Gt Technologies

Ford Global Technolgoies, LLC

John Edmund Brune

Scott P Smith

Luke Gossman

Dennis Landis

Mark Alan Zagata

Fang Shui

Eva Barber

Chip Hartinger

Ira R Stoody

Tyler Austin Hamm

Terence William Roberts, Jr

Mark Meyers

Scott Paul Smith

A rocker arm assembly including a rocker body having an upper wall arranged above a pivot axis, two ears extending from opposing sides of the upper wall and defining a pivot bore coaxial with the pivot axis, and a pad end wall and a socket end wall each extending from the upper wall and the ears. A pad having a convex pad surface is formed on the pad end wall for engaging a valve and a socket having a concave socket surface is formed on the socket end wall for engaging a pushrod. The rocker arm assembly further includes a trunnion body and a bearing, each disposed in the pivot bores and for facilitating pivoting movement between the rocker body and the trunnion body.

Rocker arm assembly

A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly comprises a tappet body having a shelf and defining a pair of apertures, and a follower assembly. The follower assembly has a shaft, a first bearing and a second bearing, each supported on the shaft for engaging the camshaft lobe. A beam is further supported on the shaft between the first and second bearings and has a platform for engaging the fuel pump assembly. The shaft is disposed in the pair of apertures of the tappet body and the beam is arranged in the tappet body and engaged with the shelf.

Tappet assembly for use in a high-pressure fuel system of an internal combustion engine

A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly comprises a tappet body defining a pair of apertures and a pair of seats, and a follower assembly. The follower assembly has a shaft, a first bearing and a second bearing, each supported on the shaft for engaging the camshaft lobe. An intermediate element is further supported on the shaft between the first and second bearings and has a platform for engaging the fuel pump assembly. The intermediate element is at least partially disposed in the pair of seats of the tappet body and the shaft is disposed in the pair of apertures of the tappet body.

A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly comprises a tappet body defining a pair of apertures and at least one seat, and a follower assembly. The follower assembly has a shaft, a first bearing, and a second bearing, each supported on the shaft for engaging the camshaft lobe. An intermediate element is further supported on the shaft between the first and second bearings and has a platform for engaging the fuel pump assembly. The intermediate element is at least partially disposed in the at least one seat of the tappet body and the shaft is disposed in the pair of apertures of the tappet body.

A retention device for interconnecting a lash adjuster and a finger follower that supports a bearing of a valve actuating mechanism for an internal combustion engine, wherein the retention device includes a body having a lower member, an upper member spaced from the lower member, and an intermediate member interconnecting the lower and upper members. The lower member includes an aperture that is adapted to be received in a groove of the lash adjuster. The intermediate member is secured to the finger follower such that the retention device interconnects the lash adjuster and the finger follower. The upper member includes a bearing retention mechanism that limits movement of the bearing of the finger follower and retains the bearing relative to the finger follower prior to mounting the finger follower and lash adjuster as a part of the valve actuating mechanism of the internal combustion engine.

Valve actuating mechanism having combined bearing and hydraulic lash adjuster retention device

A finger follower for use in an internal combustion engine valvetrain having a valve, a lash adjuster, and a camshaft having a lobe. The finger follower includes a shaft, a bearing rotatably supported by the shaft for engaging the lobe. A body is provided with a pad for engaging the valve, a socket spaced from the pad for engaging the lash adjuster, and walls disposed between the pad and the socket. A slot is formed in each wall for supporting the shaft, and each has a respective pair of eccentric arc-shaped bearing surfaces arranged to allow the shaft to rotate within the slots and to move along the slots to facilitate alignment of the bearing with respect to engagement with the lobe independent of alignment of the pad with respect to engagement with the valve and of alignment of the socket with respect to engagement with the lash adjuster.

Finger follower assembly for use in a valvetrain of an internal combustion engine

An assembly for a valvetrain having a valve, a lash adjuster, and a lobe. The assembly includes a shaft, a bearing supported by the shaft for engaging the lobe, and a rocker having a pad for the valve and a socket for the lash adjuster. Walls are disposed between the pad and socket, have inner and outer wall surfaces, and define a valley for the shaft. Upwardly-opening arc-shaped bearing surfaces are disposed longitudinally between the pad and socket spaced laterally from each other and support the shaft when the bearing engages the lobe. A retention element formed in each wall with a depressed portion spaced from the outer wall surface and a lip portion arranged under the depressed portion extends into the valley above the bearing surfaces such that the shaft is prevented from moving out of the valley in absence of engagement between the bearing and the lobe.

Rocker arm assembly and method of forming retention elements in a rocker arm

A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly includes a bearing assembly having a shaft and a bearing rotatably supported by the shaft for engaging the lobe. An intermediate element has a shelf for engaging the fuel pump assembly, and a pair of arc-shaped bearing surfaces rotatably engaging the shaft when the bearing engages the lobe and the shelf engages the fuel pump assembly. The intermediate element includes a pair of lock apertures. The bearing assembly further includes a pair of shields supported on the shaft of the bearing assembly with the bearing interposed between the shields. The shields include a pair of opposing fingers for engaging the lock apertures so as to substantially retain the bearing assembly to the intermediate element and so as to substantially retain the shaft of the bearing assembly within the annular body in absence of engagement between the bearing and the camshaft lobe.

Tappet assembly for use in an internal combustion engine high-pressure fuel system

A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly includes a bearing assembly having a shaft and a bearing rotatably supported by the shaft for engaging the lobe. An intermediate element has a first aperture, a shelf for engaging the fuel pump assembly, and a pair of arc-shaped bearing surfaces rotatably engaging the shaft when the bearing engages the lobe and the shelf engages the fuel pump assembly. An annular body has a second aperture and at least one stop member abutting the intermediate element to align the first aperture with the second aperture. An anti-rotation clip is disposed so as to extend through the apertures and cooperates with the stop member to substantially prevent rotational and axial movement of the intermediate element with respect to the body.

A rocker arm assembly for a valvetrain having a valve, a lash adjuster, and a camshaft lobe. The rocker arm assembly includes a shaft, a bearing rotatably supported by the shaft for engaging the lobe, and a rocker arm. The rocker arm has a pad for engaging the valve, and a socket for engaging the lash adjuster. A pair of walls are disposed between the pad and socket and define a valley for accommodating the shaft. A pair of upwardly-opening arc-shaped bearing surfaces are disposed longitudinally between the pad and the socket and are spaced laterally from each other. The bearing surfaces rotatably support the shaft when the bearing engages the lobe. A pair of retention elements extend from the walls into the valley above the bearing surfaces such that the shaft is prevented from moving out of the valley in absence of engagement between the bearing and the lobe.

Rocker arm assembly for use in a valvetrain of a cylinder head of an internal combustion engine

A locator for use in a valvetrain of a cylinder head of an internal combustion engine having a valve substantially concentrically aligned with both a valve spring and a support, the support at least partially extending into the valve spring. The locator includes an annulus seat that supports the valve spring. The locator further includes a tapered ring operatively attached to the seat that has a tapered inner surface, for at least partially accommodating the support of the valvetrain therein, and a tapered outer surface, for at least partially engaging and concentrically aligning with the valve spring. The locator also includes a plurality of radially-spaced lobes. The lobes are disposed on the inner surface of the ring and at least partially engage the support such that the locator substantially concentrically aligns the valve spring with the valve and the support.

Locator for use in a valvetrain of a cylinder head of an internal combustion engine

A rocker arm assembly for translating force between an intermediate member in communication with a camshaft of an internal combustion engine and a valve supported in a cylinder head of the engine. The rocker arm assembly includes a tube member and an arm. The tube member has first and second ends, a substantially cylindrical inner surface, and a tapered outer surface. The arm has a body extending between a pad for engaging the valve of the engine, and a socket for engaging the intermediate member of the engine. The body also has a tapered bore disposed between the pad and the socket. The tapered bore of the body of the arm cooperates with the tapered outer surface of the tube member so as to define a lock for constraining the arm to the tube member at a predetermined position between the first end and the second end.

Rocker arm assembly and valvetrain assembly incorporating the same

A valvetrain for translating force and oil between a valve and intermediate member of an engine, including a rocker, a shaft, and a recess. The rocker has an inner surface, a pad for engaging the valve, a socket for engaging the intermediate member, a socket port defined in the surface, and a socket channel extending from the socket port to the socket. The shaft has a bearing surface for supporting the rocker, a channel spaced from the bearing surface, a feed port in the bearing surface, and a feed channel extending from the feed port to the channel. The rocker rotates between: closed, with the socket port and feed port aligned; and open, with the socket port spaced from the feed port. A recess is disposed in the bearing surface adjacent to the feed port and extends to a base aligned with the socket port when the rocker is open.

Valvetrain assembly

A retention device for a valve actuating mechanism to secure a finger follower and lash adjuster together includes a ring member disposed in a groove of a movable piston of the lash adjuster. The retention device also includes a connecting member having a plurality of legs adapted to engage the finger follower and an intermediate base interconnecting the legs and adapted to be disposed below the ring member and about a portion of the lash adjuster to effect a free movement of the connecting member in all pivoted positions of the finger follower.

Retention device for valve actuating mechanism

The present invention comprises an oil system for supplying and controlling oil flow in an internal combustion engine having a variable camshaft timing (VCT) device, comprising a pressurized oil supply providing lubricating oil to the engine and the variable cam timing device and an oil circuit connecting the oil pump with the VCT and a main oil gallery of the engine via a valve apparatus. The valve apparatus responds to oil pressure near the outlet of the oil pump so that oil flows to the main oil gallery when oil pressure is above a predetermined pressure. When the VCT requests oil flow, oil pressure in the system drops. If the pressure drops below the predetermined pressure, the valve apparatus causes a reduction in flow to the main gallery.

Growing community of inventors

Stockbridge, MI, United States of America

John Edmund Brune