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| Number | Title | Issue Date |
| 7946262 | Lifter oil manifold assembly for variable activation and deactivation of valves in an internal combustion engine A lifter oil manifold assembly for variable actuation of engine valves having first (top) and second (valve) plates having portions of oil control and oil exhaust passages formed therein. The assembly further includes a carrier member having an oil supply passage in... | 05/24/2011 |
| 7426912 | Oil supply circuit for cylinder deactivation system An oil supply circuit for a cylinder deactivation system having a simple structure and capable of being installed at a cylinder head without needing additional extraneous elements by forming an oil line within a cam shaft. An embodiment may include a hydraulic pump,... | 09/23/2008 |
| 7404382 | Variable engine valve control system with pressure difference A kind of variable engine valve control system with pressure difference comprises hydraulic supply equipment, hydraulic actuator apparatus, valve and spring controlling piston balance. The hydraulic actuator comprises hydraulic cylinder, piston and piston rod. The p... | 07/29/2008 |
| 7347172 | Hydraulic valve actuation system with valve lash adjustment A hydraulic valve actuation system has a hydraulic actuator connected with a valve in an engine. The hydraulic actuator has a boost pin enclosing a drive pin in a casing. The drive pin connects with and defines a valve lash with a valve stem of the valve. The hydrau... | 03/25/2008 |
| 7341033 | Cylinder head cover First and second attachment portions 6, 8 are formed integrally with a main body 4 and extend along the longitudinal direction of the main body 4. A hydraulic oil supply portion 14 is formed integrally with the main body 4 and exte... | 03/11/2008 |
| 7341028 | Hydraulic valve actuation systems and methods to provide multiple lifts for one or more engine air valves Hydraulic valve actuation systems and methods to provide multiple lifts for engine valves using fixed or hard stops at each lift. The fixed or hard stops provide a very repeatable selection of engine valve lifts dependent on engine operating conditions. For full val... | 03/11/2008 |
| 7314026 | Electronic valve actuator having hydraulic displacement amplifier An electronically controlled valve actuator having a hydraulic lever in the form of a fluid filled chamber, is used to amplify the motion of a magnetic armature and thereby achieve a desired valve displacement with reduced effective travel of the armature, reduced t... | 01/01/2008 |
| 7313918 | Alternative (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 |
| 7305944 | Control strategy for hydraulically-switched engine mechanisms A method for distributing lock pin ejections evenly over all the switchable mechanisms in a plurality of switchable mechanisms: establishing a limiting number of lock pin ejections; designating a primary switchable mechanism for the mode change upon command from an ... | 12/11/2007 |
| 7302920 | Variable valve actuator Actuators, and corresponding methods and systems for controlling such actuators, provide independent lift and timing control with minimum energy consumption. In an exemplary embodiment, an actuation cylinder in a housing defines a longitudinal axis and having first ... | 12/04/2007 |
| 7278388 | Engine starting for engine having adjustable valve operation A method for controlling an engine having at least two cylinders, at least one of which having at least an adjustable valve, the method comprising before engine rotation closing electrically actuated valves in at least a first and a second cylinder; fueling at least... | 10/09/2007 |
| 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 surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7258088 | Engine valve actuation system An engine valve actuation system is provided. The engine valve actuation system includes an intake valve that is moveable between a first position to prevent a flow of fluid and a second position to allow a flow of fluid. A cam assembly is configured to move the int... | 08/21/2007 |
| 7255075 | Engine valve actuation system An engine valve actuation system is provided. An intake valve is moveable between a first position to prevent a flow of fluid and a second position to allow a flow of fluid. A cam assembly is connected to move the intake valve between the first position and the seco... | 08/14/2007 |
| 7243624 | Electrically operated valve for controlling flow of hydraulic fluid The present invention relates to an electrically operated valve (10), which has a valve housing (11); a spool (12); a first fluid conduit (14) connecting the valve (10) with a source of pressurized fluid; a second fluid conduit ( | 07/17/2007 |
| 7228826 | Internal combustion engine valve seating velocity control The present disclosure provides an engine having a gas exchange valve and an actuator for the gas exchange valve, and also a method of reducing valve seating impact velocity. The actuator includes a body having a fluid inlet and a fluid outlet. A plunger is reciproc... | 06/12/2007 |
| 7210439 | 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, 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 |
| 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. Between the actuating piston and the stem of the respective valve is... | 05/01/2007 |
| 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) axially movable in its bore (3) and with rot... | 04/24/2007 |
| 7204212 | Camless 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 |
| 7201121 | Combustion engine including fluidically-driven engine valve actuator Engines and methods of controlling an engine may involve one or more fluidically driven actuators associated with engine intake and/or exhaust valves. In some examples, the actuators may be placed in flow communication with high pressure fluid from one source and/or... | 04/10/2007 |
| 7194991 | Variable valve actuator Actuators, and corresponding methods and systems for controlling such actuators, provide independent lift and timing control with minimum energy consumption. In an exemplary embodiment, an actuation cylinder in a housing defines a longitudinal axis and having first ... | 03/27/2007 |
| 7178491 | Control system and method for engine valve actuator A system and method for controlling a variable valve actuation system for an engine is provided. An engine valve is moved between a first position where the engine valve blocks a flow of fluid and a second position where the engine valve allows a flow of fluid. Flui... | 02/20/2007 |
| 7178489 | Variable valve system of internal combustion engine and hydraulic actuator In a hydraulic actuator comprising a hydraulic piston, a hydraulic cylinder and a hydraulic pressure source wherein said hydraulic piston has a larger area exposed to pressure on the side of the control chamber than on the side of oil supply chamber of said hydrauli... | 02/20/2007 |
| 7178490 | Device for hydraulic valve lift switching The invention relates to a device for electrohydraulic valve lift switching with a hydraulically activatable actuating element for bringing about valve lift switching, which is connected to an oil line, whereby the action of pressurized oil on the actuating element ... | 02/20/2007 |
| 7178488 | Device comprising at least one functional unit of a camshaft adjusting device In an arrangement comprising at least one operating unit of a camshaft adjusting device for an internal combustion engine, the operating unit and at least one ventilation unit of a ventilation device are combined in an assembly module. ... | 02/20/2007 |
| 7178493 | Method and system to avoid piston-valve collision A method and system to avoid collision of piston and engine valves is provided. This facilitates use of a fully flexible variable valve actuation system over its operating range, without arbitrary constraints. Included is actuation control of the engine valve, deter... | 02/20/2007 |
| 7174866 | Direct pressure feed air bleed system A manifold assembly includes a pressure feed orifice that directly connects an inlet circuit to a control circuit of the manifold. This direct connection between the pressure inlet to the control circuit allows air to be bled out of the manifold assembly. Low pressu... | 02/13/2007 |
| 7162986 | Cylinder head cover First and second attachment portions 6, 8 are formed integrally with a main body 4 and extend along the longitudinal direction of the main body 4. A hydraulic oil supply portion 14 is formed integrally with the main body 4 and exte... | 01/16/2007 |
| 7162991 | Lightweight four-stroke engine A lightweight, four stroke engine includes a crankcase enclosure and at least one piston assembly disposed within the crankcase enclosure. The piston assembly cooperates with the crankcase enclosure to provide an internal pressure to the crankcase enclosure which va... | 01/16/2007 |
| 7162982 | Hydraulic valve actuator for reciprocating engine A hydraulic valve actuator for reciprocating engine includes at least a hydraulic cylinder (3) for opening at least one valve (2) via at least one valve opening selector (11) with at least one hydraulic positive displacement pump (4) wher... | 01/16/2007 |
| 7156058 | Variable valve actuator Actuators, and corresponding methods and systems for controlling such actuators, provide independent lift and timing control with minimum energy consumption, while supplying sufficient supplemental energy to overcome friction. In an exemplary embodiment, an actuatio... | 01/02/2007 |
| 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. Between the actuating piston and the stem of the respective valve is... | 11/28/2006 |
| 7134408 | Device for the control of gas exchange valves A device for controlling gas-exchange valves of an internal combustion engine is provided, which device has hydraulic valve actuators each allocated to one gas-exchange valve. Each valve actuator has an actuating piston acting on the gas-exchange valve, and two hydr... | 11/14/2006 |
| 7108751 | Method and apparatus for determining consumable lifetime A plasma processing device comprising a gas injection system is described, wherein the gas injection system comprises a gas injection assembly body, a consumable gas inject plate coupled to the gas injection assembly body, and a pressure sensor coupled to a gas inje... | 09/19/2006 |
| 7089896 | Device for controlling gas exchange valves A device for controlling gas exchange valves of an internal combustion engine, which has hydraulic valve positioners, each having a positioning piston acting on the gas exchange valve and two hydraulic working chambers, delimited by the positioning piston, of which ... | 08/15/2006 |
| 7086358 | Method and device for controlling the speed of the valves of an internal combustion engine A method of controlling the speed of the valves in an electro-hydraulic actuation unit for the valves of an internal combustion engine in which the pressure of the fluid in the hydraulic actuator of the valve is controlled during the final phase of closure of a valv... | 08/08/2006 |
| 7077083 | Electro-hydraulic lost-motion valve train An electro-hydraulic lost motion system for variable valve activation including a master piston and an accumulation piston in a first bore, defining a hydraulic pressure chamber therebetween, in response to rotation of an engine cam. A slave piston in the engine hea... | 07/18/2006 |
| 7069887 | Engine valve actuation system An engine valve actuation system is provided. An intake valve is moveable between a first position to prevent a flow of fluid and a second position to allow a flow of fluid. A cam assembly is connected to move the intake valve between the first position and the seco... | 07/04/2006 |
| 7059296 | Method for auto-ignition operation and computer readable storage device The invention relates to an internal combustion engine comprising a fuel injector (2) for each cylinder; a fuel injection control unit (4) for controlling fuel injection quantity and a piston (5) in each cylinder whose compression action causes ... | 06/13/2006 |
