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Class Information
Number: 123/90.16
Name: Internal-combustion engines > Poppet valve operating mechanism > With means for varying timing > Cam-to-valve relationship
Description: Device wherein the means is located between a cam and the valve actuated thereby and serves to modify the operational relationship of the one to the other.


Patents under this class:

Patent Number Title Of Patent Date Issued
6928967 Electromagnetic hydraulic valve, in particular a proportional valve for controlling device for adjusting the rotation angle of a camshaft relative to the crankshaft in an internal combustion e Aug. 16, 2005
6928969 System and method for controlling engine operation Aug. 16, 2005
6928970 Device for the variable control of gas exchange valves in an internal combustion engine Aug. 16, 2005
6925976 Modal variable valve actuation system for internal combustion engine and method for operating the same Aug. 9, 2005
6925978 Two-step roller finger cam follower having angled lock pin Aug. 9, 2005
6923150 Valve timing control system for an internal combustion engine Aug. 2, 2005
6923151 Apparatus for the adjustment of the stroke of a valve actuated by a camshaft Aug. 2, 2005
6920849 Device for controlling cylinder disconnection in an internal combustion engine Jul. 26, 2005
6920850 Engine lubrication system Jul. 26, 2005
6920851 Variable valve control apparatus for internal combustion engine and method thereof Jul. 26, 2005
6920852 Apparatus and method for controlling engine valve opening in internal combustion engine Jul. 26, 2005
6920853 Variable valve timing control device Jul. 26, 2005
6920854 Variable valve actuation apparatus for internal combustion engine Jul. 26, 2005
6920857 Deactivation hydraulic valve lifter having a pressurized oil groove Jul. 26, 2005
6918362 Engine with variable cam timing and control advantageously using humidity sensor Jul. 19, 2005
6918363 Valve drive apparatus of internal-combustion engine Jul. 19, 2005
6915768 Variable operating valve apparatus for an internal combustion engine Jul. 12, 2005
6915769 Variable valve system for internal combustion engine Jul. 12, 2005
6915775 Engine operating method and apparatus Jul. 12, 2005
6912981 Method and apparatus to correct a cam phaser fault Jul. 5, 2005
6912982 Device for changing the angle of rotation of a camshaft relative to a drive wheel of an internal combustion engine Jul. 5, 2005
6910449 Method for auto-ignition operation and computer readable storage device for use with an internal combustion engine Jun. 28, 2005
6907851 Engine valve actuation system Jun. 21, 2005
6907852 Valve operating device for variable stroke adjustment of a charge exchange valve of an internal combustion engine Jun. 21, 2005
6907339 Method for controlling an internal combustion engine Jun. 14, 2005
6901893 Valve deactivator assembly Jun. 7, 2005
6901894 Finger lever of a valve train of an internal combustion engine Jun. 7, 2005
6901897 Method and intake cam for retaining exhaust residuals for emissions reduction in a diesel engine Jun. 7, 2005
6895911 Method for simultaneously moving cam shafts of various cylinder banks pertaining to an internal combustion engine May. 24, 2005
6895912 Variable valve control apparatus for engine and method thereof May. 24, 2005
6892684 Variable valve gear May. 17, 2005
6892714 Exhaust gas reflux apparatus for internal combustion engine May. 17, 2005
6889641 Camshaft control device and control valve with leakage compensation May. 10, 2005
6889643 Rocker arm and manufacturing method thereof May. 10, 2005
6889644 Valve guide for rocker arm assembly May. 10, 2005
6886511 Lost motion assembly for a poppet valve of an internal combustion engine May. 3, 2005
6886513 Valve mechanism comprising a variable cross-section of a valve opening May. 3, 2005
6886532 Intake system of internal combustion engine May. 3, 2005
6883476 Control system and method for an internal combustion engine Apr. 26, 2005
6883477 Apparatus for deactivating an engine valve Apr. 26, 2005
6883480 Camshaft adjuster for internal combustion engines of motor vehicles Apr. 26, 2005
6883481 Torsional assisted multi-position cam indexer having controls located in rotor Apr. 26, 2005
6883492 Compact lost motion system for variable valve actuation Apr. 26, 2005
6880505 Valve timing control system Apr. 19, 2005
6880517 Two-step combustion system Apr. 19, 2005
6877465 Method and apparatus for adjusting the angular position of a collar on a shaft Apr. 12, 2005
6877466 Variable valve operating system for internal combustion engine Apr. 12, 2005
6877469 Control device for an air valve of an engine Apr. 12, 2005
6877493 Variable operation intake valve controlling apparatus and method for internal combustion engine Apr. 12, 2005
6868811 Frameless variable valve actuation mechanism Mar. 22, 2005



 
 
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