20130204462 | METHOD FOR CONTROLLED AND SAFE POWERING DOWN OF AUTONOMOUS POWER UNIT SYSTEMS USING A SUB-HERTZ PULSE-GATING TECHNIQUE - A method for powering down a autonomous power unit includes a spark ignition engine power source having an associated power source actuating system and a power output, comprises a regulator associated with the power source. The regulator comprises a deactivator actuatingly linked to the power source actuating system and having a base and secondary configurations wherein the base configuration allows the rated power output by the power source and the secondary configurations allow a progressively reduced secondary rate of power output by the power source and wherein the secondary rates are less than the base rate. The apparatus further comprises a controller remote from the regulator, for transmitting a control signal to the regulator. The deactivator is actuable in response to the control signal to activate either the base rate configuration or one of the secondary configurations to control thereby regulating the power source. | 08-08-2013 |