Patents by Inventor Lorenzo Belletti

Lorenzo Belletti 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).

  • Device for feeding Otto cycle engines with lean combustible mixtures
    Patent number: 4194476
    Abstract: Lean air/fuel mixture is supplied to the induction manifold of an Otto cycle engine through a heat exchanger heated by engine exhaust gases under normal running conditions, and under idling conditions mixture is supplied to an auxiliary induction manifold solely through an auxiliary duct. The auxiliary duct is wound with an electrical resistive heating element to preheat the mixture upon cold-starting of the engine for a time, typically 30-40 seconds, determined by a timer switch.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: March 25, 1980
    Assignee: Fiat Societa per Azioni
    Inventors: Claudio Lombardi, Lorenzo Belletti