NUM FICHE 005

057

CODE DOC 025

REDACTEUR 030

SIMAL Isabelle

ORGANISME 035

ISTI

DATE RED 040

9202

DOM GEN 060

industrie automobile|

DOM SPEC 065

suspension du véhicule automobile|

ENT AN 105

lateral acceleration

IN ENT AN 110

E; abcdefg

DEF AN 115

Component of the vehicle acceleration in the direction of the Y-axis ((imaginary transverse axis)). |f|

CONT AN 120

The lateral acceleration is a measure of the forces acting transversely on the car, i.e. how it moves sideways. The driver detects this by the side pressure applied by the seat to his back. |c| The reduction achieved in the roll angle (difference in left-right wheel travel) when making quick steering operation is shown in Fig. 17. The change in the roll angle is suppressed by predicting the lateral acceleration (G) from the vehicle speed and steering speed and increasing the damping force accordingly. |b| ((...)) the side pull force required for rollover can be expressed as an equivalent lateral acceleration in g units (acceleration due to gravity) when divided by the vehicle weight. |d|

NOTE AN 125

Standard : ISO 8855, 1991 in 115, also SAE J670, SAE J1451

SYN AN 130

1- transverse acceleration |E; h|

: 131

CONT 1: Transverse acceleration to control rate of roll angle and roll couple distribution during cornering and handling transient manoeuvers - steering angle in conjunction with forward speed would provide similar control information. |h|

AB AN 140

1- aY |E; f|

ENT FR 205

accélération transversale

IN ENT FR 210

n f; F; fh

DEF FR 215

Projection de l'accélération du véhicule sur l'axe Y ((axe transversal imaginaire)). |f|

CONT FR 220

NOTE FR 225

Norme ISO 8855, 1991 en 215.

SYN FR 230

1- accélération latérale |n f; F; i|

: 231

CONT 1: A partir de ce signal, le module détermine l'angle de braquage et le compare à la vitesse pour calculer l'accélération latérale. La suspension reste en mode de réaction douce lors de virages moyens, et passe automatiquement en mode de réaction ferme lorsque l'accélération latérale dépasse 0,3 g. |i|

AB FR 240

1- aY |f|

SOURCES 295

SOURCE ANNEE VOLUME NUMERO MOIS PAGE MENTION

a SEWA-E 1991 76

b SAET-G 1985 10

c SAAB 1-G 1990 33

d VEDY-E 1991 29

e FORD 26-G 1990 18

f ISOR-N 1991 2

g MVSE-C 1989 156

h MONR 4-G sd 6

i FORD 25-G 1991 18

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© Isabelle Simal, 1993.