The new Tenneco ACOCAR active suspension system · Vehicle Dynamics Expo 2010 – Stuttgart The new...
Transcript of The new Tenneco ACOCAR active suspension system · Vehicle Dynamics Expo 2010 – Stuttgart The new...
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Vehicle Dynamics Expo 2010 – Stuttgart
The new Tenneco ACOCARactive suspension system
Bert Vandersmissen, TennecoKoen Reybrouck, Tenneco
Marnix Lannoije, Flanders’ Drive
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Vehicle Dynamics Expo 2010 – Stuttgart
Contents
• The InAST / REVAS Flanders’ Drive research project• The ACOCAR system layout• The ACOCAR system operation• System simulations• Actuator performance• Vehicle performance• Actuator design• Market position of the ACOCAR technology• Conclusion
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Vehicle Dynamics Expo 2010 – Stuttgart
The InAST / REVAS Flanders Drive Project
Vehicle dynamics server: state
estimator
Active suspension
Innovative sensorsActive safety demonstrator
Picture from Triphase
Rapid prototyping software platform
With support of
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Vehicle Dynamics Expo 2010 – Stuttgart
The ACOCAR system layout
PUMP
ELECTRICALMOTOR
ULTRA-CAPACITOR
CES REBOUND VALVE
CES COMPR. VALVE
REB. BLOW-OFF VALVE
COMPR. BLOW-OFF VALVE
REMOTE ACCUMULATOR
INTERNALACCUMULATOR
PISTON ROD
FLEXIBLEHIGH PRES. LINE
FLEXIBLELOW PRES. LINE
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Vehicle Dynamics Expo 2010 – Stuttgart
ACOCAR system – semi-active operation in rebound
suspensionvelocity
actu
ator
forc
e
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Vehicle Dynamics Expo 2010 – Stuttgart
ACOCAR system – active operation in rebound
suspensionvelocity
actu
ator
forc
e
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Vehicle Dynamics Expo 2010 – Stuttgart
ACOCAR system – semi-active operation in compression
suspensionvelocity
actu
ator
forc
e
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Vehicle Dynamics Expo 2010 – Stuttgart
ACOCAR system – active operation in compression
suspensionvelocity
actu
ator
forc
e
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Vehicle Dynamics Expo 2010 – Stuttgart
Current situation (e.g. primary rideon road ISO 8608 Class D)
Defined heave, pitch and rolltargets for primary ride
Simulations to generateforce-velocity working points
Also targets defined for secondary and NVH
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Vehicle Dynamics Expo 2010 – Stuttgart
Active suspension working points &Iso-Power curves on different road profiles
Rough RoadNormal Road
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Vehicle Dynamics Expo 2010 – Stuttgart
Vehicle performance
• Roll control– Roll control is very good for normal and sporty street
use: ‘flat vehicle behavior’
• Body control– Excellent (sky hook) body control– 5 l/min pump flow peaks are sufficient on the worst
road profiles, less on other road profiles– See next slide with video
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Vehicle Dynamics Expo 2010 – Stuttgart
Vehicle PerformancePassive vs. ACOCAR active suspension
Passive Active
Blauwe Kei, Lommel, 80km/h
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Vehicle Dynamics Expo 2010 – Stuttgart
Vehicle performance: Energy consumption Rough road (w/wo Ultracaps)
Average power consumption pumps:
• 840 W / vehicle
• 210 W / corner
(Blauwe Kei, Lommel, 60km/h)
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Vehicle Dynamics Expo 2010 – Stuttgart
Vehicle performance: Energy consumptionNormal road (w/wo Ultracaps)
Average power consumption pumps:
• 100 W / vehicle
• 25 W / corner
(Road 10, Lommel, 100km/h)
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Vehicle Dynamics Expo 2010 – Stuttgart
Design front ACOCAR actuator
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Vehicle Dynamics Expo 2010 – Stuttgart
Design front ACOCAR actuator
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Vehicle Dynamics Expo 2010 – Stuttgart
Design rear ACOCAR actuator
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Vehicle Dynamics Expo 2010 – Stuttgart
Market position of the ACOCAR technology
• Ultimate comfort combined with excellenthandling
• Full active suspension system with low powerconsumption
• Eco driving mode with almost no powerconsumption is possible
-> Target segment are top-class limousines andGT’s
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Vehicle Dynamics Expo 2010 – Stuttgart
Conclusions
• ACOCAR provides unsurpassed vehicleperformance on comfort and handling
• Low energy consumption• Low weight and easy packaging vs. current
active systems• Suited for the next generation of conventional
hybrid or electric top range vehicles• Demonstration vehicles available