Device and method for controlling the state of an energy...

Data processing: measuring – calibrating – or testing – Measurement system – Time duration or rate

Reexamination Certificate

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Details

C702S138000, C303S122120, C180S165000

Reexamination Certificate

active

11491772

ABSTRACT:
The invention concerns a device and method for checking the state of an accumulator with energy reserve that is connected to a fluid system. According to the invention, the fluid system is first of all pressurized and this fluid is maintained at an operating pressure PFfor at least a time τ so as to ensure the stabilization of this fluid system. Then the pressurisation of the fluid system is stopped and the time Δt taken by the system to pass from a predetermined pressure P1to a predetermined pressure P2, with P2<P1<PF, is determined. This period Δt is compared with a predetermined reference time Tref.

REFERENCES:
patent: 5221125 (1993-06-01), Okochi et al.
patent: 5950757 (1999-09-01), Saita et al.
patent: 6132012 (2000-10-01), Ishii
patent: 6192299 (2001-02-01), Kubota et al.
patent: 2002/0035832 (2002-03-01), Nakamura et al.
patent: 2002/0162381 (2002-11-01), Suzuki et al.
patent: 2 815 089 (2002-04-01), None

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