Patents Represented by Attorney John R. Ducan
  • Patent number: 5566653
    Abstract: An improved starting system for internal combustion engines that normally use a liquid fuel such as gasoline. Gaseous fuels such as hydrogen, natural gas, propane, butane and the like are used in place of the liquid fuel during engine starting and for a selected period thereafter. When starting is initiated, the gasoline introduction system is disabled and introduction of the gaseous fuel in initiated. Rapid engine start promptly occurs, even under very cold ambient conditions. Once the engine has started and has run for a period sufficient to reach a reasonable operating temperature, the gaseous fuel introduction system is interrupted and the gasoline system is enabled and provides the fuel thereafter. If desired, gaseous fuel flow may continue for a short period after liquid fuel flow has begun.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: October 22, 1996
    Inventor: James J. Feuling