A battery system including a removable battery pack, including a plurality of battery cells and an interface for electrically and mechanically coupling to a load bearing device; a vehicle, including a power station for providing power to drive the vehicle, the power station including a port for accepting the removable battery pack; and a power tool including a port for accepting the removable battery pack.

A switchable powertrain comprises at least four points of freedom. The switchable powertrain comprises a main gear set configured for gear ratio selection, the main gear set comprising main gears coupled to a main shaft and second gears coupled to a second shaft. An adapter comprises a first selective coupling configured to selectively couple to the main shaft, and a second selective coupling configured to selectively couple to the second shaft. A first torque source and a clutch are configured for selectively coupling or decoupling first torque to the main shaft. A second torque source is configured for selectively outputting second torque to the first selective coupling or to the second selective coupling.

A switchable powertrain comprises at least four points of freedom. The switchable powertrain comprises a main gear set configured for gear ratio selection, the main gear set comprising main gears coupled to a main shaft and second gears coupled to a second shaft. An adapter comprises a first selective coupling configured to selectively couple to the main shaft, and a second selective coupling configured to selectively couple to the second shaft. A first torque source and a clutch are configured for selectively coupling or decoupling first torque to the main shaft. A second torque source is configured for selectively outputting second torque to the first selective coupling or to the second selective coupling.

An electric walk behind greens mower includes an electric reel motor rotating a cutting reel; an electric traction motor rotating at least one traction drive roller; and an electronic control unit commanding the electric traction motor and the electric reel motor to rotate at reduced speeds during a turn if an electronic signal indicates a deviation from a normal walk speed. The electric walk behind greens mower also may include a battery management system that activates a low voltage power supply if a key switch is turned from the off position to the run position, and that provides a start signal to an electronic control unit if the key switch is momentarily turned from the run position to the start position whereby the electronic control unit activates a high voltage power supply to the electric reel motor and the electric traction motor.

An operating strategy optimized for dynamic requirements for 48V drive systems of MHEV.

An operating strategy optimized for dynamic requirements for 48V drive systems of MHEV.

A method and system for controlling a stop rotation position of an engine is described. In one example, the system includes an integrated starter/generator that may be selectively coupled to the engine. The integrated starter/generator may rotate the engine in a first direction (e.g., reverse direction) or a second direction (e.g., a forward direction) in response to a position at which the engine stops rotating following cessation of combustion in the engine.

A vehicle driving apparatus includes: a rotating machine; a cover covering the rotating machine and including a thick portion having a predetermined thickness in a direction of a rotation axis of the rotating machine; an oil pump attached to the cover; and a relief valve provided in the cover, and configured to discharge an oil supplied from the oil pump. The relief valve includes a cylinder room that is provided in the thick portion. The thick portion is provided with at least one cutout extending from an inner wall of the cylinder room in a direction substantially perpendicular to the rotation axis. The cover is provided with at least one rib each of which is disposed in a position opposed to a corresponding one of the at least one cutout and extends in the direction of the rotation axis.

A hybrid vehicle includes an engine and an electric motor as driving power sources, a clutch of a hydraulic type provided between the engine and the electric motor, an electric oil pump that supplies hydraulic pressure to the clutch, a mechanical oil pump that interlocks with a rotation of the electric motor and supplies hydraulic pressure to the clutch, and a controller that controls the electric motor and the electric oil pump.

A vehicle includes a battery, an inverter, a permanent magnet electric machine, and a controller. The controller commands discharge of a storage element of the inverter through the permanent magnet electric machine via a current having a zero quadrature axis component and a positive direct axis component.