Abstract: A turbo compounding system may include a turbo generator having a switched reluctance machine having at least one pole-matched rotor and stator pair, a single phase inverter coupled to the turbo generator and further coupled to a direct current link, an inverter coupled to the direct current link, a motor generator coupled to the inverter.

Abstract: A system comprises a turbo generator having a switched reluctance machine having at least one pole-matched rotor and stator pair, a single phase inverter coupled to the turbo generator and further coupled to a direct current link, an inverter coupled to the direct current link, a motor generator coupled to the inverter.

Abstract: An input circuit for a tractor includes one or more switches having open and closed positions, based on operating characteristics of the tractor, and a power transistor drawing a threshold current through the switches during short intervals during which the switch states are sensed by a microcontroller.

Abstract: A hybrid utility vehicle includes a tool-supporting frame and an electrical power source driven by an engine. Right and left rear wheels independently driven by permanent magnet electric motors and front wheels electrically steerable over a range of approximately 180 degrees operate under the control of a vehicle controller responsive to steering and speed input controls to provide zero turn radius operation with minimum slippage and tire scuffing. Space efficiency provided by the electric steering and an electrically driven tool deck facilitate a variety of tool mounting configurations including a rear discharge deck with a chute passing under the vehicle frame between the driven wheels. An inverter connected to the electrical power source provides 110/220 volt output. The power source also functions as a high powered, high rpm, low noise starter motor.

Abstract: An interlock circuit on a mowing vehicle or tractor deactivates the engine if a signal from a single backup sensor is interrupted. The mowing vehicle or tractor has an engine, an electric power source to provide electric current to a magneto and an ignition, a transmission connected to the engine and having forward, neutral and reverse operations, a controllable tool drive (PTO) connected to the engine for powering an accessory, and a single backup sensor to provide a signal if no object is detected behind the vehicle. A reverse sensing switch is movable between a first position if the transmission is in forward or neutral, and a second position if the transmission is in reverse. A PTO switch is movable between an on condition for activating the PTO and an off position for deactivating the PTO.

Abstract: A hybrid utility vehicle includes a tool-supporting frame and an electrical power source driven by an engine. Right and left rear wheels independently driven by permanent magnet electric motors and front wheels electrically steerable over a range of approximately 180 degrees operate under the control of a vehicle controller responsive to steering and speed input controls to provide zero turn radius operation with minimum slippage and tire scuffing. Space efficiency provided by the electric steering and an electrically driven tool deck facilitate a variety of tool mounting configurations including a rear discharge deck with a chute passing under the vehicle frame between the driven wheels. An inverter connected to the electrical power source provides 110/220 volt output. The power source also functions as a high powered, high rpm, low noise starter motor.