Global Patent Index - EP 0952332 A3

EP 0952332 A3 2000-07-19 - Method for detecting leaks in fuel supply systems of a vehicle

Title (en)

Method for detecting leaks in fuel supply systems of a vehicle

Title (de)

Verfahren zur Bestimmung von Leckagen im Kraftstoffversorgungssystem eines Kraftfahrzeuges

Title (fr)

Procédé pour détecter des fuites dans les systèmes d'admission de carburant pour un véhicule

Publication

EP 0952332 A3 (DE)

Application

EP 99107539 A

Priority

DE 19818697 A

Abstract (en)

[origin: EP0952332A2] The method involves detecting engine shut-off conditions by evaluating engine operating parameters, opening the tank vent valve or a separate blocking valve mounted in the vent line and closing a valve in a line between an adsorption container and the atmosphere. Depending on the detected conditions, the engine off conditions are detected by evaluating the operating parameters. The tank vent valve or separate valve are closed depending on the detected engine off conditions and the differential pressure changes are evaluated to determine the magnitude of leaks with the engine off, whereby the diagnostic results are stored. An Independent claim is also included for and arrangement for detecting leaks in motor vehicle fuel supply systems.

IPC 1-7 (main, further and additional classification)

F02M 25/08

IPC 8 full level (invention and additional information)

F02B 77/08 (2006.01); F02D 17/00 (2006.01); F02D 45/00 (2006.01); F02M 25/08 (2006.01); F02M 37/00 (2006.01)

CPC (invention and additional information)

F02M 25/0809 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 0952332 A2 19991027; EP 0952332 A3 20000719; EP 0952332 B1 20060719; DE 19818697 A1 19991028; DE 59913677 D1 20060831; ES 2270548 T3 20070401; JP H11336626 A 19991207