Robert Boschgmbh

Peter Klee

Georg Mallebrein

Gholamabas Esteghlal

Ruediger Weiss

Andreas Posselt

Karl Ott

Marko Lorenz

Andreas Gutscher

Gerd Grass

Joerg Koenig

Gudrun Menrad

Hans Hillner

Johannes Hoegl

Thomas Herges

Roland Kurz

Lilian Kaiser

Thomas Wieczorek

Andreas Pfender

Florian Guenther

The invention relates to a system () and to a corresponding method for tank leakage diagnosis. The system () comprises a fuel tank (), a pressure source (), and a pressure sensor (). The pressure source () is configured to increase the pressure in the fuel tank (). The pressure sensor () is configured to detect the pressure progression at the fuel tank (). The system () is configured to seal the fuel tank () in a gas-tight manner such that the fuel tank () can be used as a pressure store. Furthermore, the system () is configured to conclude, independently of a current operation of the pressure source () based on the determined pressure progression at the fuel tank (), that a leak is present.

Tank leakage diagnosis having a fuel tank as a pressure store

Method and arrangement for operating an internal combustion engine ( ) which is operable in several operating modes, especially an internal combustion engine ( ) having direct injection or intake manifold injection and having a control apparatus ( ). The control apparatus ( ), that is, its software has a plurality of functions ( ) and a scheduler ( ) for activating the functions ( ). The executability of the functions ( ) is determined in dependence upon the operating-mode dependent and operating-mode independent conditions and, with the aid of a bridging signal, the determination of the operating-mode dependent conditions can be disabled.

Method and arrangement for operating an internal combustion engine

The invention is directed to a method of starting an engine for internal combustion engines of a motor vehicle driven by gasoline direct injection with the engines being subdivided into several cylinder banks and a high pressure injection system being provided for each cylinder bank. During a first phase (A), an injection into the cylinders of a first cylinder bank in correspondence to their normal ignition sequence takes place and no injection is carried out in the cylinders of the remaining cylinder banks. In a subsequent second phase (B), injection takes place also into the cylinders of the other cylinder bank or banks.

Method for starting an internal combustion engine having several cylinder banks and being operated with gasoline direct injection

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Knittlingen, Germany

Peter Klee