Schaeffler Technologies Ag & Co .Kg

Ina Schaeffler Kg

Roger Meyer

Dirk Heintzen

Jesse Myers

Xuewei Chen

Chuck Chang

Joseph J Moon

Michael Kandolf

Gregory Müller

Jeffrey Balko

A dual independent phaser, including: one only single locking cover; a first phaser section including a first stator, a first rotor, a first plurality of chambers formed by a first rotor and the first stator, and first locking pin non-rotatably engaged with the first rotor and axially displaceable to non-rotatably connect the first rotor and the one only single locking cover; and second phaser section including second stator, a second rotor, a second plurality of chambers formed by a second rotor and the second stator, and second locking pin non-rotatably engaged with the second rotor and axially displaceable to non-rotatably connect the second rotor and the one only single locking cover.

Dual independent phaser with dual-sided locking cover

A control valve for a device for variably adjusting the control times of gas-exchange valves of an internal combustion engine. The control valve has a substantially hollow cylindrical valve housing, a non-return valve and an annular filter. The annular filter is arranged within the valve housing and the non-return valve has a closing body and a spring element.

Control valve for a device for variably adjusting the control times of gas-exchange valves of an internal combustion engine

A control valve for a device to variably adjust control times of gas-exchange valves of an internal combustion engine. The control device has a valve housing and a control piston. The valve housing has an axial cavity with a dividing element arranged in the cavity that separates the cavity into two partial spaces and hydraulically seals the spaces from one another. The dividing element is produced separately from the valve housing and is positionally fixedly fastened in the cavity of the valve housing. The first partial space holds the control piston, and a supply connection is formed in the region of the first partial space. The second partial space has at least one first opening via which pressure medium can be supplied to the second partial space by a pressure medium pump, and at least one second opening by which the second partial space communicates with the supply connection.

A magneto-rheological fluid controlled camshaft phaser is provided having a stator with inwardly directed projections which define working spaces therebetween. The stator is adapted to be connected to the crankshaft via a timing gear and chain. A rotor is located radially inside the stator and is connected to the camshaft. Rotor lugs extend radially outwardly from the rotor into the working spaces, dividing them into first and second chambers on each side of the rotor lugs. A magneto-rheological fluid is located in the chambers, and the chambers on each side of each rotor lug are connected via a clearance space between the radially outer surface of the lugs and the inner surface of the stator located between the projections. The rotor is connected to the camshaft. An electromagnetic assembly is mounted adjacent to the stator and includes at least one electromagnet along with at least one ferrous focusing piece. In one embodiment, a plurality of the electromagnets are axially spaced apart from the working chambers holding the magneto-rheological fluid. In another embodiment the electromagnetic is formed by a coil which is radially spaced apart from the working chambers holding the magneto-rheological fluid. In each case, the magnetic field is passed from the electromagnet(s) and the ferrous focusing piece(s) into the phaser via a small air gap spacing between the electromagnet assembly and the moving camshaft phaser.

Electromagnet mounting and control system for a variable camshaft phaser containing magneto-rheological fluid

A dual independent phasing system (DIPS) phaser assembly for coaxial camshafts having two axially stacked, thin phasing subassemblies which are each conventional vane-cell type phaser assemblies is provided. These phasers are preassembled together as a unit to make one DIPS phaser assembly. The rotor of the rear phaser is attached to the outer camshaft of the coaxial cam, and the rotor of the front phaser is attached to the inner camshaft. The radial force from the timing chain or belt is transmitted to the outer camshaft via a chain ring or pulley connected to the stator of the rear phaser. In order to provide for ease of mounting, the DIPS phaser assembly (including the front and rear phasers) is attached to the outer camshaft via mounting bolts which are passed through openings in the rotor of the front phaser in order to attach the rear phaser rotor to the outer camshaft. A central mounting bolt is used to connect the front phaser rotor to the inner camshaft. A radially stacked DIPS phaser assembly is also provided which offers further reduced axial space requirements.

Dual independent phasing system to independently phase the intake and exhaust cam lobes of a concentric camshaft arrangement

A device () for changing the timing of an internal-combustion engine () is provided that has a camshaft adjuster (), which is supported on a non-rotating bearing journal (). A driving wheel () of the camshaft adjuster () is driven by a crank-shaft () via a first traction mechanism drive (). The rotation of the driving wheel () is transferred via an actuator () to a driven part (), which is arranged so that it can rotate relative to the driving wheel (). Second and third traction mechanism drives () create a drive connection between the driven part () and two camshafts ().

Device for changing the timing of an internal-combustion engine

An internal-combustion engine with a hydraulic device () for rotation angle adjustment of a camshaft () relative to a crankshaft is provided and includes a rotor with an impeller form (), which is rotationally fixed via a central fastener () to the camshaft, and a stator (), which rotates synchronously with a drive wheel () driven by the crankshaft, wherein on both sides of the impeller blades of the rotor, there are pressure chambers, which are each limited by radial walls of the stator () and can be filled with and emptied of hydraulic fluid via a hydraulic system, wherein the hydraulic fluid is guided, on one hand, via an annular gap () between rotor () and the central fastener () and, on the other hand, through generally axial and radial channels into the pressure chambers. Through the use of a rotor () with a groove () running in the circumferential direction and a ring shaped intermediate element () adapted to the device, the internal-combustion engine can be equipped with a device () for adjusting the rotation angle, for which the number and/or arrangement of the axial channels for supplying hydraulic fluid do not agree with those of the camshaft of the internal-combustion engine. This construction enables the use of the device () on many different internal-combustion engines, without expensive adaptations of the device ().

Growing community of inventors

Brighton, MI, United States of America

Roger Meyer