The invention relates to an arrangement for supplying a rail vehicle with electrical energy. One electrical machine is allocated to each of at least two internal combustion engines for generating electrical energy. A common controller is designed to start the internal combustion engines individually as required. At least one pre-heating device is designed to pre-heat the internal combustion engines before a start. A temperature detection device is thermally coupled to the internal combustion engines. The controller is designed, during an operation of one of the internal combustion engines, to start another of the internal combustion engines if, due to cooling of the other internal combustion engine, a temperature of the other internal combustion engine detected by a temperature identifying device reaches or exceeds a temperature threshold.

The present invention relates to a smart energy management system for vehicles that are totally electric (1) or electro-hybrid (2), that prioritizes the regeneration of kinetic energy into electric energy, comprised by a main energy control unit (3) with adaptive control to improve the efficiency with subsequent travel on a specific route, embedded energy storage system (4), two-way charger for normal or occasional recharging of the vehicle (5), or for supplying electric energy to an external consumer, with converters for the auxiliary system (6), and remote operation control and servicing capability, use of a device with touch-sensitive screen (57) and with availability of on-board power sockets for recharging personal devices. The present invention also relates to a smart energy management system for energy generator (22, 23, 24, 25, 69, 84) for the distributed generation of electric energy in a non-embedded mode, as well as a method used to manage energy in these systems and a method for controlling the operation of an energy generator (22, 23, 24, 25 25, 69, 84).

A hydraulic pump powering system includes a mobile vehicle, a first electric current generator device, and one or more electric pump motors. The mobile vehicle has first and second prime movers. The first electric current generator device is disposed onboard the mobile vehicle and is configured to be mechanically coupled with the first prime mover to convert movement created by the first prime mover into first electric current. The one or more electric pump motors are configured to receive the first electric current to power a hydraulic pump. The second prime mover is configured to generate movement that is converted into a propulsive force that propels the mobile vehicle. The one or more electric pump motors are configured to receive the first electric current in order to power the hydraulic pump to pump a fluid into a pumping location located off-board the mobile vehicle.

An arrangement for supplying electric energy to traction motors and auxiliaries of a railway vehicle includes, at least two internal-combustion engines, each in combination with an assigned electric machine. At least one internal-combustion engine/machine combination is operated, whereupon the electric machine generates alternating current during a generator mode of operation, which alternating current, in a first operating mode, is rectified by at least one generator rectifier and supplied to a direct-current link in the form of direct current. The direct-current link supplies electric energy to at least one traction motor of the railway vehicle. In the first operating mode, electric energy from the direct-current link is supplied to the auxiliaries via an auxiliaries inverter and via an auxiliaries connector. In a second operating mode the auxiliaries inverter is out of operation, and which is an emergency operation condition, electric energy is supplied to the auxiliaries by the electric machine of one of the internal-combustion engine/machine combination through an emergency operation electric line.

An ECU (Electronic Control Unit) controls a converter such that the converter is stopped when a fail signal FCV is output. The ECU further controls an inverter such that power operation and regenerative operation by a motor generator are performed in a state in which output of an ON signal to an IGBT (Insulated Gate Bipolar Transistor) element is set non-executable, when the fail signal FCV is output due to the IGBT element becoming short-circuited.

The purpose of the present invention is to operate an engine in a proper operation state while keeping the remaining amount in an electrical storage apparatus within a proper range. Hybrid construction machinery according to the present invention is provided with a controller for controlling an engine according to a governor characteristic having a predetermined inclination that defines a relationship between load torque and rotational speed so that the rotational speed decreases with an increase in the load torque. In the controller, a target engine power calculating unit (2-5) calculates a first target engine power that increases and decreases according to increases and decreases in output values of a load power calculating unit (2-1) and a charge/discharge request calculating unit (2-3), and a target rotational speed calculating unit (2-6) calculates, as a command value for a target rotational speed of a motor generator, a rotational speed at the intersection point of a governor characteristic line changed by a governor characteristic changing unit (2-4) and an equal power line dependent on the first target engine power on a rotating speed-torque characteristic line diagram.

An ECU includes a running mode control unit, a Wout control unit, and an engine start/stop determination unit. The running mode control unit controls switching of a running mode including a CD mode in which an engine is stopped and running using a motor generator alone is given priority, and a CS mode in which the engine is operated and the SOC of a power storage device is maintained at a predetermined target. The engine start/stop determination unit carries out a start determination of the engine based on a discharge allowable power indicating electric power that can be discharged by the power storage device. The Wout control unit modifies the discharge allowable power based on the running mode and operation/stop of the engine.

An ECU executes a program including: a step of setting a threshold as a shutdown threshold when, during a power supply operation, a duration of a power supply stoppage exceeds a first time; a step of stopping an operation of an engine or prohibiting the engine from operating; and a step of executing system shutdown processing when an SOC of a storage apparatus falls to or below the shutdown threshold or the duration of the power supply stoppage exceeds a second time.

A power transmission device including at least one first input terminal and a second input terminal for the at least dual-channel supply of electric power to the power transmission device, and including at least one output terminal for routing the electric power to a consumer, the power transmission device including an input switch which is designed for the electrically conductive connection of the first input terminal and/or the second input terminal to the at least one output terminal. Furthermore, a vehicle electrical system including such a power transmission device is also provided.

Briefly stated, technologies are generally described for harvesting energy for a vehicle having an engine and a torque converter. In various examples, an energy harvesting system is described, where the torque converter may be configured to have an input shaft driven by the engine, and an output shaft. Each of the input shaft and output shaft of the torque converter may be mechanically coupled to one of a first portion and a second portion of an electric generator. The electric generator may generate electrical energy using a rotational speed difference between the input shaft and the output shaft of the torque converter. As a result, the electric generator may store at least a portion of the electrical energy, which otherwise would be lost at the torque converter, in a charge storage device. The stored electrical energy may be transmitted to an assist motor configured to drive a rotation of wheels.