Fuel metering control system for internal combustion engine

Details Fuel metering control system for internal combustion engine Fuel metering control system for internal combustion engine

1995-08-14

1998-02-24

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123684, 123686, 123687, 123694, 123696, F02D 4114

Patent

active

057202656

ABSTRACT:
A fuel metering control system for an internal combustion engine, having a feedback loop. In the system, the quantity of fuel injection (Tim) to be supplied to the engine (plant) is determined outside of the feedback loop. A first feedback correction coefficient (KSTR) is calculated using an adaptive law, while a second feedback correction coefficient (KLAF), whose control response is inferior to that of the first feedback correction coefficient, is calculated using a PID control law. The feedback correction coefficients are calculated such that the plant output (air/fuel ratio) is brought to a desired value (desired air/fuel ratio). The coefficients are calculated at least in parallel and either of them is selected to be multiplied by the quantity of fuel injection (Ti).

REFERENCES:
patent: 5343701 (1994-09-01), Douta et al.
patent: 5558075 (1996-09-01), Maki et al.
Computrol (Corona Publishing Co., Ltd.) No. 27, pp. 28-41, published Jul. 10, 1989.
Automatic Control Handbook (Ohm Publishing Co., Ltd.) pp. 703-707, published Oct. 30, 1983.
"A Survey of Model Reference Adaptive Techniques --Theory and Applications" by I.D. Landau In Automatica, vol. 10, pp. 353-379 published Jun. 18-21 1973.
"Unification of Discrete Time Explicit Model Reference Adaptive Control Designs" by I.D. Landau et al. In Automatica, vol. 17, No. 4, pp. 593-611, 1981.
"Combining Model Reference Adaptive Controller and Strochastic Self-tuning Regulators" by I.D. Landau In Automatica vol. 18, No. 1, pp. 77-84, published Aug. 1981.
U.S. Serial No. 08/401,430 filed Mar. 9, 1995 by Maki et al.

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