Patent ID: 7389176

Claim:
An engine output control apparatus of a power train employing an engine and an automatic transmission, capable of executing engine output control for preventing a torque input exceeding an upper limit of transmittable torque transmitted through the power train and for a shift speed control of the transmission, comprising: at least two different kinds of engine output control systems, each of which is executable the engine output control; and a controller comprising: (a) a usable engine output control system decision circuit provided for making a check for each individual engine output control system enabled/disabled state to specify one or more usable engine output control systems by determining, based on an operating condition of the power train, whether the engine output control systems can be individually used for the engine output control to be executed for excessive torque input prevention engine torque limiting action and for shift response control by which a shift speed increase is achieved during shifting; and (b) an engine output control system selection circuit provided for using a first one of the usable engine output control systems having a superior transient response for the engine output control that requires a control response rather than a control stability, and for using a second one of the usable engine output control systems having a superior steady-state stability for the engine output control that requires the control stability rather than the control response.