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1. (WO1998049439) METHOD AND DEVICE FOR LEAKAGE TESTING IN A TANK SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049439 International Application No.: PCT/SE1998/000799
Publication Date: 05.11.1998 International Filing Date: 30.04.1998
Chapter 2 Demand Filed: 19.10.1998
IPC:
F02M 25/08 (2006.01) ,G01M 3/02 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25
Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel, or fuel-air mixture
08
adding fuel vapours drawn from engine fuel reservoir
G PHYSICS
01
MEASURING; TESTING
M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3
Investigating fluid tightness of structures
02
by using fluid or vacuum
Applicants:
VOLVO PERSONVAGNAR AB [SE/SE]; S-405 08 Göteborg, SE (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, JP, LU, MC, NL, PT, SE)
MÜLLER, Jan [SE/SE]; SE (UsOnly)
ÅLLEVING, Peter [SE/SE]; SE (UsOnly)
Inventors:
MÜLLER, Jan; SE
ÅLLEVING, Peter; SE
Agent:
GRAUDUMS, Valdis ; Albihns Patentbyrå Göteborg AB P.O. Box 142 S-401 22 Göteborg, SE
Priority Data:
9701667-930.04.1997SE
Title (EN) METHOD AND DEVICE FOR LEAKAGE TESTING IN A TANK SYSTEM
(FR) PROCEDE ET DISPOSITIF SERVANT A CONTROLER LES FUITES DANS UN RESERVOIR
Abstract:
(EN) A method and a device for leakage testing in a tank system (100), comprising the sealing of the tank system (100), creating a pressure which deviates from the ambient atmosphere pressure in the tank system (100), and, at intervals in time ($g(D)T), during a measuring period T, measuring values (P1-PN) of the pressure in the tank system (100), and letting the curve-shape of the curve (K) which is formed by the measured pressure values (P1-PN) be compared to a predefined curve-shape, and in case of deviation over a certain predefined limit indicate a circumstance due to which the leakage test in the tank system (100) should not be accepted.
(FR) Procédé et dispositif servant à contrôler les fuites dans un réservoir (100), ce qui consiste à fermer hermétiquement ce réservoir (100), à créer une pression déviant de la pression atmosphérique ambiante dans ce réservoir (100) et, à des intervalles temporels ($g(D)T), pendant une période de mesure T, à mesurer des valeurs (P1-PN) de la pression dans le réservoir (100), puis à comparer la forme de la courbe (K) obtenue au moyen de la mesure des valeurs de pression (P1-PN) à une forme de courbe prédéfinie, ce qui indique, dans le cas d'une déviation supérieure à une certaine limite prédéterminée, une circonstance signifiant la présence de fuites dans le réservoir (100).
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Designated States: JP, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
US6374663