An improved gas-electric power delivery system is provided. The invention provides an array of internal combustion engine-powered electric generators and an array of electric drive motors wherein each electric drive motor connects to a common shaft. The common shaft of the electric drive motor array connects to a mechanical load of varying power demand. The electric drive motors draw power from a battery in response to demands on the motors by the varying power demands of the external load. The array of electric generators charges the battery and each such generator turns on and off, as needed, to maintain the battery charge in response to demands on the battery by the electric drive motor array. Each electric motor connected to a common shaft in the electric motor array also turns on and off, as needed, to meet the varying power demands of the external load.

An improved gas-electric power delivery system is provided. The invention provides an array of internal combustion engine-powered electric generators and an array of electric drive motors wherein each electric drive motor connects to a common shaft. The common shaft of the electric drive motor array connects to a mechanical load of varying power demand. The electric drive motors draw power from a battery in response to demands on the motors by the varying power demands of the external load. The array of electric generators charges the battery and each such generator turns on and off, as needed, to maintain the battery charge in response to demands on the battery by the electric drive motor array. Each electric motor connected to a common shaft in the electric motor array also turns on and off, as needed, to meet the varying power demands of the external load.

The invention relates to supplying electric traction motors of a rail vehicle with electrical energy. Internal combustion engine/machine combination are operated such that alternating current is generated and used for operating at least one electric traction motor, in a first operating state of the machine in a generator mode. In a second operating state of the machine, an associated machine converter supplies alternating current and drives the associated internal combustion engine, wherein at least the machine converter associated with the second electrical machine is supplied, while the associated electrical machine is in the second operating state, via an electrical DC voltage line with direct current by a rectifier associated with the first machine, wherein the rectifier produces the direct current from alternating current generated by the first electrical machine.

The invention relates to supplying electric traction motors of a rail vehicle with electrical energy. Internal combustion engine/machine combination are operated such that alternating current is generated and used for operating at least one electric traction motor, in a first operating state of the machine in a generator mode. In a second operating state of the machine, an associated machine converter supplies alternating current and drives the associated internal combustion engine, wherein at least the machine converter associated with the second electrical machine is supplied, while the associated electrical machine is in the second operating state, via an electrical DC voltage line with direct current by a rectifier associated with the first machine, wherein the rectifier produces the direct current from alternating current generated by the first electrical machine.

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.

An engine assembly includes a propulsor, a first gearbox, an engine, a gas turbine engine, and a variable speed drive. The first gearbox includes a first gear assembly coupled with the propulsor. The engine includes an air inlet, an exhaust outlet, and an engine output shaft. The engine output shaft is coupled with the first gear assembly. The gas turbine engine includes a first rotational assembly, a compressor section, a turbine section, and a combustor. The first rotational assembly is configured for rotation about a rotational axis. The first rotational assembly includes a bladed compressor rotor, a bladed first turbine rotor, and a first shaft interconnecting the bladed compressor rotor and the bladed first turbine rotor. The compressor section is connected to the air inlet. The combustor is connected to the exhaust outlet. The VSD couples the first rotational assembly to the first gear assembly.

The present invention relates to a crane, particularly a crawler crane, whereby at least two different drive units can be alternately connected with the crane. The invention is additionally directed at corresponding drive units.

A compact powertrain, comprises a first engine and a second engine and means for rotationally connecting said engines to a common output shaft; the engines have drive shafts with axles parallel to each other; connection means between said drive shafts and an output shaft, moreover, they comprise first coupling means on said first drive shaft for connecting said first drive shaft to the output shaft, and second coupling means for connecting said second drive shaft to said output shaft; the delivery of the rotational torque and power is controlled by the adjustment of each engine and said coupling means, being adapted to selectively connect/disconnect said drive shafts from said output shaft; the means for connecting the rotation of the two engines, left and right, to the output shaft comprise a clutch assembly and a gearbox; the clutch assembly is provided with a single clutch for drive shaft which connects or disconnects the respective drive shaft with a corresponding input and transmission shaft inside the gearbox; the common output shaft, of the rotation from the compact powertrain, rotates receiving motion by means of pairs of gears present respectively on one said transmission shaft, inside the gearbox, and on the output shaft, with the selective insertion or disengagement of the clutches and, depending on the rotational speed, of coupling engagements on the transmission shafts and of said gears present on said shafts; and it has one or more idle gears on the output shaft controlled by the rotation with at least one coupling engagement to the output shaft to receive the rotation, with the engagement inserted, or, when disengaged, transmit the rotation from one transmission shaft towards the other transmission shaft without any action on the output shaft. Entirely endothermic, hybrid or electrical embodiments are described for both land vehicles of all kinds and boats.

A compact powertrain, comprises a first engine and a second engine and means for rotationally connecting said engines to a common output shaft; the engines have drive shafts with axles parallel to each other; connection means between said drive shafts and an output shaft, moreover, they comprise first coupling means on said first drive shaft for connecting said first drive shaft to the output shaft, and second coupling means for connecting said second drive shaft to said output shaft; the delivery of the rotational torque and power is controlled by the adjustment of each engine and said coupling means, being adapted to selectively connect/disconnect said drive shafts from said output shaft; the means for connecting the rotation of the two engines, left and right, to the output shaft comprise a clutch assembly and a gearbox; the clutch assembly is provided with a single clutch for drive shaft which connects or disconnects the respective drive shaft with a corresponding input and transmission shaft inside the gearbox; the common output shaft, of the rotation from the compact powertrain, rotates receiving motion by means of pairs of gears present respectively on one said transmission shaft, inside the gearbox, and on the output shaft, with the selective insertion or disengagement of the clutches and, depending on the rotational speed, of coupling engagements on the transmission shafts and of said gears present on said shafts; and it has one or more idle gears on the output shaft controlled by the rotation with at least one coupling engagement to the output shaft to receive the rotation, with the engagement inserted, or, when disengaged, transmit the rotation from one transmission shaft towards the other transmission shaft without any action on the output shaft. Entirely endothermic, hybrid or electrical embodiments are described for both land vehicles of all kinds and boats.

Systems and methods are provided herein for operating a vehicle in a K-turn mode. The K-turn mode is engaged in response to determining that an amount that at least one of the front wheels of the vehicle is turned exceeds a turn threshold. While operating in the K-turn mode, forward torque is provided to the front wheels of the vehicle. Further, backward torque is provided to the rear wheels of the vehicle. Yet further, the rear wheels of the vehicle remain substantially in static contact with a ground while the front wheels slip in relation to the ground.