Adaptive fuel/air mixture adjustment for taking fuel characteris

Details Adaptive fuel/air mixture adjustment for taking fuel characteris Adaptive fuel/air mixture adjustment for taking fuel characteris

1991-06-03

1992-06-16

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123434, F02M 700, F02M 5100

Patent

active

051217325

ABSTRACT:
In methods for adaptively adjusting a fuel/air mixture, the adaptation factor is rapidly adjusted to take fuel characteristics into account when it develops that after tanking, poor control results are obtained with the adaptation factor previously applicable. As soon as there is an adjustment again to good control results, the conventional relatively slow adaptation is carried out. These methods afford the advantage that they can be carried out without special expensive mixture sensors.

REFERENCES:
patent: 4594968 (1986-06-01), Degobert et al.
patent: 4945881 (1990-08-01), Gonze et al.
patent: 4945882 (1990-08-01), Brown et al.
patent: 5007398 (1991-04-01), Kashiwabara
patent: 5018483 (1991-05-01), Kashima et al.

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