Global Patent Index - EP 1163531 A1

EP 1163531 A1 2001-12-19 - METHOD AND DEVICE FOR DETERMINING THE VEHICLE REFERENCE SPEED AND FOR DETECTING AN INCORRECT VEHICLE REFERENCE SPEED OF AN ALL-WHEEL-DRIVE VEHICLE

Title (en)

METHOD AND DEVICE FOR DETERMINING THE VEHICLE REFERENCE SPEED AND FOR DETECTING AN INCORRECT VEHICLE REFERENCE SPEED OF AN ALL-WHEEL-DRIVE VEHICLE

Title (de)

VERFAHREN UND VORRICHTUNG ZUR ERMITTLUNG DER FAHRZEUGREFERENZGESCHWINDIGKEIT UND ZUR ERKENNUNG EINER UNRICHTIGEN FAHRZEUGREFERENZGESCHWINDIGKEIT EINES ALLRADGETRIEBENEN FAHRZEUGS

Title (fr)

PROCEDE ET DISPOSITIF DE DETERMINATION DE LA VITESSE DE REFERENCE D'UN VEHICULE ET DE DETECTION D'UNE VITESSE DE REFERENCE INAPPROPRIEE D'UN VEHICULE TOUTES ROUES MOTRICES

Publication

EP 1163531 A1 (DE)

Application

EP 00907586 A

Priority

  • DE 19908549 A
  • DE 19908547 A
  • DE 19939979 A
  • EP 0001380 W

Abstract (en)

[origin: WO0052481A1] The invention relates to a method and a device for determining the vehicle reference speed and for detecting an incorrect vehicle reference speed of an all-wheel-drive vehicle. The vehicle reference speed is determined on the basis of one or more wheel speeds. The inventive method comprises the following steps: determining a vehicle acceleration from the vehicle reference speed and/or from one or more wheel speeds, determining a driving torque and/or measuring the vehicle acceleration with a sensor, comparing the determined vehicle acceleration and the driving torque and/or the measured vehicle acceleration, and modifying the vehicle reference speed on the basis of said comparison. The invention also relates to a method for detecting an incorrect vehicle reference speed of an all-wheel-drive vehicle according to which the vehicle reference speed is determined on the basis of one or more wheel speeds and/or extrapolated from given values, and one or more wheels are decoupled from the drive. The method of detection is based on the running behavior of the decoupled wheel(s).

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

G01P 21/02; B60T 8/00

IPC 8 full level (invention and additional information)

G01P 3/56 (2006.01); B60T 8/172 (2006.01); B60T 8/175 (2006.01); F02D 29/02 (2006.01); F02D 45/00 (2006.01); G01P 7/00 (2006.01); G01P 21/02 (2006.01)

CPC (invention and additional information)

G01P 7/00 (2013.01); B60T 8/172 (2013.01); G01P 21/02 (2013.01); B60T 2250/04 (2013.01)

Citation (search report)

See references of WO 0052481A1

Designated contracting state (EPC)

DE FR

EPO simple patent family

WO 0052481 A1 20000908; EP 1163531 A1 20011219; JP 2003526038 A 20030902

INPADOC legal status


2004-11-10 [18W] APPLICATION WITHDRAWN

- Effective date: 20040917

2004-10-13 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040825

2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): DE FR

2001-12-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010927

2001-12-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE