A drill rig with a steering system may include a substructure having a wheelhouse, a drill floor arranged atop the substructure, a mast extending upwardly and above the drill floor, and a steering system arranged within the wheelhouse. The steering system may include a wheel assembly comprising an electric motor configured for driving rotational motion of a wheel, a deployment device configuring for deploying the wheel assembly to carry the drill rig, and a steering mechanism configured for selective engagement with the wheel assembly and rotating the wheel assembly.

A hybrid vehicle includes: an engine; a first motor; a planetary gear having three rotary elements that are connected respectively to a rotary shaft of the first motor, an output shaft of the engine, and a drive shaft coupled to an axle such that on a collinear diagram, the rotary shaft, the output shaft, and the drive shaft are arranged in that order; a second motor; a first inverter configured to drive the first motor; a second inverter configured to drive the second motor; a battery capable of exchanging power with the first and second motors via the first and second inverters; and an electronic control unit configured to control the engine such that a rotation speed of the engine increases at a predetermined time when the engine is operative, respective gates of the first and second inverters are both blocked, and an accelerator is ON.

Inverterless running control is control in which an inverter is set to a gate cut-off state, an engine is driven to mechanically rotate a motor-generator and to generate in the motor-generator, counter-electromotive torque in accordance with a difference between a counter-electromotive voltage of the motor-generator and a system voltage, and a vehicle runs with drive torque applied to an output shaft as reaction force of the counter-electromotive torque. An ECU controls drive torque to produce driving force determined by an accelerator position by raising or lowering the system voltage during inverterless running control.

Vehicles and methods for controlling internal combustion engine rotational speeds are disclosed. Vehicles described herein include an internal combustion engine having a crankshaft and a plurality of drive wheels mechanically coupled to the crankshaft of the internal combustion engine. Embodiments described herein determine a target wheel torque, determine a base increase rate of engine rotational speed, increase an engine rotational speed of the internal combustion engine based on the base increase rate of engine rotational speed, determine an estimated wheel torque, determine an updated increase rate of engine rotational speed based on the target wheel torque and the estimated wheel torque, and increase the engine rotational speed of the internal combustion engine based on the updated increase rate of engine rotational speed.

An electric vehicle includes a motor control unit. The motor control unit is configured to repeatedly execute a communication disruption determination for determining whether communication with a main control unit is disrupted; output a communication disruption signal when the motor control unit determines that the communication is disrupted; change a determination procedure of the communication disruption determination such that the communication disruption determination is completed in a shorter time when a crash possibility signal is received prior to the communication disruption determination, than when the crash possibility signal is not received prior to the communication disruption determination; and control a discharge circuit to discharge the electric charge of the smoothing capacitor, when the crash possibility signal is received prior to the communication disruption determination and the communication disruption signal is output.

An electric powered vehicle includes a battery pack capable of storing electric energy, A fuel engine operated with a clean fuel. A generator or alternator 126 having communication with the engine, and supply electric energy to the electric driving motor A starter of the fuel engine activates when a sensed charge of the battery pack falls to or below the DMF value. Included is a second 128 and third generator or alternator 130 in communication with the fuel engine during periods when no electrical communication exists between the EDM and the battery pack. The second and third generators maintain an electrical output to the battery pack until the battery packs are fully charged. Included is a rear generator or alternator 152 in communication with a rear drive shaft assembly, or differential, including a level orientation sensor and a rotational velocity sensor communication between an output of such communication enabled upon any downhill motion of the vehicle above a predetermined operational velocity determined by the velocity sensor. A second rear generator 156 is controlled by an accelerator pedal, rpm sensor, electric clutch and is activated when no pressure is applied by a driver upon the accelerator pedal, permitting charging of the battery pack by the second rear generator 156 only upon a condition of zero acceleration. A third rear generator 300 is activated by the brake pedal and brake pedal switch does charge the battery packs 102/104.

An electric vehicle includes: an electric motor; an engine; a power transmission device; a drive casing that houses a drive apparatus including the electric motor and the power transmission device; a first electrical casing; and a second electrical casing. The drive casing, the first electrical casing and the second electrical casing cooperate to constitute a mechanical-electrical integrated unit. The drive casing has a first wall surface, a second wall surface, a third wall surface, a fourth wall surface, a fifth wall surface and a sixth wall surface. The engine is disposed on the first wall surface, and is connected to an input shaft of the power transmission device on a side of the first wall surface. The first electrical casing and the second electrical casing are separately disposed on respective two of the second wall surface, third wall surface, fourth wall surface, fifth wall surface and sixth wall surface.

The teachings of the present disclosure may include operation of a drivetrain system for a vehicle with multiple operation modes. The first includes coupling the AC electric machine with the internal combustion engine for starting the internal combustion engine or for supplying an additional torque. The second includes coupling the internal combustion engine with the AC electric machine for charging the electric battery. The third includes decoupling the AC electric machine from the internal combustion engine and connecting an AC winding to a heating resistance of a catalyst device for electrically heating the catalyst device. The fourth includes coupling the internal combustion engine with the AC electric machine to the heating resistance for electrically heating the catalyst device.

A coaxial asynchronous motor drive system, including a speed reducer, an electric motor and a main housing, and further including a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the range per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.

An electrified fire fighting vehicle includes a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, a water pump, an energy storage system, an engine, an electric motor coupled to the engine and the energy storage system, and a power divider positioned between the electric motor, the water pump, and the rear axle. The power divider facilitates selectively driving the water pump and the rear axle with the engine and the electric motor.