Patents by Inventor Gottfried Hogh

Gottfried Hogh 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).

  • Adaptive lean limit air fuel control using combustion pressure sensor feedback
    Patent number: 4736724
    Abstract: Controlling operation of an internal combustion engine at lean air fuel ratios uses an in-cylinder pressure sensor. The in-cylinder pressure sensor is coupled to each cylinder of the engine and measures in-cylinder pressure and generates an output signal as a function of such pressure. Airflow into the engine is also sensed and both the airflow and in-cylinder pressure are applied to the fuel controller for generating a fuel injection drive signal. Compensation means coupled to the in-cylinder pressure sensor means and airflow indication means modify the fuel air command applied to the engine as a function of airflow and in-cylinder pressure. The compensation means is also coupled to the fuel controller for applying a fuel command signal to the fuel controller thereby permitting engine operation at the lean air fuel ratio limit.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: April 12, 1988
    Assignee: Ford Motor Company
    Inventors: Douglas R. Hamburg, Gottfried Hogh, Gerald P. Lawson