Patents Represented by Attorney, Agent or Law Firm Leydig, Voit & Mayer, Inc.
  • Apparatus for air/fuel ratio control
    Patent number: 6752135
    Abstract: A control valve module for gaseous fuels on spark ignited reciprocating engines is presented. The control valve module has a valve that controls gaseous fuel flow to a mixer or other device for air/fuel ratio control, an actuator for moving the valve position, and a controller. The controller receives a signal from a heated exhaust gas oxygen (HEGO) sensor that is an indication of the fuel/air ratio and actuates the valve to control the combustion mixture to a precise stoichiometric ratio.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: June 22, 2004
    Assignee: Woodward Governor Company
    Inventors: Bryant K. McLaughlin, Justin L. Fulton, Larry O. Gray, Doyle Kent Stewart, Gary McDaniel