1. Scooter CVT Structure Scooter CVT Structure Instructor : Instructor : Ru - Li Lin Team List : Syuan-Kun Jhuo 49912016 Jheng-Yang Li 49912075 Jheng-Yang Li 49912075

2. Outlines Preface CVT Introduction How does CVT work CVT compare ConclusionsReference

3. Preface Motorcycle development history Motorcycle species introduced Motorcycle major tectonic

4. History The world's first locomotive In 1769 by the French Nicholas Cugnot the use of Steam engine composition In 1885 Germany engineer Wilhelm Daimler Gottlieb the one gasoline engine Installed wooden bicycle

5. Species Scooter Land Rover Pedicab Electric cars

6. Major tectonic Transmission system Power Systems Brake Systems Cooling Systems Steering System Suspension

7. Motorcycle transmission system Continuously Variable Transmission Traditional transmission

8. CVT Introduction CVT Introduction CVT is (Continuously Variable Transmission) shorthand. CVT is (Continuously Variable Transmission) shorthand. Means uninterrupted transmission mechanism Commonly used in car or scooter motorcycle gear mechanism

9. Structure Front pulley Pulley Blade Weights Rollers Drive belt Rear Pulley Big Spring Clutch

10. Front pulley Material : Aluminum Function: Driving wheel and shift mechanism cited rang cvt

11. Pulley Blade Material : Aluminum Function: Combined with the Front pulley grip belt, with a cooling function in cvt

12. Weights Rollers Material : Copper or Aluminum Function: Located behind the disk drive, it weighs decision cvt gear speed

13. Drive belt Material :Rubber conjugates Function: Medium power transmission shifting mechanism

14. Rear Pulley Material :Steel Function:Speed ​​ function for moving the front Pulley opposite

15. Big Spring Material :Steel or Chromium-molybdenum alloy Function:Control Rear Pulley opened timing similar to Weights Rollers

16. Clutch Material : Cast iron and Aluminum Function: Control the timing of transmission and gearbox division

17. How does CVT work The CVT works upon the ratio of the diameter of the front and rear drive belt pulleys. Both front and rear pulleys are an assembly of moving plates.

18. Behind the moving plate of the front pulley, there are weighted rollers by centrifugal force, makes Rear Pulley produce opening and closing change. Drive belt will follow the opening and closing of the Pulleys and do change positions to achieve the effect of the automatic transmission

19. CVT compare ScooterAdvantage 1. Simple structure 2. Easy maintenance 3. Smooth shifting process ScooterShortcoming 1. Transmission does not really 2. Transmission and high temperature 3. Lower life expectancy, requiring regular maintenance

20. Conclusions This way, the ratio between the two pulleys is changed and therefore, the speed ratio between the engine and rear wheel is changed.

21. Reference http://www.bando.com.tw/product_description.php?PNo=151 Http://modernvespa.com/forum/wiki-cvt-principles-how-it-works-how- to-improve-it- Http://modernvespa.com/forum/wiki-cvt-principles-how-it-works-how- to-improve-it- http://www.recyclesources.com.tw/usersite/chmchm_product_showli st.html?sysid=23483&option=product&task=showlist&msgtype=sell& id=4636 http://www.recyclesources.com.tw/usersite/chmchm_product_showli st.html?sysid=23483&option=product&task=showlist&msgtype=sell& id=4636http://www.buybike.com.tw/web/SG?pageID=26494 The Images from google query Video https://www.youtube.com/watch?v=YNCMUZSQ0PY https://www.youtube.com/watch?v=YNCMUZSQ0PY

22. Thank you