Patent ID: 7690185
Filing Date: 2010-04-06
Classification: F02C,F04D

Abstract:
1. A system for driving first and second accessory machines of a double-bodied turbine engine with a shaft of the low pressure LP rotor and a shaft of the high pressure HP rotor, comprising: a first power train disposed between the shaft of the HP rotor and the first accessory machines, which mechanically drives the first accessory machines; a first coupling means disposed between the shaft of the LP rotor and a second power train; the second power train disposed between the first coupling means and the second accessory machines, which drives the second machines; a second coupling means disposed between the first power train and the second power train which allows the second accessory machines to be driven by the shaft of the HP rotor when the engine operates at high speeds; and control means configured to selectively couple the first coupling means and the second coupling means based on speed signals of the shaft of the LP rotor and the shaft of the HP rotor, wherein the second accessory machines are driven by the shaft of the LP rotor when the first coupling means is coupled.