Kia 2004.5 Spectra Service Technical Training page 181

2004.5 Spectra Technology
ELECTRONIC
BRAKE-FORCE
DISTRIBUTION (EBD)
Brakes
The Electronic Brake-Force Distribution (EBD) system is
a sub-system of the ABS. EBD is designed to control
rear wheel traction and is included when the ABS option
is added to the Spectra. EBD software uses the ABS to
control rear wheel slip in the partial braking range.
Braking force is controlled electronically, removing the
need for the mechanical proportioning valve.
Comparing the proportioning valve distribution to the
EBD distribution, the mechanical proportioning valve
has limitations. The proportionate valve tries to
achieve an ideal brake force distribution to the rear
wheels as well as to carry out the flexible brake force
distribution proportionate to the vehicle load. EBD
calculates the slip ratio of each wheel at all times and
controls the brake pressure of the rear wheels through
the ABS so as not to exceed that of the front wheels.
N N o o t t e e : : I I f f t t h h e e E E B B D D f f a a i i l l s s , , t t h h e e d d r r i i v v e e r r m m a a y y n n o o t t n n o o t t i i c c e e
a a n n y y c c h h a a n n g g e e . . T T h h e e E E B B D D w w a a r r n n i i n n g g l l a a m m p p ( ( t t h h e e p p a a r r k k i i n n g g
b b r r a a k k e e l l a a m m p p ) ) w w i i l l l l i i l l l l u u m m i i n n a a t t e e . .
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