Explanation of motorcycle AFS Agenda 10a The Session

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Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008

Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008 60 th JAPAN AUTOMOBILE STANDARDS INTERNATIONALIZATION CENTER AFS : Adaptive Front-lighting System ØPurpose This system improves the visibility of motorcycle which is cornering at the nighttime. ØFunctions This system changes the illumination area of headlamp automatically in according with the bank angle of motorcycle.

Agenda 10(a) The Session of GRE 01 -03 October 2008 Explanation of motorcycle AFS

Agenda 10(a) The Session of GRE 01 -03 October 2008 Explanation of motorcycle AFS 60 th JAPAN AUTOMOBILE STANDARDS INTERNATIONALIZATION CENTER v: vehicle speed ω:yaw rate δ:Headlamp adjustment angle f:centrifugal force Mg:weight f:centrifugal force δ:bank angle (equal to headlamp horizontal inclination adjustment angle) Mg : weight How to calculate bank angle

Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008

Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008 60 th JAPAN AUTOMOBILE STANDARDS INTERNATIONALIZATION CENTER Headlamp unit Vehicle speed sensor ECU Angle sensor (potentiometer) motor System construction diagram Yaw rate sensor

Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008

Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008 60 th JAPAN AUTOMOBILE STANDARDS INTERNATIONALIZATION CENTER Illumination area of conventional headlamp Illumination area of AFS headlamp Expanded illumination area

Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008

Explanation of motorcycle AFS Agenda 10(a) The Session of GRE 01 -03 October 2008 60 th JAPAN AUTOMOBILE STANDARDS INTERNATIONALIZATION CENTER Demonstration course We demonstrate how the AFS works when the motorcycle runs along these corners. START