The speed of the engine is varied by operation of a throttle controlled by a controller containing a predetermined engine map representing variation of engine speed as a function of the variation in electrical power output from the frequency converter to meet {TAIL ~ the demand} of {HEAD ~ an external electrical load} 
The speed of the engine is varied by operation of a throttle controlled by a controller containing a predetermined engine map representing variation of engine speed as a function of the variation in electrical power output from the frequency converter to meet { TAIL ~ the demand } of { HEAD ~ an external electrical load }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD