Matches 651 - 700 out of 1320 < 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >
Match Document Document Title
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...
6505585 Apparatus and method for controlling valve timing of an engine  
In a vane type valve timing control apparatus, when an amplitude of a rotation phase of a cam shaft with respect to a crank shaft is above a predetermined value, a target value for the rotation...
6502536 Method and apparatus for two-step cam profile switching  
A two-step roller finger follower includes an elongate body having a first side member and a second side member. A first end and a second end interconnect the first and second side members. The...
6502535 Valve timing and lift control system  
A variable valve timing and lift control system for an internal combustion engine is provided which comprises a first control mechanism for variably controlling a valve lift and an operation angle...
6499449 Method and system for operating variable displacement internal combustion engine  
A method of operating an internal combustion engine having a variable cam timing mechanism in cooperation with a plurality of deactivatable cylinders and corresponding intake valves includes the...
6499451 Control system for variable activation of intake valves in an internal combustion engine  
A control system for variable activation of valves in an internal combustion engine. A solenoid is disposed on the outer surface of the valve cam cover to avoid exposure to the hot-oil environment...
6499454 Variable-valve-actuation apparatus for internal combustion engine  
A VVA apparatus includes a driving shaft, a crank cam arranged at an outer periphery of the driving shaft, a VO cam swingably supported by the driving shaft to actuate an engine valve, and a rocker...
6497207 Deactivation roller 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...
6497206 Engine with two cylinder banks each with a valve operating device enabling variation of valve timing and valve lift characteristic  
In an internal combustion engine with two cylinder banks, each cylinder bank having a cylinder head mounting thereon a valve operating device enabling both valve timing and valve lift...
6491008 Variable valve timing adjustable roller rocker arm assembly  
A rocker arm assembly having an adjustably located cam roller that permits modification of valve timing for an internal combustion engine. An adjustment control shaft having an adjustment cam...
6484675 Hydraulic actuator for variable valve mechanism  
A hydraulic actuator includes an elongate cylinder having a central axis, a sidewall, a top and a bottom. The sidewall is interconnected with the top and bottom in an air and fluid tight manner. An...
6484677 Transitions among operating modes in an engine with a hybrid valvetrain  
A method for controlling intake valves in an internal combustion with intake valves operated by more than one type of actuation device includes steps to accomplish smooth transitions among intake...
6481397 Variable valve drive system for an internal combustion engine  
A Variable valve lift mechanism that minimizes the number of components and also which permits a greater latitude of valve lift adjustment including the possibility of no valve lift under some...
6481400 Valve deactivation assembly with partial journal bearings  
A valve deactivation assembly includes an elongate camshaft having at least one lift lobe. The lift lobe has a lift portion and a base circle portion, and is affixed to or integral with the...
6481398 High-low speed range switching type valve mechanism for internal combustion engine  
Several embodiments of variable valve lift mechanisms employing rocker arms that cooperate with high and low speed cam lobes and which are selectively coupled or uncoupled so as to operate the...
6481399 Mechanical regulation of the stroke adjustment of an intake valve of an internal-combustion engine  
The present invention relates to a mechanically regulated valve stroke adjuster. The adjuster has a lifting lever displaying, a means by which the lifting lever is mounted in rotating fashion and...
6477997 Apparatus for controlling the operation of a valve in an internal combustion engine  
A control apparatus for deactivating one of an intake valve and an exhaust valve in an internal combustion engine has a stepped sleeve slidably receiving a valve stem in a smaller diameter portion...
6477998 Cam actuated continuous simultaneously variable valve timing and lifting assembly  
A cam actuated continuous simultaneously variable valve timing and lifting assembly for selectively operating the valve of an internal combustion engine. The valve is actuated by a cam on a...
6474277 Method and apparatus for valve seating velocity control  
A system for controlling the seating of an engine valve is disclosed. The system is designed to bring a hydraulically actuated engine valve to a soft landing on its valve seat. The velocity of the...
6470841 Valve operating system for internal combustion engines  
The present invention provides a valve operating system for internal combustion engines, having a roller rolling contacting a valve operating cam, the system being provided with an oil supply...
6470840 Cylinder head structure  
A cylinder head includes a carrier member 50 integrally formed with a vertical wall portion 53 for supporting a camshaft 15, 16, a tappet guide 54 for containing a tappet 24 and a...
6467443 Valve operating device of internal combustion engine  
A low speed cam is disposed on a cam shaft. A low speed sub-rocker arm actuated by the low speed cam is pivotally connected to a main rocker arm. A connecting member is supported by the main rocker...
6467444 Valve operating system in internal combustion engine  
A valve operating system in an internal combustion engine includes an associative-operation switchover means capable of switching over the associative operation of a pair of rocker arms disposed...
6467445 Deactivation and two-step roller finger follower having a slider bracket  
A roller finger follower. includes an elongate body having first and second opposing sides each having respective inside surfaces. First and second grooves are defined by the respective inside...
6463897 Mechanical assist actuation bracket for deactivation and two-step roller finger followers  
A mechanical assist actuation bracket for use with a roller finger follower. The roller finger follower includes a locking pin assembly having a trigger pin. The mechanical assist actuation bracket...
6460337 Combustion engine  
A turbo-fed internal combustion engine has a first and a second exhaust-gas valve per cylinder, these exhaust-gas valves each being connected to their respective exhaust manifold. One exhaust...
6460495 Switchable support element  
In a switchable support element ( 1 ) for a valve train of an internal combustion engine, the lost motion spring ( 8 ) of the valve train is made as a torsion spring. This spring is arranged...
6457445 Valve lift control device  
A valve lift control device includes an inner tappet biased toward a low-lift cam pertinent to the opening and the closing of a valve in a low-lift mode acting as one of cams which are arranged on...
6450144 Method and apparatus for hydraulic clip and reset of engine brake systems utilizing lost motion  
An internal combustion engine may include a hydraulic linkage used to transfer motion from a valve train element, such as a cam, to an engine valve. Method and apparatus for selectively limiting...
6439179 Deactivation and two-step roller finger follower having a bracket and lost motion spring  
A roller finger follower includes an elongate body having a first side member and a second side member. A bracket having first and second sides is associated with the body. The first side of the...
6439178 Mechanical lash adjuster apparatus for an engine cam  
A rocker assembly has a first arm for following a first or opening camshaft lobe, a second arm for following a second or closing camshaft lobe, and a pivot axis of the rocker arm therebetween. A...
6439177 Low friction variable valve actuation device  
A variable valve train device for use on an internal combustion engine having a rotary camshaft with adjacent valve-opening and valve-closing lobes. The device is mounted on the engine head and is...
6435148 Switchable support element  
A switchable support element ( 1 ) requiring only a small design space. For this purpose, a slide ( 12 ) that serves to couple an inner element ( 6 ) to an outer housing ( 3 ) in the support...
6431131 Apparatus and a method for sliding mode control  
In a valve timing control apparatus for an internal combustion engine using an oil pressure control, a feedback correction amount is calculated so as to have a linear term proportional to a...
6431130 Torque control in an engine with a hybrid valvetrain  
A system and a method for controlling engine torque in an internal combustion with a randomly operable intake valve and a selectable intake valve is disclosed in which torque is controlled via a...
6431129 Method and system for transient load response in a camless internal combustion engine  
A method of operating an internal combustion engine in response to a transient load includes the steps of providing an air charge quantity required to produce a commanded air-fuel mixture within...
6427652 Switchable flat or roller tappet  
The invention proposes a switchable roller tappet ( 1 ) for transmitting a cam lift to a push rod. According to the invention, the inner and the outer rotation-preventing devices of the tappet are...
6425357 Variable valve drive mechanism and intake air amount control apparatus of internal combustion engine  
A variable valve drive mechanism of an internal combustion engine is provided which includes a camshaft that is operatively connected to a crankshaft of the engine such that the camshaft is rotated...
6422186 Lost motion rocker arm system with integrated compression brake  
The present invention is directed to a system for operating at least one exhaust valve of an engine. The engine has at least two engine operating conditions. The system in accordance with the...
6422189 Mechanical lash control apparatus for an engine cam  
A rocker arm assembly has a first arm for following a first or opening camshaft lobe, a second arm for following a second or closing camshaft lobe, and a pivot axis of the rocker arm therebetween....
6422187 Variable valve mechanism having an eccentric-driven frame  
A variable valve mechanism includes an elongate input shaft having a central axis. An input cam lobe is disposed on the input shaft and is eccentric relative to the central axis. A guide member is...
6422185 Method for operating a piston-type internal-combustion engine in the event of a temporary functional failure of an electromagnetic valve train  
A method for operating a piston-type internal-combustion engine having electromagnetic valve trains for actuating the cylinder valves, which respectively have an armature that can move back and...
6418894 Engaging and disengaging support element  
An engaging and disengaging support element is proposed, having a compression spring ( 21 ) constructed as a so-called “lost-motion spring” that concentrically surrounds an inner element ( 5 )...
6412460 Valve operating system in internal combustion engine  
A valve operating system in an internal combustion engine includes a cam shaft provided with a valve operating cam, a rocker arm having a pair of support wall portions which are integrally...
6412461 Valve resting mechanism for cylinder control type engine  
A rocker arm for rocking on a rocker arm shaft is constructed to include two arms: a first rocker arm rocked positively by the rotating motion of a cam; and a second rocker arm for actuating the...
6408806 Variable valve operating system of internal combustion engine enabling variation of working angle and phase  
A valve operating system of an internal combustion engine enabling both valve working angle and phase to be varied, includes a variable working angle control mechanism being responsive to a supply...
6405699 Roller follower guide orientation and anti-rotation feature  
A valve actuation sub-assembly for an internal combustion engine, the sub-assembly being adapted for attachment to an engine block ( 11 B) and including a conventional roller follower ( 21 ) and a...
6401675 Variable valve gear device of internal combustion engine  
A variable valve operating system of an internal combustion engine comprises a first variable mechanism 1 capable of variably controlling a lift characteristic of an intake valve 12 , and a...
6401677 Cam rocker variable valve train device  
A variable valve train device for installation in an internal combustion engine to controllably vary the intake valve lift, open duration, and timing. A rotary camshaft has a cam lobe for rotation...
6401676 Valve device having valve resting mechanism used for internal combustion engine  
A valve resting mechanism, for use with an internal combustion engine, which is capable of facilitating assembly of a valve lifter in the valve device. A valve device having a valve resting...
Matches 651 - 700 out of 1320 < 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >