EP 2333290 A1 20110615 - Method and system to detect a leak in a vehicle fuel tank
Title (en)
Method and system to detect a leak in a vehicle fuel tank
Title (de)
Verfahren und System zur Erkennung eines Lecks bei einem Fahrzeugtank
Title (fr)
Procédé et système pour détecter une fuite dans un réservoir de carburant de véhicule
Publication
Application
Priority
EP 09179024 A 20091214
Abstract (en)
The present invention relates a method and system (1) to detect a leak in a vehicle fuel tank (2). It comprises performing the following steps as well as means for performing these steps. Closing a valve (3) sealing the fuel tank (2) from ambient air (9) upon shut off of an engine of the vehicle. Measuring (4) and logging (5, 6) the pressure in the fuel tank (2) over time to obtain a pressure curve. Analyzing the shape of the pressure curve over time from a first predetermined time t 1 after closing of the valve (3) to a second predetermined time t 2 . Separating a leaking and a non-leaking fuel tank (2) based on the result of said analysis.
IPC 8 full level
F02M 25/08 (2006.01); F02D 41/04 (2006.01)
CPC (source: EP)
F02M 25/0827 (2013.01); F02M 37/0082 (2013.01); F02D 41/042 (2013.01); F02D 2041/1423 (2013.01); F02D 2041/224 (2013.01); F02D 2041/225 (2013.01); F02D 2200/0602 (2013.01)
Citation (search report)
- [XA] US 2005262932 A1 20051201 - HAYASHI TAKANE [JP], et al
- [IDA] US 6374663 B1 20020423 - MUELLER JAN [SE], et al
- [XA] US 2005028792 A1 20050210 - HOSOYA HAJIME [JP], et al
- [A] US 2004226347 A1 20041118 - MC LAIN KURT D [US], et al
- [A] US 2009199627 A1 20090813 - BOSSEMEYER HANS GOERG [DE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 09179024 A 20091214