Invention Grant
- Patent Title: Gas sensor and method for detecting particles in a gas flow
- Patent Title (中): 气体传感器和气体流中颗粒检测方法
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Application No.: US12277952Application Date: 2008-11-25
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Publication No.: US08163161B2Publication Date: 2012-04-24
- Inventor: Jens Schneider , Detlef Heimann , Goetz Reinhardt , Henrico Runge , Lothar Diehl , Juergen Ruth , Thomas Seiler
- Applicant: Jens Schneider , Detlef Heimann , Goetz Reinhardt , Henrico Runge , Lothar Diehl , Juergen Ruth , Thomas Seiler
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Kenyon & Kenyon LLP
- Priority: DE102007057135 20071128
- Main IPC: G01N27/407
- IPC: G01N27/407

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.
Public/Granted literature
- US20090152130A1 Gas sensor and method for detecting particles in a gas flow Public/Granted day:2009-06-18
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