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U.S. Department of Energy
Office of Scientific and Technical Information

Varying area fuel system for combustion engine

Patent ·
OSTI ID:5330575
The patent describes a fuel injection apparatus for a spark ignition internal combustion engine having at least one cylinder and an air inlet, and injection nozzle for injecting fuel into the cylinder, a fuel feed line for supplying fuel under pressure to the injection nozzle, the fuel feed line being one leg of a return fuel circuit. The fuel circuit further including a fuel reservoir, a pump for pumping fuel from the reservoir and for creating pressure in the fuel feed line, a pressure relief valve communicating with the fuel circuit for maintaining a predetermined pressure, valve means connected in the fuel circuit between the fuel feed line and the nozzle for controlling the amount of fuel to the nozzle, driver controlled throttle valve means in the air inlet, means for controlling the fuel circuit valve means so that the amount of fuel is at least partially directly related to the position of the throttle valve means, an air valve upstream of the throttle valve means for controlling air flow to the air inlet, and means for opening the air valve in response to increased air demand by the engine, the amount of fuel and the position of the air valve being controlled independently of each other.
Assignee:
William D. Adams and Karen M. Adams, Austell, GA
Patent Number(s):
US 4721085
OSTI ID:
5330575
Country of Publication:
United States
Language:
English