A fire fighting vehicle includes a front axle, a rear axle, an energy storage system, an engine, a first motor/generator, and a second motor/generator. In a first mode, (a) the engine is off and (b) at least one of the first motor/generator or the second motor/generator uses stored energy in the energy storage system to drive at least one of the front axle or the rear axle. In a second mode, (a) the engine provides a mechanical input the first motor/generator, (b) the first motor/generator uses the mechanical input to generate electricity, (c) the second motor/generator uses the electricity to drive at least one of the front axle or the rear axle. Any electricity generated by either the first motor/generator or second motor/generator in response to the mechanical input from the engine is never provided to the energy storage system to charge the energy storage system.

An electrified fire fighting vehicle includes a chassis, a cab coupled to the chassis, a body coupled to the chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, a water tank supported by the chassis, an energy storage system coupled to the chassis and positioned rearward of the cab, a water pump supported by the chassis, 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 electrified fire fighting vehicle includes a chassis, a cab coupled to the chassis, a body coupled to the chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, a water tank supported by the chassis, an energy storage system coupled to the chassis and positioned rearward of the cab, a water pump supported by the chassis, 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.

A method to detect whether combustion is taking place in an internal combustion engine of a hybrid vehicle during operation of the hybrid vehicle, whereby a decoupler is provided between the internal combustion engine and an electric machine that serves to power the hybrid vehicle, comprising opening the decoupler between the internal combustion engine and the electric machine, receiving a speed signal when the decoupler is open, said signal indicating a rotational speed of the internal combustion engine when the decoupler is open, and determining, on the basis of the speed signal when the decoupler is open, whether combustion is taking place in the internal combustion engine. The present invention also relates to a control device to carry out the method according to the invention.

A method to detect whether combustion is taking place in an internal combustion engine of a hybrid vehicle during operation of the hybrid vehicle, whereby a decoupler is provided between the internal combustion engine and an electric machine that serves to power the hybrid vehicle, comprising opening the decoupler between the internal combustion engine and the electric machine, receiving a speed signal when the decoupler is open, said signal indicating a rotational speed of the internal combustion engine when the decoupler is open, and determining, on the basis of the speed signal when the decoupler is open, whether combustion is taking place in the internal combustion engine. The present invention also relates to a control device to carry out the method according to the invention.

Transmission system for a vehicle having an input arranged for connection to a drive source, and an output arranged for connection to a load. The transmission includes a transmission. The transmission includes first input shaft, a first output shaft connected to the output, and a first speed transforming gear connecting the first input shaft and the first output shaft, and a second input shaft, a second output shaft connected to the output, and a second speed transforming gear connecting the second input shaft and the second output shaft. The transmission includes a first coupling member, arranged for coupling the input to the first input shaft at a first speed ratio and a second coupling member, arranged for coupling the input to the second input shaft at a second speed ratio. The first and second speed transforming gears together include a plurality of transmission gears, wherein the transmission gears are arranged such that successive shifting through respective first, second, third, fourth, fifth and sixth gears is effected by alternatingly engaging the first coupling member and the second coupling member.

A power transmission set for tractioned axles of vehicles. The power transmission set includes at least one coupling/uncoupling device, a selector unit, a primary shaft, and a secondary shaft. The shafts are interconnected by the selector unit to select and control a type of motor propulsion applied to a tread axle of a vehicle. The shafts cooperatively with the coupling/uncoupling device are configured to provide a configuration in which only a combustion engine is responsible for propulsion; in which only an electric motor provides propulsion; in which both the combustion engine and the electric motor work together to generate torque; or in which the tread axle is uncoupled from the combustion engine and the electric motor and the combustion engine provides power to the electric motor to generate electricity. A vehicle for the transport of cargo and passengers including the power transmission set.

A power transmission set for tractioned axles of vehicles. The power transmission set includes at least one coupling/uncoupling device, a selector unit, a primary shaft, and a secondary shaft. The shafts are interconnected by the selector unit to select and control a type of motor propulsion applied to a tread axle of a vehicle. The shafts cooperatively with the coupling/uncoupling device are configured to provide a configuration in which only a combustion engine is responsible for propulsion; in which only an electric motor provides propulsion; in which both the combustion engine and the electric motor work together to generate torque; or in which the tread axle is uncoupled from the combustion engine and the electric motor and the combustion engine provides power to the electric motor to generate electricity. A vehicle for the transport of cargo and passengers including the power transmission set.

A transmission module for a hybrid drive vehicle configured to be interposed between an internal combustion engine and a transmission of the vehicle has a tray-like support structure configured to be secured to the engine and defines a housing for a clutch to be interposed between a crankshaft of the internal combustion engine and the module. An actuator controls the clutch. The actuator includes an annular chamber provided in the support structure and opens toward the housing, and an annular piston housed in the annular chamber is axially sliding but angularly fixed. A thrust member is coupled in a rotationally free manner to the annular piston, coaxial thereto and operable to cooperate with a control member of the clutch under the thrust of the piston.

A transmission module for a hybrid drive vehicle configured to be interposed between an internal combustion engine and a transmission of the vehicle has a tray-like support structure configured to be secured to the engine and defines a housing for a clutch to be interposed between a crankshaft of the internal combustion engine and the module. An actuator controls the clutch. The actuator includes an annular chamber provided in the support structure and opens toward the housing, and an annular piston housed in the annular chamber is axially sliding but angularly fixed. A thrust member is coupled in a rotationally free manner to the annular piston, coaxial thereto and operable to cooperate with a control member of the clutch under the thrust of the piston.