Cold start fuel control system for an internal combustion engine

A cold start fuel control system for use with an internal combustion engine of the type having at least one combustion chamber, an air/fuel passageway fluidly connected with the combustion chamber and a source of fuel, said fuel control system comprising:

• an annular heater having an interior annular wall disposed in the passageway,
• a cold start fuel injector having an inlet fluidly connected to said fuel source and an outlet open to said passageway such that fuel discharge from said outlet enters into an interior of said heater,
• means for measuring an operating temperature of the engine and for providing a temperature output signal representative,
• means responsive to said temperature output signal whenever said temperature output signal is less than a predetermined amount for selectively activating said cold start fuel injector and for activating said heater,
• means for enhancing intermixing of said fuel with said air in said passageway, said intermixing enhancing means comprising means for swirling fuel discharge from said cold start fuel injector such that at least a portion of the fuel charge impinges upon said heater interior annular wall.