Patent ID: 8196385

Claim:
A turbomachine comprising: a hydraulic main circuit for lubricating oil; and a control system including a hydraulic auxiliary circuit with at least one hydraulic actuator and at least one servo-valve, wherein said hydraulic auxiliary circuit is connected in parallel on the hydraulic main circuit, a liquid flowing in the hydraulic auxiliary circuit then being the lubricating oil from the hydraulic main circuit, and wherein said hydraulic auxiliary circuit includes an auxiliary hydraulic pump powering said hydraulic actuator via said at least one servo-valve, said auxiliary pump being driven by an electric motor, wherein the hydraulic main circuit includes a main pump and a subsidiary pump, wherein the auxiliary hydraulic pump has an inlet connection connected to the hydraulic main circuit downstream from the main pump and between the main pump and the subsidiary pump, and wherein the at least one servo-valve is connected to the hydraulic main circuit upstream from said subsidiary pump.