초록 ▼

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 int

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.

대표청구항 ▼

[ What is claimed is:] [1.] A system for controlling output torque characteristics of an internal combustion engine, comprising:a torque converter coupled at one end to an internal combustion engine and at an opposite end to a transmission, said torque converter operating in a lockup mode when said

[ What is claimed is:] [1.] A system for controlling output torque characteristics of an internal combustion engine, comprising:a torque converter coupled at one end to an internal combustion engine and at an opposite end to a transmission, said torque converter operating in a lockup mode when said torque converter couples said engine directly to said transmission and otherwise operating in a torque converter mode;means for producing a first signal indicative of whether said torque converter is operating in said lockup mode or in said torque converter mode; anda control computer responsive to said first signal to limit an engine output parameter to a maximum engine output parameter value within a predefined engine speed range if said first signal indicates that said torque converter is operating in said torque converter mode.