Robert Boschgmbh

Andreas Haeffelin

Harald Guenschel

Marcus Ahles

Mark Hellmann

Imke Heeren

Janine Riedrich-Moeller

Maxime Carre

Maren Matter

Christopher Fischer

Christin Feilmeier

The invention relates to a fuel cell system () having at least two fuel cell units () that are respectively designed to be operated independently from each other, wherein the fuel cell system () is designed to provide an amount of heat for activating a second fuel cell unit () of the at least two fuel cell units () from waste heat of a first fuel cell unit ().

Fuel cell system with two fuel cell units which can be operated independently from each other

A semiconductor sensor includes a cavity; a fluid connection between the cavity and an inlet area; a pump diaphragm that bounds the cavity; and a measuring diaphragm that bounds the cavity. The fluid connection includes a diffusion channel having multiple openings in the inlet area or multiple diffusion channels having respectively an opening in the inlet area, and it is possible to close at least one of the openings using laser light in order to influence an effective length or an effective cross section of the fluid connection.

Semiconductor sensor for gas concentration

Growing community of inventors

Vaihingen, Germany

Andreas Haeffelin