Energy reserve accumulator`s e.g. metal bellows hydraulic accumulator, state controlling method for e.g. airplane, involves determining duration to pass from one preset pressure to another, and comparing duration with reference time

摘要

The method involves pressurizing a fluid system which is connected to an energy reserve accumulator. A fluid is maintained at an operating pressure (Pf) for a period (tau ) in order to ensure stabilization of the fluid system. The pressurization of the fluid system is stopped. A duration (delta t) set by the fluid system is determined to pass from a preset pressure (P1) to a preset pressure (P2), where the pressure (P2) is less than the pressure (P1) which is less than the pressure (Pf). The duration (delta t) is compared with a preset reference time (Tref). Independent claims are also included for the following: (1) a device for the implementation of an energy reserve accumulator`s state controlling method (2) an aircraft comprising an energy reserve accumulator and a device for the implementation of an energy reserve accumulator`s state controlling method.