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| Number | Title | Issue Date |
| 7347173 | Valve timing control system for internal combustion engine A valve timing system for an internal combustion engine includes a phase alteration mechanism interposed between a driving rotator and a driven rotator and having a direction turning point at which the phase alteration direction is reversed when a movable portion of... | 03/25/2008 |
| 7343887 | Apparatus for abnormal diagnosis of variable valve timing mechanism An abnormality diagnosis system 100 includes a VVT controller 110, an adjustable valve mechanism 120, a cam angle sensor 130, a model computation module 140, an abnormality detection module 150, and an alarm lamp 160.... | 03/18/2008 |
| 7331318 | Camshaft adjuster with play-free locking Camshaft adjusters according to the swivel motor principle may be provided with a bar which arrests the rotor in a position relative to the stator. A bar according to the invention is provided with two portions, between which a change of power transmission takes pla... | 02/19/2008 |
| 7308878 | Valve timing control apparatus A valve timing control apparatus includes a driving side rotational member, a driven side rotational member formed with a plurality of recessed portions into which a supporting jig is insertable at a second side thereof in the axial direction, a fluid pressure chamb... | 12/18/2007 |
| 7270096 | Variable phase drive mechanism A twin vane-type phaser is described which is provided with a locking mechanism for locking the drive member to the driven members when the pressure in the working chambers is a below is predetermined value. The locking mechanism comprises two coaxial locking pins | 09/18/2007 |
| 7252073 | Engine timer for cold-start advance Each of paired centrifugal weights are interlockingly connected to an advancing spring, which is interlockingly connected to a temperature-sensing operation device. When cold-starting the engine, the advancing spring is maintained extensible based on a state of the ... | 08/07/2007 |
| 7225772 | Method, control unit and program code for a control unit for controlling a camshaft control device To operate a steplessly adjustable camshaft control device, particularly reliably and safely, an adaptation of the camshaft and the crankshaft is performed so that a phase angle (actual value) of the camshaft to the crankshaft is determined, the phase angle is monit... | 06/05/2007 |
| 7214153 | Method of changing the duty cycle frequency of a PWM solenoid on a CAM phaser to increase compliance in a timing drive A chain drive having a phaser such as a hydraulic vane phaser interposed between a timing chain and a driving or driven shaft is provided. The phaser or the vane are controlled to oscillate more at certain engine speeds to thereby reduce the tensioning force on the ... | 05/08/2007 |
| 7213554 | Valve timing control apparatus for internal combustion engine A valve timing control apparatus for controlling an opening and closing timing of a valve of an internal combustion engine includes a driving side rotational member synchronously rotated with a crankshaft, a driven side rotational member provided coaxially with the ... | 05/08/2007 |
| 7204217 | Hydraulic camshaft adjuster for a camshaft of an internal combustion engine In a hydraulic camshaft adjuster for a camshaft of an internal combustion engine, with an inner body connected for rotation with the camshaft and having at least one vane extending into a chamber formed in an outer body mounted rotatably relative to the camshaft and... | 04/17/2007 |
| 7159549 | Variable valve system of internal combustion engine A camshaft is formed at a generally middle portion with an enlarged cylindrical portion. An annular vane member is mounted on the enlarged cylindrical portion and secured thereto by means of a nut. An annular housing or sprocket is arranged to receive therein the an... | 01/09/2007 |
| 7152561 | Control structure for the adjusting motor of an electric camshaft adjuster A control structure for the adjusting motor of an electric camshaft adjuster in an internal combustion engine is provided. The control structure includes a controller which processes measuring signals of the internal combustion engine to control data for the adjusti... | 12/26/2006 |
| 7150251 | Valve timing control apparatus The invention intends to improve a response by utilizing a rotational variable torque of a cam shaft. Communication paths respectively communicating an advance hydraulic chamber and a retard hydraulic chamber provided in a second rotary member and a hydraulic connec... | 12/19/2006 |
| 7143730 | Valve timing control system for internal combustion engine A valve timing system for an internal combustion engine includes a phase alteration mechanism interposed between a driving rotator and a driven rotator and having a direction turning point at which the phase alteration direction is reversed when a movable portion of... | 12/05/2006 |
| 7117832 | Device for adjusting a camshaft of an internal combustion engine of a motor vehicle A device for adjusting a camshaft of an internal combustion engine of a motor vehicle has a stator and a rotor fixedly connected to a camshaft and rotatable relative to the stator. A drive wheel is fixedly connected to the stator and is centered by the camshaft. The... | 10/10/2006 |
| 7089898 | Valve timing control device of internal combustion engine In a valve timing control device, a control means is configured to carry out feeding one of retarding and advancing chambers with a hydraulic pressure upon starting of the engine; actuating one of first and second disengaging mechanisms to cancel the engagement of o... | 08/15/2006 |
| 7059286 | Valve timing control apparatus for internal combustion engine In a valve timing control apparatus, hydraulic oil is supplied into retarding and advancing chambers, and first and second hydraulic chambers, when hydraulic pressure is less than a predetermined pressure and when a phase difference between a most advancing target p... | 06/13/2006 |
| 7025023 | Hydraulic camshaft adjuster for an internal combustion engine In a hydraulic camshaft adjuster for an internal combustion engine including a hydraulic operating unit for adjusting the angular position of the camshaft relative to a camshaft drive by way of a hydraulic control valve with a valve housing in which a control piston... | 04/11/2006 |
| 6997150 | CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals A variable camshaft timing phaser for an internal combustion engine having at least one camshaft comprising a plurality of vanes in chambers defined by a housing and a spool valve. The vanes define an advance and retard chamber. At least one of the vanes is cam torq... | 02/14/2006 |
| 6971351 | Valve timing adjusting device A region including an engaging hole is given surface treatment such as partial quench hardening by induction hardening for improving surface hardness of the region. The partial quench hardening by induction hardening provides the region with satisfactory mechanical ... | 12/06/2005 |
| 6968816 | Oil flow control valve In an oil flow control valve (OCV) according to the present invention, a first volume varying chamber is adapted to communicate with a second volume varying chamber through a second plunger breathing path, and the second volume varying chamber is adapted to communic... | 11/29/2005 |
| 6962133 | Variable valve timing control device A variable valve timing control device comprises a housing member integrally rotating with either one of a crankshaft or a camshaft of an internal combustion engine, a rotor member assembled to the housing member so as to be rotatable relative thereto, including at ... | 11/08/2005 |
| 6957635 | Valve timing control for marine engine An engine for a marine drive has a combustion chamber. An engine body of the engine defines intake and exhaust ports communicating with the combustion chamber. An air induction system communicates with the combustion chamber through intake ports. An exhaust system c... | 10/25/2005 |
| 6932037 | Variable CAM timing (VCT) system having modifications to increase CAM torsionals for engines having limited inherent torsionals In a variable cam timing (VCT) system that has a crank shaft coupled to at least one cam shaft. The system has at least one timing gear associated with the crank shaft or a cam shaft. The timing gear includes at least two groups of toothlike projections including a ... | 08/23/2005 |
| 6920853 | Variable valve timing control device A variable valve timing control device includes a rotation member for opening or closing a valve, a rotation transmission member engaged with the rotation member to be relatively rotatable, a vane provided on either one of the rotation member or the rotation transmi... | 07/26/2005 |
| 6892685 | Camshaft control device and control valve with leakage compensation The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (... | 05/17/2005 |
| 6889641 | Camshaft control device and control valve with leakage compensation The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (... | 05/10/2005 |
| 6883480 | Camshaft adjuster for internal combustion engines of motor vehicles A camshaft adjuster for internal combustion engines of motor vehicles has a stator having a casing and stays connected to the casing and projecting radially inwardly. A rotor rotatable relative to the stator is fastened on the camshaft. The rotor has a rotor base me... | 04/26/2005 |
| 6866013 | Hydraulic cushioning of a variable valve timing mechanism A variable camshaft timing mechanisms having a vane/housing format is provided. Working hydraulic chambers are created by imposing either single or multiple vanes of a rotor attached to the camshaft into a cavity in a housing that is attached to the camshaft sprocke... | 03/15/2005 |
| 6827053 | Camshaft control device and control valve with leakage compensation The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (... | 12/07/2004 |
| 6805081 | Valve timing control device for internal combustion engine A valve timing control device for an internal combustion engine, comprises a drive rotary member rotated by a crankshaft of the engine, a driven rotary member to rotate a camshaft of the engine upon rotation of the drive rotary member; a rotational phase control mec... | 10/19/2004 |
| 6799544 | Method and apparatus for actuating a cam phaser A camshaft phaser wherein camshaft oscillatory torque resulting from opening and closing of an associated engine valve is employed to controllably adjust the degree of advance or retard of the rotor. All advance chambers communicate with a first annular passage, and... | 10/05/2004 |
| 6769386 | Adjusting element for a rotary piston The invention concerns a rotary piston adjuster for adjusting the angular position of the camshaft of an internal combustion engine, said adjuster comprising an outer rotor having at least one hydraulic chamber, and an inner rotor comprising at least one pivoting va... | 08/03/2004 |
| 6742485 | Cam phaser locking pin assembly guide A vane-type cam phaser wherein a locking pin assembly is disposed between a rotor and a stator of the phaser to selectively couple the rotor and stator together under certain operating conditions, for example, during engine start-up. The central axis of the locking ... | 06/01/2004 |
| 6739298 | Valve timing adjusting apparatus In a valve timing adjusting apparatus, rotating response speed of a vane rotor and a moving speed of a lock piston are changed according to changes of oil temperature and pressure. It sometimes happens that the lock piston passes the fitting hole before the lock pis... | 05/25/2004 |
| 6701878 | Variable valve timing device A variable valve timing device includes a rotation transmitting member rotated integrally with a rotation shaft of an engine, a rotor member disposed in the rotation transmitting member to be rotated relative to the rotation transmitting member and rotate... | 03/09/2004 |
| 6701877 | Camshaft control device and control valve with leakage compensation The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting e... | 03/09/2004 |
| 6684835 | Valve timing control device A valve timing control device is provided, which has an advantageous point of locking a relative rotation phase at an intermediate phase based on an engine halt signal. The valve opening-closing timing control device has a relative rotation control mechan... | 02/03/2004 |
| 6679208 | Device for adjusting the angle of rotation of a camshaft of an internal combustion engine relative to a drive wheel An arrangement for relative angle of rotation adjustment of a camshaft of an internal-combustion engine has an interior part non-rotatably connected with the camshaft and having at least approximately radially extending webs or blades. A driven cell wheel... | 01/20/2004 |
| 6669567 | Device for hydraulically adjusting the angle of rotation of a shaft relative to a driving wheel The invention concerns a device for the hydraulic adjustment of the angular position of a shaft (1) relative to a drive pinion (14), said device comprising a plate (2) fixed to the shaft to cooperate with the drive pinion (14) or with a component fixed to... | 12/30/2003 |
