Patent ID: 8500583
Filing Date: 2013-08-06
Classification: F02C,F02D,F02N,Y02T

Abstract:
1. A starter generator for use with an engine, the engine having a compressor for compressing air, a combustor for combusting fuel with the air compressed by the compressor, first and second turbines adapted to be rotated by impingements of compressed combustion gases from the combustor, a first rotating shaft drivingly connected with the compressor and the first turbine so that it rotates with the compressor and the first turbine, and a second rotating shaft drivingly connected with the second turbine so that it rotates with the second turbine, comprising: an electric rotating machine having a rotating shaft, the rotating machine being designed to carry on two reverse operations—motor and generator; a first clutch connected between the rotating machine and the first rotating shaft for transmitting rotations of the rotating machine to the first rotating shaft; a second clutch connected between the rotating machine and the second rotating shaft for transmitting rotations of the second rotating shaft to the rotating machine; a continuously variable transmission for changing the number of rotations transmitted from the second rotating shaft to the rotating machine; and a control designed to carry out a first mode in which the rotating machine is supplied with electric power to rotate the rotating shaft and thereby rotations of the rotating shaft are transmitted through the first clutch to the first rotating shaft and a second mode in which, following the first mode, the number of rotations of the rotating shaft of the rotating machine is kept constant by controlling a transmission ratio of the continuously variable transmission.