Matches 1 - 50 out of 104 1 2 3 >
Match Document Document Title
7614370 Vane-type cam phaser having bias spring system to assist intermediate position pin locking  
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...
7614372 Bias spring arbor for a camshaft phaser  
A torque bias coil spring for a camshaft phaser disposed in an annular well formed in the phaser rotor and having a central arbor for supporting the spring. The radius of the central arbor is such...
7475659 Device combustion engine  
A device for controlling valve movements in an internal combustion engine includes a rotating camshaft having a cam curve, the camshaft being designed, via a rocker arm, to interact with a valve...
7165521 Variable valve timing control device  
A variable valve timing control device includes a rotational shaft, a rotation transmitting member assembled around the rotational shaft, and a vane assembled to one of the rotational shaft and the...
7140337 Valve gear mechanism  
In a valve gear mechanism of an internal combustion engine, there is provided a valve opening and closing a combustion chamber, a spring device which generates a force pressing the valve toward a...
7044433 Valve spring mechanism  
A valve spring mechanism is provided which is suitable for use with the inlet or exhaust valves of an internal combustion engine, and includes a valve head and a valve stem. The mechanism includes...
6978748 Hydraulically controlled actuator for actuating gas exchange valve on the exhaust side of an internal combustion engine  
A hydraulically controlled actuator for actuation of an exhaust-side gas exchange valve of an internal combustion engine, containing a control piston that is displaceable within a cylinder and,...
6938597 Variable spring force intake valve assembly  
Disclosed herein is a variable spring force intake valve for use in two- or four-stroke internal combustion engines. The device comprises an intake valve body and a torsion spring attached to a...
6811143 Valve spring assembly and installation method  
A valve spring assembly includes a hollow valve spring plate and a locking element retained by a retainer both received in the interior of the hollow valve spring plate. The locking element is...
6745738 Pneumatic valve return spring  
A valve spring device using pressurized gas for use in biasing a reciprocating valve which moves between a seated position and open position. The device features a static housing having a static...
6725820 Valve-operating mechanism in engine  
A valve-operating mechanism includes cam followers carried on an engine body 1 with their tip ends being in sliding contact with the cam, rocker arms integrally connected to the cam followers and...
6601552 Hydraulically controllable globe valve  
A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end...
6564764 Switchable tappet for directly transmitting a cam lift onto a tappet push rod  
A switchable tappet for directly transmitting a cam lift onto a tappet push rod, includes a housing having a push rod distal end which is formed with a ramp surface for contact by a cam. An inner...
6532925 Stamped valve spring and retainer  
A bias element which urges the valves in an internal combustion engine into their closed positions and includes a pair of arms and a bight portion connecting the two arms. Each arm has an aperture...
6491012 Rocker arm assembly having a spring clip valve guide  
A rocker arm assembly having a main body with side walls and a push rod contacting portion spaced away from a valve stem contacting portion is disclosed. The valve stem contacting portion further...
6460495 Switchable support element  
In a switchable support element ( 1 ) for a valve train of an internal combustion engine, the lost motion spring ( 8 ) of the valve train is made as a torsion spring. This spring is arranged...
6457447 Valve timing adjusting device  
A seal plate partitions a sectorial space which houses a vane and a circumferential groove which houses a torsion spring, so that the sectorial space is formed to prevent the communication between...
6439184 Valve timing adjusting system of internal combustion engine  
An effective range of urging force of an assist spring is between a maximum retarded phase and a predetermined phase of a camshaft, a vane rotor and vanes. The predetermined phase is equal to an...
6427654 Device for changing the control timing of the gas exchange valves of an internal combustion engine, in particular a hydraulic camshaft adjustment device of the rotary piston type  
A hydraulic camshaft-adjusting device of the rotary piston type that includes of a drive gear ( 2 ) directly connected to a crankshaft and an impeller that is directly connected to a camshaft ( 3...
6418892 Adjustable device for valve control and method for adjusting same  
The invention concerns a valve controlling device with linear displacement along an axis comprising a number of actuators equal to that of the valves. Each actuator has a ferromagnetic blade fixed...
6415751 Gas exchange valve control for internal combustion engines with an electromagnetic actuator, equipped with gas springs  
A gas exchange valve control for internal combustion engines includes an electromagnetic actuator equipped with gas springs. The gas exchange valve control has an armature, which drives the gas...
6405695 Valve timing adjuster for internal combustion engine  
A torsion coil spring is installed in a circle groove of a chain sprocket. Both ends of the coil spring are bent in a radially outward direction. The first bent end is fit to a fixed pin protruding...
6401677 Cam rocker variable valve train device  
A variable valve train device for installation in an internal combustion engine to controllably vary the intake valve lift, open duration, and timing. A rotary camshaft has a cam lobe for rotation...
6394416 Device for operating a gas exchange valve  
In a device for operating a gas exchange valve with a hydraulic play compensating element of an internal combustion engine, which device includes an electromagnetic actuator having spaced valve...
6382153 Partial internal guide for curved helical compression spring  
A variable valve actuating comprising a spring guide for use with a curved spring includes an elongate, curved guide member having a centerline. The centerline has a centerline curvature that is...
6311654 Valve timing adjusting device  
A seal plate partitions a sectorial space which houses a vane and a circumferential groove which houses a torsion spring, so that the sectorial space is formed to prevent the communication between...
6305336 Electromagnetic driving device of engine valve for internal combustion engine  
An electromagnetic driving device of engine valve for internal combustion engine comprising an electromagnetic deriving mechanism includes a first and second electromagnets positioned opposite each...
6302069 Cam activated electrically controlled engine valve  
This invention describes an engine valve control responsive to electrical signals from a controller to open and close a valve. Power to move the valve comes from a camshaft. A disabler spring is...
6302068 Fast acting engine valve control with soft landing  
This invention describes an engine valve control responsive to electrical signals from a controller to open and close valves. Power to move the valves comes from a conventional camshaft. A disabler...
6298812 Valve driving apparatus provided in an internal combustion engine  
A valve driving apparatus for driving an intake and an exhaust valve uses electromagnetic force and is provided in an internal combustion engine. Each intake and exhaust valve is movable between an...
6289858 Coupling device for connecting an electromagnetic actuator with a component driven thereby  
An electromagnetic actuator for operating a driven component includes first and second electromagnets having respective first and second pole faces oriented toward one another and defining a space...
6279524 Electromagnetic actuator having a pneumatic dampening element  
An electromagnetic actuator for operating a driven member includes an electromagnet having a yoke provided with a pole face and a coil supported by the yoke and adapted to be supplied with electric...
6276321 Cam phaser having a torsional bias spring to offset retarding force of camshaft friction  
A vane-type camshaft phaser wherein a coil spring under torsional compression or extension is disposed coaxially within an annular cavity formed in either the cover plate or back plate. A first end...
6273045 Valve spring retainer-enlarged slots  
A valve spring retainer (30) for operatively retaining a return spring (28) on a stem (20) of a poppet valve in an internal combustion engine. The retainer (30) includes a retainer flange (50)...
6260522 Device for actuating a gas exchange valve having an electromagnetic actuator  
In a device for actuating a gas exchange valve of an internal combustion engine, which actuating device includes an electromagnetic actuator and is floatingly supported on the cylinder head so as...
6247432 Engine valve assembly for an internal-combustion engine, including an electromagnetic actuator  
An engine valve assembly for an internal-combustion engine includes an engine valve having open and closed positions and a first oscillating mass; a closing spring connected to the valve for urging...
6230673 Solenoid-operated valve for internal combustion engine  
A solenoid-operated valve for use in an internal combustion engine has a valve body movable upwardly for closing an exhaust or intake passage and movable downwardly for opening the exhaust or...
6199843 Anti-friction helical spring assembly to prevent one end of a spring from rotating during expansion or compression of the spring  
A spring assembly 12 for an electromagnetic actuator 10 is provided. The actuator 10 has an armature 18 mounted for movement between two electromagnets 14 and 16 and a shaft 22 operatively...
6170450 Hydraulic tappet with controlled lift loss  
A hydraulic tappet (5) comprises an inverted cup-shaped element with an upper disk (51), welded to a cylindrical body (52) of the tappet which is internally provided with a flange (54), forming a...
6083140 Pneumatic valve spring system having a single air compressor to also supply air actuated accessories  
An internal combustion engine having an engine camshaft driven air compressor. The air compressor supplies air under pressure through separate regulated and controlled circuits to air springs for...
6076490 Electromagnetic assembly with gas springs for operating a cylinder valve of an internal-combustion engine  
A combination of a cylinder valve of an internal-combustion engine with an electromagnetic assembly for operating the valve. The electromagnetic assembly includes an electromagnetic actuator having...
6062181 Arrangement for an electromagnetic valve timing control  
An arrangement for an electromagnetic valve timing gear has an armature plate which can be adjusted between two end positions and which is held in the end positions by a solenoid system having...
6039016 Valve timing control device  
A valve timing control device incorporates a cam shaft rotatably assembled within a cylinder head of an engine, a rotational transmitting member mounted around the peripheral surface of the cam...
5996539 Method for affecting the mixture formation in cylinders of piston-type internal combustion engines by varying the valve strokes  
A method for actuating an electromagnetic actuator for a cylinder (gas exchange) valve of a piston-type internal combustion engine, wherein the actuator has two spaced electromagnets and an...
5992363 Valve spring in an internal combustion engine  
A valve spring is used in a valve operating mechanism for moving a poppet valve up and down in an internal combustion engine of an automobile. The terminal end of the uppermost portion of the valve...
5743225 Valve system for engine  
A valve system for an engine comprises a plurality of intake or exhaust valves, adapted to be driven by cams of which the profiles are different from each other to make maximum valve lifts of the...
5664527 Pneumatic valve recoil system for internal combustion engines  
A pneumatic valve recoil system includes a piston that is unitary with the stem of a valve and which slides in a cylinder, such that the piston, valve stem, and cylinder cooperate to form a chamber...
5664531 Device for adjusting valve duration using external air supply  
An improved device for adjusting a valve lift using external air supply, includes an operating chamber with a piston, and inner and outer valve spring seats with wax whereby in a low speed vehicle,...
5662075 Universal valve lifter block and cap for motorcycle engines  
A universal valve lifter block and cap assembly for motorcycle engines. The valve lifter block is configured to accept several different caps. One of the caps which may be accepted is configured to...
5586529 Pneumatic engine valve spring assembly  
Pneumatic valve spring members (10) provide replacement for mechanical springs used to seat engine valves in internal-combustion engines. A valve guide (16) sits atop the engine head 40, allowing...
Matches 1 - 50 out of 104 1 2 3 >