The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2011
Filed:
Feb. 23, 2006
Erhard Renninger, Markgroeningen, DE;
Gerhard Hueftle, Aspach, DE;
Joerg Brueckner, Sindelfingen, DE;
Bernhard Opitz, Leonberg, DE;
Bernd Kuenzl, Schwieberdingen, DE;
Uwe Konzelmann, Asperg, DE;
Ulrich Wagner, Stuttgart, DE;
Henning Marberg, Weil Der Stadt, DE;
Christoph Gmelin, Stuttgart, DE;
Matthias Illian, Gerlingen, DE;
Erhard Renninger, Markgroeningen, DE;
Gerhard Hueftle, Aspach, DE;
Joerg Brueckner, Sindelfingen, DE;
Bernhard Opitz, Leonberg, DE;
Bernd Kuenzl, Schwieberdingen, DE;
Uwe Konzelmann, Asperg, DE;
Ulrich Wagner, Stuttgart, DE;
Henning Marberg, Weil Der Stadt, DE;
Christoph Gmelin, Stuttgart, DE;
Matthias Illian, Gerlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To determine air mass flows, especially for controlling internal combustion engines, a hot-film air-mass sensor is provided, which may be used especially for sensing air mass flows in the intake tract of an internal combustion engine. The hot-film air-mass sensor has a sensor chip having a sensor frame and a sensor diaphragm having at least one heating element and at least two temperature sensors. Furthermore, the hot-film air-mass sensor has a chip carrier for mounting the sensor chip, as well as at least one additional heating element. The sensor chip is able to be heated up using the at least one additional heating element, which is inserted into the chip carrier. Compared to the usual devices, the hot-film air-mass sensor has a lower susceptibility to contamination, especially by oil films.