Patents by Inventor Fritz Ehrhart

Fritz Ehrhart 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).

  • Fuel supply assembly for mixture-compressing internal combustion engines and associated methods of operation
    Patent number: 4543939
    Abstract: A fuel supply assembly for a gasoline internal combustion engine in which the amount of fuel supplied is controlled by an electromagnetic injection valve which in turn is controlled by an electronic controller subjected to operating parameters. The assembly comprises a fuel metering device and a vane pump in which is supplied a branch stream of air tapped from an inlet duct upstream of the throttle valve. The fuel is introduced into the pump chamber downstream of the air and both the fuel and air are supplied to the pump chamber substantially tangentially to be mixed for the first time in the pump chamber.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: October 1, 1985
    Assignee: Pierburg GmbH & Co. K.G.
    Inventors: Fritz Ehrhart, Asoke Chattopadhay, Karl Schmidt