A fire fighting vehicle includes a chassis, a front axle, a rear axle, an engine, a battery system, an electromagnetic device, an accessory drive, and a controller. The accessory drive is positioned to receive a mechanical input from the engine and the electromagnetic device. The controller is configured to selectively engage a plurality of operational modes including a standby mode and a hybrid mode. According to the standby mode, the controller is configured to operate the electromagnetic device using stored energy stored in the battery system to drive the accessory drive with the engine off. According to the hybrid mode, the controller is configured to operate both the engine and the electromagnetic device.

Roll-off is considered to be any unwanted vehicle movement after a parking brake is engaged. Roll-off is prevented or reduced by a method and apparatus that adjusts hydraulic brake pressure applied to vehicle wheel brakes if unintended motion is detected when the parking brake is engaged and the vehicle's transmission is not in the park position.

The invention relates to a method for controlling a waste heat recovery system associated with a combustion engine of a vehicle, the waste heat recovery system comprising a working fluid circuit; at least one evaporator; an expander; a condenser; a reservoir for a working fluid and a pump arranged to pump the working fluid through the circuit, wherein the at least one evaporator is arranged for heat exchange between the working fluid and a heat source, and wherein the waste heat recovery system further comprises a cooling circuit arranged in connection to the condenser. The method comprises the steps of: predicting a shutdown of a combustion engine associated with the system; determining if a predetermined requirement is fulfilled; and if so reducing the temperature in the waste heat recovery system prior to combustion engine shutdown.

Disclosed are a parking fault detection method, an apparatus, a system and a working machinery. The method includes: acquiring a parking control signal; the parking control signal is a parking signal or a parking release signal; in response to that it is determined that a parking control condition is met, generating a parking control instruction according to the parking control signal and sending the parking control instruction to a parking brake component of a working machinery; the parking brake component is configured to execute parking or parking release action according to the parking control instruction, and the parking control instruction is configured to correspond to the parking control signal; and acquiring a feedback signal of the parking brake component, and acquiring a parking fault detection result of the working machinery according to the feedback signal.

A military vehicle includes a frame, axle assemblies coupled with the frame that are configured to be driven to transport the military vehicle, an internal combustion engine configured to drive the axle assemblies, an electric motor configured to drive the axle assemblies, and processing circuitry. The processing circuitry is configured to operate the military vehicle according to different modes by generating control signals for the internal combustion engine and the electric motor and providing the control signals to the internal combustion engine and the electric motor. The modes include an economy mode, a summon mode, an environmentally reactive control mode, a weaponry status control mode, a boost mode, an escape mode, an optimized idle control mode, a transmission control mode, a supplemental electric vehicle mode, and a convoy mode.

In the vehicle control device, when the accelerator pedal is operated while the electric parking brake of the vehicle is operating, the determination unit determines, based on the open/closed state of the vehicle door, the wearing state of the seat belt, and the operating state of the brake pedal, It is determined whether the operation of the accelerator pedal is an erroneous operation. The control unit executes at least one of control for actuating the hydraulic brake of the vehicle and control for suppressing the driving force of the vehicle when it is determined that the operation of the accelerator pedal is an erroneous operation.

A vehicle safety device (200) for preventing an unoccupied vehicle moving uncontrollably. The device comprises a control module (201) and a brake module (203). The device (200) is configured to detect when a driver leaves said vehicle. The device (200) is also configured to activate, through the brake module (203), a braking system when the device detects that said driver has left the vehicle. The device may improve the safety of a vehicle in which it is fitted. A system (300) comprising the device (200) and a vehicle (400) comprising the system (300) are also described. A method of preventing an unoccupied vehicle moving is also described. The device, system, vehicle and method are particularly useful for preventing accidents in large commercial vehicles caused by a driver leaving the vehicle without engaging a parking brake.

A limp-home driving method at the time of a breakdown of a parking switch for a vehicle includes a first step of diagnosing a breakdown of a plurality of air parking switches provided in a hybrid vehicle by connecting the air parking switches to a hybrid control unit (HCU) and a transmission control unit (TCU), respectively, through parking wires, and connecting the HCU and the TCU with each other by controller area network (CAN) communication, a second step of informing a driver of a breakdown state at the time of confirming the breakdown of the air parking switches in the first step, and a third step of limiting an output of the vehicle and performing a limp-home function in a state in which an ISG (Idle Stop and Go) control is stopped, after the second step.

A hybrid vehicle has a first motor/generator mechanically coupled to a drive wheel, a second motor/generator mechanically coupled to an internal combustion engine and a high-power battery that is electrically coupled to the motor/generators. The second motor/generator has a smaller electrical power generation capability than the first motor/generator. While starting the vehicle at a time of insufficient battery capacity required for the EV start, the power generation controller disconnects the first electric motor from the drive wheel, connects the first electric motor to the internal combustion engine, and carries out MG1 idle power generation in which the first electric motor generates power by receiving torque from the internal combustion engine. When the vehicle is stopped at a time of sufficient battery capacity, the power generation controller does not carry out the MG1 idle power generation and keeps the first electric motor mechanically coupled to the drive wheel.

In a vehicle including a generator and a drive motor for traveling that operates with generated electric power of the generator, setting a control mode of a carrier frequency used for PWM control for adjusting the electric power of the generator to either of a basic mode or a diffusion mode; acquiring a noise recognition degree suggestion amount suggesting a vehicle situation correlated with a level of a recognition degree of a vehicle user with respect to noise generated by an operation of the generator; executing the diffusion mode in a case where the recognition degree is estimated to be high based on the noise recognition degree suggestion amount; and executing the basic mode in a case where the recognition degree is estimated to be low.