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:
Apr. 24, 2012
Filed:
Nov. 25, 2008
Jens Schneider, Leonberg, DE;
Detlef Heimann, Gerlingen, DE;
Goetz Reinhardt, Boeblingen, DE;
Henrico Runge, Stuttgart, DE;
Lothar Diehl, Gerlingen, DE;
Juergen Ruth, Stuttgart, DE;
Thomas Seiler, Stuttgart, DE;
Jens Schneider, Leonberg, DE;
Detlef Heimann, Gerlingen, DE;
Goetz Reinhardt, Boeblingen, DE;
Henrico Runge, Stuttgart, DE;
Lothar Diehl, Gerlingen, DE;
Juergen Ruth, Stuttgart, DE;
Thomas Seiler, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A gas sensor for detecting particles in a gas stream has a first electrochemical pump cell, which has a measuring chamber in which a first electrode is disposed to pump particles between the first measuring chamber and the gas stream. Furthermore, a second electrochemical pump cell is provided, which has a second measuring chamber in which a second electrode is disposed so as to pump particles. The second measuring chamber is connected to the gas stream via an absorber medium for absorption of the particles to be detected. This makes it possible to absorb the particles to be detected in a first operating mode using the absorber medium, and to desorb the absorbed particles in a second operating mode, and to detect the quantity of the desorbed particles. Thus, the gas sensor is able to take even low concentrations into account, and short-term measuring errors do not have such a serious effect.