Patent AU-2011211439-B2 (AU)
Title: Fluid-working machine and method of operating a fluid-working machine
Inventor: RAMPEN WILLIAM HUGH SALVIN
IPC: F04B49/00
Filed: 2011-02-23
Granted: 2013-09-12
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date H(10) International Publication Number 1 September 2011 (01.09.2011) PCT W O 2011/104548 A2 (51) International Patent Classification: (GB). CAMPBELL, John Tearlach [GB/GB]; 10/5 F04B 7/00 (2006.01) F04B 53/10 (2006.01) Teviot Place, Edinburgh EHI 2QZ (GB). F04B 49/06 (2006.01) (74) Agent: HINDLE, Alistair Andrew; Hindle Lowther, 66 (21) International Application Number: Hanover Street, Edinburgh EH2 1EL (GB). PCT/GB2Ol 1/050359 (81) Designated States (unless otherwise indicated, for every (22) International Filing Date: kind of national protection available): AE, AG, AL, AM, 23 February 2011 (23.02.2011) AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, (25) Filing Language: English DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, (26) Publication Language: English HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, (30) Priority Data: ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, 1002999.9 23 February 2010 (23.02.2010) GB NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, 1003005.4 23 February 2010 (23.02.2010) GB SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, (71) Applicant (for all designated States except US): TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. ARTEMIS INTELLIGENT POWER LIMITED [GB/ (84) Designated States (unless otherwise indicated, for every GB]; Unit 3, Edgefield Industrial Estate, Edgefield Road, kind of regional protection available): ARIPO (BW, GH, Loanhead Midlothian EH20 9TB (GB). GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, (72) Inventors; and ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, (75) Inventors/Applicants (for US only): RAMPEN, William TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Hugh Salvin [GB/GB]; 1 Merchiston Crescent, Edin- EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, burgh EH1O 5AN (GB). CALDWELL, Niall James LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, [GB/GB]; 21 Brunstane Road South, Edinburgh EH15 SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, 2NH (GB). FIELDING, Michael Richard [GB/GB]; 3 GW, ML, MR, NE, SN, TD, TG). Union Road, Linlithgow EH49 7DY (GB). LAIRD, Stephen Michael [GB/GB]; 4F2 25 Montpelier, Edin burgh EH1O 4LY (GB). STEIN, Uwe Bernhard Pascal [DE/GB]; 19 Hope Lane North, Edinburgh EH15 2PT [Continued on next page] (54) Title: FLUID-WORKING MACHINE AND METHOD OF OPERATING A FLUID-WORKING MACHINE 330 328 332 324 334 140 - 2.5 120 - 2 80 j 1.5 40 -- - - 312 - 0 360 720 1080 314 318 320 326 Fig 8 kf) (57) Abstract: Disclosed is a method of detecting a fault in a fluid-working machine comprising a plurality of working chambers of cyclically varying volume, each said working chamber operable to displace a volume of working fluid which is selectable for each cycle of working chamber volume to carry out a working function responsive to a received demand signal. An output param eter of the fluid working machine, which is responsive to the displacement of working fluid by one or more of the working cham bers to carry out the working function, is measured. It is determined whether the measured output parameter fulfils at least one ac ceptable function criterion, taking into account the previously selected net displacement of working fluid by a working chamber f4 during a cycle of working chamber volume to carry out the working function. By taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working func tion, an unacceptable fault in a fluid-working machine may be detected if it causes one or more measured output parameter to re spond in a way which would not be expected if the fluid working machine was functioning acceptably. W O 2 0 1 1/10 4 5 4 8 A 2 IIl ||l|lllll l| |||I||||I|||||I||||||||||||||V|V||||I|I|||V||I||||||||||||||||I| Published: - without international search report and to be republished upon receipt of that report (Rule 48.2(g))