Power plant and generating unit

Claim 1

An improved portable plant for supplying electrical energy to an intermittently consuming current apparatus, said plant comprising an internal combustion engine comprising a spark ignition system including a generator having a first current producing coil connected for providing spark ignition and a second current producing coil, said engine being provided with a speed adjusting throttle means and speed governor means sensitive to the speed of the engine and biased by spring means tending to throttle the engine to maintain the engine speed at a given service speed upon actuation of said throttle means; and a main current generator connected to said engine to be driven thereby and having a power output connectable to said intermittently current consuming apparatus, wherein the improvement comprises output sensing means producing a signal indicative of substantial presence or absence of an electrical load at said power output; a speed governor bias relieving means for setting said governor to govern and maintain said engine at a low idle speed; a signal responsive actuator arranged for actuating said governor bias relieving means when a signal indicative of substantial absence of an electrical load at said power output is sensed, said actuator comprising an electromagnetic device having coil means connected to said second coil to be energized thereby and a movable core forming part of said bias relieving means and arranged for relieving the application of the spring force on said speed governor upon energization of said electromagnetic device; and signal responsive switching means connected between said second coil and said device.