Air/fuel ratio control apparatus that uses a neural network

Details Air/fuel ratio control apparatus that uses a neural network Air/fuel ratio control apparatus that uses a neural network

1997-05-28

1999-06-29

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123682, 123689, 701106, 701109, F02D 4114

Patent

active

059153687

ABSTRACT:
An air/fuel ratio control apparatus for executing auxiliary control of an air/fuel ratio by compensating an injected fuel amount set by a control system for maintaining the air/fuel ratio at a preset value. The air/fuel ratio control apparatus includes a state detecting unit for detecting a plurality of physical values which can be measured at low temperature and which show a state of an engine, an air/fuel ratio estimating unit for receiving a plurality of physical values detected by the state detecting means as input parameters and for estimating the air/fuel ratio using a neural network, and a compensatory fuel amount calculating unit for calculating a compensatory fuel amount for the injected fuel amount from the estimated air/fuel ratio. Here, low temperature refers to a temperature at which an air/fuel sensor cannot operate.

REFERENCES:
patent: 4887575 (1989-12-01), Takahashi
patent: 5657737 (1997-08-01), Ishida et al.
patent: 5755212 (1998-05-01), Ajima

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