Matches 351 - 400 out of 1489 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6810844 Method for 3-step variable valve actuation  
A method of variably actuating a valve of an engine includes selecting one of three valve lift profiles dependent at least in part upon engine operating conditions and parameters. The selected...
6810842 Oil control valve and installing method thereof  
An oil control valve ( 60 ) that controls a valve timing gear mounted on a cylinder head ( 1 ) of an internal combustion engine. The oil control valve includes a housing ( 3 ) with plural oil...
6807956 Method for a cylinder-charge control in the case of an internal combustion engine  
A method for cylinder-charge control is described as implementing an internal recirculation of residual gas in the cylinder, through controlling the closing times of at least one exhaust valve of...
6807932 Rocker arm  
A rocker arm 1 includes an arm body 4 prepared from a single plate material by means of a press work. The arm body 4 includes a pair of parallel side walls 5 and a connecting wall 6 ...
6807931 Control method for transitions between open and closed loop operation in electronic VCT controls  
In a Variable Cam Timing (VCT) control system, there are conditions when the system must operate in an open-loop mode, and other situations where closed-loop operation is desired. A number of...
6807930 Actuating drives for valve drives having a variably adjustable stroke, for valves of internal combustion engines  
An actuating drive for valve drives having a variably adjustable stroke, for actuating valves of internal combustion engines is provided, which can be arranged in cylinder heads having usual...
6807929 Engine valve actuation system and method  
An engine valve actuation system is provided. The system includes an engine valve moveable between a closed position and an open position. A spring is operatively connected to the engine valve to...
6802299 Method and device for controlling the operation of an internal combustion engine  
A control system and a control method for an internal combustion engine have a cylinder including an intake valve and an exhaust valve with a fully variable valve-gear assembly. An engine control...
6802288 Deactivation hydraulic valve lifter having a pressurized oil groove  
A deactivation hydraulic valve lifter which includes an elongate lifter body having a substantially cylindrical outer surface and an inner wall, the inner wall defining at least one annular pin...
6802287 Valve mechanism, in particular for internal combustion engines  
The valve drive mechanism is particularly suitable for internal combustion engines of motor vehicles. The mechanism has at least one driven cam element and a valve control member which is moved...
6799552 System and method for controlling engine operation  
A system for operating an internal combustion engine includes an intake valve moveable between a first position at which fluid is blocked from flowing to or from the cylinder and a second position...
6799543 Valve deactivation system with free motion spring  
A valve deactivation system includes a deactivation rocker arm assembly and a free motion spring assembly. The deactivation rocker arm assembly includes an elongate rocker arm defining an aperture....
6796275 Method and apparatus for calculating minimum valve lift for internal combustion engines  
A controller calculates valve lift of intake and exhaust valves for a cylinder of an internal combustion engine. A first desired pressure ratio (P cyl /P int ) is selected to minimize induction...
6792904 Method and arrangement for affecting engine braking  
Method and arrangement for engine breaking in motor vehicles having an internal combustion engine with at least one cylinder, at least one exhaust valve at the cylinder and a rocker arm ( 4 ) for...
6792903 Mechanical control of the intake valve lift adjustment in an internal combustion engine  
The present invention relates to a mechanically controllable valve lift adjustment. The present invention also relates to an internal combustion engine having a mechanically controllable valve lift...
6792902 Externally mounted DPCS (differential pressure control system) with position sensor control to reduce frictional and magnetic hysteresis  
The cam phaser of the present invention includes an externally mounted DPCS ( 234 ) with spool position feedback to control the position of a center mounted spool valve ( 192 ) and control the...
6789521 Valve system for engine  
A decompression system for a four-cycle engine includes a decompression shaft positioned within a camshaft. The decompression shaft interacts with decompression pins positioned within pin holes...
6786185 Variable valve actuation mechanism having partial wrap bearings for output cams and frames  
A variable valve actuation (VVA) mechanism includes a partial wrap output cam assembly and a partial wrap frame assembly. Each of the partial wrap cam assembly and the partial wrap frame assembly...
6782859 Valve system for OHV-type four-cylinder internal combustion engine  
In a valve system for a OHV horizontally-opposed, four-cycle internal combustion engine, valve camshafts are provided at crankcase portions for supporting a crankshaft, of left and right cylinder...
6782858 Valve drive for an internal combustion engine  
In a valve drive for an internal combustion engine, an elongated securing device or anti-rotation bridge referred to as a mounting aid has receptacle spaces, arranged at intervals one behind the...
6782855 Valve train and method for reducing oil flow to deactivated engine valves  
An engine valve train has oil flow to valve actuating components cut off or restricted when the valves are closed, to reduce parasitic losses. In an exemplary embodiment, a pushrod has a pivotable...
6782854 Valve timing control device  
A valve timing control device includes a rotation member for opening and closing values, a rotation transmitting member rotatably mounted on the rotation member, a fluid chamber defined between the...
6782853 Control apparatus and method for valve actuating system of internal combustion engine  
A control apparatus is provided for a valve actuating system which is operable to lift an intake valve or an exhaust valve of an internal combustion engine and includes a lift characteristic...
6779502 Cam system capable of small discrete angular cam positions relative to a rotatable shaft  
System uses a method of securing a cam to a rotatable shaft in a discrete angular position with respect to the shaft. The device uses leaf springs along the inside diameter of the cam to lock...
6779501 Method to reduce rotational oscillation of a vane style phaser with a center mounted spool valve  
A phaser for an internal combustion engine having at least one camshaft. The phaser has a housing and a rotor. The housing has an outer circumference for accepting a drive force and the rotor...
6779498 Internal combustion engine operating on spark-ignitable fuel  
An internal combustion engine operating on spark-ignitable fuel, which features at least one operating mode with homogeneous charge and self-ignition, and which includes at least one intake valve...
6779497 Valve stroke control for internal combustion engines of motor vehicles  
A valve stroke control for an internal combustion engine of a motor vehicle has a control device for adjusting a valve stroke. It interacts with a camshaft and a control shaft. The control device...
6776130 Control apparatus of variable valve timing mechanism and method thereof  
A rotation phase of a camshaft relative to a crankshaft is detected based on a crank angle signal and a cam angle signal, and also the currents or voltages of electromagnetic brakes constituting a...
6772742 Method and apparatus for flexibly regulating internal combustion engine valve flow  
In an internal combustion engine, a fixed engine valve timing profile may be combined with a variable profile produced by a valve actuator coupled to one or more engine valves. By controlling one...
6772720 Valve timing control device for internal combustion engine  
A valve timing control device for an internal combustion engine, in which upon cold start, combustion gas containing quench hydrocarbons and wet fuel is confined in a combustion chamber by...
6772719 Hydraulic valve lifter with operating control system  
In an operating system for a hydraulic valve clearance control element of an internal combustion engine, which includes a hydraulic fluid having a pressure that depends on the engine operating...
6769404 Combustion control system for spark-ignition internal combustion engine with variable piston strike characteristic mechanism and variable valve operating mechanism  
A combustion control system for a spark-ignition internal combustion engine includes a variable piston stroke characteristic mechanism changing a compression ratio of the engine, sensors detecting...
6769392 Variable valve timing in a homogenous charge compression ignition engine  
The present invention relates generally to the field of homogenous charge compression ignition engines, in which fuel is injected when the cylinder piston is relatively close to the bottom dead...
6769385 System for controlling engine valve seating velocity  
A velocity control system for an engine valve is provided. The system includes a valve having a housing defining an opening, a chamber adapted to receive a fluid, a first fluid passageway...
6766778 Valve mechanism with a variable valve opening cross-section  
The invention relates to a valve mechanism with a variable valve opening cross section for use in an internal combustion engine and having a gas exchange valve acted on by the force of a valve...
6766777 Method to ensure robust operation of a pin lock in a vane style cam phaser  
A variable camshaft timing phaser having a locking pin directly influenced by engine oil, which is not impacted by any intervening valves. The locking pin is comprised of a tapered pin, which fits...
6763793 Valve system for internal combustion engine  
A valve system has a piston mounted in a cylinder in one of first and second rocker arms and is adapted to be forced by a return spring, and an engagement projection formed in the other one of the...
6761138 Valve timing control apparatus for internal combustion engine  
Valve timing control apparatus for internal combustion engine includes a cam phase actuator ( 1113 ) composed of a first rotor ( 1 ) rotatable with a crank, a second rotor ( 6 ) fixed on a cam...
6758187 Method and apparatus to estimate oil aeration in an engine  
The present invention is a method and apparatus to determine an amount of aeration of fluids such as engine oil, thus permitting more aggressive operation of an oil-driven actuator, with fewer...
6758179 Method and apparatus for controlling a variable valve system for an internal combustion engine  
The present invention provides a method and apparatus to control the rate of change of the variable cam phasing system during transient engine operating conditions. It does this primarily to...
6758177 Method and apparatus to control a variable valve system  
The present invention provides an improvement over conventional engine controls by providing a method and system that operates a variable valve system immediately subsequent to engine start, and...
6755167 Two-step roller finger cam follower having spool-shaped low-lift roller  
A two-step roller finger follower including an elongate body having side walls defining coaxially disposed shaft orifices, a pallet end and a socket end interconnecting with the side walls to...
6755165 Valve control apparatus and method for internal combustion engine  
The invention controls the opening of an oil control valve (OCV), which controls the operation of a variable valve timing mechanism in an internal combustion engine, according to a duty ratio of a...
6752121 Cylinder deactivation system timing control synchronization  
An engine control system in a vehicle including a variable displacement internal combustion engine configured as an overhead valve engine including telescoping lifters hydraulically actuated by...
6752107 Apparatus for switching the operation of a change valve of a combustion engine  
An apparatus for converting or changing the operation of a charge valve of a combustion engine, which comprises a camshaft with at least one valve cam, a swing lever supported on a machine-mounted...
6745734 Variable valve actuating mechanism having torsional lash control spring  
A variable valve actuating mechanism includes an output cam pivotally disposed upon an input shaft of an engine. First and second frame members are disposed upon the input shaft on respective sides...
6745733 Actuating system for mode-switching rocker arm device  
An actuating system for a mode-switching rocker arm device includes an elongate actuator shaft having a central axis that is parallel with and spaced apart from a central axis of an engine...
6745122 Method for operating an internal combustion engine  
A method for operating a multi-cylinder internal combustion engine having gas exchange valves which are variably adjustable with respect to the valve opening characteristics either directly...
6742483 Assisting device and method for variable valve mechanism  
An output from each of output rods is converted into an assisting force via a corresponding one of rollers, while an outer peripheral surface of each of the rollers moving together with a control...
6739296 Apparatus and method for controlling variable valve operating mechanism  
In an internal combustion engine equipped with a variable valve operating mechanism that performs a valve timing control and a valve lift amount control of at least one of an intake valve and an...
Matches 351 - 400 out of 1489 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >