Method and apparatus for inferring engine torque

Measuring and testing – Vehicle chassis – Steering

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G01M 1500

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active

052418553

ABSTRACT:
A method of inferring and predicting engine torque uses a function of a speed/load table, air/fuel ratio and spark advance. The effects of the magnitudes of engine spark retard, rich or lean air/fuel ratios and exhaust gas recirculation are accounted for using a series of multipliers. Friction torque is accounted for through a speed/air charge table look-up.

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patent: 4601270 (1986-07-01), Kimberley et al.
patent: 4915079 (1990-04-01), Holmes
patent: 5060618 (1991-10-01), Takaoka et al.
patent: 5089964 (1992-02-01), Morishige et al.

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