초록 ▼

A governor is disclosed for governing engine and load speed and which is especially adapted for use with motor vehicles. It comprises an overriding throttle closing device with a linear actuator for moving the device to a position for limiting the engine speed and load speed to governed values. An e

A governor is disclosed for governing engine and load speed and which is especially adapted for use with motor vehicles. It comprises an overriding throttle closing device with a linear actuator for moving the device to a position for limiting the engine speed and load speed to governed values. An electronic control circuit comprising a microprocessor operating under program control produces motor control signals for a reversible electric motor which drives the actuator means through a gear train and lead screw. An engine speed signal generator provides an electrical speed signal to the control circuit and a road speed signal generator supplies a load speed signal to the control circuit. When the speed signal exceeds a predetermined value, the control circuit produces motor control signals for operating the motor at full speed to move the actuator to a reference position causing operation in a reference point governing mode. In this mode when the speed signal exceeds the governed value, the control circuit produces motor control circuits for operation of the motor at slow speed in the close throttle direction. When the speed signal is less than the governed speed, the control circuit produces motor control signals for operating the motor at slow speed in the wide open throttle direction. The slow speed of operation is adapted to provide smooth governing action with small overshoot and minimal droop.

대표청구항 ▼

The method of operating a governor for an internal combustion engine which has a throttle movable between an open throttle position and a close throttle position for regulating the flow of fuel to the engine, said governor being of the type comprising an overriding throttle closing means for limitin

The method of operating a governor for an internal combustion engine which has a throttle movable between an open throttle position and a close throttle position for regulating the flow of fuel to the engine, said governor being of the type comprising an overriding throttle closing means for limiting the movement of the throttle in the open throttle direction, said engine being drivingly coupled with a device which is to be governed at a predetermined governed speed and having a speed with a known relationship to the speed of the engine, said method comprising the steps of: moving the overriding throttle limiting means to a reference position when the measured speed exceeds a predetermined value, said overriding throttle limiting means limiting the throttle position to a predetermined throttle position when in the reference position, moving the overriding throttle limiting means at a predetermined slow speed in the close throttle direction when the speed is greater than the governed speed, moving the overriding throttle limiting means at said slow speed in the open throttle direction when the speed is less than the governed speed, said slow speed being slow enough that the overriding throttle limiting means will move from its position at the time of speed measurement to a new position in a time interval at least as great as that required for the measured speed to change from its value corresponding to the position of the overriding throttle limiting means at the time of speed measurement to a new value corresponding to said new position of the overriding throttle limiting means.