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.

A hybrid vehicle comprising an internal combustion engine, a hybrid system, a parking brake, a gear box and an electronic control system is provided. A method for controlling the method comprises charging the hybrid vehicle by receiving and storing electric energy, which enables a safe way of starting the internal combustion engine during the charging. An electronic control system is configured to: detect a starting attempt of the internal combustion engine during the receiving and storing of electrical energy; ensure that the hybrid vehicle is ready for a start of the internal combustion engine, which includes ensuring that the gear box is in a neutral gear and that the parking brake is applied; and thereafter start the internal combustion engine during the receiving and storing of electrical energy.

A method for controlling charging of a hybrid vehicle, a control system for charging of a hybrid vehicle and a hybrid vehicle comprising the control system is described. The hybrid vehicle comprises a fuel engine, a parking brake, an electronically controllable operating brake, and a hybrid system comprising a charging unit, an energy storage, and an electric motor system. The control system is connectable to the hybrid system, the fuel engine, the operating brake, and the parking brake. The control system is configured to control the charging of the energy storage in accordance with the charging method. The charging method comprises: detecting connection of a charging cable of an external charging station, ensuring that the hybrid vehicle is ready for charging, and requesting charging from the charging station. Ensuring that the vehicle is ready for charging includes applying the operating brake, also called service brake, of the hybrid vehicle.

A fire fighting vehicle includes a chassis, a front axle, a rear axle, a fluid tank having a maximum fluid capacity of at least about 6,000 liters, a battery pack, and an electromechanical transmission coupled to the battery pack and at least one of the front axle or the rear axle. The electromechanical transmission includes one or more electric motors configured to receive power from the battery pack to facilitate accelerating the fire fighting vehicle from 0 to 50 miles-per-hour in 30 seconds or less while the fluid tank is at the maximum fluid capacity.

An electrified fire fighting vehicle includes a chassis, a cab, a body, a front axle, a rear axle, an energy storage system, a water pump, and an electromagnetic device electrically coupled to the energy storage system. The electromagnetic device is coupled to the water pump and at least one of the front axle or the rear axle. The electromagnetic device is configured to receive stored energy from the energy storage system and provide a mechanical output to selectively drive the water pump and the at least one of the front axle or the rear axle.

An automatic control apparatus for an engine detects an operation position of a mechanical shift lever for shifting gears of a transmission, automatically stops the engine when a predetermined condition is satisfied in the case where the operation position is at a first specific range, and automatically restarts the engine in the case where, after the operation position is switched from the first specific range to a second specific range while the engine is stopped, the second specific range is maintained for a predetermined time. When the operation position is switched from the first specific range to the second specific range while the engine is stopped, it is determined whether or not the driver has an intention to start the vehicle, and if YES, the predetermined time is set to be shorter than when it is determined that there is no intention to start the vehicle.

A method for implementing and canceling an automatic operation of a body of a machine includes receiving a selection of an automatic setting according to a first operation of a hoist mode actuator, determining an activation state of the automatic setting, causing an automatic operation of an engine of the machine to adjust an idle level of the engine and an automatic operation of a hoist system to move the body in a first direction to a first position. The method includes canceling the automatic operation of the engine and the automatic operation of the hoist system and controlling the idle level of the engine according to operations of a throttle, the hoist system to move the body according to the idle level of the engine and respective directions of the second operation the hoist mode actuator and subsequent operations of the hoist mode actuator.

An electronic control system for vehicles includes an electronic control device and a master device. The master device is connected to at least two or more groups of electronic control devices each including the electronic control device and gives an instruction to the electronic control device. The electronic control device includes a storage unit including a data storage side; a second detection unit that detects a state of a vehicle; a rewrite execution unit that writes update data acquired from the master device to the data storage side to rewrite a program; an activation determination unit that determines whether or not to activate the program rewritten with the update data; and an activation execution unit that activates the program. The master device includes an update data acquisition unit that acquires the update data from an external instrument; a first detection unit that detects the state of the vehicle, the first detection unit being different from the second detection unit; a rewrite instruction unit that instructs the rewrite execution unit to write the update data to the data storage side; and an activation instruction unit that instructs the activation execution unit to activate the program when determining that the vehicle is parked using the first detection unit after the rewrite execution unit writes the update data to the data storage side according to the instruction from the rewrite instruction unit. The activation determination unit determines whether or not the vehicle is parked using the second detection unit when the activation execution unit activates the program according to the instruction from the activation instruction unit. The activation execution unit activates the program when the activation determination unit determines that the vehicle is parked using the second detection unit. The activation determination unit determines whether or not the vehicle is parked using an index different from that for the activation instruction unit. Each of the first detection unit and the second detection unit acquires the state of the vehicle from a group of electronic control devices selected from the at least two or more groups of electronic control devices. The group of electronic control devices from which the first detection unit acquires the state of the vehicle is different from the group of electronic control devices from which the second detection unit acquires the state of the vehicle.

A vehicle clutch control method includes an incline detecting step of detecting an incline of a road surface when the vehicle is in a creep hold state, a first determining step of determining whether the detected incline is greater than a first set value, and a first control step of opening the clutch and operating an electronic stability program (ESP) brake when the incline is greater than the first set value.

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.