A vehicle accessory power management assembly has a power device, an accessory device, a power transmitting device and a controller. The power transmitting device has an input part coupled to the power device, an output part coupled to the accessory device, and a speed ratio switching part switchable between a first operating state in which the input part and the output part rotate at a first speed ratio relative to one another and a second operating state in which the input part and the output part rotate at a second speed ratio relative to one another. The controller is configured to switch the speed ratio switching part between the first operating state and the second operating state in response determining whether the speed of output of the power device is above a pre-determined value or below a pre-determined value.

An electrified fire fighting vehicle includes a chassis, a cab, a body, a front axle, a rear axle, an engine, a battery pack, a pump system including a water pump, an electromagnetic device, and a power divider coupling the engine to the pump system and the electromagnetic device. The electromagnetic device is electrically coupled to the battery pack. The electromagnetic device has (a) an output coupled to at least one of the front axle or the rear axle and (b) a power take-off coupled to the pump system.

An electrified fire fighting vehicle includes a chassis, a cab, a body, a front axle, a rear axle, an engine, a battery pack, a pump system including a water pump, an electromagnetic device electrically coupled to the battery pack and mechanically coupled to at least one of the front axle or the rear axle, and a power divider coupled to the pump system, the engine, and the electromagnetic device.

A power train for an amphibian operable in land and marine modes includes a prime mover, at least a first land propulsion unit, a first marine propulsion unit, a second marine propulsion unit, and at least one speed change transmission. The prime mover is arranged to drive the at least first land propulsion unit through/via the at least one speed change transmission in land mode, and the prime mover is arranged to drive the first marine propulsion unit and the second marine propulsion unit through/via the at least one, or another, or combinations of, speed change transmission in marine mode. In addition, the present invention provides an amphibian comprising the power train.

An electrified fire fighting vehicle includes a battery pack, an electric motor, and a controller configured to operate the electric motor using stored energy in the battery pack to provide a performance condition including (i) accelerating the electrified fire fighting vehicle to a driving speed of at least 50 miles-per-hour in an acceleration time and (ii) maintaining or exceeding the driving speed for a period of time. The acceleration time is 30 second or less. An aggregate of the acceleration time and the period of time is at least 3 minutes.

An engine assembly is provided that includes an engine throttle and a supercharger placed in series with one another in air flow to the engine. The throttle and supercharger can be controlled so that throttling losses are selectively distributed across the throttle and/or the supercharger. Throttling losses placed across the supercharger can create torque that can be converted to stored energy.

A fire fighting vehicle includes a chassis, tractive elements coupled to the chassis, a pump coupled to the chassis, a discharge fluidly coupled to the pump, an accessory module coupled to the chassis, and an electric motor coupled to the chassis, the pump, and the accessory module. The accessory module is configured to receive a mechanical energy input and provide at least one of electrical energy or fluid energy. The electric motor is configured to provide mechanical energy to drive (a) the pump to provide fluid to the discharge such that the fluid is expelled from the discharge and (b) the accessory module to provide the at least one of electrical energy or fluid energy.

An integrated charger for electric vehicles employs a multi-phase auxiliary motor on the vehicle to charge the traction battery. The stator of the electric motor includes first windings and second windings that are phase-staggered. One of the sets of windings is put into connection with an external AC power source via a switching unit, which also isolates the vehicle's traction battery from the external source. The AC current excites an alternating current in the second windings, which is rectified and used for charging the traction battery.

An electrified airport rescue fire fighting (ARFF) vehicle includes at least one front axle, two rear axles, a water tank having a maximum water capacity of greater than or equal to about 3,000 gallons, a battery pack, and one or more electric motors configured to receive power from the battery pack to facilitate accelerating the ARFF vehicle from 0 to 50 miles-per-hour in 25 seconds or less while the water tank is at the maximum water capacity.