EP 2464956 A1 20120620 - METHOD FOR EARLY DETECTION OF DAMAGE IN A MOTOR VEHICLE TRANSMISSION
Title (en)
METHOD FOR EARLY DETECTION OF DAMAGE IN A MOTOR VEHICLE TRANSMISSION
Title (de)
VERFAHREN ZUR FRÜHZEITIGEN SCHADENSERKENNUNG IN EINEM KRAFTFAHRZEUGGETRIEBE
Title (fr)
PROCÉDÉ DE DÉTECTION PRÉCOCE DE DOMMAGES DANS UNE TRANSMISSION DE VÉHICULE AUTOMOBILE
Publication
Application
Priority
- DE 102009028364 A 20090810
- EP 2010060100 W 20100714
Abstract (en)
[origin: WO2011018289A1] The invention relates to a method for the early detection of damage in a motor vehicle transmission, comprising at least one acceleration sensor, by means of which mechanical vibrations in the motor vehicle transmission are captured (S1) and converted into an electrical signal (a(t)) (S2), wherein the electrical signal (a(t)) is then digitalized (S3) and a comparison to a comparison parameter (aG) is then performed (S4), wherein the capturing of the mechanical vibrations is further performed at defined operating points of the motor vehicle transmission and acceleration amplitudes over a time curve (t) are determined from the digitalized electrical signal (a(t)), wherein states (Z(t)) are counted at which the acceleration amplitudes exceed the comparison parameter (aG), and wherein a calculated probability (P(t)) for damage to the motor vehicle transmission is determined (S5) using a number of the states (Z(t)). The invention further relates to a motor vehicle transmission, the damage thereof being able to be determined by means of the above method, and to a computer program product for performing the individual process steps.
IPC 8 full level
G01M 13/02 (2006.01); G01H 1/00 (2006.01)
CPC (source: EP US)
G01H 1/003 (2013.01 - EP US); G01M 13/021 (2013.01 - EP US); G01M 13/028 (2013.01 - EP US)
Citation (search report)
See references of WO 2011018289A1
Designated contracting state (EPC)
AL 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)
DE 102009028364 A1 20110217; CN 102472684 A 20120523; EP 2464956 A1 20120620; JP 2013501927 A 20130117; US 2012130607 A1 20120524; WO 2011018289 A1 20110217
DOCDB simple family (application)
DE 102009028364 A 20090810; CN 201080035571 A 20100714; EP 10734101 A 20100714; EP 2010060100 W 20100714; JP 2012524172 A 20100714; US 201013387837 A 20100714