EP 1163531 A1 20011219 - 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
Application
Priority
- DE 19908549 A 19990227
- DE 19908547 A 19990227
- DE 19939979 A 19990824
- EP 0001380 W 20000219
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
IPC 8 full level
B60T 8/172 (2006.01); B60T 8/175 (2006.01); F02D 29/02 (2006.01); F02D 45/00 (2006.01); G01P 3/56 (2006.01); G01P 7/00 (2006.01); G01P 21/02 (2006.01)
CPC (source: EP)
B60T 8/172 (2013.01); G01P 7/00 (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
DOCDB simple family (publication)
WO 0052481 A1 20000908; EP 1163531 A1 20011219; JP 2003526038 A 20030902
DOCDB simple family (application)
EP 0001380 W 20000219; EP 00907586 A 20000219; JP 2000602642 A 20000219