Abstract: A controlled system (10) has a control means (12) supplying a manipulated input, Y, to a plant (14). The control means (12) has external inputs V, input control model parameters C, and a predetermined mathematical model to compute a desired controlled system output X.sub.D into Y as a function of V and C. The method for operating the controlled system (10) includes establishing an initial value for C, measuring V, and generating an initial model for generating Y from X.sub.D as a function of V and C. The method also includes correcting C as a function of the difference between X.sub.D and the actual controlled system output, X, and as a function of measured external inputs V.

Abstract: A fuel injection fuel supply system for an automotive type internal combustion engine in which a single fuel injector injects all of the fuel in equal amounts to each of the engine cylinders through an atmospheric air chamber from which fuel is discharged and combined with the air for atomization of the fuel and passage of an emulsion of air and fuel into each individual engine intake port.

Abstract: A very low pressure fuel injection system uses an engine driven mechanical fuel pump to supply fuel at low pressure to a fuel devaporizing chamber normally filled with liquid fuel and in which is immersed the body portion of an electronically opened fuel injector positioned to spray fuel axially into the upper end of the induction passage of an air throttling body, the chamber containing a fuel pressure accumulator and a fuel pressure regulator maintaining the fuel pressure at a level slightly below the pump delivery pressure and at the injection level, the fuel chamber being rapidly purged of vapors during engine cranking and running operations.