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B MW Mot or ra d Washington, DC S ept em be r 2006 BM W Moto rrad Sept. 20 06 Page 1 Motorcycle Active Safety (Crash Avoidance) See and Be Seen Maintain Stability Proper Training

BMW Motorrad Seite 1 BMW Motorrad Motorcycle Active Safety … · 2016-06-20 · BMW Motorrad Seite 1 BMW Motorrad München Mai 2006 Freude am Fahren BMW Motorrad Wa shingt on, DC

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  • BMW Motorrad

    Seite 1

    BMW Motorrad

    MünchenMai 2006 Freude am Fahren

    BMW Mot orrad

    Washingt on, DCS ept ember 2006

    BMW MotorradSept. 2006Page 1 Motorcycle Active Safety (Crash Avoidance)

    See and Be SeenMaintain StabilityProper Training

  • BMW MotorradSept 2006Page 2 Lighting Technology for Active Safety

    “See and be seen”

    Day

    Recognition by other road users

    Allow estimation of speed / distance

    NightGood light distribution

    Optimum range

    Resolution for risk identification

    Minimum glare

  • Xenon Headlamps (High Intensity Discharge)Comparision

    BMW MotorradSept 2006Page 3

    Halogen Xenon

    Halogen Xenon

  • Xenon HeadlampsBMW MotorradSept 2006Page 4

    luminous flux(2-2,5 times more)

    perception of colorsTrue colors

    light colorSimilar to daylight 4200K

    Less tiring

    constant power outputLess variation

    illuminationBetter uniformity

    Increased range

    Xenon

    safety / comfortImprovement

    field of view extended

    higher attention level

    power consumption

    30% less electrical consumptionfuel savings

    life time (bulb)corresponds to life of the bike

  • Tire Pressure Monitoring (RDC)“Maintain Stability”

    BMW MotorradSept 2006Page 5

    Correct tire pressure is crucial!

    The BMW Tire Pressure Monitoring system (RDC) provides reliableinformation on the current tire pressure.

    Significant pressure loss: a yellow or red lamp warning

  • Tire Pressure Monitoring (RDC) Top View

    BMW MotorradSept 2006Page 6

    CAN

    Display CAN BUS Control UnitReceiver

    433Mhz transmission

    Sensors front / rearPressure / Temp.

  • RDCInformation / Warnings

    BMW MotorradSept 2006Page 7

    Alert

    Incorrect tire pressure- value is blinking -

    Warning

    Incorrect tire pressure- value is blinking -

    Information

    tire pressure valuesfront/rear indicated

  • BMW Motorrad

    Seite 8

    BMW Motorrad

    MünchenMai 2006 Freude am Fahren

    The New Integral ABS“Maintain Stability”

  • BMW MotorradSept 2006Page 9 Why ABS?

  • The new Integral ABSEvolution of ABS.

    BMW MotorradSept 2006Page 10

    ABS 8M

    I-ABS

    ABS 5M

    I-ABS

    ABS 2

    ABS 1

    0

    2

    4

    6

    8

    10

    12

    14

    1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008Year

    Wei

    gh

    t

  • The new Integral ABSDevelopment of Integral ABS.

    BMW MotorradSept 2006Page 11

    Development targets of Integral ABS

    • Shorter stopping distance.

    • Excellent response.

    • Simplification of system architecture.

    • Optimum distribution of brake forces on front and rear wheel.

    • Load condition taken into account.

    • Improvement of brake feel.

    • Weight reduction.

    • Complete self-diagnosis.

    • Easy to operate.

  • The new Integral ABSDevelopment

    BMW MotorradSept 2006Page 12

    • Further development of ABS valve systems in the automotive sector enables use in motorcycles with integral function.

    • Valve systems are a compact unit.

    • Simplification of system architecture.

    • Integral ABS, derived from automotive Electronic Stability Control, provides the possibility for interfacing with other driving dynamics control systems.

  • The new Integral ABSComponents

    BMW MotorradSept 2006Page 13

    pressure modulator

    front wheel sensor rear wheel sensorfootbrake lever

    handbrake lever

  • The new Integral ABS Pressure modulator.

    BMW MotorradSept 2006Page 14

    Electronics

    Pump motor

    Hydraulic connector

    Low pressurereservoir

    Pressure sensor

    Valves

    Piston pumpElectrical

    connector

  • The new Integral ABS Hydraulic circuit

    BMW MotorradSept 2006Page 15

    Pressure sensor

    Piston pump

    Low pressure reservoir

    Front brake circuit hinterer Bremskreis

    Outlet valve Inlet valve

    Brake master cylinder

    Wheel-speed sensor

  • The new Integral ABS Hydraulic circuit

    BMW MotorradSept 2006Page 16

    Pressure sensor

    Piston pump

    Low pressure reservoir

    Front brake circuit

    Outlet valve Inlet valve

    Brake master cylinder Electrical reversing valve

    Cut valve

    Outlet valve

    motor

    Rear brake circuit

    Inlet valve

    Wheel-speed sensor

  • The new Integral ABSHydraulic circuit

    BMW MotorradSept 2006Page 17

    Rider applies front brake

    Pressurized lines

  • The new Integral ABSHydraulic circuit

    BMW MotorradSept 2006Page 18

    Pressurised linesPressure free lines

    Rider applies front brake / Active pressure build-up on rear wheel

  • The new Integral ABS Hydraulic circuit

    BMW MotorradSept 2006Page 19

    Rider applies rear brake

    Pressurised lines

  • The new Integral ABS Hydraulic circuit

    BMW MotorradSept 2006Page 20

    ABS control on front wheel

    Pressurised linesABS control intervention

  • The new Integral ABS Hydraulic circuit

    BMW MotorradSept 2006Page 21

    Pressurised linesABS control intervention

    ABS control on rear wheel

  • The new Integral ABS Main features of Integral ABS.

    BMW MotorradSept 2006Page 22

    Concept

    • Significantly improved brake feel since there is no brake boost function.

    • Improvement of brake performance when maneuvering(ignition off).

    • Improved feedback on ABS braking due to analog valves.

    • Weight 2.3 kg (5 lbs.).

    • Low power input and power requirement.

    • Maintenance same as without ABS.

  • The new Integral ABS Main features of Integral ABS.

    BMW MotorradSept 2006Page 23

    Function

    • Improved use of road surface traction, especially when it changes suddenly.

    • Optimized detection and control of rear wheel lift-off.

    • Rapid adaptation of optimum brake force distribution to load conditions.

    • Extended diagnosis function and system monitoring.

    • Data provision by Integral ABS for ASC.

    • Can be deactivated for off-road use.

  • The new Integral ABS Integral function – brake force distribution.

    BMW MotorradSept 2006Page 24

    Braking when leaning

    Bra

    ke fo

    rce

    Cornering force

    Required cornering force

    Maximum transferable cornering force

    Without integral function, only front brake

    Kamm´s circle - front wheel

    Max. grip

  • The new Integral ABS Integral function – brake force distribution.

    BMW MotorradSept 2006Page 25

    Braking when leaning

    Bra

    ke fo

    rce

    Cornering force

    Required cornering force

    Maximum transferable cornering force

    Without Integral function, only front brake

    Maximum transferable cornering force

    With Integral function

    Kamm´s circle – front wheel

  • The new Integral ABS Integral function – brake force distribution.

    BMW MotorradSept 2006Page 26

    Avoid: increased leaning position requirement

    Bra

    ke fo

    rce

    Cornering force

    Without Integral function, only front brakeWith Integral function

    Kamm´s circle front wheel

    Fall

  • The new Integral ABS Integral function

    BMW MotorradSept 2006Page 27

    Stopping the vehicle on a slope without Integral function

    Weight force

    Normal force

    Transferable brake force on front wheel

    Slope downforceResulting downforce

    Transferable brake force on front wheel

    Motorcycle can slip back with locked front wheel.

  • The new Integral ABS Integral function – braking on a gradient.

    BMW MotorradSept 2006Page 28

    Stopping the vehicle on a slope with Integral function

    Weight force

    Normal force

    Slope downforce

    Resulting downforce

    Transferable brake force on front wheel

    Transferable brake force on front wheel

    Transferable brake force on rear wheel

    Transferable brake force on rear wheel

    Motorcycle can be held safely on the slope.

  • The new Integral ABS Lift-off detection of Integral ABS.

    BMW MotorradSept 2006Page 29

    Lift-off control

    • Rear wheel lift-off is detected by comparing wheel speeds and pressure in the rear wheel circuit.

    • When lift-off is detected, brake pressure in front wheel must be reduced.

    • This provides stabilization.

  • The new Integral ABS Complete self-diagnosis of Integral ABS.

    BMW MotorradSept 2006Page 30

    Diagnosis capability

    • Self-diagnosis of entire system on system start.

    • Continuous self-diagnosis while traveling.

    • Constant checking of plausibility for sensor signals.

  • The new Integral ABS Complete self-diagnosis of Integral ABS.

    BMW MotorradSept 2006Page 31

    Diagnosis capability

    • In the event of electrical or electronic failure, control valves are mechanically returned to base position.

    • Differentiated deactivation of ABS function and/or integral function.

    • Visual display of system failure.

    • Immediate direct hydraulic connection between operating function and brake caliper (as for conventional brake system).

  • BMW MotorradSept 2006Page 32 The New ASC (Automatic Stability Control)

    “Maintain Stability”

    BMW Motorrad

    Washington, DCSept. 2006

    The UltimateRiding Machine

  • Four Wheel vs. Two Wheel Stability ControlBMW MotorradSept 2006Page 33

    Four wheel stability control on automobiles:– During hard steering or when sliding, 1 front and 1 rear brake are applied (e.g. LF/RR or RF/LR)

    Two wheel stability control on motorcycles:– During hard acceleration, before excessive tire slip, engine power is reduced

  • ASC by BMW Motorrad. Motivation for ASC (Automatic Stability Control)

    BMW MotorradSept 2006Page 34

    • Tires can only transfer drive torque within physical limits.

    • Transferable forces heavily dependent on road surface and environmental conditions (dirt, water, leaves, etc.).

    • Riding stability is negatively influenced if there is too much slip.

  • ASC by BMW Motorrad. Development of ASC.

    BMW MotorradSept 2006Page 35

    Development targets of ASC

    • Increase of driving stability.

    • Contribution to an increase in active safety.

    • Supports rider in accelerating on surfaces which are difficult to estimate or slippery.

    • To counteract a rising front wheel when accelerating.

  • ASC by BMW Motorrad. Development of ASC.

    BMW MotorradSept 2006Page 36

    ASC has not been conceived

    • to achieve the maximum possible acceleration.

    • for extreme acceleration from an extreme banking position.

    ASC cannot extend the physical stability limits of a single-track vehicle.

  • ASC by BMW Motorrad. System description ASC.

    BMW MotorradSept 2006Page 37

    ABS sensorfront wheel

    ABS sensorrear wheel

    Pressure modulatorEngine management system

    Injection valveIgnition

    Instruments

    ASC switch

  • ASC by BMW Motorrad. System description ASC.

    BMW MotorradSept 2006Page 38

    Function ASC

    • ABS sensors detect wheel rotation speeds.

    • Comparison of wheel rotational speeds gives drive slip.

    • If slip is too great, engine torque is limited by engine management system.

    • Designed for public road conditions.

    • Off-road settings can be activated for off-road use.

    • Can be deactivated for sports use.

  • ASC by BMW Motorrad. System description ASC.

    BMW MotorradSept 2006Page 39

    Torque managementE

    ng

    ine

    torq

    ue

    Ignition timing

    1st reduction stage

    2nd reduction stage

    3rd reduction stage

    “Ping”limit

    Torque-optimized ignition point

    • Torque reduction by adjustment of ignition timing.

    • If higher degree of control is required, fuel injection is suppressed.

  • ASC by BMW Motorrad. Operation and display of ASC.

    BMW MotorradSept 2006Page 40

    ASC switch on/off ASC display in instrument panel

    Display symbols:

    S

    ASC deactivated

    Off-road setting activated

    !

    ! + ASC control

  • BMW MotorradSept 2006Page 41

    Das ASC von BMW Motorrad. Zusammenfassung ASC.Thank You!

    BMW Motorrad

    The UltimateRiding Machine

    Lighting Technology for Active Safety“See and be seen”Xenon Headlamps (High Intensity Discharge)ComparisionXenon HeadlampsTire Pressure Monitoring (RDC)“Maintain Stability”Tire Pressure Monitoring (RDC) Top ViewRDCInformation / WarningsThe New Integral ABS “Maintain Stability”The new Integral ABSEvolution of ABS.The new Integral ABSDevelopment of Integral ABS.The new Integral ABSDevelopmentThe new Integral ABSComponentsThe new Integral ABS Pressure modulator.The new Integral ABS Hydraulic circuitThe new Integral ABS Hydraulic circuitThe new Integral ABSHydraulic circuitThe new Integral ABSHydraulic circuitThe new Integral ABS Hydraulic circuitThe new Integral ABS Hydraulic circuitThe new Integral ABS Hydraulic circuitThe new Integral ABS Main features of Integral ABS.The new Integral ABS Main features of Integral ABS.The new Integral ABS Integral function – brake force distribution.The new Integral ABS Integral function – brake force distribution.The new Integral ABS Integral function – brake force distribution.The new Integral ABS Integral functionThe new Integral ABS Integral function – braking on a gradient.The new Integral ABS Lift-off detection of Integral ABS.The new Integral ABS Complete self-diagnosis of Integral ABS.The new Integral ABS Complete self-diagnosis of Integral ABS.Four Wheel vs. Two Wheel Stability ControlASC by BMW Motorrad. Motivation for ASC (Automatic Stability Control)ASC by BMW Motorrad. Development of ASC.ASC by BMW Motorrad. Development of ASC.ASC by BMW Motorrad. System description ASC.ASC by BMW Motorrad. System description ASC.ASC by BMW Motorrad. System description ASC.ASC by BMW Motorrad. Operation and display of ASC.Das ASC von BMW Motorrad. Zusammenfassung ASC.