Torque estimation for engine speed control

Details Torque estimation for engine speed control Torque estimation for engine speed control

1995-11-29

1996-11-26

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

F02D 3100

Patent

active

055774741

ABSTRACT:
Engine torque control as a function of a steady state and a transient torque control command to drive engine speed toward a target engine speed provides for a correction to the steady state torque control command to account for unmodelled effects of such slowly changing parameters as ambient temperature and pressure and engine coolant temperature, by determining a difference between an expected and an actual engine control parameter as function of the current engine operating level, translating such difference to an engine torque requirement deviation caused by unmodelled effects, and providing a torque correction therefor so that compensation may be provided in an appropriate manner for the unmodelled effects. The torque correction may further be stored as a function of the current value of the slowly changing parameters to develop a stored model which may be accessed, once developed, to provide the compensation with minimum on-line computation.

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