Constant mass air-fuel ratio fluidic fuel-injection system
AssigneeThe United States of America as represented by the Secretary of the Army
InventorRobert L. Woods
Life of this patent
Estimating the term…
Abstract
A fluidic implementation of a constant mass airfuel ratio fuel-injection system which may be utilized, for example, in an internal combustion engine. The system includes a fluidic mass air flow sensor that produces a pressure oscillation in direct proportion to the mass air flow to the engine. The frequency of this oscillation is utilized to control a fuel flow metering device which delivers a fixed amount of fuel per oscillation cycle. In one preferred embodiment, the metering device may comprise a fixed displacement piston pump. In an alternative embodiment, the metering device comprises a constant pulse-width fluidic amplifier.
Claims9
In an internal combustion engine having an intake port, the improvement which comprises a constant mass air-fuel ratio fuel-injection system which comprises:
- fluidic mass air flow sensor means for producing pressure oscillations in direct proportion to the mass air flow to said engine;
- a source of fuel;
- and
- means responsive to said pressure oscillations for delivering a constant amount of fuel from said source to said engine per oscillation cycle.
Dependencies are inferred from the claim text.