8241-956 oil motor EG-3P oil pump

The 2301 electric governor is one in which its actuator output (terminal) shaft position is directly proportional to the input signal from its electric control unit. It

can be used in an isochronous (constant speed) mode for single engine operation or when paralleled with similar units on an isolated bus. It can also be

used in the droop mode for paralleling dissimilar units or operating on an infinite bus. The 2301 governor is used in the same type of service as many other

governor models. It is particularly well suited, when used with some types of proportional actuators, to engines operated in tandem to drive a common load. In

such installations, one electric control is used to furnish the same input signal to the proportional actuator on each engine. Since each actuator receives the same

current, their output shafts take the same position and give each engine the same amount of fuel.

8241-956

The 2301 electric governor consists of an electric control unit, a speed setting potentiometer, and a hydraulic actuator. The electric control receives the input

signals to the governor; its output serves as the input signal to the actuator. The actuator output controls the flow of energy medium to the prime mover. The

speed setting potentiometer, used to adjust speed setting, provides one of the inputs to the electric control.

The operation of the 2301 type governor is different and distinct from other electric governors. The steady-state output of the electric control is a level of

voltage determined by the actuator terminal shaft position required to maintain a particular load on the prime mover. The voltage is always the same polarity. This

type of control unit requires an actuator in which the output shaft takes a position proportional to the voltage of the input signal.

In contrast, the electric control unit of the EG series electric governor emits a nominally zero signal during conditions of on-speed, steady-state operation, and

larger voltage signal only during off-speed or load-changing periods. In this type of system, the direction of actuator operation depends on signal polarity.

As is the case with any type governor, the prime mover should be equipped with a separate overspeed device to prevent runaway if a failure should render the governor inoperative.