1 / 20

Fluid-Power Bike for Racing Challenges: Purdue University Northwest Project

This presentation showcases the design process and modifications made to a fluid-power bike created by Purdue University Northwest students for racing competitions. The team addressed challenges, circuit designs, testing process, and lessons learned.

todm
Download Presentation

Fluid-Power Bike for Racing Challenges: Purdue University Northwest Project

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Final Presentation Purdue University Northwest Team Rick Rickerson & Prof. Ali 4/2/18

  2. Photo of Vehicle • Include a photo in this presentation. • Also send the photo as an attachment when submitting the presentation.

  3. 2018-19 PNW Team Students • Jacob Deakin • Mohamed Nasr • Charles Badillo MET • Brian Long • Sean Slouber • Ali Alsultan ECET Advisors • Prof. Ali • Prof. Higley • Rick Rickerson

  4. Problem Statement • A working vehicle must be created that converts mechanical/human power to fluid power to move a bike for 3 different races while adhering to all the NFPA competition rules.

  5. Midway Review • Extended the back wheel 6” for accumulator • Add a clamp to make the pump more adjustable • Gear up the pedals to obtain a higher RPM • Design a custom reservoir for the bike • Design an adjustable clamp for the accumulator • Motor/ Pump mounts made for adjustability • Ensure design is balanced

  6. Changes from Midway Review • No charging from low pressure • Using a belt and chain for main pump • Welding regenerative pump bracket • Using solenoids instead of ball valves • Used more compact line bodies • Modified brackets (motor, reservoir)

  7. Changes from Midway Review • Making back wheel adjustable for chain tension and alignment • Switched to stainless steel hoses • Changed gear ratio • Installed two downpipes for returns • Added a baffle to the reservoir

  8. Midway review • Original frame FEA stress • 6 forces loaded to frame

  9. Changes Because of Testing • Elimination of 3-way ball valve from circuit • Regenerative braking gear ratio • Added a chain tensioner (regen braking) • Nitrogen precharge for accumulator

  10. Midway Circuit Design • .54 in^3/ rev motor • .5 in^3/ rev main pump • .4 in^3/ rev regen pump • 2 3-way ball valves • 1 quart accumulator • 1 pressure relief valve • 1 manifold • 3 check valves • 1 pressure gauge

  11. Final Circuit Design • .54 in^3/ rev motor • .5 in^3/ rev main pump • .4 in^3/ rev regen. pump • 2 solenoids • 1 quart accumulator • 1 pressure relief valve • 1 manifold • 2 check valves • 1 pressure gauge

  12. Direct Drive Circuit • Pulls fluid from reservoir with pump • Fluid then powers motor and returns back to reservoir

  13. Regenerative Braking Circuit • Uses regenerative pump to push fluid into accumulator from reservoir by opening solenoid • Charges accumulator to store energy

  14. Discharge Circuit • Open discharge solenoid • Fluid then flows from accumulator to power the motor • Fluid then returns to reservoir

  15. Solidworks Design

  16. Constructing the Bike

  17. Constructing the Bike

  18. Testing the Bike https://youtu.be/t-fn6ncMSuE

  19. Lessons Learned • Hydraulic circuit design • Time management with ordering parts • Teamwork • The different types of fittings • Problem solving

  20. Questions & Comments

More Related