David W. Hermance (September 27, 1947 – November 25, 2006) was an American automotive engineer called the "American father of the Prius." According to Automotive News, Hermance was considered the top American executive for alternative fuel vehicles.

David Weston Hermance was born in Logansport, Indiana to Keith Weston Hermance and Margaret "Peg" Johnstone Hermance. David Hermance earned a Bachelor of Science degree in engineering from the General Motors Institute. He joined General Motors in 1965 and served in a variety of roles in the Vehicle Emissions Laboratory from 1971 to 1985. From 1985 to 1991, Hermance served as Department Head for Durability Test Development at General Motors. He was a member of the Society of Automotive Engineers.

Toyota and hybrids

Hermance joined Toyota Technical Center (TTC) in 1991 as Senior Manager in Engine Evaluation, with responsibility for evaluating North American passenger car engines. In 1992, he was promoted to General Manager of the Powertrain Department in Gardena, California where he was responsible for the development of engine and drivetrain calibrations for the North American market. His department tested many experimental designs including TRW's "Electro-Mechanical Transmission" that became the Hybrid Electric vehicle. Archived 2014-09-08 at the Wayback Machine

At TTC, Hermance went on to become Executive Engineer for Advanced Technology Vehicles. Widely considered the most knowledgeable person in the United States on the subject of hybrid vehicles, Hermance was responsible for advanced technology vehicle communication for the North American market and advanced technology vehicle emission regulatory activities in California. He was recognized as an eloquent and persuasive spokesman, both in explaining to the public and regulators complex hybrid technology, its advantages and limitations, in lay terms, and with persuading Toyota that the American public would buy hybrid cars in large numbers only if performance and size were not sacrificed.

Interviewed in 2004, Hermance said his championing of the Prius was environmentally motivated, adding, "I'm convinced global warming is real, and that if we're not principally responsible, we're at least contributing to that." In July 2006, Hermance testified before the United States House Committee on Government Reform on the topic: "Hybrid Cars: Increasing Fuel Efficiency and Reducing Oil Dependence."[1]

Death

Hermance was an avid pilot and flew his Russian Yak-55[2] aerobatic airplane regularly in aerobatic competition at the Intermediate level.[3] Hermance died on November 25, 2006, while flying an Interavia E-3 off the California coast.[4] Engine failure is not believed to be the cause of the crash.[5] [6] [7]

References

  1. ↑ Press release (July 20, 2006). Chairman Issa to Assess Potential of Hybrid Cars. Archived 2006-10-16 at the Wayback Machine
  2. ↑ "IAC Victorville results". Archived from the original on 2007-09-28. Retrieved 2006-11-27.
  3. ↑ IAC newsletter
  4. ↑ Hermance's E-3 Check-Six.com
  5. ↑ Staff report (November 27, 2006). Toyota's top Prius executive dies in plane crash. CNNMoney.com
  6. ↑ Duke Helfand and Kurt Streeter (November 27, 2006). Man killed in plane crash called 'the American father of the Prius.' Los Angeles Times
  7. ↑ NTSB Probable Cause Report (March 31, 2008). NTSB Identification: LAX07LA047 ntsb.gov
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