Matches 1 - 50 out of 111 1 2 3 >


Match Document Document Title
8136496 Valve rotator assembly  
A valve rotator for use in an internal combustion engine. The valve rotator including a plurality of retention members, each able to removeably and rotateably couple the stationary housing to the...
8109249 Valve control for a gas exchange valve in an internal combustion engine  
A valve control for a gas exchange valve of an internal combustion engine includes at least one spring element for preloading the valve in an end position and a fixing device for the releasable...
8079339 Reciprocable member with anti-float arrangement  
An exhaust valve arrangement includes a cylinder having a top end, an exhaust conduit connected to the cylinder by an opening in the top end of the cylinder, the opening comprising a valve seat, a...
8069828 Intake valve closing hydraulic adjuster  
A mechanism (40) for enabling an engine cylinder valve (18) to close at various times during engine cycles has a hydraulic actuator (58) and a control valve (60) controlling the hydraulic actuator...
8056520 Valve drive of an internal combustion engine  
A valve drive of an internal combustion engine, which has a reciprocating poppet valve and a spring element which impinges the closed reciprocating poppet valve with force against the action of a...
8042505 Internal combustion engine comprising a variable valve drive  
The invention relates to an internal combustion engine comprising a valve drive which is arranged in the region of the cylinder head and is used to actuate a valve. Said internal combustion engine...
8025039 Valve spring device and valve train of internal combustion engine using the same  
A port is formed in a cylinder head of an engine. The port is opened and closed by a valve. A valve spring device is provided with a first spring and a second spring. The second spring is contained...
7878167 Engine with round lobe  
An engine with intake and exhaust valves that may be controlled with a circular cam lobe is provided. The rotating axis of the circular cam lobe is offset from the physical center of the cam lobe....
7845326 Variable valve lift apparatus  
A variable valve lift apparatus according to an exemplary embodiment of the present invention includes an inner body contacting an input cam, an outer body connected with a valve, a lost motion...
7827952 Variable tappet  
A variable tappet includes a tappet body; a variable portion in the tappet body, configured to open and close a valve; and a control portion to maintain the variable portion in either a first...
7827947 Variable displacement pump, valve timing control device using the variable displacement pump, and valve timing control system using the variable displacement pump, for use in internal combustion engines  
A variable displacement pump including a chamber volume varying mechanism including a moveable member, a first biasing member always biasing the moveable member in such a direction as to increase...
7819102 Valve driving device for internal combustion engine  
A lost motion spring is disposed to contact at one end an oscillating member interposed between a cam and a valve for synchronizing the oscillating of the valve with the rotation of the cam. The...
7765973 Motorcycle provided with valve-operating mechanism  
The present invention provides a motorcycle having a valve-operating mechanism for actuating a valve which opens and closes a combustion chamber of an internal combustion engine. The...
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 outside of...
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...
Matches 1 - 50 out of 111 1 2 3 >