Abstract:
An energy conversion system transfers energy between an energy source, or storage unit, and an electric device via a first port and a second port and at least one of receives and provides energy via a third port.
Abstract:
An electric drive system having a power source which provides power to an electric motor through an electric motor control. Discharging of stored capacitor energy of a capacitor coupled between the power source and the electric motor controller is provided by controlling energy transfer from the capacitor to the electric motor.
Abstract:
A valve actuator for an internal combustion engine is described having a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside said coil and positioned at an angle relative to a direction of movement of an armature.
Abstract:
A bi-directional dual coil half bridge converter adapted to be coupled to a dual coil actuator of a cylinder valve in an internal combustion engine is described. In one example, the converter has a first and second capacitor and a voltage source, where the converter is actuated via switches to individually energizing coils in said dual coil actuator. A voltage regulator is also shown for maintaining midpoint voltage during unequal loading of different actuator coils in the converter.
Abstract:
A method for initializing valves of an engine having a starting apparatus is disclosed. The engine may have electromechanically actuated cylinder valves. The method comprises moving at least a first valve away from a neutral position of the first valve before the engine is rotated by said starting apparatus; and moving at least a second valve away from a neutral position of the second valve after the engine is rotated by said starting apparatus.
Abstract:
An electronically controlled valve actuator having an armature, a valve, and a coupler for coupling the actuator to the valve with motion of the armature in a first direction moving the second piston in a second direction. The actuator includes an electromagnet, an armature disposed adjacent to the electromagnetic, and a fluid-containing chamber. The fluid-containing chamber includes a first piston providing a first wall portion of the chamber and a second piston providing a second wall portion of the chamber. The first piston is coupled to the armature and the second piston is coupled to a valve. Activation of the electromagnet moves the first piston in a first direction, such motion of the first piston in the first direction driving fluid in the chamber to move the second piston in an opposite direction.
Abstract:
A valve actuator for an internal combustion engine is described having a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside or outside said coil and positioned at an angle relative to a direction of movement of an armature. Further, various recesses, indentations, chamfers, bevels, and/or depressions may be included to affect flux leakage, and/or force generation.
Abstract:
An energy conversion system transfers energy between an energy source, or storage unit, and an electric device via a first port and a second port and at least one of receives and provides energy via a third port.
Abstract:
An inductor includes a core that has a window. The core includes a first core member and a second core member. A first winding is coupled to the first core member and a second winding is coupled to the second core member. A floating center leg is coupled between, but not attached to, the first and second core members. The floating center leg is conductively enabling flux flow between the first core member and the second core member.
Abstract:
An inductor includes a core that has a window (164). The core includes a first core member and a second core member. A first winding is coupled to the first core member and a second winding is coupled to the second core member. A shell surrounds the core. Pairs of gaps between the core and the shell provide flux paths.