Abstract: A tractor includes an internal combustion engine for delivering torque, wheels or tracks for imparting a propulsive force to the ground, and a power takeoff shaft for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator is drivingly connected to the engine, and at least one electrical motor is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.

Abstract: A tank intended for the storage of hydrogen by absorption into material, including a first part and a second part, each of the first and second parts including a barrel, closed at one first longitudinal end by a substantially hemispherical part, the two parts being joined by the second open longitudinal end of the barrel by an assembly plate, the above-mentioned tank including two heat exchangers, each being contained in one of the two parts and intended to be under the same hydrogen pressure, the above mentioned tank also having apparatus of supply and evacuation of heat transfer medium circulating in the above mentioned heat exchangers integrated in the assembly plate, and apparatus of supply and collection of hydrogen.

Abstract: A tractor includes an internal combustion engine for delivering torque, wheels or tracks for imparting a propulsive force to the ground, and a power takeoff shaft for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator is drivingly connected to the engine, and at least one electrical motor is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.

Abstract: A tractor (100) comprises an internal combustion engine (107) for delivering torque, wheels (101-104) or tracks for imparting a propulsive force to the ground, and a power takeoff shaft (110) for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator (115) is drivingly connected to the engine, and at least one electrical motor (121-124) is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery (120) is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.

Abstract: A tank intended for the storage of hydrogen by absorption into material, including a first part (I) and a second part (II), each of the first (I) and second (II) parts including a barrel (4), closed at one first longitudinal end (4.1) by a substantially hemispherical part (6), the two parts (I, II) being joined by the second open longitudinal end (4.2) of the barrel (4) by means of an assembly plate (2), the above-mentioned tank including two heat exchangers (12), each being contained in one of the two parts (I, II) and intended to be under the same hydrogen pressure, the above mentioned tank also having means of supply and evacuation of heat transfer medium circulating in the above mentioned heat exchangers integrated in the assembly plate, and means of supply and collection of hydrogen.

Abstract: A vehicle (10) comprises a hydrogen fuel ceil (12) and a hydrogen storage tank (14). The storage tank includes an intake valve for connecting with an external hydrogen source (26) to Fill the tank (14), A hydrogen supply line (16) is provided for supplying hydrogen to the fuel cell from the storage tank (14). Heat transfer means (14, 22) transfers heat from the storage tank (14) to the fuel cell (12). Heat expelled by the storage tank during filling thereof is captured and transferred to the fuel cell (12).

Abstract: A tractor (100) comprises an internal combustion engine (107) for delivering torque, wheels (10-104) or tracks for imparting a propulsive force to the ground, and a power takeoff shaft (110) for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator (115) is drivingly connected to the engine, and at least one electrical motor (121-124) is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery (120) is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.

Abstract: A vehicle (10) comprises a hydrogen fuel ceil (12) and a hydrogen storage tank (14). The storage tank includes an intake valve for connecting with an external hydrogen source (26) to Fill the tank (14), A hydrogen supply line (16) is provided for supplying hydrogen to the fuel cell from the storage tank (14). Heat transfer means (14, 22) transfers heat from the storage tank (14) to the fuel cell (12). Heat expelled by the storage tank during filling thereof is captured and transferred to the fuel cell (12).

Abstract: A method of controlling a fan for cooling a condenser in an air conditioning system is provided. A compressor serves to drive a refrigerant around a fluid circuit which includes the condenser. The duty cycle of the compressor is measured over a period of time to determine a utilisation ratio which reflects the demand on the air conditioning system at that time. The fan is driven at a speed which is no lower than a minimum fan speed which is associated with the calculated utilisation ratio and ambient temperature. Therefore, the demand on the system is determined and exploited without any additional pressure sensors.