Abstract: A system including: first switches to receive positive DC power to generate the AC power, a positive DC power rail to provide the positive DC power to the first switches, positive DC power tabs connected to the positive DC power rail, second switches to receive negative DC power to generate the AC power, a negative DC power rail to provide the negative DC power to the second switches, negative DC power tabs connected to the negative DC power rail; and AC power tabs to receive the AC power from the first switches and the second switches, wherein the positive DC power rail is provided in a first plane on a first side of the first switches and the second switches, and the negative DC power rail is provided in a second plane on a second side of the first switches and the second switches and opposite to the first side.

Abstract: A system includes a motor including: a stator; and a rotor including: a rotor shaft; a lamination stack including: a lamination yoke including a recess in an outermost surface of the lamination yoke and a first groove in the outermost surface of the lamination yoke; a lamination shoe in the recess of the lamination yoke, the lamination shoe including a second groove in an outermost surface of the lamination shoe; and one or more first magnets in the recess of the lamination yoke, each first magnet of the one or more first magnets including a first magnet groove, wherein the first groove of the lamination yoke, the second groove of the lamination shoe, and the first magnet groove are aligned along a first circumference of the lamination stack as a first lamination stack groove; and one or more carbon rings in the first lamination stack groove.

Abstract: A system may include a rotor, a stator disposed around the rotor, the stator includes a stator core and windings, the windings include end windings extending from a longitudinal end of the stator core. A system may include a cover for the end windings and disposed around the rotor, the cover is configured to transfer a cooling fluid to cool the end windings, and the cover includes: a body to cover the end windings, the body including a cavity for the cooling fluid, an inlet disposed in the body for the cooling fluid to enter the cavity; and an outlet disposed in the body for the cooling fluid to exit the cavity, the outlet is disposed at a portion of the body opposite to the inlet, a first radial width of the cavity at the inlet is greater than a second radial width of the cavity at the outlet.

Abstract: A system including: first switches to receive positive DC power to generate the AC power, a positive DC power rail to provide the positive DC power to the first switches, positive DC power tabs connected to the positive DC power rail, second switches to receive negative DC power to generate the AC power, a negative DC power rail to provide the negative DC power to the second switches, negative DC power tabs connected to the negative DC power rail; and AC power tabs to receive the AC power from the first switches and the second switches, wherein the positive DC power rail is provided in a first plane on a first side of the first switches and the second switches, and the negative DC power rail is provided in a second plane on a second side of the first switches and the second switches and opposite to the first side.

Abstract: A system includes a motor including: a stator; and a rotor including: a rotor shaft; a lamination stack including: a lamination yoke including a recess in an outermost surface of the lamination yoke and a first groove in the outermost surface of the lamination yoke; a lamination shoe in the recess of the lamination yoke, the lamination shoe including a second groove in an outermost surface of the lamination shoe; and one or more first magnets in the recess of the lamination yoke, each first magnet of the one or more first magnets including a first magnet groove, wherein the first groove of the lamination yoke, the second groove of the lamination shoe, and the first magnet groove are aligned along a first circumference of the lamination stack as a first lamination stack groove; and one or more carbon rings in the first lamination stack groove.

Abstract: A system includes a rotor core; a rotor stack extending circumferentially from the rotor core, the rotor stack including: a first end; a second end opposite to the first end; and a first slot in the rotor stack, the first slot extending from the first end to the second end; and a hairpin cooling pipe in the first slot of the rotor stack.

Abstract: A system for an electric vehicle includes a power switch configured to convert DC power from a battery to AC power to drive a motor, and a three-dimensionally printed heat sink (3D heat sink) coupled to the power switch.

Abstract: A rotor assembly includes a shaft defining a lubricant inlet channel for receiving a lubricant and a lamination stack. The lamination stack is rotatably coupled to the shaft, extends between first and second lamination stack ends, and defines a lubricant cooling channel in fluid communication with the lubricant inlet channel. The rotor assembly also includes a first end cap adjacent to the first lamination stack end and a second end cap adjacent to the second lamination stack end. One of the first end cap and the second end cap defines an end cap inlet at a first radial distance from the shaft, a lubricant outlet channel defined to extend at least partially radially inward toward the shaft, and an end cap outlet at a second radial distance from the shaft which is less than the first radial distance for expelling the lubricant.

Abstract: A system for a power switch module for an inverter includes a Silicon (Si) power switch configured to pass current in an on state based on an Si gate driving signal, a Silicon Carbide (SiC) power switch configured to pass current in an on state based on an SiC gate driving signal, an Si gate driver configured to provide the Si gate driving signal to operate the Si power switch when a current requirement of the inverter is at or above a threshold, and an SiC gate driver configured to provide the SiC gate driving signal to operate the SiC power switch when the current requirement of the inverter is below the threshold.

Abstract: A rotor assembly includes a shaft defining a lubricant inlet channel for receiving a lubricant and a lamination stack. The lamination stack is rotatably coupled to the shaft, extends between first and second lamination stack ends, and defines a lubricant cooling channel in fluid communication with the lubricant inlet channel. The rotor assembly also includes a first end cap adjacent to the first lamination stack end and a second end cap adjacent to the second lamination stack end. One of the first end cap and the second end cap defines an end cap inlet at a first radial distance from the shaft, a lubricant outlet channel defined to extend at least partially radially inward toward the shaft, and an end cap outlet at a second radial distance from the shaft which is less than the first radial distance for expelling the lubricant.

Abstract: A system for a power switch module for an inverter includes a Silicon (Si) power switch configured to pass current in an on state based on an Si gate driving signal, a Silicon Carbide (SiC) power switch configured to pass current in an on state based on an SiC gate driving signal, an Si gate driver configured to provide the Si gate driving signal to operate the Si power switch when a current requirement of the inverter is at or above a threshold, and an SiC gate driver configured to provide the SiC gate driving signal to operate the SiC power switch when the current requirement of the inverter is below the threshold.

Abstract: A control screw for a camshaft phase shifter of an internal combustion engine extends along a longitudinal axis. The control screw includes a screw body. The control screw also includes a tubular spool assembly having a control valve assembly with at least three rigid rings and at least two valves. Each valve includes at least one vane connected to two flexible arms. The valve is connected to two consecutive rigid rings.

Abstract: A control screw for a camshaft phase shifter of an internal combustion engine extends along a longitudinal axis. The control screw includes a screw body. The control screw also includes a tubular spool assembly having a control valve assembly with at least three rigid rings and at least two valves. Each valve includes at least one vane connected to two flexible arms. The valve is connected to two consecutive rigid rings.

Abstract: A valve for restricting flow through an opening of a control valve in a vehicle engine includes a tubular shell having a central axis that extends between open ends of the shell. The shell also includes a base and a blocking element having an interior surface exposed to an internal space of the shell and an exterior surface exposed to an exterior space surrounding the shell. The blocking element is connected to the base by a deflectable connector such that the blocking element can be deflected towards the central axis in response to fluid pressure acting on the exterior surface, and away from the central axis in response to fluid pressure acting on the interior surface so as to selectively block the opening.

Abstract: A valve for restricting flow through an opening of a control valve in a vehicle engine includes a tubular shell having a central axis that extends between open ends of the shell. The shell also includes a base and a blocking element having an interior surface exposed to an internal space of the shell and an exterior surface exposed to an exterior space surrounding the shell. The blocking element is connected to the base by a deflectable connector such that the blocking element can be deflected towards the central axis in response to fluid pressure acting on the exterior surface, and away from the central axis in response to fluid pressure acting on the interior surface so as to selectively block the opening.

Abstract: A camshaft phaser is provided for controllably varying the phaser relationship between a crankshaft and a camshaft in an internal combustion engine which includes a camshaft bearing for supporting the camshaft and which defines a mounting bore for mounting the camshaft phaser to the internal combustion engine. The camshaft phaser includes a housing with a gear drive unit disposed within the housing. The gear drive unit includes an input gear member and an output gear member such that the input gear member is attachable to the crankshaft and such that the input gear member is attached to an output shaft of an electric motor. The output gear member is attachable to the camshaft such that rotation of the input gear member by the electric motor causes relative rotation between the crankshaft and the camshaft. The camshaft phaser is disposed between the mounting bore and the camshaft bearing.

Abstract: A camshaft phaser is provided for controllably varying the phaser relationship between a crankshaft and a camshaft in an internal combustion engine which includes a camshaft bearing for supporting the camshaft and which defines a mounting bore for mounting the camshaft phaser to the internal combustion engine. The camshaft phaser includes a housing with a gear drive unit disposed within the housing. The gear drive unit includes an input gear member and an output gear member such that the input gear member is attachable to the crankshaft and such that the input gear member is attached to an output shaft of an electric motor. The output gear member is attachable to the camshaft such that rotation of the input gear member by the electric motor causes relative rotation between the crankshaft and the camshaft. The camshaft phaser is disposed between the mounting bore and the camshaft bearing.

Abstract: A camshaft phaser includes a housing having a housing bore extending along an axis and a plurality of lobes extending radially inward. The camshaft phaser also includes a stroke limiter having a central hub with a plurality of vanes extending radially outward such that the vanes are interspersed with lobes. The camshaft phaser also includes a harmonic gear drive unit disposed operationally between the housing and the stroke limiter, the harmonic gear drive unit being connected to a rotational actuator for imparting rotation on the harmonic gear drive unit such that rotation of the harmonic gear drive unit by the rotational actuator causes relative rotation between the housing and the stroke limiter. The amount of relative rotation between the housing and the stroke limiter is limited by at least one of the plurality of lobes and at least one of the plurality of vanes.

Abstract: A camshaft phaser includes a housing having a housing bore extending along an axis and a plurality of lobes extending radially inward. The camshaft phaser also includes a stroke limiter having a central hub with a plurality of vanes extending radially outward such that the vanes are interspersed with lobes. The camshaft phaser also includes a harmonic gear drive unit disposed operationally between the housing and the stroke limiter, the harmonic gear drive unit being connected to a rotational actuator for imparting rotation on the harmonic gear drive unit such that rotation of the harmonic gear drive unit by the rotational actuator causes relative rotation between the housing and the stroke limiter. The amount of relative rotation between the housing and the stroke limiter is limited by at least one of the plurality of lobes and at least one of the plurality of vanes.

Abstract: An internal combustion includes a crankshaft and a camshaft rotatable by the crankshaft. The internal combustion engine also includes an oil source, an engine cover, and a drive member disposed within the engine cover for transferring rotational motion from the crankshaft to the camshaft. A camshaft phaser actuated by an electric motor is disposed within the engine cover for controllably varying the phase relationship between the crankshaft and the camshaft. A supply passage communicates oil from the oil source to the camshaft phaser in order to lubricate the camshaft phaser and a drain passage drains oil from the camshaft phaser to the oil source. A sealing arrangement defines a dry zone within the engine cover to isolate the drive member from oil used to lubricate the camshaft phaser.