
ABS/ESP SYSTEM
KYRON SM - 2005.09
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
66
4890
5. ABS CIRCUIT IN EACH OPERATION RANGE
Hydraulic Pressure Circuit when ABS is Not Operating
The hydraulic pressure in the master cylinder increases
through the vacuum booster and it is delivered to the wheel
via the normal open inlet valve. At this moment, the nor-
mally-closed outlet valve is closed. The speed of the wheel
that hydraulic pressure is delivered reduces gradually.
1
2
4
No Hydraulic Pressure Circuit when ABS is Operating
As hydraulic pressure on each wheel increases, the wheel
tends to lock. In order to prevent the wheel from locking, the
hydraulic valve modulator operates the inlet valve control
solenoid to close the inlet valve and stop the hydraulic pres-
sure increases. At this moment, the outlet valve is closed.
This procedure helps the wheel to maintain a stable hy-
draulic pressure.
Pressure Decreases in the Circuit when ABS is Operating
Even when the hydraulic pressure on each circuit is stable,
the wheel can be locked as the wheel speed decreases.
This is when the ABS ECU detects the wheel speed and
the vehicle speed and gives the optimized braking without
locking the wheels. In order to prevent from hydraulic pres-
sure increases, the inlet valve is closed and the outlet valve
is opened. Also, the oil is sent to the low pressure cham-
ber and the wheel speed increases again. The ABS ECU
operates the pump to circulate the oil in the low pressure
chamber to the master cylinder. This may make the driver
to feel the brake pedal vibration and some noises.
Pressure Increases in the Circuit when ABS is Operating
As the wheel speed increases, the inlet valve opens and
the wheel’s pressure increases due to the master cylinder
pressure. The oil in the low pressure chamber circulates
to the wheel by the pump and the wheel speed decreases
as the hydraulic pressure at wheel increases. This opera-
tion continues repetitively until there are no signs that the
ABS ECU is locking the wheels. When the ABS hydraulic
pressure control takes place, there may be some vibration
and noises at the brake pedal.
3
Pump
Inlet valve
Outlet valve
Low pressure
chamber
Outlet valve
Pump
Inlet valve
Low pressure
chamber
Outlet valve
Inlet valve
Pump
Low pressure
chamber
Outlet valve
Inlet valve
Pump
Low
pressure
chamber
Содержание KYRON 2006
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Страница 322: ...SUSPENSION KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 18 4510 MEMO ...
Страница 328: ...SUSPENSION KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 24 4510 Installation Drawing Front View Rear View ...
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Страница 476: ...AIR BAG SYSTEM KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 16 8810 5 ELECTRICAL WIRING DIAGRAM ...
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Страница 634: ...RKSTICS REKES STICS STICS KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 50 8710 Central Door Lock Circuit ...
Страница 638: ...RKSTICS REKES STICS STICS KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 54 8710 FRT Wiper Washer RR Washer ...
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Страница 738: ...SWITCHES ELECTRICDEVICES KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 44 8510 Sunroof Switch ...
Страница 774: ...SWITCHES ELECTRICDEVICES KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 80 8510 ...
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Страница 890: ...PARKING AID SYSTEM KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 12 8790 7 CIRCUIT DIAGRAM ...
Страница 906: ...ELECTRIC SYSTEM KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 16 8000 Designation and Capacity Driver Side ...
Страница 910: ...ELECTRIC SYSTEM KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 20 8000 9 ELECTRICAL WIRING DIAGRAMS ...
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Страница 1063: ...4 BODYREPAIR KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 5110 2 JACK UP POINTS IRS Lifting Point Dotted Circles ...
Страница 1071: ...12 BODYREPAIR KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 5110 Frame Dimensions 5 Link Suspension Frame Unit mm ...
Страница 1072: ...CHANGED BY EFFECTIVE DATE AFFECTED VIN BODYREPAIR KYRON SM 2005 09 13 5110 I N T E X T R E P A I R Unit mm ...
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Страница 1075: ...16 BODYREPAIR KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 5110 IRS Suspension Frame Unit mm ...
Страница 1076: ...CHANGED BY EFFECTIVE DATE AFFECTED VIN BODYREPAIR KYRON SM 2005 09 17 5110 I N T E X T R E P A I R Unit mm ...
Страница 1077: ...18 BODYREPAIR KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 5110 Unit mm Sectional Drawing ...
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Страница 1081: ...22 BODYREPAIR KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 5110 Body Dimensions Side Structure Complete Unit mm ...
Страница 1082: ...CHANGED BY EFFECTIVE DATE AFFECTED VIN BODYREPAIR KYRON SM 2005 09 23 5110 I N T E X T R E P A I R Engine Compartment Unit mm ...
Страница 1083: ...24 BODYREPAIR KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 5110 Unit mm Front End ...
Страница 1085: ...26 BODYREPAIR KYRON SM 2005 09 CHANGED BY EFFECTIVE DATE AFFECTED VIN 5110 Tailgate Unit mm ...