Title:
センサ素子のポンプ電流を修正する方法
Document Type and Number:
Japanese Patent JP5727602
Kind Code:
B2
Abstract:
A method for operating a sensor element, in particular a lambda sensor, for determining the concentration of a gas component of a gas mixture, in which the gas component is removed from a measuring gas chamber by applying a pump voltage and the concentration of the gas component in the gas mixture is inferred therefrom. Oscillations of the pump current caused by dynamic pressure variations are taken into consideration for a correction of the sensor signal in that a frequency analysis of the pump current is carried out.
Inventors:
Lele, Hartwig
Reinhard, Getz
Deal, rotor
Sailer, Thomas
Reinhard, Getz
Deal, rotor
Sailer, Thomas
Application Number:
JP2013517221A
Publication Date:
June 03, 2015
Filing Date:
June 27, 2011
Export Citation:
Assignee:
Robert Bosch GmbH
International Classes:
G01N27/26; G01N27/419
Domestic Patent References:
| JP2010038794A | ||||
| JP6273381A | ||||
| JP4204246A |
Foreign References:
| WO2008154366A1 | ||||
| WO2007119311A1 |
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto