slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Hydraulic Hybrid Vehicle PowerPoint Presentation
Download Presentation
Hydraulic Hybrid Vehicle

Loading in 2 Seconds...

play fullscreen
1 / 24

Hydraulic Hybrid Vehicle - PowerPoint PPT Presentation


  • 133 Views
  • Uploaded on

Members: Kevin Alexander Phillip Bacon Tyler Degen Brandon Diegel Nick Hemenway Luke Jackson Christian L’Orange Grant Mattive Dean Simpson. Advisors: Dr. Kirkpatrick, CSU Dr. Guy Babbitt, Czero Inc. Mr. Chris Turner, Czero Inc. Hydraulic Hybrid Vehicle. Outline.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Hydraulic Hybrid Vehicle' - luke


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
hydraulic hybrid vehicle

Members:

Kevin Alexander

Phillip Bacon

Tyler Degen

Brandon Diegel

Nick Hemenway

Luke Jackson

Christian L’Orange

Grant Mattive

Dean Simpson

Advisors:

Dr. Kirkpatrick, CSU

Dr. Guy Babbitt, Czero Inc.

Mr. Chris Turner, Czero Inc.

Hydraulic Hybrid Vehicle

outline
Outline
  • Objectives and Constraints
    • Scope Changes
  • Test Skid Progress
  • Component Selection
    • Accumulator
    • Pump/Motor
  • Modeling Progress
  • Current Schedule
  • Budget
  • Conclusions
objectives and constraints
Objectives and Constraints
  • Design components to retrofit existing vehicles
  • Operational Test Skid by Dec. 2007
  • Running prototype vehicle by April 2008
  • Payback period: less than 2 years through fuel

savings and reduced maintenance cost

  • Major components sourced from commercial

manufacturers

slide6

Scope Changes

  • Test Skid
    • Test skid from University of Wisconsin, Madison
    • Initial set-up: Stock configuration at 2000psi
    • Final set-up: Sized components at 5000psi
  • Marketing
    • Partnered with CSU College of Business GSSE
  • Controls
    • Partnered with CSU team of electrical engineers
slide7

Test Skid Progress

  • Acquired test skid from University of Wisconsin
  • Installed at the EECL
  • Flywheel-to-pump coupler ordered
  • Flywheel FEA conducted
  • EECL donated hydraulic power supply
  • Installed HPS near test skid
  • Evaluated condition of components
  • HPS is currently operational
flywheel selection
Flywheel Selection
  • Sizing flywheel to simulate reflected inertia of bus
  • Options considered:

Clark flywheel at EECL (5 ft diameter)

Trainwheel (3 ft diameter)

University of Wisconsin Flywheel (2 ft diameter)

In house fabricated flywheel

  • Main concern is safety
flywheel selection1
Flywheel Selection

N=

Where:

N-Max safe speed

C-.9 for variable speed

A-1.5 for disk type (no spokes)

M-2.75 for plate/forged steel (60ksi)

E-1.0 for solid rim (no bolted joints)

K- ~2000 for thickness of 5% outside diameter

D- Outside diameter in feet

Taken from Machinery’s Handbook

flywheel selection2
Flywheel Selection
  • New Constraint: If building own test stand, moment of inertia must be under 4 kg-m2 for safety purposes
  • Decided to use UW test stand since it was professionally designed and best utilization of tight time frame
  • Will still allow for sufficient modeling capabilities when inertia rings are designed and added
flywheel analysis
Flywheel Analysis
  • Flywheel modeled at 1800rpm and 3500rpm
  • Centrifugal loading applied to model

Max Stress: 3.30ksi

Max Stress: 13.65ksi

3500rpm Centrifugal load

1800rpm Centrifugal load

accumulator selection
Accumulator Selection

10 Gallon

15 Gallon

accumulator selection1
Accumulator Selection
  • 15 gallon capacity
  • Suitable for testing equipment
  • Bladder type accumulator
    • Bladder material Hydrin (desirable temperature and cost properties)
  • Steel construction
    • Best performance to cost ratio
  • Top repairable
    • Desirable for ease of maintenance

Accumulator considerations

pump motor selection
Pump/Motor Selection

Size of P/M dependant on acceleration path

pump motor selection1
Pump/Motor Selection
  • Variable Displacement Axial Piston Pump/Motor
  • Through Shaft Swash Plate type
  • No extra coupling gearbox to mount to vehicle
  • Bosch Rexroth A11VL0
    • Displacement- 145 cm^3/rev
    • Maximum Pressure of 400 Bar
    • Max Speed of 2500 rpm
    • 73 kg
modeling progress
Modeling Progress
  • Simulink models
    • Drive cycle: fuel economy, accelerating and braking capabilities
    • Hydraulic model: component sizing, pressure considerations
  • Hysan models
    • Hydraulic schematic: pressure considerations, line losses, and modes of failure
budget
Budget
  • Components needed for test skid
    • Low and High Pressure Accumulator ~$6000
    • Final set-up pump/motor ~$7000
  • Donations
    • Talked to City of Fort Collins for a donated vehicle
    • In talks with hydraulic suppliers for possible donations
questions
Questions

Special Thanks To:

Dr. Kirkpatrick (Advisor-Colorado State University)

Dr Guy Babbitt (Advisor-Czero Inc.)

Chris Turner (Advisor-Czero Inc.)

Staff and Employees of The Engines and Energy Conversion Laboratory

Hysan Modeling