Presentation is loading. Please wait.

Presentation is loading. Please wait.

Advanced Vehicle Control Systems

Similar presentations

Presentation on theme: "Advanced Vehicle Control Systems"— Presentation transcript:

1 Advanced Vehicle Control Systems
S. Balachandran Vice President

2 From Brake Controls to Vehicle Dynamic Controls
AGENDA About WABCO India Commercial vehicle brakes system trend Introduction to ABS & advantages over conventional braking Electronic Braking System (EBS) Full Air Brake Controls with ABS/ESC vs. EBS/ESC Electronically controlled air suspension Modular Door Control Systems – MTS Tire Pressure Monitoring - TPM Automatic Manual Transmission – AMT Driver assistance systems From Brake Controls to Vehicle Dynamic Controls

3 WABCO INDIA LIMITED Sundaram – Clayton Limited was established in 1962 as a joint venture with Clayton Dewandre UK ( Now WABCO Vehicle Control Systems) The Brakes Division of Sundaram-Clayton Limited has now become a separate company, WABCO-TVS (INDIA) Limited. On 3rd Jun’09 WABCO raised its ownership position to 75% equity investment and balance to public On 2nd Aug 2011, WABCO-TVS (INDIA) LIMITED was renamed as WABCO INDIA LIMITED WABCO INDIA has three manufacturing sites (located at Chennai, Jamshedpur and Mahindra City) … over 40 years of service to the Indian automotive industry

MARKET LEADER in Indian Medium and Heavy Commercial Vehicle industry Sales of Rs. 899 Cr in , 50% growth Over 2,400 EMPLOYEES, 200 ENGINEERS 3 MANUFACTURING LOCATIONS in India MAJORITY CONTROL BY WABCO in Jun 2009 listed on NSE / BSE with the stock symbol WABCOINDIA / Listed in stock exchanges in India

5 WABCO INDIA JOURNEY A successful journey 5
New plant at Jamshedpur New Plant at Mahindra city ABS Introduction by OEMs Focus on Exports Products meeting global standards F&S Super platinum ABS F&S Super platinum Air dryer, Automatic brake adjustment and Load sensing valve Products for Stallion vehicles (Army application) TPM award ACMA award High pressure compressors Deming prize TPM Kick-off Japan Quality Medal A successful journey 5

Qingdao (340) Seoul, Pyungtaek (90) Jinan (280) Shanghai (90) Tokyo, Kawagoe (80) Hong Kong (3) Chennai (1,400) Singapore (7) Melbourne (3) > JV w/ Sundaram Clayton Ltd, India Technical Licensing in China APAC HQ in Hong Kong JV in Jinan, China Factory in Pyungtaek Korea APAC HQ moved to Shanghai QD Factory Official Inauguration Jamshedpur Factory in India Mahindra WC Factory in India WABCO takes majority control 6

7 CUSTOMER VALUES WABCO is working on global TECHNOLOGY trends relevant to our customers We have a clear path to enhance VEHICLE EFFICIENCY and ENVIRONMENTAL SUSTAINABILITY by 20% Our vision is to improve ADVANCED SAFETY and DRIVER EFFECTIVENESS, and reduce the number of commercial vehicle accidents by 50% by 2020 We are involved in developing PRODUCTS and FUNCTIONALITIES to better meet these needs

8 Truck/Bus-Specific Trends
BRINGING VALUE TO CUSTOMERS Increasing mobility Availability of natural resources Growing need for environmental care Growing demand for safety and security Shift of economic power among regions Truck/Bus-Specific Trends Fuel Efficiency Stability control Braking systems control Energy Recovery ABS Suspension control Weight Reduction ADAS 8 8 8

9 PRODUCT PORTFOLIO Vacuum products 2% Air Compressors 13%
Air Processing 12% Conventional Brake Controls 21% Brake Chambers & Actuators 22% Anti-Lock Braking System (ABS) 7% Vacuum products 2% Repair kit sales 10% Exports (Inter-company) 12% Exports (Aftermarket) 1% % Sales sales : Rs 899 Cr

10 WABCO - The Supplier of Control Systems for Commercial Vehicles
Complete Air Brake System or ABS / ASR Air Dryer / APU Air Compressor Front Brakes Rear Brakes EBS with Stability Control Clutch Servo Suspension Controls Pneumatic Electronic with / w/o Shock Absorber Control Temperature Control Gear Box Controls Retarder Control Central Board Computer Reservoirs

11 Commercial Vehicles – Braking System Trend
Increasing vehicle speeds 30-80 kmph 1940 1950 1960 1970 1980 1990 2000 Fail-safe Car –like feel Stability Single line air brake Dual line air brake Load Sensing Valve Automatic Slack Adjuster ABS/ASR EBS Varying load conditions Adjusting lining wear Varying road conditions Braking Technology 2010 ESC ACC Focus on ADAS beyond 2011

12 Typical Dual Brake System layout
Hand brake Spring Brake Acctuator For Hand brake 12

13 Able to stop the vehicle by
System Function – Hand brake Able to stop the vehicle by Hand brake when both Service circuits failed.

14 Benefits of Hand brake system
Able to stop the vehicle by Hand brake when both Service circuits failed. During vehicle parking Hand brake ensure the locking of the rear wheels Driver can operate the vehicle when foot brake fail, by operating hand brake as service brake.

15   For parking & emergency braking Spring Brake Chamber
Ensure the spring brake chambers in wind in condition Spring Brake Chamber Wind in condition Wind off condition

16 Reliable ABS Portfolio
ABS System Reliable ABS Portfolio 16

17 ABS Schematic Layout – 4S/4M

18 ABS ADVANTAGE Air Brake with ABS Air Brake
3/31/2017 Air Brake with ABS Air Brake Sub-optimal stopping distances on dry/slippery roads Wheel locking while panic braking or in slippery road conditions can lead to accidents. Tyre life reduced due to wheel locking Experienced driver for driving on extreme road conditions Improved stopping distances especially in dry/slippery roads Wheel locking avoided. An important safety Criterion to prevent accidents. Increase in tyre life. COST SAVING to the end customer. System will assist less experienced driver on extreme road conditions Demo on wheel locking Demo Without ABS Demo With ABS 18

19 Proportional Relay Valve
Electronic Braking System - EBS Axle-modulator back up valve ABS solenoid valve Proportional Relay Valve EBS ECU Brake signal transmitter WABCO EBS Components - 4S/4M

20 The electropneumatic circuit consists of
4S/4M for 4x2 Vehicles The electropneumatic circuit consists of (1) brake signal transmitter (BST) with 2 integrated sensors and switches (2) central electronic - control unit (central module CM) (3) electro pneumatic proportional relay valve (PRV) (4) axle modulator with integ rated ECU (5) two ABS solenoid valves (6) ESC module (7) steering wheel sensor (8) electro pneumatic trailer control valve (9) back up valve (10) wheel speed sensor front axle (11) wheel speed sensor driven axle

21 EBS provides advantages for all customer
Why EBS? Advantages of EBS vs. ABS Shorter brake distance Shorter pneumatic pipes Electro pneumatic brake control Higher pressure in brake system Pipe connections are electrically controlled Installation advantages Less pneumatic and electric connectors No additional components if ESC is installed Improved brake pedal feeling Pedal feeling similar to Cars Deceleration control instead of brake pressure control Better diagnosis Self test Fault memory Simplified brake check Cost benefit for the OEM and end user Less lining wear Less system cost Less service cost Functions due to parameter setting New functions w/o additional valves Hill Start Funtion Brake Assist Brake management EBS provides advantages for all customer

22 Stability Controls – RSC & ESC

23 Roll Stability Control
Philosophy of RSC is to reduce vehicle speed there by preventing vehicle roll over RSC controls the lateral acceleration If the lateral acceleration exceeds a certain level RSC controls the engine torque including its retarder and if necessary activates the drive axle brakes through the ASR differential brake valve and activates the brakes of trailer additionally through RSC valve Demo on RSC

24 ABS based Roll Stability Control ( RSC ) - Components
Accelerometer integrated in ABS ECU (or ESC Module) ATC valve for drive axle braking RSC valve for trailer braking

25 How does ESC work at critical vehicle yaw ?
Directional Stability Control Identification of unstable driving conditions : Over steering Under steering directional instability ESC brake application Reduction of engine torque to slow down vehicle Selective braking of single wheels to compensate deviation from stable driving conditions How does ESC work at critical vehicle yaw ?

26 ABS based ESC add. components
ESC components Solenoid Valve for front axle braking Pressure Sensor for driver brake demand Steering Angle Sensor ESC Module ATC valve for drive axle braking Valves for trailer braking black/white controlled For ABS additional valves needed

27 EBS based ESC add. components
ESC components Solenoid Valve for front axle braking Pressure Sensor for driver brake demand Steering Angle Sensor ESC Module ATC valve for drive axle braking Valves for trailer braking X X X X X Fragen was ca. die Kosten pro montierte Komponente sind. black/white controlled Easy ESC extension with EBS

28 Electronically controlled air suspension ECAS

29 - Electronically Controlled Air Suspension -
ECAS - Electronically Controlled Air Suspension - ECAS consists of Electronic Control Unit Remote Control Unit Height Sensors Pressure Sensors Solenoid Valve Blocks Reasons for ECAS: Simple installation / Few parts / Cost Reduction Improvement of Conventional Air Suspension Functions Safety Concept Less air consumption Kneeling down function Control from driver’s seat

30 Air Suspension (ECAS) electronically controlled
Nominal level Supply height sensor bellow solenoid valve ECU ECU


Purpose The function of MTS is to actuate and monitor with identical devices up to five doors of different construction of inward pivot / outward pivot doors and pneumatic / electrically driven doors MTS components Electronics (for pneumatic or electrical doors) Sensors for swinging doors Door control valve Door cylinder Emergency valve with switch Pressure switch

33 FEATURES OF MTS Proven system >Doors controlled by MTS main pneumatic-functions in series application since 20 years System focus on safety for passengers, drivers and workshop peoples Further increase of safety by connection of additional equipment (sensitive edges, light barriers…) easily possible One solenoid-valve to control opening and closing of the door including damping and the safety-function “powerless”. Door system connected to the vehicle at the first door only optional by: conventional wiring or CAN - data bus (according ISO 11898) Reduced wiring due to internal data bus between the door ECUs. It is possible to link up to 5 doors

34 Tire pressure Monitoring ( TPM)
The function of TPM is to monitor the tyre pressure Method Indirect monitoring by analyzing signals from the ABS wheel speed sensor Small differences of tire circumference are accumulated by wheel module (sensor) and transmit to ECU through wireless which in turn display the Tyre pressure data on the display cluster located in the dash board. Benefits Maintaining the tyre pressure results in saving in fuel consumption

35 Components in the TPM system Simple System Structure
Wheel Modules Data on Integrated Multi-function Display SAFETY - Correct Tire Pressures ECONOMY - Less fuel consumption Electronic Control Unit (ECU) Simple System Structure

36 Automated Manual Transmission (AMT)

37 Different types of Transmission systems

38 Standardization and Modularity to shorten time to market
WABCO OptiDrive system overview Value to Customer OptiDriveTM BENEFITS Easily adaptable to existing trucks and transmissions Lower development cost Shorter time to market Full functionality including drive software Minimized space requirements at gearbox Reliable design based on long experience Development and Testing according to state-of-the-art specifications Offering full system development Description Here are some specifics on two applications that will drive new sales for us -- Truck Automated Transmissions and Air Disc Brakes. Both of these are opportunities where we have a competitive advantage Innovation Mitigates Price Pressure Leaders Define the Product / System - Others Must Pay to Follow Migration Path : Manual>>Clutch Servo>>Automated Truck Automated Transmissions There is a significant market opportunity here. 50% of the Heavy Trucks delivered in Europe will have automated transmissions by The US will follow after that repeating the pattern of ABS We have partnerships with Volvo, DaimlerChrysler and ZF in Europe, and these will extend globally as familiarity with the technology increases. Volvo will include our technology on its flagship truck [FH12] – it’s called the “I-Shift” – i stands for intelligent And, we are on track to deliver the sales projections we gave in February this year. In fact, if anything we may have been a little conservative. Sales in 2003 were ~$ 70M, and we expect sales of ~ $155M in 2008 WABCO OptiDrive's high degree of modularity significantly reduces the development time required for application to transmission & vehicle platforms, enabling faster time to market for vehicle and transmission manufacturers Standardization and Modularity to shorten time to market 38 38

39 WABCO AMT system overview
Shift Lever Unit incl. TCU Passive Speed Sensor Active Speed Sensor Pneumatic Clutch Actuator XY-Actuator SYSTEM CONTENT 39 39 39

40 WABCO AMT system overview
SLU XY-Actuator Inductive Speed Sensor Active Speed Sensor PCA SYSTEM CONTENT 40

ABS control ESC stabilize anticipate ADAS Demo on ADAS From controlling –to anticipating

42 Driver Assistance Systems Technology and Products
WABCO Driver Assistance Systems Technology and Products Headliner Cluster Camera Lane Departure Warning & Lane Keeping Support support of long range sensor Lane Departure Warning Side Sensors 24 GHz Radar or ultrasonic Blind spot detection Long Range 77 GHz Radar or Infrared Laser Sensor ACC Collision Warning Collision Mitigation Autonomous Emergency Braking

Experienced vehicle control & transmission automation specialist Know-how across vehicle control systems Capability to offer a complete system out of one hand A more efficient and economic system development A simplified and streamlined project management through local support A product that is fully tested as a complete system A product that is tailored to your requirements 43


Download ppt "Advanced Vehicle Control Systems"

Similar presentations

Ads by Google