Abstract: A sealing sleeve for sealing between piston and cylinder wall in internal combustion engines with a height in the direction of piston movement that is at least three times as large as its width in the radial direction of the cylinder having a pressurised annular cut out (6 in FIG. 2) in that outer surface of it that contacts the cylinder wall.

Abstract: A sealing sleeve is disclosed for sealing between piston and cylinder wall in internal combustion engines. In at least one embodiment, it includes a height in the direction of piston movement that is at least three times as large as its width in the radial direction of the cylinder. Further, it includes a pressurized annular cut out.

Abstract: Vacuum cleaner nozzle equipped with an air inlet which opens when the nozzle is lifted by its handle. When the nuzzle gets stuck in something it can be lifted by its handle whereby the air inlet opens, air is let in, the suction decreases and the nozzle gets unstuck.

Abstract: Device for pollution control where a polluted stream of air or gas is purified from both oxidisable material and nitrogen oxides simultaneously by a combination of regenerative high temperature treatment and catalytic treatment.

Abstract: A device for separation of oil from the hot gases (5) that are ventilated out from the crank house of a combustion engine. The separation is accomplished by contacting th gases with a cold wall (2) where the oil deposits and is then drained away. The wall (2 is kept cold by the cold gases (4) leaving the device which makes the cooling demand small. The leaving gases (4) are heated by this, so that a higher degree of separation f purification can be accomplished by the use of several similar steps in series.

Abstract: An air box in a regenerative thermal oxidiser has one or several beds of a heat-storing and heat-transferring material. The air box is connected with a gas inlet/outlet and comprises a gas permeable surface that is turned towards one of the beds. The air box has distribution devices provided in the air box.

Abstract: The invention relates to a viewing instrument wherein the image being viewed by the user may be frozen owing to the provision of a memory function. In connection with the freezing of the image, the latter may be magnified in such a manner that a highly magnified image may be viewed without such discomfort as is due to shaking movements of the image while the user may perform a wide-angle-of-vision search for an image to be magnified.

Abstract: Method and apparatus for treating a gas flow including guiding the gas flow through a gas treatment unit (18) adapted for filtering particles in the gas flow, and eliminating the particles in the gas treatment unit (18). Particles are filtered from the gas flow by means of accumulating the particles in, or in connection with, a number of ducts (21) forming part of the gas treatment unit (21) during passage of the gas flow through the gas treatment unit (18). The temperature of the gas flow is controlled along the ducts (21) to a value that provides combustion of the particles, and eliminates the filtered particles in the gas treatment unit (18) by means of combustion in the ducts (21). An improved treatment of a gas flow is provided, in particular in connection with exhaust gas purification in a diesel engine, for eliminating particles in its exhaust gases.

Abstract: Method and arrangement for treatment of a gas-flow in connection with a NOx reducing catalyst (18) that include guiding the gas-flow through an exhaust gas treatment unit (18) having several ducts (21) with exchange of heat between the ducts (21). The ducts (21) are connected to an inlet and an outlet, respectively, at the exhaust gas treatment unit (18) so that the gas-flow occurs during exchange of heat between incoming and outgoing flows. Reduction of NOx compounds in the gas-flow is accomplished by means of the NOx reducing catalyst (18). An adaptation of the temperature of the exhaust gas treatment unit (18) is affected to the prevailing operating condition of the NOx reducing catalyst (18). The method and apparatus enable provision of the required exhaust gas temperature for NOx reduction, while also accommodating the temperature limitations imposed by sulphur absorption and regeneration subsystems.

Abstract: Abstract of the Disclosure Method and apparatus for treating a gas flow including guiding the gas flow through a gas treatment unit (18) adapted for filtering particles in the gas flow, and eliminating the particles in the gas treatment unit (18). Particles are filtered from the gas flow by means of accumulating the particles in, or in connection with, a number of ducts (21) forming part of the gas treatment unit (21) during passage of the gas flow through the gas treatment unit (18). The temperature of the gas flow is controlled along the ducts (21) to a value that provides combustion of the particles, and eliminates the filtered particles in the gas treatment unit (18) by means of combustion in the ducts (21). An improved treatment of a gas flow is provided, in particular in connection with exhaust gas purification in a diesel engine, for eliminating particles in its exhaust gases.

Abstract: A silencer is provided that is intended to be connected to a gas flow with pressure fluctuations, such as for example downstream a combustion engine, the silencer comprising a housing provided with an envelope surface and two side surfaces and an inlet opening and an outlet opening arranged in the envelope surface.

Abstract: Method and apparatus for treating a gas flow including guiding the gas flow through a gas treatment unit (18) adapted for filtering particles in the gas flow, and eliminating the particles in the gas treatment unit (18). Particles are filtered from the gas flow by means of accumulating the particles in, or in connection with, a number of ducts (21) forming part of the gas treatment unit (21) during passage of the gas flow through the gas treatment unit (18). The temperature of the gas flow is controlled along the ducts (21) to a value that provides combustion of the particles, and eliminates the filtered particles in the gas treatment unit (18) by means of combustion in the ducts (21). An improved treatment of a gas flow is provided, in particular in connection with exhaust gas purification in a diesel engine, for eliminating particles in its exhaust gases.

Abstract: The invention concerns an air box (1) in a regenerative thermal oxidiser comprising one or several beds (3) of a heat-storing and heat-transferring material. The air box (1) is connected with a gas inlet/outlet (2) and comprises a gas permeable surface (9) that is turned towards one of said beds (3). The air box (1) is further characterised in that distribution means (4) are provided in said air box (1).

Abstract: Method and arrangement for treatment of a gas-flow in connection with a NOx reducing catalyst (18) that include guiding the gas-flow through an exhaust gas treatment unit (18) having several ducts (21) with exchange of heat between the ducts (21). The ducts (21) are connected to an inlet and an outlet, respectively, at the exhaust gas treatment unit (18) so that the gas-flow occurs during exchange of heat between incoming and outgoing flows. Reduction of NOx compounds in the gas-flow is accomplished by means of the NOx reducing catalyst (18). An adaptation of the temperature of the exhaust gas treatment unit (18) is affected to the prevailing operating condition of the NOx reducing catalyst (18). The method and apparatus enable provision of the required exhaust gas temperature for NOx reduction, while also accommodating the temperature limitations imposed by sulphur absorption and regeneration subsystems.

Abstract: A method for control of internal combustion engine powered vehicles wherein the vehicle driver, during normal vehicle operation, determines the vehicle velocity essential by controlling the gear transmission ratio between vehicle's engine and it's wheels. Thereby the rotational speed of the engine is kept low resulting in high engine energy efficiency during normal operation, while the driver by reflex, immediately and without auxiliary controls is able to shift to high engine speeds and corresponding high engine power.

Abstract: Catalytic purification device for purifying air or gas by heat treatment with a catalyst. The catalyst is carried on a patterned strip or membrane that is folded in accordion style, forming two groups of parallel flow channels with simple connections for incoming and outgoing flows. Good heat economy is achieved by heat exchange between the incoming and outgoing flow of gases.

Abstract: Antenna element fastened to an automobile window which without being connected to a mobile telephone by means of a cable enhances the possibilities of transmitting and receiving inside an automoble.

Abstract: The invention concerns a method of removing nitrogen oxides from a gas flow by using a combustion exchanger. Reducing nitrogen compounds are mixed with the gas before the latter is treated in the combustion exchanger.

Abstract: This invention relates to a method and device for recovery of energy from a medium containing combustible substances even at low concentrations. The method is characterized by raising the temperature of the medium in a regenerative combustor such as a reversal flow direction combustion device wherein the combustion takes place in a warm zone, to the combustion temperature at which essentially all chemical energy of the combustible substances is transformed into thermal energy. The heated medium is then utilized for the production of a wanted form of energy.

Abstract: A combustion device (1) incorporated in an apparatus for combustion and/or decomposition of pollutants in air or other gases. The device has a stationary bed of e.g. sand having heat-accumulating and heat-exchanging properties. The bed is provided with heating means to heat a central part of the bed to the self-decomposition and/or the self-combustion temperature of the medium to be treated. The stationary bed (2) is placed on an essentially horizontal support (3), and at the remaining sides it is enclosed by side elements (4, 5) and a roof element (6), the latter resting directly on the upper face of the bed (2) so that the bed supports the roof element (6) and the loads to which the latter is exposed. Inside the bed upper, essentially horizontal tubes (7) are arranged as well as lower, essentially horizontal tubes (8), all said tubes being provided with valve systems at their ends.