Development of New-Generation Hybrid System THS II - Drastic Improvement of Power Performance and Fuel Economy

Koichiro Muta, Makoto Yamazaki, Junji Tokieda

SAE technical papers on CD-ROM/SAE technical paper series · 2004 · 256 citations · 1 references

Concepts

TL;DR

Toyota Hybrid System (THS), a gasoline‑engine and electric‑motor powertrain, debuted in December 1997 and evolved further in 2003. This study introduces THS II, the next‑generation Toyota Hybrid System deployed on the new Prius, and explains its drastic gains in power performance and fuel economy while meeting the ATPZEV emission standard. The original THS became the world’s first mass‑produced hybrid, selling over 120,000 units, and THS II delivered drastic gains in power performance and fuel economy while meeting the ATPZEV emission standard.

Abstract

Toyota Hybrid System (THS), the powertrain that combines a gasoline engine and an electric motor was first introduced in December 1997. It became the first mass-produced hybrid passenger vehicle in the world, gaining a reputation as a highly innovative vehicle, and its cumulative worldwide sales have exceeded 120,000 units. In 2003, THS had a further evolution. The new-generation Toyota Hybrid System (THS II) would be introduced on the new Prius. This report shall explain THS II, which achieved drastic improvements in power performance and fuel economy, while securing the most stringent emission standard Advanced Technology Partial Zero Emission Vehicle (ATPZEV).

References

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