Fuel supply system
OwnerHarold E. Phelpsinventor
Life of this patent
Estimating the term…
Abstract
A closed loop fuel supply system for operating engines in all possible attitudes in which fuel is delivered by a vacuum pump responsive to the vacuum level in the crankcase of the engine and in which the vacuum driving the pump is modulated in response to the pressure of fuel being delivered to the fuel supply system so that the amount of fuel delivered for combustion purposes is equal to the requirements of the engine without any excess. In another embodiment, the delivery of pulsating fuel is dampened to obtain a uniform fuel delivery and distribution to the combustion chamber is under the control of three shutoff valves operating throughout the speed range of the engine. In each embodiment fuel is conserved and a fuel return line is not required.
Claims11
A closed loop fuel system for supplying fuel to an engine in all of its positions including an inverted position, comprising:
- a housing having mixing passage for supplying a mixture of fuel and air to the engine,
- a throttle valve in said mixing passage for controlling the supply of fuel and air mixture to the engine,
- a pump operative in response to vacuum pulsations in the crankcase of the engine and having a fuel inlet for receiving fuel and a fuel outlet for delivering fuel,
- fuel distribution means receiving fuel from said pumps and delivering fuel to said mixing passage, said distribution means including a first fuel passage communicating with said mixing passage downstream of said throttle valve and second and third fuel passages communicating with said mixing passage upstream of said throttle valve, and
- shutoff valves controlling each of said passages and being actuated between open and closed position in response to the position of said throttle valve, each of said valves being in an open position when the other of said valves are closed.
Dependencies are inferred from the claim text.