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6598570 |
Variable valve system
A variable valve system for an internal combustion engine has a plurality of valves provided for one cylinder of the internal combustion engine. The plurality of the valves are disposed on one of...
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6595172 |
Variable valve actuator assembly having a secondary actuator
A variable valve actuator assembly includes a main actuator, a secondary actuator and an actuator shaft. The actuator shaft is coupled to each of the main actuator and the secondary actuator. The...
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6595171 |
Valve timing control system for internal combustion engine
There is provided a valve timing control system for an internal combustion engine, which is capable of properly controlling valve timing while maintaining the accuracy of degradation determination...
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6594996 |
Method and system for engine braking in an internal combustion engine with exhaust pressure regulation and turbocharger control
The present invention is directed to a system and method for controlling an engine braking system having an engine with at least one intake and exhaust valve, intake and exhaust manifolds, a...
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6595170 |
Hydraulic valve-operating mechanism
A mechanism for operating one or more valves of a piston device, in particular an intake or exhaust valve of an internal-combustion engine, which valve can move between an open position and a...
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6595174 |
Switching element for a valve train of an internal combustion engine
The invention proposes a switching element ( 1 ) for a valve train of an internal combustion engine, said switching element comprising an outer element ( 2 ) and an inner element ( 4 ) that is...
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6591795 |
Captive volume accumulator for a lost motion system
The present invention is directed to an innovative, economical method or system disclosing a captive volume in a hydraulic circuit which can be selectively hydraulically or pneumatically locked, or...
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6591798 |
Variable valve actuation assembly for an internal combustion engine
A variable valve actuation assembly for actuation of an engine intake valve between low-lift and high-lift modes. The VVA assembly includes a special rocker assembly having a pivotable central...
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6591797 |
Variable fulcrum rocker arm
A variable ratio rocker arm is provided for use in combination with the valve stem and push rod of an internal combustion engine. The rocker arm has a toothed rack. A fulcrum rod is provided with a...
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6588386 |
Variable valve lift system
The present invention relates to a variable valve lift system that varies a valve lift in two stages by selectively rigidly engaging a tappet shim. The system includes a tappet shim receiving an...
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6588394 |
Model-based control of a solenoid-operated hydraulic actuator for engine cylinder deactivation
An improved control method for a solenoid-operated hydraulic actuator for deactivating an engine valve mechanism characterizes the dynamic response of the mechanism based on a lumped parameter...
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6588387 |
Rocker arm device for simultaneous control of valve lift and relative timing in a combustion engine
A valve control system including a valve actuating camshaft (A), having a high lift cam (B) and a low lift cam (C), and an outer rocker arm ( 2 ) engaging the high lift cam, and an inner rocker arm...
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6584943 |
Variable compound rocker system for push rod and overhead camshaft engines
A variable compound rocker system for varying the lift of intake valves of an internal combustion engine is provided. The system comprises a rocker shaft with eccentric rings non-rotatably attached...
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6584942 |
Cylinder deactivation apparatus with vapor purge
Deactivation apparatus for selected cylinders of an engine include switching hydraulic lash adjusters or valve lifters forming part of a valve train for actuating engine valves of the selected...
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6584951 |
Individual hydraulic circuit modules for engine with hydraulically-controlled cylinder deactivation
An internal combustion engine includes hydraulically-controlled cylinder deactivation and has an engine block with a plurality of cylinders formed therein. At least one-half of the cylinders are...
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6578535 |
Valve-deactivating lifter
A valve-deactivation hydraulic valve lifter including a conventional hydraulic lash adjuster means disposed within a pin housing slidably disposed in a lifter body. A transverse bore in the pin...
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6578534 |
Variable valve operating system of internal combustion engine enabling variation of valve-lift characteristic
In an engine employing a variable lift and working angle control mechanism enabling both a valve lift and a working angle of an intake valve to be continuously simultaneously varied depending on...
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6568361 |
Valve operating device for internal combustion engines
A valve operating device for an internal combustion engine enabling both valve timing and valve lift characteristic to be varied depending on engine operating conditions includes intake and exhaust...
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6568365 |
Pulse drive valve deactivator
A valve deactivator is provided that is capable of being activated and deactivated by a pulse energy input. The valve deactivator includes an input member and an output member which are movable...
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6564764 |
Switchable tappet for directly transmitting a cam lift onto a tappet push rod
A switchable tappet for directly transmitting a cam lift onto a tappet push rod, includes a housing having a push rod distal end which is formed with a ramp surface for contact by a cam. An inner...
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6561150 |
Engine valve characteristic controller
The cam face of an intake cam has a main lift portion, which causes an intake valve to execute a basic lift operation, and a sub lift portion, which assists the action of the main lift portion. The...
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6560963 |
Variable timing to avoid turbocharger overspeed while engine braking under different atmospheric conditions
A method of engine compression release braking with avoidance of turbine overspeed is disclosed. Initially, an electronic control module determines whether a turbine overspeed condition is present....
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6561149 |
Rotary phase controller, and valve timing controller of internal combustion engine
A rotary phase controller includes: a permanent magnet block, a yoke block, and an electromagnetic coil block. The permanent magnet block has a constitution where different magnetic pole surfaces...
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6557518 |
Cylinder deactivation apparatus
Cylinder deactivation apparatus includes a simplified hydraulic circuit that provides oil to lash adjusters and to cylinder deactivation control passages through restricted passages adjacent the...
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6553950 |
Internal-combustion engine with variable-operation valves and auxiliary hydraulic tappet
In an internal-combustion engine with a hydraulic system for variable operation of the valves, the piston for operating each valve includes an auxiliary hydraulic tappet.
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6553952 |
Electrically rotatable shaft
The invention concerns an electrically rotatable adjusting shaft ( 1 ) of a fully variable mechanical valve train of an internal combustion engine, said adjusting shaft comprising an adjusting cam....
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6550435 |
Variable valve timing adjustable finger follower assembly
A valve timing system for an internal combustion engine having a roller finger follower assembly including a lash adjustment mechanism. The roller finger follower assembly includes a base arm and a...
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6550433 |
Engine valve actuator with valve seating control
The present invention provides a hydraulic actuator for operating an engine valve, which includes a means for controlling the seating velocity of the valve. The design allows for free, unrestricted...
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6550434 |
Selecting operating mode in an engine with a hybrid valvetrain
A method for selecting which intake valves are operated in an internal combustion with intake valves operated by more than one type of actuation device is disclosed. A criterion for selecting which...
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6550436 |
Intake valve control device of internal combustion engine
An internal combustion engine has an intake valve control device for controlling at least intake valves. The control device comprises a first mechanism which varies a working angle of the intake...
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6543399 |
Apparatus for adjusting a camshaft
The present invention relates to an apparatus for adjusting a camshaft of an internal combustion engine with at least one electromotor which produces, by way of a planetary gear, the adjustment of...
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6546347 |
Method and apparatus for automatically setting rocker arm clearances in an internal combustion engine
A method for automatically setting valve clearances in internal combustion engines (also known as “tappet setting” or “valve lash setting”) comprises a series of steps in which a rocker arm...
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6539902 |
Variable valve timing control apparatus of an internal combustion engine
It is determined whether the current operation condition is in a transitional or steady state. If the operation condition is in a transitional state, then the transition gain is obtained by...
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6536390 |
Variable valve-timing engine
A variable valve-timing engine includes a VTC for adjusting a relative phase angle of an exhaust cam for opening and closing an exhaust valve and an intake cam for opening and closing an intake...
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6532920 |
Multipositional lift rocker arm assembly
A multiple lift position rocker arm 307 is provided which includes a body 10 and a pivotally mounted lost motion arm 44. A latch 120 is connected on one end of the body to prevent pivotal...
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6532924 |
Variable valve actuating mechanism having automatic lash adjustment means
A variable valve actuating mechanism includes an output cam pivotally disposed upon an input shaft. A first link arm is pivotally coupled at a first end thereof to the output cam. A rocker arm is...
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6530351 |
Apparatus for controlling valve timing of internal combustion engine
An apparatus controls valve timing of an internal combustion engine that is provided with helical splines of an actuator for varying a phase difference in rotation and an actuator for varying a cam...
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6526929 |
Device for relative angular adjustment between two drive-connected elements rotating at the same rotational speed
A device for relative angular adjustment between two drive-connected elements rotating at the same rotational speed, in particular between a chain wheel and a camshaft of an internal combustion...
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6523512 |
Control unit for adjusting the angle of rotation of a camshaft
An angle of rotation of a camshaft relative to an angle of rotation of a crankshaft in internal combustion engines is adjusted for influencing the control times of a valve operation sequence. A...
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6523510 |
Valve drive mechanism for engine
A valve drive mechanism includes a tappet assembly which comprises a center tappet, a pair of side tappets between which the center tappet is interposed so as to move relatively to the side...
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6520135 |
Apparatus for adjusting valve lift
An apparatus for adjusting valve lift (VVL apparatus) is made up of a substantially cylindrical tappet casing having on an upper end thereof a cam contact portion which comes into contact with a...
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6516761 |
Adjustable overhead rocker cam
Disclosed is an overhead rocker cam valve operating device for an internal combustion engine and which is particularly useful for race cars or high performance automobiles. The device includes a...
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6516760 |
Valves for i.c. engines with variable lifts and timings
A variable timing system for i.c. engines, especially for motor vehicles, with suction and/or exhaust valves provided with hydraulic tappets in which the position of the oil inlet passages within...
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6516763 |
Method of controlling a device that varies the valve control times an internal combustion engine, especially of a camshaft adjusting device with hydraulically releaseable start lock
A method of actuating a device for varying the valve timing of an internal combustion engine without jamming of the locking element during starting of the internal combustion engine, the solenoid...
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6513470 |
Deactivation hydraulic valve lifter
A deactivation hydraulic valve lifter includes an elongate lifter body having a substantially cylindrical inner wall. The inner wall defines at least one annular pin chamber therein. The lifter...
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6513467 |
Variable valve control device of internal combustion engine
Disclosed is a control device comprising an IVWAV or EVWAV mechanism. The IVWAV mechanism varies a working angle of an intake valve and the EVWAV varies a working angle of an exhaust valve. An...
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6513472 |
Valve train of an internal combustion engine
In a valve train ( 1 ) of an internal combustion engine ( 10 ), a tappet push rod ( 2 ) comprises on its first end ( 3 ), a tappet ( 5 ) and an uncoupling device ( 8 ) made as a single component,...
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6513471 |
Cylinder deactivation engine with advanced exhaust cam timing and method
An engine has switching valve actuators with positive valve lash for actuating or deactivating valves of deactivation cylinders and conventional valve actuators with negligible valve lash for...
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6513469 |
Variable valve operating system of internal combustion engine
A variable valve operating system of an internal combustion engine includes a first variable mechanism capable of variably controlling a lift characteristic of an intake valve, and a second...
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6505586 |
Variable valve timing control apparatus and method for engines
A variable valve timing control apparatus is constructed so as to supply hydraulic pressure to an unlocking chamber for unlocking a lock pin only from a retarding chamber. In cranking an engine, a...
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