Candidate Projects

1. Candidate Projects • E-CVT (sign IP Agreement) • Use the same idea for fix variable transmission (100 : 1) • Omni Wheels • Telescoping Pole

2. Continuous Variable Transmission (CVT) Jerry Tang - Elite

3. E-CVT Principle B • A is rotating while it is revolving alone circle B • A rotation speed is R/r -1 or (R-r)/r • How can we make A revolve along circle B? This is E-CVT C R A r X X

4. D’ D’ D’ D’ D’ D’ D’ D’ D’ C’ C’ C’ C’ C’ C’ C’ C’ C’ A’ A’ A’ A’ A’ A’ A’ A’ A’ B’ B’ B’ B’ B’ B’ B’ B’ B’ Example No Slippage R = 2” Theta = Pi/4 r = 1” Gear Ratio = R/r -1 = 2/1 -1 = 1:1 C D B A A D B C

5. Gear Ratio

6. E-CVT Prototypes 3) Fixed Cam 1) Vertical Piston 2) Horizontal Piston 4) Floating Gear 5) Driven Gear 6) Sliding Cam

7. E-CVT Current Prototypes 2) Horizontal Piston 1) Vertical Piston 3) Floating Gear 4) Driven Gear

8. E-CVT Output Shaft 3) Pinned X-Y Joint 2) Slotted X-Y Joint 1) U-Joint 5) Inner Gear Output 6) Outer Gear Output 4) Flexible Shaft

9. X-Y Joint

10. The 2nd Generation of the E-CVT Prototype Project Based on the resource, time, availability, and course guidelines, work with students to define and achieve the project objectives according to the following: • Understand CVT and E-CVT. • Determine/Analyze the constraints of the E-CVT. For instance: a. Is input and output reversible? b. O/I ratio range. c. Output torque range. d. How can the O/I ratio be a function of the input torque (auto shifting)? • Determine the efficiency of the E-CVT. • Determine the E-CVT component dependencies in term of O/I ratio, O/I torque, etc. • Model, simulate, design, and produce the prototype if applicable. This list can be grown and shrunk as necessary.

11. Backup

12. Vertical Pistons

13. Drawing of Floating Gear

14. Drawing of Driven Gears

15. Horizontal Piston

16. D’ D’ D’ D’ D’ D’ D’ D’ C’ C’ C’ C’ C’ C’ C’ C’ A’ A’ A’ A’ A’ A’ A’ A’ B’ B’ B’ B’ B’ B’ B’ B’ Example No Slippage R = 2” Theta = Pi/4 r = 1” Gear Ratio = R/r -1 = 2/1 -1 = 1:1 C D B A A D B C

17. Gear Ratio