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Hydraulic Hybrid Team

Hydraulic Hybrid Team. Team: Kevin Alexander- Market and Test skid Phillip Bacon- Accumulators Tyler Degen- Accumulators Brandon Diegel- Pump/Motor Nick Hemenway- Markets and Business Luke Jackson- Valves and Control Systems Christian L’Orange- Computer Modeling and Analysis

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Hydraulic Hybrid Team

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  1. Hydraulic Hybrid Team Team: Kevin Alexander- Market and Test skid Phillip Bacon- Accumulators Tyler Degen- Accumulators Brandon Diegel- Pump/Motor Nick Hemenway- Markets and Business Luke Jackson- Valves and Control Systems Christian L’Orange- Computer Modeling and Analysis Grant Mattive- Pump/Motor Dean Simpson- Computer Modeling and Analysis Advisors: Dr. Allan Kirkpatrick, CSU Dr. Guy Babbitt, Czero Solutions, Inc. Chris Turner, Czero Solutions, Inc.

  2. Presentation Outline • Hydraulic Hybrid Overview • Project Problem Statement • Objectives and Constraints • Market Opportunities • Components and Research Courtesy of viaggiaresempre.it Courtesy of Linde Pumps

  3. Hydraulic Hybrid Overview • Utilizes regenerative braking • Reduces fuel consumption and emissions • High energy and power density • Optimal for frequent stop and go driving of large vehicles • Configurations Investigated: Series and Parallel • Current development based in US and Europe

  4. Energy Comparisons Courtesy of Parker.com Courtesy of HHV system panel

  5. Series Hybrid High Pressure 5000 psi Pump/Motor Low Pressure Pump

  6. Parallel Hybrid High Pressure 5000 psi Driveshaft Low Pressure Pump/Motor

  7. Problem Statement Design a hydraulic hybrid vehicle that will: • Increase vehicle fuel economy • through regenerative braking • Be adaptable to multiple • vehicles with only component • resizing • Reduce vehicle emissions • Reduce vehicle maintenance • costs Courtesy of ourworldtravels.com

  8. Objectives and Constraints • Objectives • Increased fuel economy of at • least 20% • Minimal change in vehicle drivability • Design components to retrofit existing • vehicles • Complete Test Skid by Dec. 2007 • Running prototype vehicle by • April 2008 Courtesy of ITDP

  9. Objectives and Constraints • Constraints • New components cannot add more than 10% of original • vehicle mass to the vehicle • Payback period: less than 2 years through fuel savings • and reduced maintenance cost • Major components sourced from commercial • manufacturers • Must have an expected life span of at least 10 years

  10. Market Decisions • Population Density • Refinement expectations of the vehicle • Heavy reliance on bus system • Find size ranges most widely used in many countries • Most common chassis layout • Short bus routes or stop and go drive cycles

  11. Target Vehicle and Countries • Focus on India, China, and Singapore • Design will be based around 7000kg GVW • Typical of Class 4 vehicle • Initial design will focus on front engine layout • Simplistic control system to minimize cost

  12. Major Components Pump/Motor • Functions as both a pump and a • motor (P/M) • Regenerative mode: P/M pumps • fluid • Acceleration: P/M is driven by fluid • Many types of pumps and motors, • but only a few that fit our application • Needs to be low speed, high torque, • and variable displacement

  13. Major Components • Axial Piston Pump – Odd number of pistons situated parallel to each other rotating around a common shaft • Variable Displacement – Displacement can be adjusted to increase or decrease the amount of fluid pumped per revolution • Torque=Pressure*Displacement Bent Axis Piston Pump Swash Plate Pump

  14. Major Components Bent Axis Variable Displacement Pump Example 0 deg 22 deg 45 deg www.epa.gov/otaq/technology

  15. Major Components Accumulators • An energy storage device • Two main types: Gas charged and • spring loaded • During braking, hydraulic fluid compresses • an inert gas or spring to store energy • Stored energy is then released back to the • system when needed • Main types of gas accumulators are • bladder, diaphragm, and piston Bladder Type Accumulator www.Liquid-dynamics.com/animations

  16. Major Components Accumulators Piston Type www.Liquid-dynamics.com/animations Diaphragm Type www.Liquid-dynamics.com/animations

  17. System Modeling • Modeling Simulates System Performance • Pump efficiencies • Operating pressures • Flow rates • Control system analysis • Valve control • Advantages • Changes in component size/operating conditions can quickly • be analyzed • Vehicle drive cycle simulation • System control integration • Mototron

  18. System Modeling • Modeling Software • Matlab/Simulink R2007a • Matlab/Simhydraulic • Hysan

  19. Summary • Recapture energy lost through braking • Take advantage of wide and varied potential markets • Seeking to fill retrofit applications • Creating a dynamic computer simulation of system • Designing a test bed model for system performance analysis • Install and test system in vehicle • Special Thanks To: • Dr. Kirkpatrick (Advisor-Colorado State University) • Dr Guy Babbitt (Advisor-Czero Solutions) • Chris Turner (Advisor-Czero Solutions) • Staff and Employees of The Engines and Energy Conversion Laboratory • Hysan Modeling

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