Robert Boschgmbh

Kistler Holding Ag

Martin Ammann

Christian Doering

Holger Scholzen

Janpeter Wolff

Michael Mueller

Wolfgang Koetzle

Juergen Krueger

Anke Maier-Schleich

Frank Furter

Anke Maierschleich

A pressure-measuring device for recording a pressure in a combustion chamber of an internal combustion engine, having a force transmission body, situated in a housing, which is exposed to the combustion chamber and which transmits the combustion chamber pressure to a pressure-measuring unit at least indirectly by an axial motion, and having a flexible diaphragm, which is situated between the force transmission body and the housing. The flexible diaphragm is configured to be resilient to implement the axial motion of the force transmission body within the housing. A flexible additional diaphragm is connected ahead of the flexible diaphragm on the combustion chamber side, which seals the flexible diaphragm from the combustion chamber.

Pressure-measuring device with additional diaphragm

A load cell detects wheel forces and/or moments at tire test stands in the laboratory and on mobile test vehicles based on the piezoelectric measurement principle. The load cell comprises a base plate and a cover plate facing the base plate as well as a plate-shaped quartz sensor, arranged between the plates in a laminar manner. The base plate and cover plate are designed in an elongated shape and include two or more of the plate-shaped quartz sensors there between. The plate-shaped quartz sensors are arranged in an array with respect to the longitudinal orientation of the plates and are preloaded by the plates.

Load cell

Growing community of inventors

Felben-Wellhausen, Switzerland

Martin Ammann