Daimler Chrysler Ag

Daimler Ag

Daimler-Benz Ag

Mercedes-Benz Aktiengesellschaft

Dornier Gmbh

Degussa - Huls Ag

Xcellsis Gmbh

Thomas Stengel

Carsten Plog

Roland Kemmler

Renato Andorf

Martin Matt

Eberhard Holder

Viktor Pfeffer

Werner Maunz

Ralf Moos

Norbert Markert

Thomas Kreuzer

Egbert Lox

Wolfgang Strehlau

Karl-Heinz Thiemann

Dirk Voigtl&auml;nder

Ralph Stetter

Thomas Birkhofer

J&uuml;rgen Leyrer

Winfried Degen

Hans Van Den Tillaart

Patrick Bachinger

Dagmar Waidelich

Swen Lang

Armin H&uuml;rland

Tobias Sommerfeld

Erwin Loeffler

Viktor Pfeiffer

Matthias Bohl

Melanie Schnell

Berthold Keppler

Christian Duelk

A method and device for generating electrical energy in a motor vehicle involves thermoelectric generator having a plurality of thermoelectric modules and coupled to at least one electrical consumer. Module open-circuit voltages of the modules are determined and those modules for which a sum of their module open-circuit voltages attains twice a predefined generator output voltage with the smallest possible deviation are determined and electrically connected to one another in series.

Method and device for generating electrical energy in a motor vehicle

The present invention relates to a fuel conditioning process for internal combustion engines of motor vehicles. According to the present invention, on board a motor vehicle at a temperature of from 20&#xb0; C. to 150&#xb0; C. and at atmospheric pressure, nitrous gases essentially including nitrogen monoxide, nitrogen dioxide, or dinitrogen monoxide, or gaseous mixtures thereof are passed through the liquid fuel of the motor vehicle, nitro compounds being formed in the fuel as a result of the passing through of the nitrous gases through the fuel.

Fuel conditioning process

A process for the desulfurization of an engine fuel onboard a motor vehicle includes separating sulfur-containing components of the engine fuel by selective liquid-phase adsorption on an adsorption material. The adsorption material may be an oxide of Al, Mg, Si, or Ti that is doped with Ag.

Method for desulphurizing engine fuel on board a motor vehicle

A sensor for determining the concentration of sulphur compounds in a liquid includes: a working electrode in contact with the liquid to be analyzed; a referenced electrode insulated from the liquid to be analyzed; a liquid-impermeable membrane located between the working electrode and the reference electrode and permeable to an ion that may form a chemical compound with the sulphur compounds in the liquid to be analyzed; and a reference material in contact with the reference electrode or forms the reference electrode.

Sensor for determining the concentration of sulphur compounds in a liquid

In a fuel fractionation device for separating a low-boiling fuel fraction from a liquid fuel of an internal-combustion engine, including a vessel which contains the liquid fuel, and in which a reduced pressure is generated by withdrawing the low-boiling fuel fraction in vapor form from the vessel and making it available to the internal combustion engine, the efficiency of the fractionation is improved by utilizing a carrier-gas which is introduced into the liquid fuel, and which is withdrawn from the vessel together with the fuel fraction vapor.

Fuel fractionation device

In a fuel supply system for an internal combustion engine including a fuel tank, a fuel processing apparatus to which fuel from the tank is supplied and which separates the fuel into different fractions, the fuel and the fractions are mixed in a mixing chamber according to a performance graph stored in a control unit depending on the operating state of the engine and the mixture is then supplied to the engine in a controlled manner.

Fuel supply system

In a fuel supply system for an internal combustion engine having a fuel tank for liquid fuel, a fuel pump which draws fuel from the fuel tank and pressurized the fuel to an injection pressure at which the fuel is made available to the internal combustion engine, a fuel-fractionating device which produces at least one liquid fuel fraction from the fuel, and an accumulator which receives the liquid fuel fraction from the fuel-fractionating device, stores it and makes it available to the internal combustion engine, the fuel fraction made available and the fuel made available being fed to the internal combustion engine by the fuel supply system as a function of demand, the accumulator is a pressure accumulator and includes pressure-generating means for pressurizing fuel fraction in the pressure accumulator to the injection pressure.

An apparatus for reducing the emission of vaporized hydrocarbons in a fuel supply system. The apparatus comprises a filter for binding the hydrocarbons. A catalyst for oxidation of the hydrocarbons to carbon dioxide and water is provided downstream of the filter.

Apparatus for reducing the emission of vaporized hydrocarbons in a fuel supply system

A catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres which contains iridium on a support material. Silicon dioxide or a dealuminized zeolite in the acid H form with a modulus of more than 20, preferably more than 100, or mixtures thereof are used as support materials. Iridium is deposited on the external surfaces of these support materials with average particle sizes between 10 and 30 nm. The catalyst is particularly suitable for treating exhaust gases from lean-burn gasoline engines or from diesel engines.

Catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres

A method for manufacturing a catalytic converter includes spraying a suspension comprising a solvent and a catalyst material comprising carrier particles coated with a catalytically active material onto a substrate having a temperature above the boiling point of the solvent via a sprayer; and forming a layer on the substrate. The layer is thermally activated and is wetted three-dimensionally.

Process for manufacturing a catalytic material

A process is provided for drawing low-boiling volatile components, such as 2-methylbutane, 2,3-dimethylbutane and pentane, out of fuel in a fuel tank of a passenger car or utility vehicle by applying a vacuum to the fuel tank by means of a diaphragm pump; suctioning off the low-boiling volatile components and condensing the low-boiling volatile components under a pressure that is greater than 1.0 bar. The low-boiling volatile components may be stored in a storage tank and used as engine fuel during cold start of the engine or used as a reducing agent for nitrogen oxides in the exhaust gas from the engine.

Process for drawing volatile components out of fuel in a tank

The invention relates to a process for preparing a Pt/zeolite catalyst material, the material itself, and the use of the material in removing carbon monoxide from a gas. In a preferred embodiment, the invention relates to a process for preparing a Pt/zeolite catalyst material for the catalytic removal of CO in H.sub.2 -rich gas by means of selective CO oxidation and the use of such a catalyst material. The catalyst materials of the invention can be prepared by employing Pt(NH.sub.3).sub.4 Cl.sub.2.H.sub.2 O and a zeolite material. The resulting material can be used for the catalytic removal of CO from an H.sub.2 -rich outlet gas mixture from a methanol reforming reactor. The compositions and methods to produce catalytic materials result in products with high and prolonged catalyst activity. In particular, the methods and compositions of the invention can be used in removing CO from the hydrogen fed to fuel cells in electric vehicles having stored methanol fuel.

Preparation and use of Pt/zeolite catalyst materials for removing carbon

This invention relates to a reactor for the selective catalytic removal of CO in high H.sub.2 gas. A precious-metal-containing selective CO oxidation catalyst is applied to a metallic or ceramic carrier having a cross channel or other structure which causes a turbulent fluid flow within the reactor.

Growing community of inventors

Friedrichshafen, Germany

Thomas Stengel