Tài liệu Hệ thống phanh ABS P1 pptx

Construction General1/1 1.Skid Control ECU 6.Deceleration sensor 4.Combination meter Built-in warning light 3.Speed sensor 5.Stop light switch 2.Brake actuator 4WD vehicle 3... 1.Skid Co

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TIỂU LUẬN ĐIỀU KHIỂN TỰ ĐỘNG

HỆ THỐNG PHANH ABS

ANTILOCK BRAKING SYSTEM

KS HUỲNH PHƯỚC SƠN

Tháng 03.2004

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NỘI DUNG:

I ĐẶT VẤN ĐỀ

GIỚI THIỆU VỀ HỆ THỐNG PHANH ABS

LỊCH SỬ PHÁT TRIỂN CỦA HỆ THỐNG PHANH ABS

II NGUYÊN LÝ ĐIỀU KHIỂN

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ABS slip tolerance

: Braking force : Cornering force

Dry concrete

Wet asphalt

Dry concrete Wet

asphalt Ice

Ice

Slip ratio (%)

Slip ratio =

Vehicle speed - Wheel speed Vehicle speed 100 %

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Construction General

(1/1)

1.Skid Control ECU

6.Deceleration sensor

4.Combination meter (Built-in warning light) 3.Speed sensor

5.Stop light switch

2.Brake actuator

4WD vehicle

3 Speed sensor

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1.Skid Control ECU

5.Stop light switch

2.Brake actuator

4WD vehicle

1 Skid Control ECU

3 Speed sensor

Trang 6

(1/1)

1.Skid Control ECU

5.Stop light switch

2.Brake actuator

4WD vehicle

2 Brake actuator

3 Speed sensor

Trang 7

1.Skid Control ECU

5.Stop light switch

2.Brake actuator

4WD vehicle

3 Speed sensor

3 Speed sensor

Trang 8

(1/1)

1.Skid Control ECU

5.Stop light switch

2.Brake actuator

4WD vehicle

4 Combination meter

HINT:

When the Skid Control ECU has Failed

3 Speed sensor

FGFGFGFG

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1.Skid Control ECU

5.Stop light switch

2.Brake actuator

4WD vehicle

5 Stop light switch

3 Speed sensor

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(1/1)

1.Skid Control ECU

5.Stop light switch

2.Brake actuator

4WD vehicle

6 Deceleration

sensor(Some

models only.)

3 Speed sensor

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Brake fluid level warning switch

1 General

Stop light switch

Speed sensors

Brake actuator Skid Control ECU

DLC3

Speed meter ABS warning light Brake system warning light Combination meter

Speed sensors

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Control Skid Control ECU

(2/4)

Speed

2 Control

Vehicle speed

Wheel speed

+

-Wheel acceleration rate

Reduction Holding Increase

Wheel cylinder hydraulic pressure

Time (sec.)

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Speed

Vehicle speed

Wheel speed

+

Time (sec.)

Trang 14

(2/4)

Speed

Vehicle speed

Wheel speed

+

Time (sec.)

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Speed

Vehicle speed

Wheel speed

+

Time (sec.)

Trang 16

(2/4)

Speed

Vehicle speed

Wheel speed

+

Time (sec.)

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Front right BA Front left BA Front right Reduction

ON OFF ON OFF ON OFF Front right Holding ON

OFF Front left ReductionON

OFF Front left Holding ON

OFF Rear right ReductionON

OFF Rear right Holding ON

OFF Rear left ReductionON

OFF Motor ON

OFF Condition before the initial check Check start Solenoid check Check end

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(4/4)

: Light ON Item

: Light OFF

ABS warning light Brake system warning light

ABS EBD BA Skid Control

ECU

DLC3

C1272 / 72 Code 72

ON OFF

TC

DLC3 CG

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View from C

View from A

View from B

Brake actuator

Skid control ECU

Motor

Cross section from A view

Pressure holding solenoid valve

Brake assist switching solenoid valve

Pressure reduction solenoid valve

Cross section from B view

Pump

Reservoir

Cross section from C view

1 General

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Operation Brake Actuator

(2/3)

Brake master cylinder

2 Operation

ABS & VSC & TRC &

BA brake actuator

Pressure sensor

Brake assist switching valve

Holding valve

Reduction valve

Skid Control ECU

Front left wheel or rear right wheel system

Front right wheel or rear left wheel system

Speed sensors

Deceleration sensor (4WD vehicle)

Front left

Reservoir Reservoir

Tiêu đề	Hệ thống phanh ABS
Tác giả	Kỹ Sư Huỳnh Phước Sơn
Trường học	Trường Đại học Sư phạm Kỹ thuật TP.HCM
Chuyên ngành	Diagnosis Technician
Thể loại	Tiểu luận
Năm xuất bản	2004
Thành phố	Ho Chi Minh City

Định dạng
Số trang	20
Dung lượng	1,61 MB