Delphi Technologies, Inc.

General Signal Corporation

Delphi Technologies IP Limited

Dominic Borraccia

Ronald Jay Pierik

Jason M Urckfitz

Natalie G Payne

Timothy M Nieves

Jeffrey S Gambrill

Matthew T Scott

Thomas Huntington Fischer

Michael James Dinkel

David M McCarthy

Alan G Strandburg, Iii

David M Peers

Thomas Howard Lichti

Michael James Fox

Michael E McCarroll

Ian R Jermy

Daniel Richard Cuatt

Jonathan C Everdyke

Walter C Webster

Paul A Armour

Thomas C Durney

John M Krajowsky

A rocker arm includes an outer arm with an outer follower and an inner arm which selectively pivots relative to the outer arm, the inner arm having an inner follower. A lost motion spring biases the inner arm to pivot relative to the outer arm. A lock pin which slides between a coupled position and a decoupled position. A pivot shaft includes a first portion a second portion centered about a first pivot shaft axis and a third portion located between the first portion and the second portion that is centered about a second pivot shaft axis which is parallel to, and laterally offset from, the first pivot shaft axis. The third portion supports the inner arm.

Switchable rocker arm with lash adjustment

A valve plate cover/lead frame unit of a lifter oil manifold assembly used in cylinder deactivation systems to direct engine oil to valve lifters including a body including a pattern of passages that in cooperation with a pattern of passages included in the valve plate form oil galleries for distributing the engine oil, an electrical connector and an electrical lead frame terminating the electrical connector integrated into the body, and a plurality of connector terminals incorporated into the body, wherein the electrical lead frame electrically connects each of the connector terminals with the electrical connector.

Integral valve plate cover/lead frame of a switchable valve deactivating device oil manifold assembly

A lifter oil manifold assembly for variable actuation of engine valves having first (top) and second (valve) plates having portions of oil control and oil exhaust passages formed therein. The assembly further includes a carrier member having an oil supply passage integrated thereby separating the oil supply path from the oil control and oil exhaust path. Further, the assembly includes towers for receiving and positioning the electro-magnetic oil control valves used to control oil flow in the assembly. The towers are molded separate from the carrier and are held in place by the valve plate or are molded integral with the carrier. In another aspect of the invention, oil control valve retention springs are molded integral with either the tower or the oil control valve. In a further aspect of the invention, a combined polymer restrictor/strainer in the oil circuit replaces a prior art metal die-cast restrictor.

Lifter oil manifold assembly for variable activation and deactivation of valves in an internal combustion engine

In a first embodiment of a camshaft phaser, the rotor is split along an equatorial plane thereof, defining first and second rotor portions. A resilient seal is compressively disposed between the rotor portions to prevent leakage therebetween and to urge the rotor vanes against the cover plate and sprocket surfaces to prevent leakage around the vanes. Preferably, the seal includes radial seal elements to seal against the stator wall. Preferably, pressurized hydraulic fluid can enter between the first and second rotor portions and thereby assist the resilient seal in urging the rotor portions apart. In a second embodiment, the rotor is not split, and a resilient seal is provided on at least one axial face of the rotor vanes to seal the rotor vanes against the cover plate and sprocket surfaces.

Apparatus for preventing leakage across rotor vanes in a vane-type camshaft phaser

A vane-type camshaft phaser includes a rotor having a plurality of vanes disposed in a stator having a plurality of lobes, the interspersion of vanes and lobes defining a plurality of alternating valve timing advance and valve timing retard chambers. Each vane and lobe tip is provided with an axially extending groove having an outward expansion of width. A wiper seal element, formed by stamping and folding from a single piece of sheet material, has folded wings that extend under compression into the groove. The spring loading of the wings against the tapered walls of the groove acts to urge the wiper seal element out of the groove and toward the opposing stator or rotor wall, thus ensuring a continuous forced sealing contact of the wiper seal element with the opposing wall and the groove walls during operation of the camshaft phaser.

Rotor and stator seals for a vane-type camshaft phaser

A vane-type camshaft phaser for varying the timing of combustion valves in an internal combustion engine includes a seat formed in the sprocket at the appropriate position of intermediate rotation and a locking pin slidably disposed in a vane of the rotor for engaging the seat to lock the rotor at the intermediate position. A bias spring system disposed on a cover plate urges the rotor toward the locking position from any position retarded of the locking position. A first spring system embodiment comprises a pair of compression spring assemblies. A second spring system embodiment comprises an internal torsion spring. In each embodiment, the phaser may be assembled without having the spring system coupled to the rotor, thereby overcoming a rotor cocking problem inherent in prior art phasers, assuring reliable mounting of an assembled phaser onto an engine camshaft.

Vane-type cam phaser having bias spring system to assist intermediate position pin locking

In a vane-type camshaft phaser, one vane extends over a much larger internal angle than the other two vanes. Because of its size and strength, the large vane is the vane designated for contact with the stator. The other vanes and lobes have extra clearance to prevent contact regardless of rotor position. In one embodiment, a first surface of the large vane engages a surface of a first adjacent lobe at one extreme rotor rotation, and a second surface of the large vane engages a surface of a second adjacent lobe at the opposite extreme of rotation. The contact surfaces of the lobes and the vane may be equipped with hardened wear pads. One or more wear pads may be machined to provide a desired rotor displacement angle.

Camshaft phaser having designated contact vane

A combined oil filtration and metering assembly for filtering and metering oil in an oil gallery, such as in a Lifter Oil Manifold Assembly of an internal combustion engine. The filtration and metering assembly includes a filtration element at an oil entrance leading to an internal chamber having a metering orifice as an outlet to a downstream portion of the oil gallery. Preferably the metering orifice has a diverging exit cone. Preferably, the assembly replaces directly a prior art metering valve in a LOMA socket without requiring retooling of the LOMA top plate. The assembly may be readily formed by molding of the filtration element into the oil entrance in an injection overmolding process.

Oil filter having an integral metering orifice for a valve lifter oil manifold assembly

A vane-type camshaft phaser for varying the timing of combustion valves in an internal combustion engine. The phaser includes a seat formed in the sprocket at the appropriate position of intermediate rotor rotation and a locking pin slidably disposed in a vane of the rotor for engaging the seat to lock the rotor to the stator at the intermediate position. A bias spring system disposed on a cover plate urges the rotor toward the intermediate locking position from any position retarded of the locking position but does not engage the rotor during valve timing-advance motion thereof from the intermediate locking position.

A target wheel for a camshaft phaser stamped and drawn from sheet metal stock. The hub region of the target wheel may be drawn such that it extends through the phaser cover plate and seals directly against the face of the rotor, allowing a shorter cam bolt and resulting in reduction in mass and cost of the phaser. Alternatively, a separate hub is formed and then attached to a simplified stamped and drawn target wheel, or a target wheel hub is formed integrally with the rotor and extends through the cover plate to mate with a simplified stamped and drawn target wheel. Preferably, the hub is formed having a neck extending through a central opening in the target wheel, which neck is peened over during assembly to secure the wheel to the hub.

Stamped target wheel for a camshaft phaser

A target wheel/rotor pre-assembly for a camshaft phaser. A phaser rotor includes a central bore. A target wheel axial extension having a plurality of barbs is entered into the bore to fix the target wheel to the rotor, both axially and rotationally, prior to assembly of the rotor into a phaser stator during manufacture of the phaser. Simple gauge blocks or a fixture can be used to index the target wheel to the rotor such that all such rotor/wheel subassemblies are substantially identical, to a high degree of precision. Alternatively, the axial extension may be formed without barbs, the extension inserted into the rotor bore, and then the extension immobilized as by stamping of the barbs, tack welding, or the like. For another example, the axial extension may be formed as a separate intermediate barbed retainer that engages both the rotor bore and the target wheel.

Target wheel pre-assembly for a camshaft phaser

In a prior art camshaft phaser having a biasing spring, the stator spring tang is anchored to a first binder screw passing through a stator lobe adjacent the locking pin-containing vane of the rotor, and the rotor spring tang is anchored to a first target wheel protrusion opposite such a vane. In an improved installation method in accordance with the invention, during assembly of an improved phaser the biasing spring is rotated about 180&#xb0; from the prior art position such that the stator spring tang is anchored to a first fixed stop generally opposite the pin-containing vane, and the rotor spring tang is anchored to a second fixed stop generally adjacent such a vane.

Camshaft phaser bias spring mechanism

A fast-acting rotor-locking mechanism for a vane-type camshaft phaser. A straight-sided locking pin is disposed in a bushing in the rotor and is urged into a sprocket well by a return spring. A pad disposed at the bottom of the well is a travel stop for the pin. When the pin is fully seated against the pad, the pad covers a portion of the end of the pin. The uncovered portion of the pin end, exposed to oil pressure for unlocking the pin when it is fully seated, is decreased over the prior art pin, permitting use of a lighter locking spring having a lower spring rate. Because of the lighter locking spring, the pin accelerates more rapidly and unlocks significantly faster than in a comparable prior art phaser.

Fast-acting lock pin assembly for a vane-type cam phaser

A torque bias coil spring for a camshaft phaser disposed on the outside of a cover plate for the rotor chamber and connected between the stator and rotor for angularly biasing the rotor. A rotor extension, such as a sleeve for a locking pin mechanism or a target wheel unit, extends from the rotor chamber through an opening in the cover plate for engaging a first spring tang. The second tang of the spring is engaged by a phaser binder bolt. The spring thus is able to follow the rotary motion of the rotor within the rotor chamber and to bias the rotor toward a predetermined rotational extreme.

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Spencerport, NY, United States of America

Dominic Borraccia