acocar active suspension systems - iqpc corporate · 2017. 5. 9. · acocar active suspension...
TRANSCRIPT
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
ACOCAR active suspension systems
Miguel Dhaens - advanced chassis research
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
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%
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Tenneco Europe
4
Tenneco 22,7%
RP Light Vehicles
Market Share 2012
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Mega trends influences future mobility
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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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Towards automated driving
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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!
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Handling / feedback
Comfort
Towards automated driving
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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!
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Tenneco Ride Performance Products
CVSA Air Spring
CVSA
Conventional Module
Conventional
Strut
Kinetic H2 CES
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Cabine Demper
Axle damper
Light Weight
Moto / Bike Suspension
Dual Mode
ACOCAR Active Suspension
Elastomers
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
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
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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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Agenda
10
• 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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Monotube ACOCAR
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Fully active suspension
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Monotube ACOCAR
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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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Monotube ACOCAR
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Working principle: Passive rebound
velocity
Pump standby
Controls force
Rod velocity vs pump flow
Soft
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Monotube ACOCAR
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Working principle Passive compression
velocity
Pump standby
Controls force
Rod velocity vs pump flow
Soft
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Monotube ACOCAR
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Working principle Inward force (active & passive)
velocity
Controls force
Soft
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Monotube ACOCAR
16
Working principle Outward force (active & passive)
velocity
Controls force
Soft
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Monotube ACOCAR
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Working principle Low forces (active & passive)
Controls force
Soft
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Agenda
19
• 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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
VISION: next steps
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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
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Conclusion
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• Increased functionality
- Balancing feedback versus comfort
• Predictive controllers
- Using preemptive systems
- Enhanced comfort
• Future opportunities
- Integration with ADAS systems
6th Int conference Advanced suspension systems 2014 Wiesbaden
ONE BOLD VISION ONE EXTRAORDINARY FUTURE
Tenneco – Technology Driver
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For more info, please contact:
www.tenneco.com