HEVT

Hybrid Electric Vehicle Team of Virginia Tech

For other uses, see Hybrid Electric Vehicle Technologies.

The Hybrid Electric Vehicle Team of Virginia Tech, better known as HEVT, is a nationally recognized undergraduate student design team in the Department of Mechanical Engineering at Virginia Tech. HEVT was formed in 1994 to compete in the 1995 Hybrid Electric Vehicle (HEV) Challenge, one of the many competitions sponsored by the PNGV. Since finishing fifth out of twelve entrants that year, HEVT has competed in many similar student design competitions. Such competitions include the FutureCar Challenge, a four year series of competitions held from 1996 to 1999, where the team received two first place and two second place awards. Professor Doug Nelson has served as the chief faculty adviser since HEVT's formation.

Competitions

FutureCar

Virginia Tech’s HEVT placed first in the 1996 challenge held in Detroit. In 1996 HEVT also received awards for best workmanship, most energy efficient vehicle, lowest regulated tailpipe emissions, best use of alternative fuels, and overall best dynamic handling. The 1996 vehicle was based on a 1995 Chevrolet Lumina, donated through PNGV, which utilized a General Electric electric motor, a three cylinder Geo Metro engine, and a large battery pack. The vehicle, fueled by propane, could go 600 miles without refueling while getting between 40 and 50 mpgge (Crumbley 1996).

HEVT placed second in the 1997 competition (UW 1997).

HEVT tied with the University of Wisconsin team for first place in the 1998 FutureCar Challenge (Launey 1998). That year HEVT also won awards for best consumer acceptability, best vehicle design inspection, best acceleration, best dynamic handling, best overall engineering design, and best solo autocross (ECE News 1998).

During the 1999 FutureCar Challenge, HEVT’s entry became the first vehicle during the competition series to operate as a functional hydrogen fuel cell vehicle; at the time the vehicle was considered to be one of only a handful of operable fuel cell vehicles in the world (Lypen 1999). The fuel cell used in the vehicle was provided by the U. S. Department of Defense and carried a price tag of $250,000 USD (VT Magazine 1999). This 1999 entry was based on a 1998 Chevrolet Lumina and was designed as a series hybrid operating with the hydrogen fuel cell, a custom built lead acid battery, and an AC induction motor drivetrain. HEVT placed second in the 1999 competition.

FutureTruck

After the 1999 competition series ended, the FutureCar program was replaced with the FutureTruck program. The FutureTruck program was created to address the environmental and energy related issues created by the increased demand of SUV’s in the United States. Fifteen engineering schools from across North America were accepted as the participants in this five-year engineering program. The goal of the competition was to re-engineer a popular SUV to a lower emissions vehicle with an improvement of at least 25% in fuel economy. Each entrant vehicle also was required to meet safety, performance, and utility goals. Main sponsors of the FutureTruck program include the U.S. Department of Energy’s Office of Efficiency and Renewable Energy, General Motors, and the Ford Motor Company. The program was managed by Argonne National Laboratory's Center for Transportation Research (FutureTruck).

HEVT had only five months to complete the conversion of their 2000 FutureTruck entry vehicle based on a stock Chevy Suburban. This entry from Virginia Tech won first place at the 2000 competition which began on June 7, 2000. The 2000 FutureTruck competition was held at the General Motors Desert Proving Grounds in Mesa, Arizona.

During the 2002 competition, HEVT was awarded the MathWorks Teamwork & Leadership Award.

During the 2003 competition, HEVT was awarded the Spirit of the Challenge Award, and also received a third place award in the National Instruments Most Innovative Use of Virtual Instrumentation category.

FreedomCar

Challenge X: Crossover to Sustainable Mobility was a design competition completed in the Spring of 2008. Operation is under the FreedomCar and Vehicle Technologies Program as part of the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy’s Educational Activities.

HEVT placed Fourth in the first year of the Challenge X competition series (Sharp), Third in the second year, First in the third year, and eighth in the final year. Problems with heavy rains and the Belted Alternator Starter motor (BAS) caused the team to place lower than anticipated.

In the second year of the Challenge X competition, HEVT was the first place team (Gurski). Virginia Tech’s competition entry, the REV_LSE (Renewable Energy Vehicle, the Larsen Special Edition) is a split parallel hybrid using a Ballard Ranger 67 kW ACI rear traction motor, an 8 kW MES belted alternator starter, and a Saab 2.0 L Flex Fuel SI engine running on E85 – an ethanol/gas blend. Virginia Tech also won first place in lowest well-to-wheels petroleum energy usage, with an overall reduction of petroleum consumption of 74 percent over the stock vehicle, best written technical reports, lowest regulated tailpipe emissions, and lowest time braking and handling (Challenge X).

EcoCAR

EcoCAR: the NeXt Challenge competition is HEVT's current design competition. It is a three year competition, unlike challenge X which was a four year competition. The following is cut from the EcoCAR website:

"EcoCAR seeks to advance the level of vehicle technology capable of reducing petroleum consumption and greenhouse gas (GHG) emissions while demonstrating the real-world performance of a range of technology options."

This is the main goal of the EcoCAR competition. The car used is a stock 2009 Saturn Vue XE. The stock vehicle comes equipped with a 2.4L 4 cylinder engine mated to a 4 speed 4t45 automatic transmission.

The Current design being built by HEVT is a 2.4L E85 flexfuel engine coupled to a 4T45 hybrid transmission. On the rear axle HEVT will implement an electric motor mounted on a modifiyed rear subframe to allow an all electric propulsion mode for about 45 miles. After this charge depleting range of 45 miles is over the engine will start and the vehicle will act like a conventional mild hybrid.

In 2009 HEVT placed 6th overall in the design year of competition. Which focused on hardware-in-the-loop, modeling of the design, and creating predicitions of performance and fuel economy.

Notes

The main facilities for HEVT are located on the Virginia Tech campus in the Ware Lab. HEVT consistently participates in industry sponsored design events and is committed to the development and implementation of advanced vehicle technologies leading to green transportation. The team is currently competing in the first year of Ecocar.

References

• Challenge X. "2006 Competition Results". Argonne National Laboratories. Retrieved 2006-11-24. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
• Crumbley, Liz (1996-07-25). "Virginia Tech Spectrum, July 25, 1996". Office of the University Relations of Virginia Tech. Retrieved 2006-11-25. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
• ECE News (1998-09). "HEV Team Places 1st in FutureCar Challenge". ECE Connection. Retrieved 2006-11-25. {{cite web}}: Check date values in: |date= (help); Cite has empty unknown parameter: |coauthors= (help)
• FutureTruck. "FutureTruck". Transportation Technology R&D Center, Argonne National Laboratory. Retrieved 2006-11-25. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
• Gurski, Stephen. "Virginia Tech Takes Top Honors in Second-Year Challenge X Competition". Argonne National Laboratories. Retrieved 2006-11-24. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
• Launey, Shelly (1998). "FutureCar 1998, The Pathway to Tomorrow's Vehicle" (PDF). Argonne National Laboratory. Retrieved 2006-11-25. {{cite web}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
• Lypen, John (1999-07). "1999 FutureCar Challenge". Motor magazine. Retrieved 2006-11-25. {{cite web}}: Check date values in: |date= (help); Cite has empty unknown parameter: |coauthors= (help)
• Sharp, Randy (2005-07-15). "Challenge X: Year One Results". Argonne National Laboratories. Retrieved 2006-11-24. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
• UW Engineering (1997-06-16). "UW's 'FutureCow' Places 3rd in National Competition". University of Wisconsin-Madison. Retrieved 2006-11-25. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
• VT Magazine (Fall 1999). "Tech wins second in FutureCar challenge". Virginia Tech Magazine. Retrieved 2006-11-25. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
• EcoCAR: The NeXt competition (Fall 2008). "EcoCAR". EcoCAR. Retrieved 2008-10-01. {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)

External links

• Hybrid Electric Vehicle Team
• Virginia Tech's Department of Mechanical Engineering
• Virginia Tech Ware Lab