An electronic control unit of a control device for a hybrid vehicle sets any of a hybrid traveling mode, a single motor drive electric traveling mode, and a dual motor drive electric traveling mode. The electronic control unit prohibits setting of the dual motor drive electric traveling mode when a pinion temperature is higher than an upper limit temperature, and sets the hybrid traveling mode. The electronic control unit releases the prohibition of the dual motor drive electric traveling mode when the pinion temperature is decreased to or below a release temperature lower than the upper limit temperature in a state where setting of the dual motor drive electric traveling mode is prohibited. The electronic control unit restricts output of the first motor in the dual motor drive electric traveling mode when the pinion temperature is higher than the upper limit temperature.

A system for controlling an electric vehicle is disclosed. The electric vehicle has a main power supply for propulsion of the vehicle and at least one brake power supply for at least one brake actuator. The system includes a propulsion control unit for controlling at least one propulsion actuator, and at least one brake control unit for controlling the at least one brake actuator. The propulsion control unit is further configured to control one or more propulsion actuators to perform a backup braking or a backup steering.

A drive train for installation in a vehicle chassis includes a power source, two motor/generators (M/Gs), an array of batteries, and a control system for configuring the drive train to operate using only the power source, only the batteries or a combination of the power source and batteries. The control system may open or close clutches to configure the drive train with each M/G working as a motor or a generator. A M/G working as a motor may use power from the batteries to supply rotational power to drive the vehicle or operate accessories on the vehicle. A M/G working as a generator coupled to a power source generates electric power for charging the array of batteries. The vehicle, including components and subsystems, may be powered electrically from the batteries or powered from the engine.

A fire fighting vehicle includes a chassis, a front axle, a rear axle, an engine, an energy storage device, an electromechanical transmission, a vehicle subsystem, and a power divider. The electromechanical transmission is (i) coupled to at least one of the front axle or the rear axle and (ii) electrically coupled to the energy storage device. The power divider is positioned between the engine, the vehicle subsystem, and the electromechanical transmission. The power divider includes a first interface coupled to the engine, a second interface coupled to the vehicle subsystem, and a third interface coupled to the electromechanical transmission. The power divider is configured to facilitate (i) selectively coupling the engine to the vehicle subsystem and (ii) selectively coupling the engine to the electromechanical transmission.

Some embodiments of the present invention provide a controller for a hybrid electric vehicle comprising: charging command means for causing an engine-driven electrical generator to generate charge to charge a propulsion charge storage device; means for determining when a vehicle is stationary; means for determining when a user has commanded application of a brake to hold a vehicle stationary; and means for determining when a transmission is in a predetermined one or more operating conditions in which the transmission is configured to deliver drive torque to a driveline, wherein the controller is configured to command an enhanced charging operation to be performed in which the charging command means is configured to cause the electrical generator to generate charge when a first set of conditions are met, the first set of conditions comprising the conditions that the vehicle is stationary, the user has commanded application of a brake to hold the vehicle stationary and a transmission is in one said one or more predetermined operating conditions.

A method to control an electric motor including the steps of: determining a target torque; calculating a target current by dividing the target torque by a torque constant; determining an equivalent impedance by means of a predetermined map; calculating the voltage drop by multiplying the target current by the equivalent impedance; calculating a counter-electromotive force by multiplying an actual rotation speed by a speed constant; determining a control voltage to be applied to the power supply terminals of the electric motor by adding the voltage drop to the counter-electromotive force; determining an offset parameter; and correcting the equivalent impedance provided by the predetermined map by applying the offset parameter.

A control apparatus for the hybrid vehicle is provided with: a first switcher configured to switch between a HV running mode in which the internal combustion engine is operated for the hybrid vehicle to run, and an EV running mode in which the internal combustion engine is stopped and the power of the power source is used for the hybrid vehicle to run; a second switcher configured to switch between a first mode and a second mode in which an acceleration performance is emphasized moire than in the first mode; and a controller programmed to control the transmission in such a manner that the transmission stage in a particular state in which the EV running mode and the second mode are selected is reduced in comparison with the transmission stage when the hybrid vehicle is not in the particular state.

Systems, apparatus and methods to multiple levels of redundancy in torque steering control and propulsion control of an autonomous vehicle include determining that a powertrain unit of the autonomous vehicle is non-operational and disabling propulsion operation of the non-operational powertrain unit and implementing torque steering operation in another powertrain unit while propelling the autonomous vehicle using other powertrain units that are configured to implement torque steering operation and propulsion operation.

A drivability target engine speed is set based on a shift stage based on an accelerator opening level and a vehicle speed and the vehicle speed, and a base driving force is set based on an accelerator required driving force and the drivability target engine speed. When an elapsed time after an accelerator depression amount increases is less than a threshold value, a correction driving force is set based on an increase in accelerator depression amount and an engine, a first motor, and a second motor are controlled such that an effective driving force obtained by adding the correction driving force to the base driving force is output to a drive shaft for a hybrid vehicle to travel.

A hybrid vehicle includes an engine, a first rotating electrical machine, a second rotating electrical machine, a pair of power lines, a first inverter, a second inverter, a battery, a converter, a voltage sensor, and an electronic control unit. The electronic control unit is configured to determine that the voltage sensor is normal and perform a first evacuation running control when an output of the voltage sensor changes by the predetermined value or more while a voltage change process is carried out. The electronic control unit is configured to control the converter to a gate shutoff state, control a motive power of the engine in such a manner as to rotate the first rotating electrical machine and put the first rotating electrical machine into a regeneration state, and control the second rotating electrical machine to a power running state, as the first evacuation running control.