Fuel injection control apparatus

Details Fuel injection control apparatus Fuel injection control apparatus

1996-02-16

1997-04-29

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123687, 123690, F02D 4114, G06G 770

Patent

active

056239130

ABSTRACT:
A fuel injection apparatus for internal combustion engine of this invention applies detection output of a wide-range air/fuel ratio sensor to an observer so as to estimate an air/fuel ratio of individual cylinder and, based on thus estimated air/fuel ratio, obtains an air/fuel ratio correction coefficient for individual cylinder and correctively controls the fuel injection amount for individual cylinder with the air/fuel ratio correction coefficient for individual cylinder. While the estimation processing of the observer is always continued, the air/fuel ratio correction coefficient for individual cylinder is automatically adjusted, for example, when the estimated air/fuel ratio becomes an abnormal value, according to operational condition of the internal combustion engine, and the like, thereby securing the stability in the corrective control and preventing the emission from deteriorating. Also, the calculation processing of the air/fuel ratio correction coefficient for individual cylinder is thinned out at a predetermined timing in response to increase in the engine speed, for example, to shorten the corrective control, thereby achieving the purification of the exhaust gas even when the internal combustion engine is at a high speed.

REFERENCES:
patent: 4934328 (1990-06-01), Ishii et al.
patent: 5020502 (1991-06-01), Wild
patent: 5131371 (1992-07-01), Wahl et al.
patent: 5462037 (1995-10-01), Hasegawa et al.
patent: 5548514 (1996-08-01), Hasegawa et al.
patent: 5566071 (1996-10-01), Akazaki et al.
"Comptrol", Computer and Application's Mook, No. 27, Jul. 10, 1989, pp. 28-41.
"Automatic Control Handbook", Ohm, Ltd., Japan, pp. 701-707, Oct. 1983.
"A Survey of Model Reference Adaptive Techniques -Theory and Applications", Landau, Automatica, vol. 10, Jan. 1974, pp. 353-379.
"Unification of Discrete Time Explicit Model Reference Adaptive Control Designs", Landau et al, Automatica, vol. 17, No. 4, Jan. 1981, pp. 593-611.
"Combining Model Reference Adaptive Controllers and Stochastic Self-tuning Regulators", Landau, Automatica, vol. 18, No. 1, Jan. 1982, pp. 77-84.

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