Patents by Inventor Dariusch Akhavan

Dariusch Akhavan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Testing and calibration device for an oxygen probe evaluation circuit and method of use of the device
    Patent number: 6960290
    Abstract: A testing and calibrating device for an evaluation circuit of a linear oxygen probe (S) of an internal combustion engine is disclosed. Said device comprises a probe equivalent circuit (SES) having the same terminals (Vs+, Vs?/Vp?, Vp+ and Rc) as the oxygen probe (S). The probe equivalent circuit can largely emulate the electrical and chemical behaviors of the oxygen probe (S) and simulate probe faults and, at least during a testing and calibrating process, is connected to the evaluation circuit in place of the oxygen probe (S) or is connected parallel to said oxygen probe.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: November 1, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Dariusch Akhavan, Stephan Bolz
  • Testing and calibrating device for an evaluation circuit for a linear oxygen probe (lambda probe)
    Publication number: 20030080003
    Abstract: A testing and calibrating device for an evaluation circuit of a linear oxygen probe (S) of an internal combustion engine is disclosed. Said device comprises a probe equivalent circuit (SES) having the same terminals (Vs+, Vs−/Vp−, Vp+ and Rc) as the oxygen probe (S). The probe equivalent circuit can largely emulate the electrical and chemical behaviors of the oxygen probe (S) and simulate probe faults and, at least during a testing and calibrating process, is connected to the evaluation circuit in place of the oxygen probe (S) or is connected parallel to said oxygen probe.
    Type: Application
    Filed: November 22, 2002
    Publication date: May 1, 2003
    Inventors: Dariusch Akhavan, Stephan Bolz