Cylinder fuel injection engine controller

Details Cylinder fuel injection engine controller Cylinder fuel injection engine controller

1998-01-30

1999-05-18

Solis, Erick R.

Internal-combustion engines

Engine speed regulator

Idle speed control

12333916, 12333924, 123295, F02D41/16

Patent

active

059041285

ABSTRACT:
A cylinder fuel injection engine controller for controlling a cylinder fuel injection engine is capable of controlling the cylinder fuel injection engine for operation at a stable idling speed regardless of the variation of engine speed and load on the cylinder fuel injection engine while the cylinder fuel injection engine is cold and stratified combustion is impossible. The cylinder fuel injection engine controller comprises: a basic fuel injection quantity determining means for determining a basic fuel injection quantity (Tp1), a reference fuel injection quantity determining means for determining a reference fuel injection quantity (Tp2) from an engine speed and an accelerator pedal position; and a target fuel injection quantity calculating means for determining a target fuel injection quantity (Tp3) by multiplying the reference fuel injection quantity (Tp2) by a desired A/F ratio and dividing the product of the multiplication by the stoichiometric A/F ratio. The cylinder fuel injection engine controller is characterized by a reference fuel injection quantity adjusting means for adjusting the reference fuel injection quantity (Tp2) for engine speed control and/or load correction during idling operation. Fuel injection quantity (Tp) to be supplied to the engine and intake air quantity (Q) are controlled simultaneously and separately on the basis of the reference fuel injection quantity (Tp2).

REFERENCES:
patent: 4721082 (1988-01-01), Hibino et al.
patent: 5628290 (1997-05-01), Iida et al.

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