university of alabama center for advanced vehicle technologies the center for advanced vehicle...
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University of Alabama Center for Advanced Vehicle Technologies
The Center for Advanced Vehicle
Technologieshttp://www.me.ua.edu/cavt/
University of Alabama Center for Advanced Vehicle Technologies
Vision of the CAVTPromote the development of efficient, safe,
secure, economical, durable, comfortable, user-friendly and environmentally-conscious vehicles for meeting the transportation needs of America
through discovery, research and education.
University of Alabama Center for Advanced Vehicle Technologies
CAVT Technical Thrusts
• Fuel cells
• NVH and controls
• Materials
• Manufacturing processes
• Hydrogen vehicle safety
• IC engines- emissions, fuels, novel combustion
• Hybrid electric vehicles (IC engine/electric motor)
Award winning Ballard/UA/ Freightliner APU project
University of Alabama Center for Advanced Vehicle Technologies
Partnering & Research InitiationCAVT supports vehicle
engineering research needs for Alabama manufacturers and the
Southeast- we’ll travel!
Mercedes M-Class, Hyundai Sonata, Honda Odyssey- made in Alabama!
University of Alabama Center for Advanced Vehicle Technologies
Fuel Cell Research @UA
PEMFC SOFC
1. Hydrogen Production2. N-Based Energy
Systems3. Electrolyte Membrane4. Catalyst & Electrode 5. Bipolar/End Plates6. Heat Transfer7. Vibration Analysis
1. Electrode Materials
2. Electrolyte Material
3. Interconnects
Modeling and SystemIntegration
DOT/CAVT, DOE/EPSCoRArgonne, Ballard, Honda
UA Departments
• Chemical Eng.• Metallurgical
Eng.• Mechanical
Eng.• Chemistry
EPA/GCHSRC, NSF
Fuel Cell Research
University of Alabama Center for Advanced Vehicle Technologies
IC Engines Research • Venerable IC engines program-
focus is emissions, alternative fuels and diesel engines.
• Current research focuses on alternative fuels, hybrid electric vehicles, cold start emissions, and engine optimization for hybrid electric vehicles.
University of Alabama Center for Advanced Vehicle Technologies
Structural Acoustics Lab
Ballard/UA/Freightliner award-winning fuel cell APU project
• Detailed spatial vibration measurements
• Vibration isolation, structural damping
• Source location, directivity, and other acoustic characterizations
• Active control analysis, implementation
• Structural vibration and acoustic radiation modeling
University of Alabama Center for Advanced Vehicle Technologies
Fuel Cell Safety & Failure Modes in Light Duty Vehicles
Fuel Cell Power Unit
Lumped ParameterLumped ParameterModelingModeling
Subcomponents
Vehicle Frame
FCPU
• Finite ElementFinite Element• Identify Critical Identify Critical ComponentsComponents• Hydrogen Leakage Hydrogen Leakage
IssuesIssues• ID Failure ModesID Failure Modes
Critical Loads, Paths,Critical Loads, Paths, and Response Levelsand Response Levels
H2
SimulationsSimulations ExperimentalExperimentalEffortsEfforts
023CrashImpulse
RoadResponse
GoalsExamine crashworthiness and operational
safety issues of fuel cells in light duty vehicle applications through modeling and component
testing.
BenefitsA better understanding of the safety issues and
failure modes of light duty vehicles incorporating fuel cells will provide information
critical to public policy for transportation.
University of Alabama Center for Advanced Vehicle Technologies
Hydrogen Tank Integrity Studies
(a) Pre-stress @ 45 MPa
(b) Pre-stress @ 45 MPa
(c) Operating Pressure 35 MPa w/ Pre-stress
(d) Operating Pressure 35 MPa w/o Pre-stress
University of Alabama Center for Advanced Vehicle Technologies
H2 Dispersion / Ignition in Enclosures
Dispersion behavior of H2 in a horizontal channel
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Objectives• Characterize H2 dispersion behavior
in production vehicle enclosures • Identify hydrogen ignition conditions
and characterize ignition behavior• Examine mitigate methods
Motivation• Small leaks in H2 delivery systems may
ignite, endangering vehicle occupants• Need to understand dispersion &
ignition behavior
Methods• Computational Fluid Dynamics• Experimental Measurements of
Hydrogen Concentrations & Ignition Behavior
Computational Grid to model automobile interior