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AFRcorrected = (AFRmeasured + B x P) / (1 + C x P)
where: AFRcorrected = the AFR corrected for exhaust pressure.
AFRmeasured = the AFR output by the AFM1000.
B = 0.009140 for AFR < 14.57 (rich).
B = 0.012100 for AFR ≥ 14.57 (lean).
C = 0.000627 for AFR < 14.57 (rich).
C = 0.000830 for AFR ≥ 14.57 (lean).
P = the exhaust pressure in mmHg above the pressure at which the
sensor was calibrated (using the CAL POT on the AFM1000 while
the sensor is held in air).
6
[Equation 7]
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