Abstract: A device and method for aftertreating exhaust gases in which a controllable valve is used to introduce a supplementary agent in fluid form into the exhaust system at high pressures. The high-pressure promotes an efficient mixture of the supplementary agent for the aftertreatment with the exhaust gas emerging from the internal combustion engine.

Abstract: Proposed is a method for assessing the completeness of a regeneration of a particle filter which is traversed by the exhaust gas of an internal combustion engine, wherein a pressure difference which is generated across the particle filter when a flow passes through the particle filter is measured and evaluated for the assessment. The method is characterized in that a time derivative of the measured pressure difference is formed and the assessment of the completeness of the regeneration takes place as a function of the time derivative.

Abstract: The invention relates to a device and a method for producing an operating medium for a motor vehicle, especially for use in the exhaust gas post-treatment of the motor vehicle. According to said method, an operating medium is produced from an initial product and air using a catalyst device. Said initial product is heated and mixed with air and the heated mixture of initial product/air is fed to the catalyst device. A part of the initial product is converted to the gaseous phase by means of a preheating element and is entrained by a stream of air when leaving the preheating element, said stream of air leading to a combustion chamber. The method allows to efficiently produce an operating medium, especially a reducing agent for regenerating NOx storage catalysts.

Abstract: A dosing mechanism for fuels, particularly for the input into a chemical reformer to obtain hydrogen, has a metering-in device for metering fuel into a supply line, which opens out at at least one dosing aperture into a transporting line transporting a tempered material flow. A holding device for accommodating the metering-in device has an insulating body which thermally insulates the metering-in device from the transporting line that transports the tempered material flow.

Abstract: Disclosed is a method for operating an emission control system that is located in an exhaust gas zone of an internal combustion engine and comprises a catalytic layer causing an oxidation reaction as well as a particle filter in which at least one exhaust gas component is deposited when the internal combustion engine is operated and which is regenerated from said exhaust gas component in predefined operating phases. According to the inventive method, the air throughput through at least one combustion chamber of the internal combustion engine is reduced in the predefined operating phases in which the particle filter is regenerated.

Abstract: An atomization system for fuels, particularly for charging a chemical reformer for obtaining hydrogen, features at least one metering device, accommodated in a supporting device, for metering fuel into a temperature-adjusted substance stream, which introduces the fuel directly into the temperature-adjusted substance stream without the interpolation of a supply line.

Abstract: A fuel cell assembly for furnishing a fuel has a fuel preparation unit for preparation of a fuel that contains hydrogen to a fuel energy converter for chemical conversion and energy conversion of the fuel, a fuel pressure reservoir for storing the fuel subjected to pressure, at least one separate pressure energy recycling unit for converting and recycling pressure energy of the fuel, wherein the at least one pressure energy recycling unit includes at least one mechanical drive device for generating mechanical energy, and at least one electrical generator for generating electrical energy, disposed on the at least one mechanical drive device and configured for recovery or coupling of an expansion work in the at least one energy recycling unit.

Abstract: The invention relates to a device and a method for producing an operating medium for a motor vehicle, especially for use in the exhaust gas post-treatment of the motor vehicle. According to said method, an operating medium is produced from an initial product and air using a catalyst device. Said initial product is heated and mixed with air and the heated mixture of initial product/air is fed to the catalyst device. A part of the initial product is converted to the gaseous phase by means of a preheating element and is entrained by a stream of air when leaving the preheating element, said stream of air leading to a combustion chamber. The method allows to efficiently produce an operating medium, especially a reducing agent for regenerating NOx storage catalysts.

Abstract: An arrangement for supplying liquid media to consumers of a fuel cell system having a feed pump is suggested which is less complex compared to known arrangements. This is achieved in that controllable metering valves (22) are provided between the feed pump (21) and the respective consumers.

Abstract: An atomization system for fuels, particularly for charging a chemical reformer for obtaining hydrogen, features at least one metering device, accommodated in a supporting device, for metering fuel into a temperature-adjusted substance stream, which introduces the fuel directly into the temperature-adjusted substance stream without the interpolation of a supply line.

Abstract: A dosing mechanism for fuels, particularly for the input into a chemical reformer to obtain hydrogen, has a metering-in device for metering fuel into a supply line, which opens out at at least one dosing aperture into a transporting line transporting a tempered material flow. A holding device for accommodating the metering-in device has an insulating body which thermally insulates the metering-in device from the transporting line that transports the tempered material flow.

Abstract: A method and a device for controlling an exhaust gas aftertreatment system, in which a first state variable characterizes the state of the exhaust gas aftertreatment system. A second state variable takes into consideration additional influences on the special operating state. A special operating state is initiated as a function of the first and the second state variable.

Abstract: A device and method for aftertreating exhaust gases in which a controllable valve is used to introduce a supplementary agent in fluid form into the exhaust system at high pressures. The high-pressure promotes an efficient mixture of the supplementary agent for the aftertreatment with the exhaust gas emerging from the internal combustion engine.

Abstract: An apparatus for delivering at least two liquid media to consumers of a fuel cell system, with a feed pump is made less complicated than known apparatuses in that at least one pressure transmission unit between the at least two media is provided with at least one pressure transmission element, which has at least two pressure faces for pressure imposition that communicate with the liquid media.

Abstract: A metering unit for metering liquid and/or gaseous educts by means of a feed pump for a fuel cell system, including at least one lead line for delivering an educt flow, at least one control piston, and a differential pressure valve for regulating the educt flow; the differential pressure valve has a regulatable throttling cross section, which is variable automatically, as a function of a flow pressure dictated by the control piston, in order to regulate the educt flow. The lead line leads to the control piston, and between the control piston and the differential pressure valve a first and a second connecting line are provided.

Abstract: The invention relates to a method and an apparatus for the post-treatment of exhaust gas produced by an internal combustion engine (1), in particular in a motor vehicle, wherein the following are provided: a hydrolysis unit (10) and a metering device (15) connected to it via a hydrogen line (17) for the metered addition of hydrogen to the untreated exhaust gas (A) and/or to the exhaust gas treated by means of an oxidation catalytic converter (3), and a control/regulating unit (18) that is functionally connected to the hydrolysis unit (10) and the metering device (15) in order to control or regulate the production of hydrogen in the hydrolysis unit (10) and the metering device (15) as a function of certain operating states of the internal combustion engine (1) and registered parameters of the exhaust-gas system (FIG. 1).

Abstract: A method and a device for controlling an exhaust gas aftertreatment system are described. A first state variable characterizes the state of the exhaust gas aftertreatment system. A second state variable takes into consideration additional influences on the special operating state. A special operating state is initiated as a function of the first and the second state variable.

Abstract: The invention concerns an injection system for the injection of fuel into the combustion chambers of combustion engines. The injection system embraces a high pressure collecting area (5) (Common Rail), which is supplied across a high pressure pump (3) and provides fuel under high pressure to a number (n−1) of injectors (6, 21). The individual injectors 6, 21 each possess an injection nozzle (23) which is opened and closed by means of a vertically moveable nozzle pin (22). In a high pressure conduit (12) disposed after the high pressure collecting area (5) and leading to the injectors (6, 21) there is provided a first flowthrough valve (7). A run-off conduit (25, 31) is operated by means of a further flowthrough valve (26) disposed close to the nozzle.

Abstract: The invention relates to an apparatus for furnishing a reaction mixture for a reforming catalyst of a fuel cell assembly, having a) an air infeed with means for regulating an air flow rate; b) a fuel infeed with means for regulating a fuel flow rate; c) a water vapor generator with means for regulating a water vapor flow rate; d) a liquid water infeed with means for regulating a liquid water flow rate; and e) a control unit, which communicates with the liquid water infeed, the water vapor generator, the fuel infeed, and the air infeed; and via the control unit, controlling variables for the fuel infeed, the liquid water infeed, the water vapor generator and the air infeed which are furnished as a function of a power demand to the fuel cell and as a function of an operating phase of the apparatus.

Abstract: An apparatus for delivering at least two liquid media (M1, M2) to consumers of a fuel cell system, with a feed pump (11), is proposed which is less complicated than known apparatuses. This is achieved by providing that at least one pressure transmission unit (20) between the at least two media (M1, M2) is provided with at least one pressure transmission element (2c), which has at least two pressure faces (D1, D2) for pressure imposition that communicate with the liquid media (M1, M2).