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6848402 |
Methods and apparatus for providing variable valve lift for camshaft-actuated valves
Apparatus suitable for use in reciprocally opening and closing a camshaft-actuated valve may include a rotating camshaft ( 20 ) having first and second cams ( 16, 17, 18 ) respectively defining...
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6843214 |
Method for balancing engine cylinder bank output using crankshaft sensing and intake cam phasing
A method is disclosed for balancing work output from cylinder banks of an engine having a common crankshaft and separate intake camshafts with cam phasers for each bank. The method includes sensing...
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6843230 |
Control apparatus and control method of internal combustion engine
In an internal combustion engine provided with a variable valve mechanism that varies a valve operating characteristic (valve lift amount and valve operating angle) of an intake valve, the valve...
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6837197 |
Dual valve lift and valve deactivation
A valve control system ( 13 ) for an internal combustion engine including a cylinder head ( 11 ), and a poppet valve ( 15 ). A camshaft ( 21 ) has a first cam profile ( 25 ) and a second cam...
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6837199 |
Valve actuating apparatus for internal combustion engine
A valve actuating apparatus for an internal combustion engine selectively operating in the normal Otto cycle or the Miller cycle is provided which enables the engine to achieve stable combustion...
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6837475 |
Valve-operating device for engine
A valve-operating device for an engine includes a camshaft which is disposed on one side of a plane including axes of an exhaust valve and an intake valve and which has an axis substantially...
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6837198 |
Variable valve distributor for load-controlling a spark-ignited internal combustion engine
The invention proposes a variable valve train ( 1 ) for throttle-free load control of an internal combustion engine. Each cylinder of the internal combustion engine is provided with two inlet...
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6832584 |
Valve system for internal combustion engine
A valve system for an internal combustion engine has first rocker arms supported by a rocker shaft such that they rock when driven by first cams; a second rocker arm supported by the rocker shaft...
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6832583 |
Direct acting differential two-step valve train
A direct acting two-step valve train uses direct acting switching valve lifters combined with high and low lift or no lift cams providing differential valve lifts for dual intake valves of...
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6832586 |
Variable duration camshaft
A variable timing duration camshaft has an outer shaft ( 1 ) and coaxial inner shaft ( 2 ) adapted so that the shafts ( 1, 2 ) are relatively slidable but not rotatable about each other. The outer...
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6830018 |
Engine valve train
An engine valve train having a camshaft supported on a camshaft holder and driving inlet valves to open and close via inlet rocker arms; an electromagnetic actuator mechanism including an armature;...
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6830020 |
Diesel engine with intake cam phaser for compression ratio control
A cam phaser is mounted on the intake camshaft of a diesel engine and is operable to selectively retard timing of only the intake valves relative to the crankshaft. The purpose of retarding timing...
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6827052 |
Variable valve timing device
A variable valve timing control device includes a rotation member unitary fixed to a rotation shaft for controlling a valve timing assembled to a cylinder head of an internal combustion engine to...
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6820578 |
Valve timing control device
A variable valve timing control device includes a drive member rotatable in synchronization with a crankshaft, a rotatable driven member connected to a camshaft arranged co-axially with the drive...
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6820579 |
Variable valve operating system of engine enabling variation of working angle and phase
In a variable intake-valve operating system for an engine enabling a working angle of an intake valve and a phase at a maximum lift point of the intake valve to be varied, a variable working-angle...
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6817326 |
Valve system for internal combustion engines
Disclosed is a valve system that provides a means of controlling the charging and exhausting of the combustion chamber(s) of internal combustion engines. In this system, asymmetrical valve bodies...
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6814039 |
Valve-actuating devices for internal combustion engines having changeable stroke functions
Valve actuating devices may include a pivot lever ( 8 ) having an abutment element ( 21 ) displaced from a bearing pin ( 6 ). The pivot lever is pivotable by a reciprocating push rod ( 54 ). An...
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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...
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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...
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6810845 |
Lubrication system using valves to meet various engine oil pressure requirements
A lubrication system for an internal combustion engine having valves to optimize oil flow through an engine to increase engine efficiency. The lubrication system includes an engine driven oil pump...
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6810846 |
Flow path structure of hollow tube
To provide a flow path structure of a hollow tube capable of reducing facility cost and product cost by promoting assembling operability, a rocker shaft is constituted by including a tubular member...
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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...
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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...
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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...
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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...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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