Flow control system
Patent 5150690 Issued on September 29, 1992. Estimated Expiration Date: 
April 20, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 20, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re29383 2381304 3669081 3726296 3746041 3785389 3875964 Electronic controlled manifold injection system Fluid flow control system employing a plurality of digital valve elements Digital fluid flow control system with trim adjustment InventorsAssigneeApplicationNo. 512300 filed on 04/20/1990US Classes:123/527, Gaseous fuel and air mixer123/478, Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)137/599.05, Having digital flow controller137/599.07Electromagnetic or electric control (e.g., digital control, bistable electro control, etc.)ExaminersPrimary: Kamen, Noah P.Attorney, Agent or FirmForeign Patent References
International ClassF02B 043/00Foreign Application Priority Data1989-09-29 CAAbstractA flow control system for use in a compressible fluid-fueled internal combustion engine includes a fluid metering device comprising a plurality of fluid lines for communication between an inlet fluid manifold and a metered fluid manifold. Bistable valves of various orifice sizes are provided, one in each of the fluid lines except for at least two lines, which are provided with pulsing valves. The device also includes sensors for determining parameters of the inlet fluid sufficient to determine potential mass flow of fluid through each of the valves, and valve controls for activating valve actuators to open the valves in combinations and for time intervals to give a desired total mass flow of fluid through the valves. The total fluid flow passing from the metering device comprises a base flow component established by opening selected bi-stable control valves to provide a continuous predetermined flow, discrete step changes in the base flow component being provided by opening and closing combinations of bi-stable control valves. Increments of fluid flow between the discrete steps are provided by opening at least one pulsing valve for a fraction of a predetermined time period to provide a desired average flow over the time period.Other References
Field of SearchFuel flow regulation between the pump and the charge-forming deviceRegulator means adjusts fuel pressure Engine parameter responsive Gaseous fuel and air mixer Heating of combustible mixture Stratification in combustion chamber Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve) Responsive to change in rate of fluid flow Electrically actuated valve ELECTRICALLY ACTUATED VALVE | |
