Electronic control system for a diesel engine, generator and electric motor power train

Claim 1

In an electronic control system for a power train comprising a diesel engine driving a generator which supplies electric current to an electric motor, said control system comprising a master controller setting a multiple set point relating to the current and voltage of said generator and to the injection of fuel into the diesel engine and means for comparing said current and voltage set points with actual measured values of the corresponding quantities and supplying output signals representative of the deviations found, the improvement within said control system further comprising: means for applying said deviations and said injection set point to the input of a computer which generates a new set point for diesel engine injection, means for delivering said new set point, to a computer circuit having in store the data of the optimal injection/speed curve for the diesel engine and feeding to the input of a first electronic controller a diesel engine speed set point value, said first controller also receiving a signal representative of the speed measurement of the diesel engine and said system including means for supplying a correcting signal to change the injection of the diesel engine, and further means for delivering said new set point to one input of a second electronic controller, said second electronic controller further including an input for receiving a signal representative of the measured value of the injection flow rate and said second electronic controller outputting a correcting signal to change the value of the generator excitation current.