Fuel blending ratio inferring method

Details Fuel blending ratio inferring method Fuel blending ratio inferring method

1998-02-20

2000-01-25

Solis, Erick R.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123 1A, 123575, F02D 4100

Patent

active

060167963

ABSTRACT:
A fuel blending ratio inferring method responsive to an air/fuel feedback control system for an internal combustion engine is disclosed having a feedback correction loop generating a feedback variable derived from an output of an exhaust gas sensor. A fuel blending ratio is inferred in response to a refueling indication by observing the size and magnitude of the feedback variable. Thus, the effect of the fuel blend can be isolated from other errors in the feedback control system.

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