DocumentCode
482862
Title
An electric assist bicycle drive with automatic continuously variable transmission
Author
Watterson, Peter A.
Author_Institution
CSIRO Materials Science and Engineering, Australia
fYear
2008
fDate
17-20 Oct. 2008
Firstpage
2992
Lastpage
2997
Abstract
An automatic hybrid bicycle drive, combining human power and electric assistance via an electronic continuously variable transmission (ldquoe-CVTrdquo), is investigated. A trial design is given for a drive combining two planetary gears and two motor/generators in the rear hub. The motors are nested coaxially and the fixed chain ratio is selected so that the motor volumes are in proportion to their rated torques. As well as requiring no gear-changing, the system should achieve high regenerative braking capability, high efficiency and low maintenance.
Keywords
electric generators; electric motors; hybrid electric vehicles; regenerative braking; variable speed gear; automatic continuously variable transmission; automatic hybrid bicycle drive; electric assist bicycle drive; electronic continuously variable transmission; planetary gears; regenerative braking; Automobiles; Bicycles; Cities and towns; Gears; Humans; Materials science and technology; Mechanical power transmission; Petroleum; Torque; Wheels;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-3826-6
Electronic_ISBN
978-7-5062-9221-4
Type
conf
Filename
4771266
Link To Document