Patent ID: 8004110

Claim:
An on-vehicle power generation controller comprising: a controller for adjusting a generated voltage to a predetermined voltage by controlling turning on and off of a field current so as to control an electric power generating operation of a generator, wherein: at least two other on-vehicle power generation controllers, each having the same structure as the on-vehicle power generation controller, are mounted with respect to a single engine, when respective generators corresponding to the at least two other on-vehicle power generation controllers are operated at the same time, each of second and succeeding on-vehicle power generation controllers controls the electric power generating operation of each of the respective generators based upon a field current on-off control signal output in the on-vehicle power generation controller, and each of the at least two other on-vehicle power generation controllers control their respective field currents to start and stop at substantially same time as the field current of the on-vehicle power generation controller.