Sjaak Active Suspension
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Transcript of Sjaak Active Suspension
Tenneco’s Electronic Damping and Advanced Suspension portfolio
Sjaak Schel, R&D Technical Team Leader
Vehicle Dynamics Expo June, 2012
2006 2007 2008 2009 2010 2011 2012
Audi A6/A6 Allroad
2004 2005
AudiQ3BMW 3 Serie
AMG CLSVW Tiguan R
Audi Q3
BMW X3Volvo S60/V60
Mercedes:SLKCLS
Volvo XC60VW:
Passat/cc/Variant/R36Golf
TiguanEos
Scirocco
Volvo S80Ford Galaxy/S-Max
Volvo V70/XC70Ford Mondeo
Mercedes C-Class
Mercedes:E-Coupe,E-Cabrio,E-Class
AMG E-ClassVW Golf Gti/R20
Launched in production
Kinetic H2/CESsportscar
perf
orm
ance
System cost
Dual modedamping
Adaptive dampingDRiV
Semi-activedamping
Kinetic H2/CESanti-roll system
Acocar activesuspension
Portfolio
Tenneco Suspension Technologies
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System content
v
F
Performance
• Highest technology development• Active forces• Classic coil springs to carry the static
load of the vehicle• No torsion bars
Acocar active suspension
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1-6000
-4000
-2000
0
2000
4000
6000Active damper characteristic
damper velocity [m/s]
dam
per
forc
e [N
]
Ipv = 0.3A
Ibv = 1.6A
Ibv = 0.3A
Ipv = 1.6A
PUMP1-8 l/min
ELECTRICALMOTOR 12V
CES REBOUND VALVE
CES COMPR. VALVE
REB. BLOW-OFF VALVE
COMPR. BLOW-OFF VALVE
LOCALACCUMULATOR
PRESSURE TUBE
PISTON ROD
FLEXIBLEHIGH PRES. LINE
FLEXIBLELOW PRES. LINE
NON-RETURNVALVE
• Each corner equiped with controlled hydraulic pump
• Semi-active valves to control rebound and compression damping forces
• Different operating modes, from semi-active to full-active
Acocar active suspension
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1-6000
-4000
-2000
0
2000
4000
6000Active damper characteristic
damper velocity [m/s]
dam
per
forc
e [N
]
Ipv = 0.3A
Ibv = 1.6A
Ibv = 0.3A
Ipv = 1.6A
Pump flow 8 l/min
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1-6000
-4000
-2000
0
2000
4000
6000Semi-active damper characteristic
damper velocity [m/s]
dam
per
forc
e [N
]
Ibv = 0.3A
Ibv = 1.6A
Ipv = 1.6A
Ipv = 0.3A
Pump flow 0 l/min
Acocar active suspension
Acocar active suspension
Weight & packageOverall weight comparable to std vehicle
No anti-roll barsLightweight
CostValue for money
Target platforms:High end limousines and GT-cars
PerformanceHighest level suspension performance
System operates also in active quadrantsSuperior comfort combined with excellent handling
Energy consumptionLow energy consumptionDynamic control of pump flow
Acocar active suspension
Kinetic H2/CES anti-roll system
• 4 corner actuators connected with hydraulic lines => passive anti-roll system
• Semi-active valves to control damping• Switch on dashboard to select driver
preference• Ability to adjust roll stiffness depending on
system pressure• Classic coil springs to carry the static load
of the vehicle• No torsion bars
v
F
Comfort valves = Closed
Kinetic H2/CES anti-roll system
roll
Comfort valves = Closed
Kinetic H2/CES anti-roll system
articulation
Weight & package:Adaptive damping and roll stiffness
without weight increaseNo anti-roll bars
Lightweight
CostCheaper than active roll control
& semi active dampingTarget platforms
Sport carsSUV’s
Luxurary limousines
PerformanceBest compromise between
handling, comfort and tyre gripAnti-roll & semi-active damping combined into 1
Superior articulation & traction
Energy consumptionLow energy consumption
Passive anti-roll system
Kinetic H2/CES anti-roll system
Semi-active damping
• Continuously variable damping• Switch on dashboard to select driver
preference• External valve technology (3-tube)• Internal valve technology (double tube &
mono tube)
v
F
New hybrid ces valve
Pilot stage in orificecontrolled mode
Pilot stage in pressurecontrolled mode
Semi-active damping
•improved tuneability•Improved comfort
Weight & packageExcellent for light weight (int valve)
Monotube possible (int valve)
CostGood performance to cost ratio
Target platformsAll vehicles, starting from C segment
PerformanceBest compromise between
handling & comfortSwitch to select driver preference
Fully automatic system
Energy consumptionLow energy consumptionLow current during normal driving
Semi-active damping
DRiV corner
With integrated electronics
Local communication network (LIN,
PWM…)
Accelerometer (IMU) in CGExisting ECU
Preferred DRiV system layout
• 4 valves incorporated in the rodguide• Integrated electronics to control the
corner valves• Primary targeted to body control• Wheel control through passive
hydraulic damping
Adaptive damping DRiV
-1000
-750
-500
-250
0
250
500
750
1000
1250
1500
-1,500 -1,000 -0,500 0,000 0,500 1,000 1,500
Damper Velocity [m/sec]
Dam
per
Forc
e [N
]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Base GTI
Weight & packageAlmost “conventional” packaging
Suitable for integrated chassis control
CostLower system cost vs semi-actice
Target platformsSmall & midsize vehicles
PerformanceAffordable adjustable damping
Switch on dashboard to select driver preferenceFully automatic system
Improved comfort & handling16 damping stages
Energy consumptionLow energy consumption
Latching valve technology
Adaptive damping DRiV
Compression
0
10
20
30
40
50
60
70
80
90
100
0.000 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000
Vel [m/s]
Forc
e [d
aN]
Rebound
0
20
40
60
80
100
120
140
160
180
200
0.000 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000
Vel [m/s]
Forc
e [d
aN]
• 2 damping modes: soft & firm• Driver can select between 2 damping
settings• No ECU required• Internal valve technology (double
tube & mono tube)
Dual mode damping
Weight & packageExcellent for light weight (int valve)
Monotube possible (int valve)No ECU
CostLowest cost electronic damping
Target platformsEconomic vehicles
Performance1 step up vs passive damping
Driver can select 2 damping characteristics2 vehicles in 1
Energy consumptionLow energy consumption
Low hold current
Dual mode damping