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.