Global Patent Index - EP 1257738 A1

EP 1257738 A1 2002-11-20 - DEVICE AND METHOD FOR MONITORING A TANK VENTILATION SYSTEM

Title (en)

DEVICE AND METHOD FOR MONITORING A TANK VENTILATION SYSTEM

Title (de)

VORRICHTUNG UND VERFAHREN ZUR ÜBERPRÜFUNG EINES TANKENTLÜFTUNGSSYSTEMS

Title (fr)

DISPOSITIF ET PROCEDE PERMETTANT DE CONTROLER UN SYSTEME DE DEGAZAGE DE RESERVOIR

Publication

EP 1257738 A1 (DE)

Application

EP 01905711 A

Priority

  • DE 10008189 A
  • EP 0100981 W

Abstract (en)

[origin: WO0163117A1] The invention relates to a device and method for monitoring a tank ventilation system on a motor vehicle, with a tank ventilation valve (7), comprising an engine speed sensor (10), an air flow sensor (12) and/or an idle controller (13) to provide an air flow signal and an analytical unit (14), which compares the change in engine speed and air flow on opening and closing the ventilation valve, with at least one threshold value (16). According to the invention, the monitoring of the tank ventilation system may be improved, whereby the analytical unit is arranged, such that a combined reaction value is generated from the engine speed, with closed and opened tank ventilation valve and the air flow, with closed and opened tank ventilation valve and which is to be compared with a threshold value.

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

F02M 25/08

IPC 8 full level (invention and additional information)

G01M 99/00 (2011.01); F02M 25/08 (2006.01)

CPC (invention and additional information)

F02M 25/0809 (2013.01)

Citation (search report)

See references of WO 0163117A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 0163117 A1 20010830; DE 10008189 A1 20011018; DE 10008189 C2 20020214; DE 50109812 D1 20060622; EP 1257738 A1 20021120; EP 1257738 B1 20060517; US 2003140685 A1 20030731; US 7017402 B2 20060328

INPADOC legal status


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