Fev Motorentechnik Gmbh & Co Kg

Fev Motorentechnik Gmbh

Fev Forschungsgesellschaft Fur Energietechnik Und Ver Brennungsmotoren

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Lavision Gmbh

Gerhard Lepperhoff

Franz Pischinger

Georg Huthwohl

Helmut Pleimling

Willi Neff

Peter Andresen

Klaus Pochner

Manfred Durnholz

Dietrich Meyerdierks

Hartmut L&uuml;ders

Kirsten Hentschel

Bernhard L&uuml;ers

Georg Lutkemeyer

Rolf Backes

Georg L&uuml;tkemeyer

A method for operating a converter for the energy conversion of fuel from at least one main fuel supply, and from at least one auxiliary fuel supply for operating the converter directly and/or by operating an auxiliary unit, comprises: detecting the amount of fuel in the main fuel supply; detecting the amount of fuel in the auxiliary fuel supply, at least with respect to a predetermined minimum amount; in response to the minimum amount being reached, generating a signal that blocks at least one of a) filling of the main fuel supply, and b) startup of the converter via a control unit; and deactivating the blocking in response to the auxiliary fuel supply being replenished.

Method of operation of a device for energy conversion using a main fuel and at least one auxiliary fuel

Method for operation of a device for energy conversion using a main fuel and at least one auxiliary fuel

The invention relates to a method for determining the spatial concentration of the various components of a mixture, in particular of a gas mixture in a combustion chamber, of a motor for example; a laser beam is hereby directed into the combustion chamber; the laser beam brings the particles of the mixture to radiate, whereas this light of the particles is passed backward through a masked lens and is imaged on a display as a radiating surface and the radial intensity distribution is recorded by an array photodetector, whereas the spatial concentration of individual components of the particle mixture may be measured from the radial intensity distribution.

Method for determining the spatial concentration of the components of a gas mixture in a combustion chamber

Process and device for operating an internal combustion engine with less pollutant emission

An apparatus for a zero-point stabilization of an exhaust gas sensor installed in an apparatus for a thermal energy conversion of gaseous fuel while producing an exhaust gas stream, includes an arrangement for alternatingly exposing the exhaust gas sensor to a flow of exhaust gas and a flow of fresh air.

Method and apparatus for a zero-point stabilization of an exaust gas sensor

A method of reducing pollutants in an exhaust gas of an internal-combustion engine includes the following steps: producing, at a first location, a reactive gas component NO,from at least one part of the NO content of the exhaust gas by reaction with the oxygen, contained in the exhaust gas, under an energy effect; and reactively converting the NO,in a pollutant retaining system situated at a second location downstream of the first location as viewed in the flow direction.

Method for reducing pollutant emission in motor vehicles

A method of reducing NO.sub.x emissions of a turbo-charged internal combustion engine. The engine has an exhaust conduit guiding an exhaust gas stream, a charge-air intake conduit guiding a charge-air stream and a turbocharger including a turbine disposed in the exhaust conduit and a compressor disposed in the charge-air intake conduit. The method comprises the steps of branching off a partial exhaust gas quantity from the exhaust gas stream upstream of the turbine as viewed in a direction of exhaust gas flow; passing the partial exhaust gas quantity through a particle filter; and introducing the partial exhaust gas quantity into the charge-air stream upstream of the compressor.

Method of reducing the NO.sub.x emission of a supercharged piston-type

Filter arrangement for removal of soot particles from the exhaust gases

A filter system for removing particulates from exhaust gases of an internal combustion engine, in particular a diesel engine, having at least one filter member formed by filter channels in the configuration of a honeycomb, and made of porous filter material, in which the region of the inlet openings of the filter channels open on the gas intake side, electrical resistance looped heating elements being arranged that are connected via a lead-in and a lead-out to a power supply. A positive positioning of the heating elements and their connections is assured and false contacts, such as short-circuits, are avoided. The resistance heating elements are connectd to a support element connected to the power supply, and the position of the support element can be adjusted three-dimensionally while maintaining a maximum distance of about 30 mm. from the surface of the filter member at its gas intake side.

Filter system for the removal of engine emission particulates

A system for the regeneration, by oxidation, of the particulates deposited in a particulate filter trap of an internal cumbustion engine provided for purifying the engine exhaust gas, in which the thickness of the particulates deposited in a given area in the trap is determined relative to a predetermined thickness in excess of which the filter trap will operate inefficiently, and the excess thickness being reduced by regeneration.

System for the regeneration of a particulate filter trap

A filter system for removing particulates from exhaust gases of an internal combustion engine, in particular a diesel engine, having at least one filter member formed by filter channels in the configuration of a honeycomb and made of a porous filter material, in which the region of the inlet openings of the filter channels open on the gas intake side, electrical resistance looped heating elements are arranged that are connected via a lead-in and a lead-out to a power supply. A secure positioning of the heating loops in the honeycomb is assured and contact errors are avoided. The loops of the resistance heating elements and/or the loop connections are received in grooves of the filter system in such a manner that they retain their pre-determined position despite vibrations, thermally-induced shape changes and the like. The grooves can be located in the filter member and/or in a cover plate overlying the inlet face of the filter member.

A process for the oxidation of a concentration of internal combustion engine emission particulates collected in a particulate filter trap by supplying secondary energy to the deposit at the inlet surface of the filter and/or to the particulate/exhaust gas mixture, includes adjusting the particulate concentration to a value which lies within the explosive range of the particulate/exhaust gas mixture by briefly adding, or recycling, combustible particulates to the exhaust gas flow in the filter, especially in front of the inlet face of the filter.

Process and system for the oxidation of engine emission particulates

A process and system for the regeneration of at least a pair of side-by-side particulate filter traps for purifying the exhaust gas of an internal combustion engine, particularly a motor vehicle diesel engine, by oxidation of particulates collected in the traps, combustion of the particulates being carried out during engine operation by fuel burners respectively associated with the traps, in which a flame jet at high velocity flow is directed from one of the burners for a short duration transversely to the inflow direction of the exhaust gas to be purified directly into an associated trap without mixing with the exhaust gas flow, such that the exhaust gas in the vicinity of the one burner is diverted by the one flame jet to flow into and through the other trap while the one flame jet initiates combustion of the particulates collected in its associated trap.

Process and system for the regeneration of particulate filter traps

An assembly for particulate filter traps in which engine exhaust particulates are deposited for the treatment of internal combustion emission, includes a filter trap support containing a plurality of individual particulate filter traps arranged side-by-side and parallel to the direction of exhaust gas flow therethrough. An inflow housing overlying the trap support is removable for inspection of the filter traps, and a sectioned cover of the trap support underlying the removable housing permits one or more individual traps to be inspected and separately replaced.

Assembly for engine exhaust gas particulate filter traps

A process for the regeneration of engine emission particulates collected in particulate filter traps associated with each of the engine cylinders, or with groups of such cylinders, includes the selective elevation of the emission temperature of at least one of the cylinders or groups to the extent required for regeneration, by oxidation, of the filter trap or traps associated therewith, by supplying engine fuel to such cylinder or cylinders in a predtermined amount to produce the elevated emission temperature, and supplying the remaining of the cylinders with amounts of engine fuel less than such predetermined amount as required to sustain the given engine power output.

Growing community of inventors

Stolberg, Germany

Gerhard Lepperhoff