Patents by Inventor Yanqi Zu

Yanqi Zu 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).

  • METHOD FOR DIAGNOSING A LOAD DROP
    Publication number: 20110140685
    Abstract: A method for diagnosing a load drop in a piezo actuator in an injection device, a voltage being measured and being compared to a threshold voltage (24) for the diagnosis, the load drop being present if the measured voltage is greater than the threshold voltage (24). The present invention also relates to a device for diagnosing a load drop in a piezo actuator in an injection device, to a computer program and to a computer program product.
    Type: Application
    Filed: April 22, 2009
    Publication date: June 16, 2011
    Inventors: Yanqi Zu, Stefan Schempp, Matthias Bitzer
  • METHOD AND DEVICE FOR MONITORING A PIEZO ACTUATOR
    Publication number: 20110101992
    Abstract: The invention describes a device and a method for monitoring a piezoelectric actuator. It is checked whether a discharge time assumes an inadmissible value, whether the voltage at the piezoelectric actuator assumes an inadmissible value and whether a fault signal is present. A short circuit of a battery switch is detected if the three conditions are met.
    Type: Application
    Filed: March 30, 2009
    Publication date: May 5, 2011
    Applicant: ROBERT BOSCH GMBH
    Inventors: Yanqi Zu, Stefan Schempp, Michael Danic, Matthias Bitzer