Fuel control apparatus

摘要

The invention, described herein, is an improved Fuel Injection Servo (“Servo”) for the homebuilt aircraft. The Servo has been designed to allow the manufacturer to more easily fine tune the pressure differential over the air diaphragm. The Servo also provides an idle valve that the manufacturer and homebuilder can easily fine tune. In a second embodiment, the Servo is further adapted to replace the carburetor in smaller aircraft.

主权项

1. In a fuel injection system for an internal combustion engine, said fuel injection system comprising:
(a) an air passage mechanism where the air passage mechanism comprises a central section;
(i) where the central section defines a plenum allowing air passage through the air passage mechanism;(ii) where the central section further comprises a venturi and a throttle valve mounted within the plenum; where flow of air through the air passage mechanism generates an air pressure differential which is the difference between impact pressure and venturi suction pressure;(iii) the air passage mechanism comprising an air pressure differential adjustment mechanism comprising a single venturi suction tube and a shim; where the venturi suction tube is configured to allow measurement of the venturi suction pressure; where the venturi tube is attached to the shim; where the shim is mounted within the plenum and configured to be manipulated to adjust the location of the venturi suction tube to thereby adjust the venturi suction pressure; (b) a fuel pressure modifying mechanism which receives fuel from a supply and delivers the fuel at a pressure different from the supply comprising a fuel regulator and an idle valve; and (c) a fuel metering mechanism.