Patent ID: 6363910
Filing Date: 2002-04-02
Classification: B60K,B60W,F02D,G05B

Abstract:
An apparatus for limiting a speed of an engine, the apparatus comprising:a controller for defining a torque setpoint for the engine as a manipulated variable, the torque setpoint being defined as a function of a difference between an actual speed value and a speed limit value or speed limit function, the actual speed value defining a controlled variable, the controller including a torque setpoint determining device for further determining the torque setpoint as a function of a gradient of the controlled variable and a torque reduction determining device for determining a reduction torque as a function of the gradient of the controlled variable and of an actual torque value; and a subtraction stage in working engagement with the controller for further defining the torque setpoint as a function of an anticipated torque, the subtraction stage determining the anticipated torque from a difference between the reduction torque and the actual torque value.