Emitec Gesellschaft Fuer Emissionstechnologie Mbh

Mtu Motoren-und Turbinen-union Friedrichshafen Gmbh

Other

Emitec Gesellschaft Fur Emissionstechnologie Mbh

Dif Die Ideenfabrik Gmbh

Bernd Danckert

Samuel Vogel

Sebastian Beyer

Wolfgang Scheibe

Georg Donauer

Martin Walter Ender

Bernd Wagner

Rainer Von Bischopinck

Bernhard Schuetz

An exhaust-gas treatment unit includes a housing with a first end and an oppositely disposed second end, a tube extending from the first end to the second end and serving as an inflow region for an exhaust gas, a deflecting region in the vicinity of the second end for the exhaust gas, and a return flow region extending between the tube and the housing. In the deflecting region, the exhaust gas is mixed and transferred into the return flow region. A method for mixing an exhaust gas in an exhaust-gas treatment unit and a vehicle having the exhaust-gas treatment unit and carrying out the method, are also provided.

Compact exhaust gas treatment unit with mixing region, method for mixing an exhaust gas and vehicle

An exhaust gas cleaning device for a watercraft includes at least a particle filter and/or an SCR catalytic converter and a heat exchanger disposed upstream thereof. The heat exchanger is operated with seawater as a cooling medium. The heat exchanger has an exhaust gas inlet side and an exhaust gas outlet side and is suitable for reducing a volumetric flow rate of an exhaust gas between the exhaust gas inlet side and the exhaust gas outlet side by a certain value in a certain temperature range of the exhaust gas at the exhaust gas inlet side. A watercraft and a method for operating an exhaust gas cleaning device for a watercraft are also provided.

Exhaust gas cleaning device for a watercraft, method for operating an exhaust gas cleaning device and watercraft

The invention relates to a high-pressure piston cylinder unit, especially an injection pump or an injection valve for an internal combustion engine, and to a method for producing one such high-pressure piston cylinder unit. The high-pressure piston cylinder unit has a piston which is guided inside a cylinder bore and which is coupled to an actuating element. The piston is subjected to a high pressure differential. According to the invention, fine grooves which run very close to one another are configured in at least one part of the guiding surface of the piston. The grooves ensure hydraulic pressure compensation on the periphery of the guiding surface, thus reducing wear, and prevent leakage in a longitudinal guiding direction.

High-pressure piston cylinder unit

The invention relates to a fuel injection nozzle for an internal combustion engine, especially of a common-rail injection system. The injection nozzle contains a nozzle needle which is coupled to an actuating element that serves to control a nozzle opening process. The nozzle needle comprises a needle point and a valve seat which interacts with the same. The valve seat has a conical sealing surface with an opening angle &agr; , and the needle point has a conical sealing surface with an opening angle &agr; . The opening angle &agr; of the sealing surface of the needle point is smaller than the opening angle &agr; sealing surface of valve seat. An expansion, said expansion serving as a cavitation chamber, of a ring-shaped flow channel, is configured between the needle point and the needle housing in the direction of flow of the fuel following the sealing surfaces of the needle point and valve seat. The cavitation chamber is configured and dimensioned to achieve a targeted cavitation results.

Fuel injection nozzle for an internal combustion engine

The present application relates to an injector for use in an internal combustion engine designed to work with fuel/emulsion. Two fuel inlet passages, which are connected to a multichannel distributor and used for feeding fuel from a high pressure hose, are linked with a mixing unit surrounding the nozzle needle. Downstream of the multichannel distributor, in the vicinity of the mixing unit, a make-up liquid inlet passage is connected to a second fuel inlet passage through which the make-up liquid, especially water, is fed to produce emulsified fuel. An amount of make-up liquid V, fed during a pause between two injections from the first make-up liquid supply passage to the second fuel inlet passage, is entirely injected during the following injection phase by the high pressure fuel, supplied as a make-up fuel by a shift valve device, into the combustion chamber of the internal combustion engine, so that the second fuel inlet passage and the fuel capacity of the injector are both entirely flushed by the make-up fuel, thereby preventing, during the working breaks of the internal combustion engine, any corrosion by water rests from the emulsion which might remain in the injector.

Growing community of inventors

Meckenbeuren, Germany

Bernd Danckert