Method of fuel injection
OwnerMichael L. McKay, Ian R. Thompson +1inventors
InventorsMichael L. McKay, Ian R. Thompson, Ralph T. Sarich
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Abstract
A method of injecting liquid fuel to an engine comprising delivering a quantity of fuel into a conduit and propelling the fuel along the conduit by a pulse of gas under sufficient pressure to discharge the fuel from an open nozzle into an engine induction passage, or combustion chamber. The pressure and quantity of gas preferably being suficient to cause the fuel to issue from the nozzle at or near sonic speed. The duration of the pulse of gas may be varied with the variation in the quantity of fuel to improve the fuel metering accuracy with engine load changes.
Claims19
A method of delivering liquid fuel to an engine, comprising the steps of:
- collecting a metered quantity of fuel in a chamber, said quantity of fuel varying with the fuel demand of the engine;
- admitting compressed gas to the chamber to displace therefrom a metered quantity of fuel;
- and
- varying the mass of gas admitted to the chamber with variations in the fuel demand of the engine at least over part of the range of the engine fuel demand so that as the fuel demand increases or decreases the mass of gas admitted to the chamber increased or decreases.
An apparatus for delivering a metered quantity of liquid fuel to an engine, comprising:
- a chamber having a selectively openable discharge port;
- means for collecting a metered quantity of fuel in said chamber;
- means for selectively admitting gas to the chamber to displace the fuel therefrom upon opening of the discharge port;
- means for controlling the quantity of fuel collected in the chamber in accordance with engine fuel demand;
- and
- means for varying the mass of gas admitted to the chamber with a variation in the fuel demand so that as the fuel quantity increases the gas mass increases.
A method of delivering liquid fuel to an engine, comprising the steps of:
- collecting a metered quantity of fuel in a chamber;
- varying said metered quantity of fuel in response to the fuel demand of the engine;
- delivering compressed gas to the chamber to displace the metered quantity of fuel and deliver said fuel to the engine;
- and
- varying the mass of gas delivered to the chamber to deliver said fuel in response to the variations in a selected engine condition.
Dependencies are inferred from the claim text.