Patents by Inventor Robert H. Jamrog

Robert H. Jamrog 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).

  • Closed loop air/fuel ratio controller
    Patent number: 4625698
    Abstract: A closed loop air/fuel ratio controller for an internal combustion engine is disclosed in which a proportional term is based on a fast filtered air/fuel ratio signal and an integral term is based on a slow filtered air/fuel ratio signal as well as the magnitude of the air/fuel ratio error outside of a deadband and the rich-lean conditions of the fast and slow air/fuel ratio signals.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: December 2, 1986
    Assignee: General Motors Corporation
    Inventor: Robert H. Jamrog