outer arms (8).
摘要:
A deactivating cam system (1) for a valve train (1a) of an internal combustion engine is provided having a camshaft (2) on which at least one cam (3) is seated for rotation but fixed in axial direction while being able to be connected through a coupling device (4) rotationally fast to the camshaft (2). The coupling device (4) has a ball detent mechanism (5) which is arranged within the cam (3) and whose balls (6) are seated within radial pockets (7) of the cam (3).
摘要:
A switchable component (1) for a valve train of a combustion engine is provided, such as a roller tappet, with a housing (2), in whose borehole (3) an inner element (4) runs that can move relative to the housing in the axial direction. At least one coupling element (6) is allocated to the inner element (4), wherein this coupling element, in the decoupled case, lies with its outer end (7) directly in front of an annular surface (8) between both components (2, 4) and, in the coupled case, engages in some sections with a driver surface (9) in the borehole (3) of the housing (2), and wherein, between the components (2, 4) there is a lost-motion spring element (10) forcing these components away from each other in the axial direction. As the coupling element (6) there is at least one sickle-shaped ratchet that can pivot outward and that sits at least indirectly in an opening (11) in the outer shell (5) of the inner element (4) and that is connected to the inner element (4) in an articulated way at one end (12). An annular groove is present as a driver surface (9) in the borehole (3) of the housing (2) and the coupling element (6) can pivot outward in the coupling direction via the force of a mechanical spring (13) and can pivot inwardly in the decoupling direction via hydraulic medium guided into the driver surface (9) in front of its outer end (7).
摘要:
A switchable component (1) for a valve train of a combustion engine is provided, such as a roller tappet, with a housing (2), in whose borehole (3) an inner element (4) runs that can move relative to the housing in the axial direction. At least one coupling element (6) is allocated to the inner element (4), wherein this coupling element, in the decoupled case, lies with its outer end (7) directly in front of an annular surface (8) between both components (2, 4) and, in the coupled case, engages in some sections with a driver surface (9) in the borehole (3) of the housing (2), and wherein, between the components (2, 4) there is a lost-motion spring element (10) forcing these components away from each other in the axial direction. As the coupling element (6) there is at least one sickle-shaped ratchet that can pivot outward and that sits at least indirectly in an opening (11) in the outer shell (5) of the inner element (4) and that is connected to the inner element (4) in an articulated way at one end (12). An annular groove is present as a driver surface (9) in the borehole (3) of the housing (2) and the coupling element (6) can pivot outward in the coupling direction via the force of a mechanical spring (13) and can pivot inwardly in the decoupling direction via hydraulic medium guided into the driver surface (9) in front of its outer end (7).