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Match Document Document Title
7380531 Variable valve drive for changing the control timing of cam-actuated gas-exchange valves  
A variable valve drive for changing control timing of cam-actuated gas-exchange valves of an internal combustion engine is provided, with a tappet ( 6 a , 6 b , 6 c ), which, with convex cam...
7350492 Guide gib for the valve operating mechanism of an internal combustion engine  
In a guide gib for the valve operating mechanism of an internal combustion engine, having holding spaces ( 12, 13 ), which are arranged in the gib ( 8 ) at intervals one behind the other, for valve...
7328676 Hydraulic valve play compensation element  
A hydraulic valve play compensation element for an internal combustion engine is provided as a reverse-spring/free-ball element, with a cylindrical housing, a cylindrical piston ( 21 ) guided...
7322329 Assembly process for hydraulic valve lifters to reduce variation in valve lift  
Valve lift variation associated with a deactivation roller hydraulic valve DRVHL (DRHVL) can result in unacceptable valve overlap and idle conditions for an internal combustion engine. Two sources...
7299778 Switchable cam follower  
The invention proposes a switchable cam follower ( 1 ) for a valve train of an internal combustion engine, said cam follower comprising two elements ( 2, 3 ) telescoped into each other and, axially...
7273026 Roller follower body  
The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner...
7261075 Hydraulic support element  
The invention relates to a hydraulic support element ( 1 ) for a valve gear for an internal combustion engine. Said element consists of a cylindrical hollow case ( 2 ) in whose bore hole ( 3 ) a...
7246590 Valve train of an internal combustion engine comprising a tappet and a tappet pushrod  
The invention proposes a valve train ( 1 ) of an internal combustion engine comprising a tappet ( 7 ) and a tappet pushrod ( 1 ) that is actuated by said tappet ( 7 ), said tappet pushrod ( 1 )...
7246584 Force-transmitting arrangement for a valve train of an internal-combustion engine  
A force-transmitting arrangement ( 4 ) for a valve train ( 1 ) of an internal-combustion engine ( 2 ) is provided with hydraulic valve play compensation device ( 6 ) with a hollow cylindrical...
7243629 Hydraulic valve lifter assembly  
A hydraulic valve lifter assembly including a lifter body and a cam follower. The cam follower is mounted to an end of the lifter body wherein the lifter body has a first diameter over a first body...
7219639 Drag lever of a valve mechanism in an internal combustion engine  
Disclosed is a drag lever ( 1 ) comprising two side walls ( 2, 3 ) which are connected together by a transversal bar ( 4 ) which is arranged on an end ( 6 ) of the lower side ( 5 ) thereof on an...
7210438 Internal combustion engine having valves with variable actuation each provided with a hydraulic tappet at the outside of the associated actuating unit  
In an internal combustion engine with variable actuation valves, each variable actuation valve is actuated by an actuator assembly including an actuating piston slidably mounted in a guide bushing....
7207303 Switching element  
A switch element ( 1 ) is proposed for valve shut-off, fabricated as cam follower for a plunger rod valve drive of an internal combustion engine, having an outer part ( 2 ) and an inner element ( 4...
7146955 Hydraulic tappet clearance compensation device  
The invention relates to a hydraulic tappet clearance compensation device ( 1 ) for a valve gear of an internal combustion engine, the high pressure chamber ( 8 ) of which device can be rapidly and...
7146954 Hydraulic valve-lash-adjusting element  
A reverse spring hydraulic valve-lash-adjusting element for the valve train of an internal combustion engine having a plunger ( 1 ), in the plunger head ( 2 ) of which a control valve ( 5 ) is...
7146953 Mechanical valve play compensation element for a valve drive on a piston combustion engine  
The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part ( 1 ) which is axially displaceable in...
7140336 Internal combustion engine with valves with variable actuation which are driven by a single pumping piston and controlled by a single solenoid valve for each engine cylinder  
In an internal combustion engine with variable actuation valves, each variable actuation valve is actuated by an actuator assembly including an actuating piston slidably mounted in a guide bushing....
7137374 Adjustable hydraulic valve lifter  
An adjustable hydraulic valve lifter has a lifter body and an internal cylindrical body. The lifter body has a first longitudinally cylindrical internal bore and a first substantially closed lower...
7131411 Adjustable fast bleed lifter  
A limited leak-down variable duration lifter and its adjustment is provided to maximize performance gains at low engine rpm when used with a conventional cam and more particularly with a...
7117833 Readily-fillable hydraulic valve lifter assembly  
A hydraulic valve lifter including venting means to assure venting of air through the lifter and filling thereof with oil during pre-start filling of the engine oil galleries after engine assembly....
7104232 Deactivation roller hydraulic valve lifter  
A deactivation valve lifter includes a lifter body. The lifter body has a first end configured for engaging a cam of an engine and at least one annular pin chamber. A pin housing includes a pin...
7089900 Hydraulic lash adjuster and improved method of assembly thereof  
A hydraulic lash adjuster ( 11 ) for an internal combustion engine, and an improved method of assembly of such a lash adjuster. The lash adjuster ( 11 ) is of the type having a body ( 13 ), a...
7069888 System and method for valve actuation  
The present invention is directed to a system and method for actuating an engine valve. In one embodiment, the present invention is a system for providing exhaust gas recirculation (EGR) in an...
7059287 Switched cam follower or switched support element of a valve gear of an internal combustion engine  
A switchable cam follower ( 1 ) or a switchable support element of a valve train of an internal combustion engine, said cam follower or support element comprising an outer part ( 2 ) which is...
7059284 Internal combustion engine having valves with variable actuation and hydraulic actuating units which control the valves by means of rocker arms  
In an internal combustion engine provided with valves with variable actuation, each variable actuation valve is controlled by a hydraulic actuator unit through a rocker arm.
7055479 Coupling mechanism  
The invention proposes a coupling mechanism ( 1 ) for relatively movable elements ( 2, 3 ) of a switchable cam follower ( 4 ) of a valve train of an internal combustion engine, a high lift being...
7044095 Roller tappet with cold advance  
A cold advance device for advancing the injection beginning in cold condition diesel engine with single plunger pumps, by means of which the injection onset is adjusted in cold conditions and also...
7036481 Switching element for a valve drive of an internal combustion engine  
A switching element ( 1 ) for a valve drive of an internal combustion engine is provided, preferably for deactivating a valve. The switching element has an outer section ( 2 ), in addition to an...
7036465 Two-stroke and four-stroke switching mechanism  
A switching mechanism capable of switching between a two-stroke and a four-stroke operation of an engine as desired, wherein the switching mechanism is switchable between engagement with a first...
6990935 Pivoting lifter control system using spool valve and check valve to recirculate oil  
An internal combustion engine that has a camshaft having a plurality of cam lobes, a plurality of valves where each of the valves are actuated by a lifter actuated by the camshaft with a cam lobe....
6981476 Internal combustion engine with a single camshaft which controls exhaust valves mechanically and intake valves through an electronically controlled hydraulic device  
A multiple cylinder engine is described, provided with an electronically controlled hydraulic system for actuating the intake valves, in which intake valves and exhaust valves are controlled by a...
6964252 Valve lifter for internal combustion engine  
A valve lifter is disclosed comprising a lifter housing having a receiver, a switch retainer having at least one bore, and a key disposed in the at least one bore. The key is movable into the...
6953016 Tappet in a valve train of an internal combustion engine  
The invention proposes a tappet ( 1 ) in a valve train of an internal combustion engine having a bottom camshaft for acting on a tappet push rod, said tappet being arranged with a housing ( 2 ) for...
6935286 Connection between a stem end on a gas exchange valve in an internal combustion engine and a sleeve-like actuator body of a valve actuator  
The present invention relates to a connection between a shaft end of a gas exchange valve of an internal combustion engine and a sleeve-shaped actuating element of a valve actuator, which is guided...
6920857 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...
6918364 Multicylinder engine with valve variable actuation, and an improved valve braking device therefor  
Described herein is a multicylinder internal-combustion engine provided with an electronically controlled hydraulic device for controlling variable actuation of the valves of the engine. The final...
6901893 Valve deactivator assembly  
A valve deactivator assembly according to aspects of the present invention includes an inner body member that is slidably disposed in a longitudinal bore defined by an outer body member. Two...
6880507 Internal combustion engine with switchable cam follower  
An internal combustion engine having a valve train that includes a switchable cam follower is provided. The cam follower ( 20 ) has a generally cylindrical shape and can move longitudinally in a...
6834628 Mechanical valve play compensation element for a valve drive on a piston combustion engine  
The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part ( 1 ) which is axially displaceable in...
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...
6782857 Race car valve lifter  
A race car valve lifter for more reliable engine function for a race car. The race car valve lifter includes a tubular member having open first and second ends and a bore being disposed...
6776129 Hydraulic actuator for a gas exchange valve  
A hydraulic actuator for gas exchange valves of internal combustion engines is disclosed, in which the lifting of the gas exchange valve from the valve seat is effected with great force. The...
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...
6748914 Refillable metering valve for hydraulic valve lifters  
Oil metering valve means in a hydraulic valve lifter configured such that a metering plate cooperates with a pushrod seat to meter the flow of oil in a forward direction. The metering means is also...
6736092 Internal-combustion engine with an electronically controlled hydraulic system for actuation of the valves and means for compensating changes in the operating conditions of the hydraulic  
In an internal-combustion engine equipped with an electronically controlled hydraulic system for variable actuation of the inlet and/or exhaust valves of the engine, the hydraulic system for...
6732687 Lash adjuster with locking balls deactivation  
A generally conventional lash adjuster is modified by incorporating a coaxially oriented hydraulic control piston assembly within the guide body. The control piston normally fixes latch means, such...
6718923 Hydraulic play compensation element for a valve gear of an internal combustion engine  
The aim of the invention is to functionally improve a hydraulic play compensation element for a valve gear of an internal combustion engine. To this end, the play compensation element is...
6691652 Variable valve drive  
A variable valve drive for a cam-actuated lift valve of an internal combustion engine which is loaded by a closing pressure against the direction of opening, includes a hydraulic power generating...
6688266 Pressurized sealing groove for deactivating roller-follower  
A valve deactivation assembly ( 21 ) comprises part of the valve gear train for an internal combustion engine, and is disposed in a bore ( 55 ) defined by the A engine block ( 11 B). The assembly (...
6655329 Variable valve train for a cam activated lifting valve of an internal combustion engine  
The invention relates to a variable valve train ( 1 ) for a cam-actuated lifting valve ( 13 ) of an internal combustion engine, which valve ( 13 ) is loaded by a closing spring ( 13 a ) acting...
Matches 1 - 50 out of 365 1 2 3 4 5 6 7 8 >