Abstract: The variable valve timing mechanism includes a housing, a rotor rotatably supported within the housing, and a lock pin. The housing includes a plurality of fluid chambers one of which includes a lock bore. The rotor includes a central portion and a plurality of vanes extending radially from the central portion. Each of the vanes extends into the fluid chambers of the housing to define an advanced fluid chamber and a retarded fluid chamber. One of the plurality of vanes includes a pin bore. The lock pin includes a shank section and an insertion section. The insertion section includes a nonlinear outer side profile. The lock pin is slidably received within the pin bore between an unlocked position and a locked position in which the insertion section of the lock pin is received within the lock bore of the housing thereby prohibiting relative rotation between the housing and the rotor.

Abstract: An engine assembly may include an engine structure, a first valve, a first valve lift mechanism and a first camshaft. The engine structure may define a first combustion chamber and a first port in communication with the first combustion chamber. The first valve may be located in the first port and the first valve lift mechanism may be engaged with the first valve. The first camshaft may be rotationally supported on the engine structure and may include a first double lobe engaged with the first valve lift mechanism. The first double lobe may define a first valve opening region including a first peak and a second valve opening region including a second peak rotationally offset from the first peak.

Abstract: In an internal combustion engine using poppet type valves, a center pivot rocker arm is moved through a specific path wherein the roller in contact with a cam is moved to alter the phasing of the valves or injectors in the engine. Depending on the interface between the valve or injector and the rocker arm, the rocker ratio of the rocker arm may be altered, giving a change in lift as well. By positioning a control arm at desired points on either side of a centered position, and rotating the control arm about its own pivot point via an arm actuator, phase change is achieved. The arm actuator controls the location of the control arm and thus the timing of the valve or injector relative to the rotation of the cam. Advanced, centered, and retarded phase change is possible depending upon the movement of the control arm.

Abstract: A camshaft adjuster arrangement, which has a stator, a rotor, and a pressure accumulator, which is controlled by control vanes.

Abstract: The rocker arm assembly has an anti-inversion part that prevents a support pin from inverting, ensuring proper orientation of the support pin, on which a rocker arm is rotatably mounted, is maintained. The anti-inversion part can be a washer, a plate, a plug, or a sleeve. The washer, which has a flat face and a curved face, is intended for use with a cylindrical support pin which matches the curved face of the washer. The plate can include various combinations of tabs, flanges, and/or protrusions that extend in different directions. The plug can resemble any desirable shape, and is removed prior to final assembly. The sleeve can be hollow and is removable.

Abstract: A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft.

Abstract: A hydraulic control system includes an oil control valve to control oil flow within a valvetrain. The control valve varies the flow rate to actuate an engine component from a first position to a second position based upon fluid pressure from the control valve. Varying the flow rate through the control valve includes increasing the flow rate through the control valve to increase the pressure to a first level to actuate the engine component to the first position. After the engine component is actuated, the flow rate through the control valve is maintained at a level sufficient to maintain the engine component in the first position. To actuate the engine component to the second position the flow rate through the control valve is then decreased. The fluid flow rate through the control valve is then maintained at a level sufficient to maintain the engine component in the second position.

Abstract: A valve timing control apparatus includes a linear solenoid having a coil, a casing, a needle, a pair of cylindrical stators and a cylindrical spacer. The pair of cylindrical stators oppose with each other through an air gap in an axis direction. The pair of stators and the needle form a magnetic circuit so as to drive the needle to reciprocate. The cylindrical spacer fits with an outer circumference side of the pair of stators so as to restrict a short circuit from being generated in the magnetic circuit between the pair of stators. The spacer defines a discharge passage that connects the air gap to a discharge port of the casing.

Abstract: In an internal combustion engine using poppet type valves, a center pivot rocker arm is moved through a specific path wherein the roller in contact with a cam is moved to alter the phasing of the valves or injectors in the engine. Depending on the interface between the valve or injector and the rocker arm, the rocker ratio of the rocker arm may be altered, giving a change in lift as well. By positioning a control arm at desired points on either side of a centered position, and rotating the control arm about its own pivot point via an arm actuator, phase change is achieved. The arm actuator controls the location of the control arm and thus the timing of the valve or injector relative to the rotation of the cam. Advanced, centered, and retarded phase change is possible depending upon the movement of the control arm.

Abstract: OBJECT: To provide a compact phase varying device for an automobile engine, adapted to vary the relative phase angle between the crankshaft of the engine and the camshaft of the device over a wider range than that of conventional device. MEANS FOR ACHIEVING THE OBJECT: The phase varying device has: a drive rotor driven by the crankshaft of the engine; a first control rotor rotatable relative to the drive rotor under the action of a torque means; and a phase angle varying mechanism operably coupled to the first control rotor in rotational motion relative to the first control rotor, the drive rotor and first control rotor rotatably supported by a camshaft of the phase varying apparatus, the phase varying device adapted to vary the phase angle of the camshaft relative to the crankshaft by varying the phase angle of the camshaft relative to the drive rotor.

Abstract: A roller seating device has a hollow-cylindrical element (1) in which a roller (4) is received in seats (8, 10) perpendicular to a center axis (6) of the hollow-cylindrical element (1). A securing element (12) is configured and arranged to couple in a form-fit to the hollow-cylindrical element (1) in the interior (14) of the hollow-cylindrical element (1) in a direction that is axial and rotatory with respect to the center axis (6) of the hollow-cylindrical element (1) and in such a manner as to fix the roller (4) on its faces (16, 18) axially to the center axis (6) of the roller (4).

Abstract: A cam phaser assembly may include a stator assembly, a rotor assembly, and a lock assembly. The stator assembly may be rotationally driven by an engine crankshaft. The rotor assembly may be engaged with the stator assembly and fixed for rotation with an engine camshaft. The rotor assembly may include a radially extending vane located within a recess of the stator assembly to define advance and retard chambers receiving pressurized fluid to rotationally displace the rotor assembly. The lock assembly may be engaged with the stator assembly and the rotor assembly during first and second operating conditions. The lock assembly may include a lock pin mechanically securing the rotor assembly in a rotationally advanced position relative to the stator assembly during the first operating condition and mechanically securing the rotor assembly in a rotationally retarded position relative to the stator assembly during the second operating condition.

Abstract: A camshaft phaser includes a housing with a harmonic gear drive unit disposed therein. The harmonic gear drive unit includes a circular spline and a dynamic spline, a flexspline disposed radially within the circular spline and the dynamic spline, a wave generator disposed radially within the flexspline, and a rotational actuator connectable to the wave generator. One of the circular spline and the dynamic spline is fixed to the housing. A hub is rotatably disposed radially within the housing and attachable to the camshaft and fixed to the other of the circular spline and the dynamic spline. An anti-rotation means is provided for temporarily fixing the circular spline to the dynamic spline in order to prevent relative rotation therebetween when the hub is being attached to the camshaft. The anti-rotation means prevents damage to the harmonic gear drive unit while the camshaft phaser is being installed onto the camshaft.

Abstract: A camshaft arrangement for a motor vehicle engine has a hollow outer shaft and an inner shaft supporting inner shaft cams. The inner shaft cams are non-rotatably attached to the inner shaft by at least one connection element that protrudes with clearance through an aperture in the outer shaft and is attached to the respective inner shaft cam which is rotatably mounted on the outer shaft. When inserted into a receiver in the inner shaft, a portion of the connection element protrudes out of the receiver, and the protruding portion is at least partially inserted into an aperture located at the joint diameter of the inner shaft cam. This aperture is open at least towards an end face of the inner shaft cam. The protruding portion has at least two opposite-lying side surfaces lying with an interference fit against corresponding inner surfaces of the aperture of the inner shaft cam.

Abstract: The present invention relates to a cam drive (1) having a camshaft and having cams (18, 18?)arranged thereon and having at least one rocker arm (3) which has a cam follower (2) and which is operatively connected by means of its first arm (4) to a plunger-like bearing (5) and by means of its second arm (6) to at least one gas exchange valve (7) of an associated cylinder. The cam drive (1) also has a device (10) for varying the lift of the at least one gas exchange valve (7). Here, it is essential to the invention that the device (10) is embodied as a clutch device which acts between the plunger-like abutment (5) and the rocker arm (3, 3?, 3?)and which has an actuating element (12) which is mounted so as to be rotatable about an axis (13) of the plunger-like abutment (5) at least between two positions, wherein a valve lift in a first, coupled position of the actuating element (12) is varied in comparison with a second, decoupled position.

Abstract: There is provided an actuator device for a variable valve apparatus. The variable valve apparatus has a control shaft to vary operation characteristics of an engine valve by an axial movement thereof. The actuator device has a rotatable screw shaft, a movable member axially movable with rotation of the screw shaft and a transmission mechanism unit that converts an axial movement of the movable member to the axial movement of the control shaft. An amount of the axial movement of the movable member is larger than an amount of the axial movement of the control shaft.

Abstract: A method, device, and control unit for controlling an actuator in open loop, particularly for a valve, preferably for a gas-exchange valve of an internal combustion engine, having at least one control valve for opening the valve and one control valve for closing the valve, each of the control valves being capable of being driven by at least one drive pulse whose duration determines a position on the positioning travel of the valve. The valve is opened/closed in one lift and/or a plurality of partial lifts and at least one drive pulse is assigned to each lift and/or each partial lift, and the valve is assigned at least one transducer which generates a signal that discloses values of a discrete positioning travel of the valve and of an assigned time and/or of a discrete instant and of an assigned positioning travel. The method for controlling the actuator includes: a. Starting of a drive pulse having a setpoint duration of the drive pulse for opening and/or closing the valve, b.

Abstract: Groups of camshafts (6) are connected to camshaft adjusters (1) via adapters. According to prior art, adaptations to the camshaft adjuster (1) are necessary for different mounting conditions and/or different geometries of camshafts (6). Here, an adapter (32) is provided between camshaft (6) and camshaft adjuster (1), which adapter can then be adapted to different geometries of the camshaft (6) and/or mounting positions. By this, the multiplicity of parts can be reduced.

Abstract: 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, a clip is employed with tabs that interact with end surfaces of the arms so as to prevent premature movement of the rod from an unlocked position to a locked position.

Abstract: A valve timing control device includes a first housing, a vane rotor, a second housing, a sealing plate, a regulating portion and a biasing portion. The sealing plate is interposed between the first housing and the second housing. The biasing portion biases the regulating portion toward the sealing plate. The sealing plate has a recess recessed from a base part toward the second housing at a predetermined position corresponding to the regulating portion in a relative rotation of the vane rotor. The regulating portion regulates the relative rotation of the vane rotor relative to the first housing and the second housing by being fitted with the recess of the sealing plate.