Patents by Inventor Peter H. Maehling

Peter H. Maehling 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).

  • Apparatus and method for diagnosing an airflow modifying control system
    Patent number: 7647158
    Abstract: An apparatus and method for diagnosing an airflow control system of an internal combustion engine, the method comprising: determining if a valve is in a stable position; commanding the valve of the airflow control system to move from a first position to a second position; determining a period of time for the valve to move from the first position to the second position; providing a first signal if the period of time is greater than or less than a predetermined period of time, the predetermined period of time corresponding to an amount of time necessary to move the valve from the first position to the second position under predetermined conditions; and providing a second signal if the period of time is within a range defined by the predetermined period of time.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: January 12, 2010
    Assignee: Delphi Technologies, Inc.
    Inventors: Kenneth M. Simpson, Peter H. Maehling
  • APPARATUS AND METHOD FOR DIAGNOSING AN AIRFLOW MODIFYING CONTROL SYSTEM
    Publication number: 20080091330
    Abstract: An apparatus and method for diagnosing an airflow control system of an internal combustion engine, the method comprising: determining if a valve is in a stable position; commanding the valve of the airflow control system to move from a first position to a second position; determining a period of time for the valve to move from the first position to the second position; providing a first signal if the period of time is greater than or less than a predetermined period of time, the predetermined period of time corresponding to an amount of time necessary to move the valve from the first position to the second position under predetermined conditions; and providing a second signal if the period of time is within a range defined by the predetermined period of time.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 17, 2008
    Inventors: Kenneth M. Simpson, Peter H. Maehling