Patents by Inventor Roger Machetel

Roger Machetel 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).

  • Electronic controller for controlling the air/fuel ratio of the mixture supplied to an internal combustion engine
    Patent number: 4391251
    Abstract: A digital electronic controller for an engine equipped with an oxygen detor located along the exhaust path of the gases and a carburettor equipped with electrovalves for regulating the fuel flow rate.This controller comprises digital circuits for closed loop and open loop regulation including a digital memory in which the carburettor regulation value is permanently stored, a logic circuit for controlling the operating modes and a plurality of amplifiers for controlling the electrovalves of the carburettor.This controller makes it possible to reduce the pollution level of motor vehicles.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: July 5, 1983
    Assignee: Groupement d'Interet Economique de Recherche et de Developpement PSA
    Inventors: Pierre Planteline, Roger Machetel