Engine torque control

Details Engine torque control Engine torque control

1998-09-29

2000-03-07

Dolinar, Andrew M.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

731173, G01L 300, G01M 1500

Patent

active

060352523

ABSTRACT:
The present invention relates to an apparatus (1) and a method for quantifying the net torque (28) produced by an internal combustion engine, for example, in a motor vehicle. Nominal gross engine torque (2) and expected torque losses (17,19,21) associated with the engine (102) are estimated. Estimated net torque (28) from the gross engine torque (2) and expected torque losses (17,19,21) are calculated. If it is determined that no power is drawn through the gearbox, a corrective torque loss value (21) corrects the estimated expected torque losses associated with the engine (102)

REFERENCES:
patent: 5010866 (1991-04-01), Ohata
patent: 5484351 (1996-01-01), Zhang et al.
patent: 5771482 (1998-06-01), Rizzoni
patent: 5866809 (1999-02-01), Soderman

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