Bài giảng Hệ thống phanh ABS – Trường Đại học Sư phạm Kỹ thuật

Diagnosis Technician >> Brake >> ABS, EBD and BA

BOÄ GIAÙO DUÏC VAØ ÑAØO TAÏO TRÖÔØNG ÑAÏI HOÏC SÖ PHAÏM KYÕ THUAÄT

HEÄ THOÁNG PHANH ABS ANTILOCK BRAKE SYSTEM

Diagnosis Technician >> Brake >> ABS, EBD and BA

KHAÙI NIEÄM CHUNG

ÑIEÀU KHIEÅN LYÙ TÖÔÛNG ABS (Anti-lock Brake System)

DUNG SAI TRÖÔÏT ABS

: HEÄ SOÁ BAÙM DOÏC HEÄ SOÁ BAÙM NGANG

Ñöôøng beâ toâng khoâ

C O D M A B O S EÄ H

G N A G N M AÙ B OÁ S EÄ H

Ñöôøng nhöïa öôùt

Ñöôøng beâ toâng öôùt

Nhöïa öôùt Ñöôøng baêng

Ice

Heä soá tröôït (%)

Toác ñoä xe – toác ñoä baùnh xe

Heä soá tröôït =

100 %

Toác ñoä xe

0 20 40 60 80 100

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Diagnosis Technician >> Brake >> ABS, EBD and BA

CAÁU TAÏO CHUNG

General

4.ÑEØN BAÙO ABS

3.CAÛM BIEÁN TOÁC ÑOÄ

6 CAÛM BIEÁN GIAÛM TOÁC

2. BOÄ CHAÁP HAØNH ABS

OÂ TOÂ 4WD

5.ÑEØN BAÙOPHANH

3. CAÛM BIEÁN TOÁC ÑOÄ

1. ABS ECU

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Skid Control ECU

Ñieàu khieån

1. Toång quaùt

Coâng taéc phanh

Coâng taéc baùo möïc daàu phanh

Boä chaáp haønh

Caûm bieán toác ñoä

ABS ECU

Caûm bieán toác ñoä

Ñeøn baùo ABS

Ñeøn baùo phanh

Baøng ñoàng hoà

Giaéc kieåm tra toång

DLC3

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Skid Control ECU

Ñieàu khieån

2. Ñieàu khieån

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Skid Control ECU

Ñieàu khieån

2. Ñieàu khieån

Toác ñoä xe B

Toác ñoä

A Vehicle speed A B

C D

Toác ñoä Speed baùnh xe

Wheel speed

a n g S

+ Möùc ñoä taêng Wheel acceleration toác ñoä baùnh rate xe -

u e i h n í T

Giaûm Giöõ Taêng

Reduction Holding Increase

Wheel cylinder hydraulic pressure Time (sec.)

Aùp suaát daàu xy lanh baùnh xe

Thôøi gian (s)

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Skid Control ECU

Ñieàu khieån

2. Ñieàu khieån

Tröôùc phaûi BA

Tröôùc traùi BA

ON OFF ON OFF

Tröôùc phaûi giaûm

ON OFF

Tröôùc phaûi giöõ

ON OFF Tröôùc traùi giaûm ON OFF

Tröôùc traùi giöõ

ON OFF

ö t n e i ñ n a v g n o h t

Sau phaûi giaûm ON OFF

e H

Sau phaûi giöõ

ON OFF

Sau traùi giöõ

ON OFF

Sau traùi giaûm

ON OFF

Moâ tô

ON OFF Kieåm tra tình traïng ban ñaàu

Baét ñaàu KT

KT van ñieän töø

Keát thuùc KT

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Diagnosis Technician >> Brake >> ABS, EBD and BA

ÑIEÀU KHIEÅN

ECU ñieàu khieån

: Light ON

: Light OFF

ABS

EBD

ECU

MUÏC

ABS ÑEØN BAÙO

ÑEØN BAÙO PHANH

C1272 / 72

Code 72

ON OFF

DLC3

Giaéc kieåm tra toång

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Hoaït ñoäng

Boä chaáp haønh phanh

1. Toång quaùt

Nhìn töø A

Nhìn töø B

Nhìn töø C

Moâ toâ

ECU ñieàu khieån

Boä chaáp haønh phanh

Maët caét ngang nhìn töø A

Van ñieän töø giöõ aùp

Van ñieän töø trôï löïc phanh

Bôm

Bình tích naêng

Van ñieän töø giaûm aùp

Maët caét ngang nhìn töø B

Maët caét ngang nhìn töø C

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Diagnosis Technician >> Brake >> ABS, EBD and BA

BOÄ CHAÁP HAØNH PHANH

HOAÏT ÑOÄNG

caûm bieán aùp suaát

XY LANH CHÍNH BOÄ CHAÁP HAØNH ABS & VSC & TRC & BA

van trôï löïc phanh van trôï löïc phanh

b ô m

ECU ñieàu khieån

Van giöõ Van giöõ Van giöõ Van giöõ

Van giaûm Van giaûm Van giaûm Van giaûm

Tích aùp Tích aùp

Sau phaûi

Sau traùi Tröôùc

Tröôùc traùi

phaûi

Caûm bieán giaûm toác 4WD

Heä thoáng tröôùc phaûi sau traùi

Heä thoáng tröôùc traùi sau phaûi

Caùc caûm bieán

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Diagnosis Technician >> Brake >> ABS, EBD and BA

HOAÏT ÑOÄNG

BOÄ CHAÁP HAØNH PHANH

PHANH BÌNH THÖÔØNG

Xy lanh chính

Pressure sensor

BOÄ CHAÁP HAØNH ABS & VSC & TRC & BA

VAN TRÔÏC LÖÏC PHANH

OFF ECU

Check valve 1 OFF

Port a OFF

VAN GIÖÕ AÙP VAN GIÖÕ AÙP

OFF

Check valve 2 BÔM (OFF) Check valve 3

Port b OFF

VAN GIAÛM AÙP VAN GIAÛM AÙP

tröôùc

Reservoir

Caûm bieán toác ñoä

Reservoir: Tích naêng

Port : cöûa

Check valve: van kieåm tra

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Operation

Brake Actuator

PHANH GAÁP

Giaûm aùp

Brake master cylinder

Pressure sensor

ABS & VSC & TRC & BA brake actuator

Brake assist switching valve OFF

Check valve 1 ON

Skid Control ECU Port a ON

Holding valve Holding valve

OFF

Check valve 2 Pump (ON) Check valve 3

Port b ON

Reduction valve Reduction valve

Port e

Reservoir

Front Rear

Speed sensor Speed sensor

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Operation

Brake Actuator

PHANH GAÁP

Giöõ aùp

Brake master cylinder

Pressure sensor

ABS & VSC & TRC & BA brake actuator

Brake assist switching valve OFF

Check valve 1 ON

Skid Control ECU Port a ON

Holding valve Holding valve

OFF

Check valve 2 Pump (ON) Check valve 3

Port b OFF

Reduction valve Reduction valve

Port e

Reservoir

Front Rear

Speed sensor Speed sensor

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Diagnosis Technician >> Brake >> ABS, EBD and BA

Brake Actuator

Operation

PHANH GAÁP

Taêng aùp

Brake master cylinder

Pressure sensor

ABS & VSC & TRC & BA brake actuator

Brake assist switching valve OFF

Check valve 1 OFF

Skid Control ECU Port a OFF

Holding valve Holding valve

OFF

Check valve 2 Pump (ON) Check valve 3

Port b OFF

Reduction valve Reduction valve

Reservoir

Front Rear

Speed sensor Speed sensor

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Diagnosis Technician >> Brake >> ABS, EBD and BA

HOAÏT ÑOÄNG

Brake Actuator

3. PHÖÔNG PHAÙP KIEÅM TRA

SST

Maùy chaån ñoaùn

SST

Battery

Töø SST (duïng cuï ño) Töø oâ toâ

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Diagnosis Technician >> Brake >> ABS, EBD and BA

CAÙC LOAÏI BOÄ CHAÁP HAØNH PHANH

SÔ ÑOÀ MAÏCH DAÀU

XY LANH CHÍNH

VAN ÑIEÀU KHIEÅN DOØNG

BOÄ CHAÁP HAØNH ABS

PHANH BÌNH THÖÔØNG

Check valve

Pump Check valve

CAÛM BIEÁN TOÁC ÑOÄ

TÍCH NAÊNG

ABS ECU

TRÖÔÙC PHAÛI

TRÖÔÙC TRAÙI

SAU PHAÛI

SAU TRAÙI

VAN 2 VÒ TRÍ

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Diagnosis Technician >> Brake >> ABS, EBD and BA

CAÙC LOAÏI BOÄ CHAÁP HAØNH PHANH

SÔ ÑOÀ MAÏCH DAÀU

1. VAN 2 VÒ TRÍ

Master cylinder

Check valve

Pump Check valve

Speed sensors

Reservoir

ABS ECU

2-position solenoid valve

Front left

Rear right

Rear left

Front right

Flow control valve ABS actuator

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Diagnosis Technician >> Brake >> ABS, EBD and BA

CAÙC LOAÏI BOÄ CHAÁP HAØNH PHANH

SÔ ÑOÀ MAÏCH DAÀU

2. van 2 vò trí + van taêng aùp suaát

Master cylinder

Front main solenoid valve

Check valve

Pump

Rear solenoid valve

Check valve

Reservoir

Speed sensors

Front sub- solenoid valve

ABS ECU

Front left

Rear right

Rear left

Front right

ABS actuator Pressure increase valve

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Diagnosis Technician >> Brake >> ABS, EBD and BA

CAÙC LOAÏI BOÄ CHAÁP HAØNH PHANH

SÔ ÑOÀ MAÏCH DAÀU

3. Van ñieän töø 3 vò trí + van cô khí

3-position solenoid valve

Master cylinder

Check valve

Pump

Check valve

Reservoir

Speed sensors

ABS ECU

Mechanical valve

Front left

Rear right

Rear left

Front right

ABS actuator

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Diagnosis Technician >> Brake >> ABS, EBD and BA

CAÙC LOAÏI BOÄ CHAÁP HAØNH PHANH

SÔ ÑOÀ MAÏCH DAÀU

Master cylinder

4. Van ñieän töø 3 vò trí

3-position solenoid valve

Check valve

Pump

Check valve

Speed sensors

Reservoir

ABS ECU

Deceleration sensors

Front left

Rear right

Rear left

Front right

*Some models only

ABS actuator

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Diagnosis Technician >> Brake >> ABS, EBD and BA

ABS VÔÙI EBD

ÑIEÀU KHIEÅN

SÖÏ PHAÂN PHOÁI LÖÏC PHANH TRÖÔÙC SAU

1. TOÅNG QUAÙT 2. HOAÏT ÑOÄNG

PHAÂN PHOÁI LÖÏC PHANH TRÖÔÙC SAU THEO TAÛI

PHAÂN PHOÁI LÖÏC PHANH LYÙ TÖÔNG KHI ÑAÀY TAÛI

ÑAÀY TAÛI

PP LÖÏC PHANH KHI OÂ TOÂ KHOÂNG TAÛI

KHI OÂ TOÂ CHÍ COÙ VAN P

C Ô Ö R T H N A B H N A H P C Ö L

KHOÂNG TAÛI

LÖÏC PHANH BAÙNH SAU

PHAÂN PHOÁI LÖÏC PHANH TRAÙI PHAÛI KHI QUAY VOØNG

PHANH XE KHI ÑANG QUAY VOØNG

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Diagnosis Technician >> Brake >> ABS, EBD and BA

TRÔÏ LÖÏC PHANH

ÑIEÀU KHIEÅN

1. TOÅNG QUAÙT

SÔ ÑOÀ HEÄ THOÁNG

BOÄ CHAÁP HAØNH PHANH

CAÛM BIEÁN TOÁC ÑOÄ

CAÛM BIEÁN AÙP LÖÏC XL CHÍNH

ÑEØN BAÙO ABS

COÂNG TAÉC PHANH

ECU

COÙ TRÔÏ LÖÏC PHANH LÖÏC PHANH

KHOÂNG TRÔÏ LÖÏC PHANH

THÔØI GIAN (GIAÂY)

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Diagnosis Technician >> Brake >> ABS, EBD and BA

TRÔÏ LÖÏC PHANH

ÑIEÀU KHIEÅN

2. HOAÏT ÑOÄNG

XY LANH CHÍNH

Relief Valve: Van hoài

Pressure sensor

relief Valve 4

BOÄ CHAÁP HAØNH ABS & VSC & TRC & BA LÖÏC TREÂN BAØN ÑAÏP PHANH

Pressure sensor: caûm bieán aùp suaát

Brake assist switching valve ON

Check Valve 1 OFF

Brake assist switching valve: Van trôï löïc phanh

Skid Control ECU OFF

OFF

Check Valve: Van 1 chieàu

Check Valve 2 Bôm (ON) Check Valve 3

Van giöõ aùp Van giöõ aùp

Check Valve 5

Van giaûm aùp Van giaûm aùp

Tích aùp

Tröôùc Sau

Caûm bieán toác ñoä Caûm bieán toác ñoä

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Diagnosis Technician >> Brake >> ABS, EBD and BA

ÑIEÀU KHIEÂN CAÙC RÔ LE

KHI ECU HOÛNG

ECU BAÛNG ÑOÀNG HOÁ

TÖØ AÉC QUY

ABS

TÖØ AÉC QUY

WA Brake

BRL

ÑEØN BAÙO ABS

WA Giaéc noái Rô le ñieàu khieån ABS BOÄ CHAÁP HAØNH ABS Rô le moâ tô Moâ tô bôm

RF SOL

LF SOL RR SOL LR SOL

Rô le van ñieän töù ECU

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