Bayerische Motoren Werke Aktiengesellschaft

Other

B Ayerische M Otoren W Erke a Ktiengesellschaft

Juergen Ringler

Michael Preis

Hans Fickel

Malcolm James Grieve

John G Noetzel

Michael Thomas Faville

John F O'Brien

Joachim Bettendorf

Jochem Huber

Bernhard Staar

Juergen Kammerer

Christian Liebl

An operating method for a system including a reformer which in reformate mode can convert hydrocarbon-containing fuel to a hydrogen-rich reformate gas, and a catalytic exhaust gas aftertreatment device which is acted upon by reformer gas to reach the catalytic converter light-off temperature more rapidly. During cold starts, the reformer, after its own starting phase, is initially operated in a so-called lean-burn mode, and the reformer is switched from lean-burn mode to reformate mode as soon as combustible constituents in the catalytic aftertreatment device can be independently oxidized. During the reformer lean-burn mode, the combustible constituents of the engine's exhaust gas react with the hot reformer gas, such that the cumulative exhaust gas flow has the composition of exhaust gas generated by stoichiometric combustion.

Operating method for a system composed of a reformer and a catalytic exhaust gas aftertreatment device

A method is provided for operating a bivalent internal combustion engine, which may run lean with using a fuel with wide inflammability limits, such as hydrogen, whereby a first lean region close to the stoichiometric air ratio and a second lean region, adjacent to the first in the direction of greater &#x3bb; valve are defined. The operation in the first lean region is skipped such that operation occurs either in the second lean region or at an approximately stoichiometric air ratio.

Method for operation of an internal combustion engine running on hydrogen

For the regeneration of an NOstorage catalyst by means of hydrogen in a secondary hydrogen process, the hydrogen required for the regeneration is taken from a primary hydrogen process.

Process for the catalytic exhaust gas aftertreatment of engine combustion emissions

A fuel cell system is disclosed. A fuel cell stack is in fluid communication with a reformer. An air conditioning system is in fluid communication with the reformer. Methods of making and using a fuel cell system are also disclosed.

Water recovery for a fuel cell system

The invention relates to a method and an apparatus for conveying a cryogenically-stored fuel to an internal-combustion engine for providing a combustible working gas. In accordance with the invention, the cryogenically-stored fuel is drawn, in the liquid state, from a thermally-insulated fuel tank, and forced into a fuel line by a conveying device. At least from time to time, within the scope of the operation of the conveying device, the pressure in the fuel tank is increased by an amount that is larger than the difference between a drop in the supply-flow pressure occurring on the intake side of the conveying device and the difference between the dominant tank pressure at a pump-inlet point and the boiling pressure dictated by the instantaneous fuel temperature.

Method and apparatus for conveying a cryogenically-stored fuel

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Kissing, Germany

Juergen Ringler