Abstract: Motor vehicle comprises a combustion engine with internal combustion of fuel and/or cold-flame product for driving the motor vehicle and thereby producing exhaust gas and an auxiliary power unit comprising an external burner and an expansion machine. A fuel tank with fuel provides energy to the burner and the combustion engine. The motor vehicle has a cold-flame-reactor with means for feeding the fuel from the fuel tank to the cold-flame reactor, and at least a portion of the fuel is pre-combusted to a cold-flame product in the cold-flame reactor.

Abstract: Motor vehicle comprises a combustion engine with internal combustion of fuel and/or cold-flame product for driving the motor vehicle and thereby producing exhaust gas and an auxiliary power unit comprising an external burner and an expansion machine. A fuel tank with fuel provides energy to the burner and the combustion engine. The motor vehicle has a cold-flame-reactor with means for feeding the fuel from the fuel tank to the cold-flame reactor, and at least a portion of the fuel is pre-combusted to a cold-flame product in the cold-flame reactor.

Abstract: The invention relates to a combustion engine (14) for combusting a mixture of a fast burning gas with air in a combustion process generating mechanical and/or electrical power. The engine (14) comprises a cylinder (10; 36) and a piston movable within the cylinder between a top dead center and a bottom dead center (18). The piston (12; 34) and the cylinder form an expansion volume. An injection nozzle (20; 44) is provided for injecting the fast burning gas into the cylinder (10; 36). The cylinder and the piston form an additional cavity (24; 38) at said top dead center in which said fast burning gas is injectable. The shape of the cavity is adapted to the shape of the flame of the combustion process and its size is large enough that no combustion reactions occur at the walls of the cavity.

Abstract: The invention concerns a device to generate mechanical work with a steam engine that works with a closed circuit and that has a feed water tank, a feed pump, an evaporator to generate steam, the steam engine, and a condenser. The invention is based on the problem of keeping a device of the initially cited kind free of damage from freezing water when the device is not operating and the environmental temperatures are low. To this end, an inert gas in the feed water tank (10) is used to expel the feed water from the other part (36) of the circuit to the feed water tank (10). This is done by switching a valve arrangement. The feed water tank (10) is designed so that it will not be damaged, for example by exploding from freezing water inside. The advantages of the closed circuit are retained. To restart the device, the system is reheated, and the valve arrangement only has to be switched back to the position suitable for normal operation.

Abstract: The invention concerns a device to generate mechanical work with a steam engine that works with a closed circuit and that has a feed water tank, a feed pump, an evaporator to generate steam, the steam engine, and a condenser. The invention is based on the problem of keeping a device of the initially cited kind free of damage from freezing water when the device is not operating and the environmental temperatures are low. To this end, an inert gas in the feed water tank (10) is used to expel the feed water from the other part (36) of the circuit to the feed water tank (10). This is done by switching a valve arrangement. The feed water tank (10) is designed so that it will not be damaged, for example by exploding from freezing water inside. The advantages of the closed circuit are retained. To restart the device, the system is reheated, and the valve arrangement only has to be switched back to the position suitable for normal operation.

Abstract: A compression refrigeration machine is provided having ammonia as a refriant and including a condenser, a throttle device, an evaporator device, and a motor-compressor unit. The motor compressor unit includes an electric motor that drives a compressor and may be arranged in a semi-hermetic or hermetic encapsulation. In an hermetic encapsulation, the electric motor is located outside a suction gas stream flowing into the compressor and outside a discharge gas stream exiting from the compressor so that the electric motor is only exposed to an essentially static ammonia atmosphere. The motor-compressor unit and the semi-hermetic encapsulation are composed of materials stable or resistant to ammonia.