| Patent Number |
Title Of Patent |
Date Issued |
| 7591237 |
Electromechanical variable valve actuator with a spring controller |
September 22, 2009 |
| 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 electromechanical actuator comprises a housing, first and second electromagnets rigidly dispose |
| 7536984 |
Variable valve actuator with a pneumatic booster |
May 26, 2009 |
| Actuators, and corresponding methods and systems for controlling such actuators, provide independent valve control with a large initial or opening force. In an exemplary embodiment, an actuator includes a driver further including a housing defining a longitudinal axis and first and s |
| 7421987 |
Variable valve actuator with latch at one end |
September 9, 2008 |
| Actuators and corresponding methods and systems for controlling such actuators offer efficient, fast, flexible control with large forces. In an exemplary embodiment, an fluid actuator includes a housing having first and second fluid ports, an actuation cylinder in the housing definin |
| 7370615 |
Variable valve actuator |
May 13, 2008 |
| Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine achieve fuel econo |
| 7302920 |
Variable valve actuator |
December 4, 2007 |
| 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 and second ends in |
| 7290509 |
Variable valve actuator |
November 6, 2007 |
| Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine achieve fuel econo |
| 7213549 |
Variable valve actuator |
May 8, 2007 |
| Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine achieve fuel econo |
| 7194991 |
Variable valve actuator |
March 27, 2007 |
| 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 and second ends in |
| 7156058 |
Variable valve actuator |
January 2, 2007 |
| 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 actuation cylinder in a ho |
| 6920845 |
Engine cooling disc valve |
July 26, 2005 |
| A multi-port rotary valve used to distribute coolant to an engine cooling system comprises a valve body having a plurality of outlet ports for directing coolant flow to a radiator circuit, a heater circuit, and an auxiliary circuit. An internal gear driven rotary disc includes a gear |
| 6631633 |
Method and apparatus for calibrating a variable force solenoid |
October 14, 2003 |
| A variable force solenoid valve assembly generally includes a coil, magnetic pole, armature, and one or more variable size air gaps that are disposed within the solenoid. The solenoid may be calibrated by first energizing the solenoid coils and determining a corresponding desired hyd |
| 6616059 |
Hybrid vehicle powertrain thermal management system and method for cabin heating and engine warm |
September 9, 2003 |
| A powertrain thermal management system for a hybrid vehicle having provisions for passenger cabin heating and engine warm up. |
| 6584885 |
Variable lift actuator |
July 1, 2003 |
| An actuator comprises a cylinder, a first, second and third port, an actuation piston, a control piston and a control spring. The cylinder defines a longitudinal axis and comprises a first and second end. The first port communicates with the first end of the cylinder, the second port |
| 6536388 |
Variable engine valve control system |
March 25, 2003 |
| A valve control system for an internal combustion engine includes a housing comprising a cylinder defining a longitudinal axis, an exhaust port, a piston disposed in the cylinder and an engine valve operably connected to the piston. An exhaust member is disposed in the housing and is var |
| 6505584 |
Variable engine valve control system |
January 14, 2003 |
| A discrete lift, variable timing (DLVT) engine valve control system for an internal combustion engine includes a plurality of electrohydraulic valves. The plurality of electrohydraulic valves are operable between at least an open and closed position. Each of the plurality of electroh |
| 5992582 |
Electrorheological rotary pure-shear damping devices |
November 30, 1999 |
| An electrorheological damping device for reducing translational vibration between two bodies comprises a rotary electrorheological damper and transmission means for converting the translational vibration between the two bodies to the rotary motion of the rotary electrorheological damper. |
