Patent ID: 7430492

Claim:
A method of checking a state of an accumulator with energy reserve that is connected to a fluid system, the method comprising; pressurizing the fluid system to an operating pressure P F ; maintaining the fluid system at the operating pressure P F for at least a period of time τ to ensure a stabilization of the fluid system; stopping the pressurisation of the fluid system after an expiration of the at least time period τ; detecting that a pressure value of the fluid system falls from the operating pressure P F to a predetermined pressure value P 1 ; initiating a checking process to determine a time Δt taken by the system to change from the detected predetermined pressure P 1 to a predetermined pressure P 2 , wherein P 2 <P 1 <P F ; comparing the time Δt with a predetermined reference time T ref wherein the state of the accumulator is determined by a result of the comparison of time Δt with predetermined reference time T ref .