Patents by Inventor Edward P. Darragh

Edward P. Darragh 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).

  • Patent number: 4217862
    Abstract: Diesel fuel injection system in which a standing high-pressure wave is maintained in the common rail and which utilizes injectors which function as gates or valves. Electronic controls sensitive to engine demands based on speed and load electronically control the injectors to vary both moment and duration of fuel injection time. Input signals, as determined by engine speed by way of the distributor, vary the injection timing according to an advance curve at the distributor correlated to piston position. Duration of the injection cycle (quantity of fuel injected) is controlled electronically and variably in relation to throttle position.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: August 19, 1980
    Assignee: Combustion Research & Technology, Inc.
    Inventors: Leonard N. Fort, Albert F. Albert, Edward P. Darragh