System for controlling output torque characteristics of an inter

Details System for controlling output torque characteristics of an inter System for controlling output torque characteristics of an inter

1999-11-22

2000-12-26

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Including fluid drive

477168, 477181, F16H 6148

Patent

active

061651028

ABSTRACT:
A system for controlling output torque characteristics of an internal combustion engine includes a control computer operable to control the output power/torque of the engine that is coupled to a transmission through a torque converter. The system is operable to determine an engine speed range of interest and limit engine output power/torque to a predefined maximum value if the current engine speed is within the engine speed range of interest when the torque converter is operating in torque converter mode (i.e., not in lockup mode). The predefined maximum value of engine output power/torque is preferably a maximum horsepower value that may be a constant value or a function of engine speed within the engine speed range of interest. Alternatively, the predefined maximum value of engine output power/torque is a dynamic function of a torque ratio of the torque converter and a predefined turbine torque limit.

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