Presentation is loading. Please wait.

Presentation is loading. Please wait.

Electronic Braking and Aid to Vehicle StabilityBradford University1 GRRF Ad-Hoc Working Group Electronic Vehicle Stability Control “Trailers” 25 – 26 November.

Published byJane Maxwell Modified over 8 years ago

Similar presentations

Presentation on theme: "Electronic Braking and Aid to Vehicle StabilityBradford University1 GRRF Ad-Hoc Working Group Electronic Vehicle Stability Control “Trailers” 25 – 26 November."— Presentation transcript:

1 Electronic Braking and Aid to Vehicle StabilityBradford University1 GRRF Ad-Hoc Working Group Electronic Vehicle Stability Control “Trailers” 25 – 26 November 2004 Document No. EVSC04-05

2 Electronic Braking and Aid to Vehicle StabilityBradford University2 T railer I nduced R oll O ver

3 Electronic Braking and Aid to Vehicle StabilityBradford University3 Number of Roll Over Accidents UK Roll Over Statistics - Heavy Commercial Vehicles Rigids Articulated 199419951996199719981999200020012002 0 100 200 300 400 500 600 700

4 Electronic Braking and Aid to Vehicle StabilityBradford University4 Causes of Roll-Over: Driver misjudgement of speed & road conditions

5 Electronic Braking and Aid to Vehicle StabilityBradford University5 Causes of Roll-Over: Collision avoidance

6 Electronic Braking and Aid to Vehicle StabilityBradford University6 Considerations: It is NOT possible to prevent ALL roll overs Vehicle is “Tripped” Many roll overs are the result of loss of concentration and minor misjudgement of road conditions Excessive over speed

7 Electronic Braking and Aid to Vehicle StabilityBradford University7 Position of load Centre of gravity Effective track Vehicle speed Primary Roll Over Factors: Primary Roll Over Factors: Radius of turn

8 Electronic Braking and Aid to Vehicle StabilityBradford University8 Road camber Roll stiffness Torsional chassis stiffness Load shift Secondary Roll Over Factors: Secondary Roll Over Factors: Fifth wheel coupling Tyre Pressure

9 Electronic Braking and Aid to Vehicle StabilityBradford University9 Trailer ABS & EBS Functionality:

10 Electronic Braking and Aid to Vehicle StabilityBradford University10 Conventional Semi-Trailer Anti-Lock Braking System ECU ISO 7638 (5 Pin) 2S/2M or 4S/2M Independent Control

11 Electronic Braking and Aid to Vehicle StabilityBradford University11 Semi-Trailer Electronic Braking System ISO 7638 (7 Pin) 42 ECU 1-2 23 24 22 21 11 41 2S/2M or 4S/2M Independent Control

12 Electronic Braking and Aid to Vehicle StabilityBradford University12 Wheel speed signals Driver demand - pneumatic Brake chamber Delivery pressure Reservoir pressure Axle load / bogie load ParameterTrailer ABSTrailer EBS Control Input Variables: X Driver demand - CANXX X X X X

13 Electronic Braking and Aid to Vehicle StabilityBradford University13 Anti-Lock control Load sensing Auxiliary Outputs Auxiliary inputs Automatic brake applications FunctionTrailer ABSTrailer EBS Functionality: Data communicationsXx x XX X X X X

14 Electronic Braking and Aid to Vehicle StabilityBradford University14 Roll Stability Function

15 Electronic Braking and Aid to Vehicle StabilityBradford University15 Objective:Objective: Reduce the Incidence of Trailer Induced Roll-Over Lateral Acceleration Sensor Roll Stability Software Trailer EBS +

16 Electronic Braking and Aid to Vehicle StabilityBradford University16 Tractor / Trailer Compatibility: Trailer equipped with EBS + RSF Towing VehicleTrailer Specification Functionality No ISO7638 (no ABS) No ABS - LSF - RSF ABS Full functionality EBS Full functionality EBS + ESF Full functionality Full functionality maintained when connected to any towing vehicle equipped with an ISO7638 power supply (5 or 7pin)

17 Electronic Braking and Aid to Vehicle StabilityBradford University17 Control Line Signal Priorities: No Brake Demand: Trailer EBS defines & controls the pressure at the brake chambers Pneumatic or Electric Control Line Signal: higher If the signal would produce a brake chamber pressure higher than the pressure defined by the trailer EBS the pressure associated with the control line signal will be generated. lower If the signal would produce a brake chamber pressure lower than the pressure defined by the trailer EBS the EBS defined pressure will be generated. This principle applies irrespective of whether the brake demand is generated by the driver or the towing vehicle ESP system

18 Electronic Braking and Aid to Vehicle StabilityBradford University18 Conclusions: Trailer “Roll Stability” is effective when connected to a towing vehicle via the ISO7638 connector. Compatible with all ABS, EBS & EBS+ESF towing vehicles ESP-RSF RSF Installation of ESP-RSF on the tractor or RSF on the trailer is not a replacement for good driving practice.

19 Electronic Braking and Aid to Vehicle StabilityBradford University19 Current System Applications: Semi-Trailers Centre Axle Trailers Full Trailers Roll Control Yaw Control Roll Control Yaw Control Roll Control Yaw Control YES Air suspension only No Not necessary YES Air suspension only YES Air suspension only No Not necessary No

20 Electronic Braking and Aid to Vehicle StabilityBradford University20 Towing Vehicle Specification Trailer Specification Semi-trailerCentre Axle Trailer Full Trailer Non RSF RSFESPNon RSF RSFESFNon RSF RSFESF Non ABS ABS / EBS??? EBS + ESF??? Compatibility of Mixed Combinations:

21 Electronic Braking and Aid to Vehicle StabilityBradford University21 GRRF Ad-Hoc Working Group Electronic Vehicle Stability Control “Trailers” 25 – 26 November 2004

Download ppt "Electronic Braking and Aid to Vehicle StabilityBradford University1 GRRF Ad-Hoc Working Group Electronic Vehicle Stability Control “Trailers” 25 – 26 November."

Similar presentations

ELECTRONIC STABILITY PROGRAM (ESP) LECTURER NAME: MR

ELECTRONIC STABILITY PROGRAM (ESP) LECTURER NAME: MR
UNECE Regulation 13 (braking) Proposed amendment to extend Annex 19 and Annex 20 to cover motor vehicles, especially a vehicle stability function Sheet.

UNECE Regulation 13 (braking) Proposed amendment to extend Annex 19 and Annex 20 to cover motor vehicles, especially a vehicle stability function Sheet.
Chapter 30 ABS and EBS.

Chapter 30 ABS and EBS.
Automated Truck Driving Exploring the Benefits and Limits

Automated Truck Driving Exploring the Benefits and Limits
ELECTRONICALLY MANAGED SUSPENSION

ELECTRONICALLY MANAGED SUSPENSION
Enhanced Easy-Stop TM Trailer ABS Sales. Enhanced Easy-Stop Trailer ABS System configurations to meet any air-braked trailer application 2S / 1M, 2S /

Enhanced Easy-Stop TM Trailer ABS Sales. Enhanced Easy-Stop Trailer ABS System configurations to meet any air-braked trailer application 2S / 1M, 2S /
On In-Use requirements UNECE R55 make no distinction between performance and requirement Annex 6 lays down how the performance of coupling equipment shall.

On In-Use requirements UNECE R55 make no distinction between performance and requirement Annex 6 lays down how the performance of coupling equipment shall.
Motor Vehicle Level 3 Anti-Lock Braking Systems Resource 1.

Motor Vehicle Level 3 Anti-Lock Braking Systems Resource 1.
Sensors used in ABS (Anti-Lock Braking System)

Sensors used in ABS (Anti-Lock Braking System)
NEXT GENERATION ANTILOCK BRAKES VELAMMAL COLLEGE OF

NEXT GENERATION ANTILOCK BRAKES VELAMMAL COLLEGE OF
Click for next slide. HWH ® Active Air, is a four-point electronically controlled suspension system that provides ride comfort while driving by rapidly.

Click for next slide. HWH ® Active Air, is a four-point electronically controlled suspension system that provides ride comfort while driving by rapidly.
Traction Control Michael Boersma Michael LaGrand 12/10/03.

Traction Control Michael Boersma Michael LaGrand 12/10/03.
Introduction Electro-Mechanical Brake (1) EMB battery (2) EMB pedal unit with ECU (3) EMB wheel brake module (4) Sensors.

Introduction Electro-Mechanical Brake (1) EMB battery (2) EMB pedal unit with ECU (3) EMB wheel brake module (4) Sensors.
ABS(Antilock braking system)

ABS(Antilock braking system)
ANTI LOCK BRAKING SYSTEM

ANTI LOCK BRAKING SYSTEM
Parts & Accessories. Lights Please visit the following link to view a chart that specifies the required color, position and types of lamps and reflectors.

Parts & Accessories. Lights Please visit the following link to view a chart that specifies the required color, position and types of lamps and reflectors.
Abs.

Abs.
Motor Vehicle Level 3 Electronics and Electronic Components Resource 1.

Motor Vehicle Level 3 Electronics and Electronic Components Resource 1.
Dr. G. Heess, DC AG, 19.11.04 1 st meeting EVSC electronic vehicle stability control Ad hoc working group of GRRF Technical University of Budapest Hungary.

Dr. G. Heess, DC AG, st meeting EVSC electronic vehicle stability control Ad hoc working group of GRRF Technical University of Budapest Hungary.
REPUBLIC OF HUNGARY MINISTRY OF ECONOMY AND TRANSPORT Status report Informal Working Group on the Electronic Vehicle Stability Control Dr. Laszlo Palkovics.

REPUBLIC OF HUNGARY MINISTRY OF ECONOMY AND TRANSPORT Status report Informal Working Group on the Electronic Vehicle Stability Control Dr. Laszlo Palkovics.

Similar presentations

Ads by Google