acocar active suspension systems - iqpc corporate · acocar active suspension systems miguel dhaens...

ONE BOLD VISION ONE EXTRAORDINARY FUTURE

ACOCAR active suspension systems

Miguel Dhaens - advanced chassis research

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Agenda

2

• TENNECO company profile

• Towards automated driving - MegaTrends for mobility

- Link to suspension systems

• ACOCAR - New hydraulic layout

- Working principle

- Achievements to date

• VISION: next steps - Achievements to date

- Future Opportunities

6th Int conference Advanced suspension systems 2014 Wiesbaden



Tenneco Global

3

• Nearly 25,000 employees

• 89 manufacturing facilities

• 14 engineering & technical centers

• 2012 Revenue $ 7.4 billion

• Global Market Leader

Clean Air 67%

Ride Performance

33%



Tenneco Europe

4

Tenneco 22,7%

RP Light Vehicles

Market Share 2012



Mega trends influences future mobility

5

Climate change Urbanisation/

demographic change Connectivity

(NEAR) ZERO

EMISSION through

more efficient and

alternative energy

URBAN MOBILITY

through telematics

and Smart Grid

Integration

ZERO ACCIDENTS

by stability and

predictive ADAS

systems

INTELLIGENT MOBILITY

Spend less

energy for

mobility

Utilize

sustainable

energy source

Intermodality to

handle people

demand for

mobility

Support people

to go from A to B

hassle free & at

elevated comfort

and social

entertainment

during travel

Safety extend

mobility for

aging generation



Towards automated driving

6

Today

Tomorrow:

Least often

Most often

Read & Work

Emailing Texting

Navi

Phone talk + dial

Music

Eat & drink

Talking

Perceived as dangerous Only done during slow traffic or standstill

Are already done but

still perceived too

dangerous

Regulary done while driving and

(mostly) not perceived dangerous

Automated driving (mid to long term)

system takes over in case of delegation by the driver

relieving the driver for enjoyment increase

Internet

In a world where everything is possible, time becomes the bottleneck. Time spending will be optimized, even while driving!



Handling / feedback

Comfort

Towards automated driving

7

Our expectations of the desired information feedback is depending of time and conditions such as road surface, weather and situation and can be reverted at any time!



Tenneco Ride Performance Products

CVSA Air Spring

CVSA

Conventional Module

Conventional

Strut

Kinetic H2 CES

8

Cabine Demper

Axle damper

Light Weight

Moto / Bike Suspension

Dual Mode

ACOCAR Active Suspension

Elastomers



Overall driving experience

Road holding

Safety

Flexibility (dashboard button)

Comfort

Control

Fun to drive

Agility

Suspension comfort

Lean angle in a curve

Acceleration

Braking

Driving stability

Silence of the car

The detailed evaluation shows a better felt performance over all criteria of driving experience for the vehicle with CVSA but especially for suspension comfort over all three segments.

Overall evaluation of driving experience

9

DT8: How do you describe the overall driving experience according to the following criteria?

Base: n=51 (CC), n=52 (UMC), n=52 (SUV); Top2 (‘excellent, very good”) answers in %

∆

25

45

17

29

41

23

27

24

44

27

8

12

23

12

∆

11

22

11

35

35

25

19

19

60

25

9

14

14

15

∆

21

29

16

33

24

33

5

14

34

29

22

12

21

18

Consumer test - Driving experience



Agenda

10





- Working principle







Monotube ACOCAR

11

Fully active suspension



Monotube ACOCAR

12

Next generation ACOCAR

ACCUMULATOR

PUMP

CONTINUOUS

CONTROLLABLE

VALVES

ELECTRICAL MOTOR

Q

ACCUMULATOR

PUMP

CONTINUOUS

CONTROLLABLE

PISTON VALVE

CONTINUOUS

CONTROLLABLE

BASE VALVE

ELECTRICAL

MOTOR

ULTRA

CAPACITOR



Monotube ACOCAR

13

Working principle: Passive rebound

velocity

Pump standby

Controls force

Rod velocity vs pump flow

Soft



Monotube ACOCAR

14

Working principle Passive compression

velocity

Pump standby

Controls force

Rod velocity vs pump flow

Soft



Monotube ACOCAR

15

Working principle Inward force (active & passive)

velocity

Controls force

Soft



Monotube ACOCAR

16

Working principle Outward force (active & passive)

velocity

Controls force

Soft



Monotube ACOCAR

17

Working principle Low forces (active & passive)

Controls force

Soft



Monotube ACOCAR

18

Achievements to date

Improvements:

• Increased static forces • Optimized hydraulic layout

• Even lower power consumption • More efficient use of hydraulic power

• Low power standby mode

with fast response time

• Significant improvements in ride performance

• New clean sheet controller developed



Agenda

19





- Working principle







VISION: next steps

20

Road surface scanning

Vision: Scanning the road upfront

• Potential:

• Feedforward control for road roughness

and pothole detection

• Status:

• Completed control strategy

• Ongoing Quarter car & four poster tests with prototype sensor

Vision controller

Feedforward window

t

Ro

ad

pro

file

Quarter car

test setup

Acocar

actuator

Control signals



Conclusion

21

• Increased functionality

- Balancing feedback versus comfort

• Predictive controllers

- Using preemptive systems

- Enhanced comfort

• Future opportunities

- Integration with ADAS systems




Tenneco – Technology Driver

22

For more info, please contact:

www.tenneco.com


acocar active suspension systems - iqpc corporate · acocar active suspension systems miguel dhaens...

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