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Class 123/90.22 - Plural valve trains, single actuator


Subclass of Class 123 - Internal-combustion engines
Definition: Device wherein one actuating element (cam) operates one
No. of patents: 142
Last issue date: 10/25/2011


1        
NumberTitleIssue Date
8042505Internal combustion engine comprising a variable valve drive
The invention relates to an internal combustion engine comprising a valve drive which is arranged in the region of the cylinder head and is used to actuate a valve. Said internal combustion engine comprises a first drive means that can be rotated about a first rotat...
10/25/2011
8006661Bridge and pivot foot arrangement for operating engine cylinder valves
An internal combustion engine has one or more engine cylinders (12) within which fuel is combusted and a pair of cylinder valves (14, 16) spring-biased (22, 24) closed but open in unison to place the respective cylinder in flow communication wit...
08/30/2011
7905208Valve bridge with integrated lost motion system
A system and method of actuating one or more engine valves is disclosed. In one embodiment, the system comprises: a valve train element; a rocker arm pivotally mounted on a shaft and adapted to rotate between a first position and a second position, the rocker arm se...
03/15/2011
7588005Dual intake valve assembly for internal combustion engine
An intake valve assembly of an internal combustion engine. The intake valve assembly comprises a primary valve, a secondary valve mounted about the primary valve coaxially therewith, a primary valve spring for normally biasing the primary valve toward a closed posit...
09/15/2009
7313918Alternative (reciprocating) engine with recirculation of exhaust gases intended for the propulsion of automobiles and method turbocharging these motors
A reciprocating engine includes a turbocharging unit that: supplies the intake manifold with air via a coolant; is supplied with gas by the exhaust manifold; and has the turbine supply pressure substantially equal to the compressor discharge pressure. At constant ai...
01/01/2008
7299776Valve assembly for an internal combustion engine
A valve assembly for an internal combustion engine includes: at least two valves supported by a pair of valve stem holders; a bracket; a closing actuator for pivoting and closing the valves upon contact with a closing lobe of a camshaft; one or more opening actuator...
11/27/2007
7273026Roller 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 surface configured to house a cylindrical insert the second cavity i...
09/25/2007
7263956Valve lifter assembly for selectively deactivating a cylinder
A valve lifter assembly for deactivating a cylinder in an internal combustion engine. The valve lifter assembly is provided with a plunger movably disposed within a bore of a main body member to controllably isolate the cam lift from the rocker arm and valve of the ...
09/04/2007
7225776Valvetrain with two-step switchable rocker and deactivating stationary lash adjuster
The invention provides a valvetrain configuration in an internal combustion engine in which a plurality of two-step rockers enable the engine poppet valves to switch between two lift profiles. In addition, a lost-motion stationary lash adjuster enables the deactivat...
06/05/2007
7210439Switching 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, particularly for valve deactivation, with a simple-to-implement measure for adjusting the coupling lash of its coupling means (8) in a receptacle (6
05/01/2007
7207303Switching 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) axially movable in its bore (3) and with rot...
04/24/2007
7204212Camless engine hydraulic valve actuated system
A method and apparatus for hydraulically actuating a gas exchange valve using a low-pressure, substantially constant flow fluid source applied to at least one actuator cylinder piston coupled to the gas exchange valve. The actuator piston slides within the actuator ...
04/17/2007
7185615Variable stroke engine
A variable stroke engine includes a connecting rod having one end thereof connected to a piston via a piston pin. A sub-rod is connected to a crankshaft via a crankpin and to the other end of the connecting rod. A control rod has one end thereof connected to the sub...
03/06/2007
7171929Method to estimate variable valve performance degradation
A system comprising of an engine having a first group of cylinders and a second group of cylinders, a first variable valve system in said first group, a second variable valve system in said second group, and a controller for determining degradation of operation of a...
02/06/2007
7150272Apparatus for an internal combustion engine
Method and arrangement for delivering EGR gas to combustion spaces in a multi-cylinder, four-stroke internal combustion engine. Each cylinder, with an associated piston, has at least one inlet valve and at least one exhaust valve (10) for controlling fluid in...
12/19/2006
7146953Mechanical 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 relation to a second pressure part (2) and which is fixed in su...
12/12/2006
7124721Control device for a gas exchange valve in an internal combustion engine
A control device for a gas exchange valve of an internal combustion engine having a multi-membered transmission comprising at least one driving element (1), actuating elements (2) each of which actuat...
10/24/2006
7055471Hydraulic lifter feed gallery with aeration removal orifice
An apparatus and method for providing lubricant to a plurality of hydraulic lifters in an internal combustion engine is disclosed, in which the amount of gas bubbles present in the lubricant provided to the lifters is reduced or eliminated so that lifter noise is re...
06/06/2006
7036483Diesel engine with dual-lobed intake cam for compression ratio control
Dual-lobed cams mounted on the intake camshaft of a diesel engine selectively retard timing of the intake valve closure. The purpose of retarding timing of the intake valves is to retard valve closing sufficiently to shorten the effective compression strokes of the ...
05/02/2006
7011056Variable timing device for reciprocating engines, engines comprising same and distribution and turbocharging method
The invention concerns a variable timing device for reciprocating engines with, at least two cam shafts (AC1, AC2) comprising, at least an intake valve (A) and at least an exhaust valve (E) actuated by said shafts, and means for shaft angular offset D
03/14/2006
7007665Outboard engine
An outboard engine has an internal combustion engine as a prime mover, a throttle valve device including a valve element and a valve shaft supporting the valve element, and combined with the internal combustion engine, a driven unit combined with the throttle valve ...
03/07/2006
7000579Valve system for internal combustion engine
A valve system is provided to eliminate a play at connection portions in a valve characteristic varying mechanism and to enhance the accuracy in control of valve operation characteristics. ...
02/21/2006
6978748Hydraulically controlled actuator for actuating gas exchange valve on the exhaust side of an internal combustion engine
A hydraulically controlled actuator for actuation of an exhaust-side gas exchange valve of an internal combustion engine, containing a control piston that is displaceable within a cylinder and, with piston sides facing away from one another, delimits pressure chambe...
12/27/2005
6964252Valve 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 receiver to lock the switch retainer against movement relative to the lift...
11/15/2005
6953016Tappet 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 axial displacement, but secured against rotation, in a gui...
10/11/2005
6951196Reciprocating engine with rocker valve gear
The reciprocating engine comprises a rocker valve gear, pistons which are fastened to a connecting rod and connected by crankshaft journals to a crankshaft, a balancer, and a camshaft which is driven by the crankshaft and in turn actuates rockers, the mentioned elem...
10/04/2005
6899065Radial-valve gear apparatus for barrel engine
A barrel engine has an elongated power shaft defining a longitudinal axis. A plurality of cylinders surround the longitudinal axis, with each having a closed end and an open end. An intake system introduces a combustible mixture of air and fuel into each of the cyli...
05/31/2005
6895925Internal combustion engine having three valves per cylinder
A valve train is disclosed for an internal combustion engine having a block, a camshaft in the block, and at least two push rods actuated by the camshaft. The valve train comprises first and second rockers, and three valves. The first rocker is actuated by one of th...
05/24/2005
6810840Internal combustion engine and method for the operation thereof
In an internal combustion engine including cylinders with inlet and outlet valves, a first inlet valve drive having a first degree of adjustability for operating an inlet valve of at least one cylinder and a second inlet valve drive having a second degree of adjusta...
11/02/2004
6779498Internal 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 and at least one exhaust valve per cylinder, which can be coupled via ...
08/24/2004
6722349Efficient internal combustion engine valve actuator
An engine with an efficient valve actuator is disclosed. The engine employs a first force to hold a valve of the engine open during a normal valve event and a second force to hold the exhaust valve open during an exhaust gas recirculation event. The valve actuator m...
04/20/2004
6701879Internal combustion engine
An internal combustion engine having at least one combustion cylinder that includes a combustion chamber provided with gas-exchange valves, and an electrohydraulic valve control device having valve actuators that actuate the gas-exchange valves. To reduce...
03/09/2004
6655330Offset variable valve actuation mechanism
A variable valve actuation (VVA) mechanism includes an output cam having a first output cam lobe and a second output cam lobe. A body portion adjoins and axially separates the first and second output cam lobes. The body portion includes an outer surface. ...
12/02/2003
6595170Hydraulic 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 closed position and is provided with associated restoring means...
07/22/2003
6481397Variable 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 running conditions. This is done without interference with oth...
11/19/2002
6467443Valve 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 arm. The connecting member has both a first condition whe...
10/22/2002
6390046Valve train with a single camshaft
A valvetrain with a single camshaft is disclosed. The valvetrain has one or more intake valves, and one or more exhaust valves per cylinder of an engine block. The valvetrain comprises a cylinder head. The valve head of each intake valve is removably seat...
05/21/2002
6357405Valve drive mechanism of four-stroke cycle engine
An improved variable valve timing mechanism that is operative to provide an arrangement for varying both the valve lift and lift curve in response to dynamic running conditions. A variable valve timing mechanism is also incorporated in the cam drive so as...
03/19/2002
6352062Roller rocker arm assembly
Internal combustion engine valve roller rocker arm system designed to manipulate horsepower output of an equipped engine. Each roller rocker arm system is formed of two arm members pivotally mounted to a common shaft and are joined together by a pin throu...
03/05/2002
6293237Variable lost motion valve actuator and method
A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, pivoting bridge, an adjustable tappet, and a valve stem. The pivoting bridge may include a first end for cont...
09/25/2001
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