Patent application number | Description | Published |
20080289593 | SWITCHABLE VALVE TRAIN FOR GAS-EXCHANGE VALVES OF INTERNAL COMBUSTION ENGINES - A switchable valve train for gas-exchange valves of internal combustion engines with a rocker arm device ( | 11-27-2008 |
20080295789 | ROLLER FINGER FOLLOWER FOR VALVE DEACTIVATION - The finger follower has an inner and outer body and a torsional lost motion spring positioned at its lash adjuster end of the outer body The torsional lost motion springs have a short leg that abuts the outer body and a long leg that contacts the inner body. The torsional spring is located above the pivot point of the finger follower so as to provide a low mass moment of inertia and to reduce the weight over the valve stem end of the follower. | 12-04-2008 |
20090064954 | SWITCHABLE CAM FOLLOWER OF A VALVE TRAIN ASSEMBLY OF AN INTERNAL COMBUSTION ENGINE - A switchable cam follower of a valve train assembly of an internal combustion engine is proposed, with an external lever that encloses an internal lever with its arms, of which components, that can deviate from each other flexibly, run on an axis that is attached to a valve side end, and the internal lever on an underside on the valve side end possesses a mechanism for a gas exchange valve as well as a complementary surface at the other end for storage on a head of a support element. A special characteristic is that guidance plates for the gas exchange valve come out from the underside of the external lever. That way, the switchable cam follower can be made narrower at least on the valve side. In addition, development of the mechanism for the gas exchange valve on the internal lever is simplified. | 03-12-2009 |
20090114177 | ROLLER FINGER FOLLOWER FOR VALVE DEACTIVATION - The finger follower has an inner and outer body and a torsional lost motion spring positioned at its lash adjuster end of the outer body. The torsional lost motion spring has two helical parts each with a short leg that abuts the outer body and a long leg that contacts the inner body. The torsional spring is located above the pivot point of the finger follower so as to provide a low mass moment of inertia and to reduce the weight over the valve stem end of the follower. | 05-07-2009 |
20100300389 | Switchable finger lever - The invention proposes a switchable finger lever ( | 12-02-2010 |
20100300390 | Swithchable finger lever for a valve train of an internal combustion engine - A switchable finger lever for a valve train of an internal combustion engine, said finger lever comprising an inner lever comprising on an underside on one end, a support for a gas exchange valve and on another end, a contact surface for a head of a support element, said inner lever further comprising on the one end, axle stubs protruding on two sides of the inner lever, a first outer arm extending for pivoting relative to the inner lever on one of the axle stubs and a second outer arm extending for pivoting relative to the inner lever on another one of the axle stubs, said outer arms extending in direction of the another end while flanking outer walls of the inner lever and being made as separate parts from each other, a cam contacting surface being arranged on an upper side of each outer arm while, in the region of the another end, a coupling device for an optional connection of the outer arms to the inner lever is seated in the inner lever, and a restoring spring means for each outer arm acts at one end against the inner lever and at another end against the respective outer arm. | 12-02-2010 |
20110005483 | Switchable finger lever - The invention proposes a switchable finger lever ( | 01-13-2011 |
20110197842 | SWITCHABLE ROLLER FINGER FOLLOWER - The finger follower employs two independent lost motion arms and a rod which moves longitudinally to lock both arms. The rod is transversely mounted in the follower. In order to avoid premature locking, each arm has a chamfered surface on a top wall to force the rod out of engagement with the arm during upward movement of the arms, to protect premature movement of the rod from an unlocked position to a locked position. | 08-18-2011 |
20110197843 | SWITCHABLE ROLLER FINGER FOLLOWER - The finger follower employs two independent lost motion arms and a coupling device that locks both arms. Stops are provided both for the roller axle and for the arm swing. The axle stop and the end stops for the arm swing are positioned on the arm and the outer sidewall of the inner lever. | 08-18-2011 |
20130186358 | ROLLER FINGER FOLLOWER WITH SWIVELABLE VALVE PALLET - A finger follower having an inner and outer body and a torsional lost motion spring acting between the bodies is provided. A roller cam follower is connected to the inner body. The inner body is switchable from a fixed state, in which it moves with the outer body to transfer a cam lift to a valve stem, to a released state, in which the inner body can move relative to the outer body so that the cam lift is not transferred to the valve stem. A separate valve pallet that acts on the valve stem is press fit or otherwise rotationally fixed on a pivot pin connecting the inner and outer bodies. | 07-25-2013 |
20130199480 | INVOLUTE SPRING PALLET COMPONENT FOR A CYLINDER DEACTIVATION SWITCHABLE ROLLER FINGER FOLLOWER - A method of manufacturing spring pallets of a switchable roller finger follower. The method includes the steps of forming the spring pallets of the roller finger follower as a single unit, forming a material web between the spring pallets, and separating the spring pallets apart from each other. Also, an intermediate assembly of the spring pallets of the roller finger follower is disclosed. The intermediate assembly includes a first spring pallet, a second spring pallet, and a material web which extends between the spring pallets, and adjoins the spring pallets together. Further, a method of manufacturing an inner arm of the switchable roller finger follower is disclosed in which the inner arm is formed by sheet metal, preferably by stamping. | 08-08-2013 |
20130206090 | COMBINED OUTER ARM MANUFACTURING FOR SPRING OVER PIVOT THREE ARM SWITCHABLE ROLLER FINGER FOLLOWER - A method of manufacturing outer arms of a three arm spring over pivot switchable roller finger follower. The method includes the steps of forming the outer arms of the switchable roller finger follower as a single unit, forming a material web between the outer arms, and separating the outer arms apart from each other. Also, an intermediate assembly of the outer arms of the three arm spring over pivot switchable roller finger follower is disclosed. The intermediate assembly has a first outer arm, a second outer arm, and a material web which extends between the outer arms, and adjoins the outer arms together. | 08-15-2013 |
20130239919 | THREE ARM FINGER FOLLOWER WITH CAM SWITCHING PROFILE AND COMPRESSION LOST MOTION SPRINGS - A switchable roller finger follower is provided having an inner lever and two separate outer arms mounted at one end to a swing pivot axle that extends through the inner lever. A roller is mounted in the inner lever. The outer arms extend longitudinally along sides of the inner lever and include high lift cam contact surfaces. The inner lever includes a compression spring support extending out from each of the sides. The outer arms each include a corresponding spring support facing the respective spring support of the inner lever. A compression spring is located on each of the sides of the inner lever between the corresponding spring supports. A coupling arrangement is located between the inner lever and the outer arms which in a locked position, locks the outer arms in position on the inner lever, and in an unlocked position, allows the outer arms to pivot. | 09-19-2013 |
20130284135 | NESTED LOCKING MECHANISM FOR SWITCHABLE ROLLER FINGER FOLLOWER - A finger lever is provided for a valve train of an internal combustion engine. The finger lever comprises an inner lever, at least one arm pivotally coupled to the inner lever, and a coupling device operatively displaceable to control movement of the at least one arm relative to the inner lever. The coupling device includes a slide and a piston disposed in a longitudinal bore of the inner lever, the piston having an entraining slot in which at least part of the slide is received, and at least one biasing member arranged to bias the piston relative to the inner lever. The slide is constructed to be displaced in a coupled position or an uncoupled position. In the coupled position the slide is entrained by the at least one arm, and in the uncoupled position the slide is not entrained by the at least one arm. | 10-31-2013 |
20130284136 | NESTED LOCKING MECHANISM FOR SWITCHABLE ROLLER FINGER FOLLOWER - A finger lever is provided for a valve train of an internal combustion engine. The finger lever comprises an inner lever, at least one arm pivotally coupled to the inner lever, and a coupling device operatively displaceable to control movement of the at least one arm relative to the inner lever. The coupling device includes a slide and a piston disposed in a longitudinal bore of the inner lever, the piston having an entraining slot in which at least part of the slide is received, and at least one biasing member arranged to bias the piston relative to the inner lever. The slide is constructed to be displaced in a coupled position or an uncoupled position. In the coupled position the slide is entrained by the at least one arm, and in the uncoupled position the slide is not entrained by the at least one arm. | 10-31-2013 |
20130284137 | NESTED LOCKING MECHANISM FOR SWITCHABLE ROLLER FINGER FOLLOWER - A finger lever is provided for a valve train of an internal combustion engine. The finger lever comprises an inner lever, at least one arm pivotally coupled to the inner lever, and a coupling device operatively displaceable to control movement of the at least one arm relative to the inner lever. The coupling device includes a slide and a piston disposed in a longitudinal bore of the inner lever, the piston having an entraining slot in which at least part of the slide is received, and at least one biasing member arranged to bias the piston relative to the inner lever. The slide is constructed to be displaced in a coupled position or an uncoupled position. In the coupled position the slide is entrained by the at least one arm, and in the uncoupled position the slide is not entrained by the at least one arm. | 10-31-2013 |
20140131602 | SOLENOID VALVE PLATE - An electromagnetic hydraulic valve or solenoid having an electric plug, housing, magnetic coil, armature and armature pin, valve body and associated valve seat and valve plate and associated valve seat, the valve plate axially retained, but, freely floating laterally within the housing, such that the valve plate and valve plate seat is movable to align with the valve body and valve body seat. | 05-15-2014 |
20140209048 | SWITCHING ROLLER FINGER FOLLOWER WITH LOCKING MECHANISM - A switching roller finger follower, including: first and second rotatable outer arms; and a locking mechanism including a locking pin with a first outside diameter and first and second ends. The locking mechanism includes first and second locking sleeves: separate from the locking pin; fixedly secured to the first and second ends, respectively; and having second and third outside diameters, respectively, larger than the first outside diameter. The locking pin is displaceable such that: in a locked mode, the first and second locking sleeves contact the first and second outer arms, respectively, to block rotation of the first and second outer arms in a first rotational direction; and in an unlocked mode, the first and second locking sleeves are free of contact with the first and second outer arms, respectively. | 07-31-2014 |
20140331950 | SWITCHING ROLLER FINGER FOLLOWER WITH LOCKING MECHANISM - A switching roller finger follower, including: a housing with a first wall with a first opening, a second wall with a second opening, and an interior space at least partially formed by the walls; first and second outer arms; and a locking pin disposed in the openings and including a longitudinal axis, a body, and first and second protrusions extending radially outward from the body, formed of a same piece of material as the body, and at least one of which is located within the space. A respective portion of at least one of the first or second protrusions is aligned with the first or second wall in a direction parallel to the first longitudinal axis. The locking pin is displaceable such that: in a locked mode, the locking pin blocks pivoting of the arms; and in an unlocked mode, the locking pin is free of contact with the arms. | 11-13-2014 |
20150053160 | SLIDER PAD FOR ROLLER FINGER FOLLOWER - A roller finger follower is provided having a housing and two separate outer arms mounted at one end to a pivot axle that extends through the housing. A roller is mounted in the housing The outer arms extend longitudinally along sides of the housing and include high lift cam contact surfaces. The outer arms having an outer arm body and separately formed longitudinal body, retained on the outer arm body, the longitudinal body including the cam contact surface. The longitudinal body is formed of a high durability material or coated with a suitable coating, the outer arm body formed of a lower grade, lower cost material. | 02-26-2015 |
20150226095 | SWITCHABLE FINGER FOLLOWER WITH COMBINED LOST MOTION SPRING AND HYDRAULIC LASH ADJUSTER CLIP - A switchable roller finger follower including a combined lost motion spring and hydraulic lash adjuster clip is provided. The switchable roller finger follower includes at least one spring having two coiled spring portions. Each of the two coiled spring portions is wrapped around a respective spring holding pin formed on an inner elongated body. Each one of the at least two coiled spring portions includes a first leg and a second leg. The first legs each extend from a respective one of the two coiled spring portions to engage a spring pallet formed on an outer elongated body. The second legs each contact a bottom portion of the inner elongated body in proximity to a socket portion to act as a retainer for retaining a hydraulic lash adjuster to the inner elongated body. | 08-13-2015 |
20150275712 | SWITCHABLE FINGER FOLLOWER WITH NORMALLY UNLOCKED COUPLING ELEMENT - A switchable finger follower having two lift modes for a valve train of an internal combustion engine. The follower includes a primary lever with a valve stem support at the first end and a support recess at the second end. A secondary lever is pivotably mounted to the primary lever at the first end, including a coupling surface. A coupling device is located on the primary lever having a coupling pin moveable between a first locking position, in which the secondary lever is locked to the inner lever, and an unlocked position, in which the secondary lever is pivotable relative to the primary lever. The coupling pin includes a ramp surface that engages the coupling surface, and a locking arrangement locks the coupling pin in the first locking position. | 10-01-2015 |
20150300214 | CAMSHAFT PHASER WITH TWO ONE-WAY WEDGE CLUTCHES - A camshaft assembly, including a camshaft phaser with: stator; rotor including first plurality of circumferentially aligned ramps; and second plurality of circumferentially aligned ramps offset from the first plurality of ramps in a first axial direction; first and second wedge plates radially disposed between the rotor and the stator; and camshaft non-rotatably connected to the rotor. In a drive mode: the stator is arranged to receive first torque and to rotate in a first direction; the assembly is arranged to operate in successive cycles of a first phase followed by a second phase; in the first phase the first wedge plate non-rotatably connects the stator and the rotor while the second wedge plate is rotatable with respect to the stator; and in the second phase, the second wedge plate non-rotatably connects the stator and the rotor while the first wedge plate is rotatable with respect to the stator. | 10-22-2015 |
20160003111 | SWITCHABLE FINGER FOLLOWER WITH LASH ADJUSTMENT SHIM - A switchable finger follower, including an inner lever and an outer lever. The outer lever is mounted for pivoting movement to the inner lever. A coupling device is located on one of the inner or outer levers and has a coupling pin arranged to move between a locking position, in which the inner and outer levers are connected together for movement in an activation direction, and an unlocked position, in which the inner lever is pivotable relative to the outer lever. A coupling projection is located on the other of the inner or outer lever. The coupling pin engages beneath a coupling surface of the projection in the locking position, and a stop surface of the projection contacts a second stop surface on the one of the inner lever or the outer lever. The second stop surface is located on a removable shim that is replaceable for lash adjustment. | 01-07-2016 |
20160076411 | MULTI-POSITIONAL CAMSHAFT PHASER WITH SWITCHABLE ONE-WAY WEDGE CLUTCHES - A camshaft phaser including a rotatable stator arranged to receive torque from an engine, a hub arranged to non-rotatably connect to a camshaft and including first and second pluralities of circumferentially disposed ramps, a first wedge plate including: a first aperture and a third plurality of circumferentially disposed ramps engaged with the first plurality of circumferentially disposed ramps, a second wedge plate including: a second aperture and a fourth plurality of circumferentially disposed ramps engaged with the second plurality of circumferentially disposed ramps, and an engagement assembly including a shaft extending axially through the first and second apertures. For an advance or retard mode, the shaft is arranged to be displaced axially so that the hub is rotatable with respect to the stator in a first or second circumferential direction. | 03-17-2016 |
20160102584 | MECHANICAL LASH CONTROL FOR A SWITCHABLE ROLLER FINGER FOLLOWER - A switchable finger follower, including an inner lever and an outer lever. The outer lever is mounted for pivoting movement to the inner lever. A coupling device is located on one of the inner or outer levers and has a locking pin arranged to move between a locking position, in which the inner and outer levers are connected together for movement in an activation direction, and an unlocked position, in which the inner lever is pivotable relative to the outer lever. A coupling projection is located on the other of the inner or outer lever. The locking pin engages beneath the projection in the locking position, and the locking pin includes a flat at a defined flat height that contacts the coupling surface in the locking position and is selected from a number of locking pins having different flat heights to set a desired mechanical coupling device lash. | 04-14-2016 |