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5592910 Camshaft phase changing device  
A camshaft phase changing device has a pair of axially-spaced annular front and rear gears disposed and engaged between co-axial drive and driven members. An annular piston is mounted to the...
5588404 Variable cam phaser and method of assembly  
A variable cam phaser has drive and driven members connected by helical splines of an annular phase control piston and a lash control piston, axial motion of which varies the angular phase relation...
5579665 Torsional absorber for camshaft sprockets  
A vibration damper assembly to absorb vibrations in a camshaft and sprocket system has a sprocket positioned around a camshaft, an inertia ring positioned around the camshaft and adjacent the...
5566651 Device for continuous angular adjustment between two shafts in driving relationship  
The invention concerns a device for continuous angular adjustment between at least two shafts, a crankshaft and a camshaft of an internal combustion engine, in driving relationship particularly,...
5562072 Valve lash adjustment for overhead camshaft type engine  
For an overhead camshaft type internal combustion engine, a valve lash adjustment system and apparatus using a sliding wedge for adjusting a bearing support for a journal of the camshaft thus...
5562071 Engine valve operation timing control apparatus  
An engine valve operation timing control apparatus having a learning control function determines whether both of an actual phase difference angle and a target value between a crankshaft and a...
5560267 Camshaft vibration damper  
A camshaft vibration damper comprises an inertia ring having a friction clutch surface disposed in driving contact with a complementary clutch surface and a spring for biasing the clutch surfaces...
5560329 Valvetrain for a pushrod engine  
An internal combustion engine has a crankcase, a cylinder bank extending from the crankcase and a crankshaft disposed in the crankcase. A cylinder in the cylinder bank is closed by a cylinder head...
5558053 Timing variator between the crankshaft and the camshaft of an internal combustion engine  
A timing variator disposed between a crankshaft and a camshaft of an internal combustion engine includes a body portion connected to the crankshaft and a hub connected to the camshaft. A piston is...
5553573 Valve duration control system for four-cycle engine  
A control system for a four-cycle internal combustion engine controls a cam drive mechanism for an intake valve such that a cam of the cam drive mechanism maintains a valve open duration of the...
5542383 Dual output camshaft phase controller  
A camshaft phase controller for an internal combustion engine controls separate intake and exhaust camshafts driven by the engine's crankshaft such that the angular phases of the camshafts may be...
5540197 Device for adjusting valve timing in an internal combustion engine  
A device (3) for adjusting valve timing in an internal combustion engine, disposed on a drive pinion (4) within a control gear of at least one camshaft (2) mounted in a cylinder head (1), which...
5535705 Variable valve timing system having rotational vibration damper  
A variable valve timing system includes helical splines to effect a relative rotation between an input member and an output member. The output member drives an intake and an exhaust valve against...
5529034 Valve timing control apparatus for engine  
A cam shaft of an engine is provided with a timing change mechanism (VVT) which is driven by hydraulic pressure to alter the timing of a intake valve (valve timing). This VVT is controlled to...
5520145 Valve timing controller  
A valve timing controller for varying the rotating phase of a cam shaft which drives a valve of an internal combustion engine. A pulley is disposed on the circumference of the cam shaft at an end...
5509383 Hydraulic unit  
A hydraulic system with a hydraulic pump driven directly by an internal-combustion engine reduces the dimension, weight and number of component parts used in the state of the art systems while...
5507254 Variable phase coupling for the transmission of alternating torques  
One of the driving and driven parts of the coupling is connected to a cylinder and the other to a piston which delimit therebetween two antagonistic chambers. The chambers have a substantially...
5501186 Engine valve control mechanism  
An engine valve control mechanism is disclosed in which the eccentricity of an intermediate member can be varied by a pivotable support and a valve lift of a cylinder valve is varied in response to...
5497738 VCT control with a direct electromechanical actuator  
A camshaft (126) has a vane (160) secured to an end thereof for non-oscillating rotation therewith. The camshaft also carries a sprocket (132) which can rotate with the camshaft but which is also...
5494009 Valve control device for internal combustion engine  
An improved control device for intake and/or exhaust valves of an internal combustion engine includes a small circumference portion defined in a drive shaft at a location corresponding to that of...
5489243 Timing belt tensioner for an engine  
A drive arrangement for the camshaft of an internal combustion engine employed in an outboard motor that includes a pivoted idler pulley that is disposed within the outer periphery of the flywheel...
5483930 Valve timing control device  
In a valve timing control device, when a camshaft is retained relative to a timing pulley, a hydraulic piston is applied with a force which moves it in a direction toward an advancing-side...
5474038 Device for continuous automatic angular adjustment between two shafts in driving relationship  
A device for angular adjustment between at least two shafts, a crankshaft and a cam shaft, in driving relationship in an internal combustion engine, comprising an adjusting element arranged in a...
5469818 Variable valve timing control device for an engine  
The variable valve timing control device according to the present invention controls the valve timing of the intake valves of the engine based on the optimum valve timing at the full load operation...
5462022 Valve timing control apparatus having cylinder discriminating function  
A transmitting device is operative for transmitting a rotational force from a crankshaft to a camshaft. A rotational phase adjusting device is operative for adjusting a relative rotational phase...
5450825 Method for activating a device for the relative rotation of a shaft and device for the relative rotation of the shaft of an internal combustion engine  
The device for the relative rotation of the shaft of an internal combustion engine with respect to the drive wheel, which is rotatably arranged on the shaft, has a hydrostatic pump whose housing is...
5447127 Internal combustion engine with an overhead camshaft  
A lawn mower has at least one rotary cutting blade and an internal combustion engine for operating the at least one cutting blade, wherein the lawn mower can be operated on a substantially...
5447126 Variabe cam phaser for internal combustion engine  
A variable cam phaser (VCP) is disclosed in various modifications. The VCP includes a piston responsive to pressure in a fluid chamber having an inlet orifice and a plurality of outlets including a...
5417186 Dual-acting apparatus for variable valve timing and the like  
An apparatus and method effects the cyclical actuation of an actuation member. The apparatus can be driven by a crankshaft and has at least one dual-acting phasing apparatus with at least three...
5400748 Internal-Combustion engine with two rows of cylinders  
An internal combustion engine with two rows of cylinders with a V-angle of 180 degrees has a crankshaft provided with a flywheel, said crankshaft having a drive for a parallel intermediate shaft...
5386808 Camshaft drive for an internal-combustion V-engine  
A camshaft drive for an internal-combustion engine with a V-shaped cylinder arrangement has two output wheels on the crankshaft, one of each respectively being assigned to a cylinder bank. The...
5386807 Device for adjusting the rotational angle relationship between a camshaft and its drive element  
The adjustment device for continuously adjusting an angular orientation of a camshaft of an internal combustion engine relative in relation to a drive wheel of the engine, has a servomotor...
5385125 Four cycle engine  
A multiple valve internal combustion engine and specifically a cylinder head and valve operating mechanism therefore. The cylinder head is formed from a two part construction and an arrangement is...
5381764 Valve timing controller for use with internal combustion engine  
An internal combustion engine is equipped with a valve timing controller capable of minimizing the electric power consumption and frictional wear of elements. The valve timing controller can vary...
5377638 Hydraulic adjusting device  
A hydraulic adjusting device for rotating a camshaft relative to its drive wheel which includes a coupling member, which cooperates with the drive wheel and with the camshaft via a pair of gear...
5377639 Variable valve timing system  
A variable valve timing system in an engine having a rotating cam-shaft includes an input pulley driven by the engine, a piston engaged with the input pulley so as to be displaceable in angular...
5367992 Variable camshaft timing system for improved operation during low hydraulic fluid pressure  
A variable camshaft timing system (VCT system) for an internal combustion engine having a rotatable crankshaft (22) and a rotatable camshaft (26, 126). The camshaft (26, 126) is position variable...
5365896 Cam shaft assembly for use in internal combustion engine  
A cam shaft assembly comprises a first coupling between a drive collar rotatable with a driving shaft and an annular disc at a first position spaced from the shaft axis, and a second coupling...
5366418 Chain guide device in engine  
A fixed guide and a first movable guide the lower portion of which being pivotally supported are disposed on both sides of a path of rotational movement of a camshaft driving chain which interlocks...
5365898 Device for changing a rotational position of a control shaft that controls gas exchange valves of an internal combustion engine  
A device for changing the rotational position of a rotating, driven control shaft that controls the opening and closing of gas exchange valves of an internal combustion engine and is displaced via...
5361735 Belt driven variable camshaft timing system  
A camshaft (326) has a vane (360) secured to an end thereof for a non-oscating rotation therewith. The camshaft also carries a timing belt driven pulley (332) which can rotate with the camshaft but...
5361736 Variable valve timing  
A means of varying both the opening and closing angle of internal combustion engine valves by means of a mechanism which varies the instantaneous phase of the camshaft with respect to the phase of...
5357915 Valve system for internal combustion engine  
A valve system for an internal combustion engine capable of changing the valve timing and valve lift of the intake and exhaust valves driven by rocker arms and overhead camshafts. A cam support...
5355850 Adjustable force transmission arrangement for a camshaft of a big diesel engine  
The invention relates to an adjustable force transmission arrangement in a big diesel engine for accomplishing force transmission from a crankshaft (9) of the engine by means of gear wheels to at...
5355849 Automatic variator valve overlap or timing and valve section  
An automatic variator for use in an internal combustion engine and other engines which use valve-type distribution systems, to operate a twin set of double-effect distribution sequential valve...
5353755 Arrangement of variable valve timing control system on V-type engine  
A V-type internal combustion engine comprises a plurality of hydraulically actuable valve operation mode control actuators for two cylinder banks. A hydraulic fluid network is fluidly disposed...
5351663 V-type engine  
V-type engine has intake and exhaust valves for each cylinder, the intake valve being inclined at an angle relative to a center line of each cylinder bore larger than an angle relative to the...
5343834 Device for adjusting the rotational angle relationship between a camshaft and its drive element  
A device for adjusting a rotational angle relationship between a camshaft and its drive element, comprising two circular segment shells provided on the drive element together with an interposed...
5341777 Valve operation control system  
A valve operation control system for an internal combustion engine having a cam-shaft and a crank-shaft has an adjusting device for adjusting a phase difference between the cam-shaft and the...
5337711 Camshaft phase change device  
Devices (10,110,150,200 and 250) include roller clutches for controlling rotational phase change of a camshaft between full advance and full retard positions and positions therebetween. Each of the...