TOYOTA HYBRID SYSTEM EV WORLD.COM(丰田混合动力系统EV WORLD.COM).pdf
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TOYOTA HYBRID SYSTEM
Contents
Introduction 1
What is a Hybrid System ? 2
Three Objectives of THS II Development 4
How the THS II System Works 5
High-voltage systems—motor and generator 6
Power Control Unit, Battery and Regenerative Braking System 8
Hybrid Transmission 10
Engine 12
System Control 14
Output Enhancement 18
In-house Development and Production 19
Specifications of New Hybrid System 20
The new Prius features THS II, Toyota’s next-generation hibrid technology
Introduction
New levels of environmental power performance compatibility based on the concept of
Hybrid Synergy Drive
At the 2003 New York Auto Show, TMC President Cho unveiled the
all-new Prius with THS II, a “Hybrid Synergy Drive” concept that delivers
both higher power and greater fuel economy than the previous Prius.
In search of the ultimate eco-car
Toyota’s mission has always been to provide clean and safe products.
Thus, the company has positioned the environment as one of its most
important issues and has been working toward creating a prosperous
society and a world that is comfortable to live in. With this goal in mind,
Toyota has been actively developing various new technologies from the
perspective of achieving energy security and diversifying energy sources,
which is necessitated by the dwindling supply of petroleum resources.
For example, in motive power sources for automobiles alone, we have
been continuously improving conventional engines and have developed
and commercialized lean-burn gasoline engines, direct injection
gasoline engines and common rail direct-injection diesel engines, Toyota Hybrid System II (THS II)
etc. We have also been modifying engines so that they can use alternative
fuels, such as compressed natural gas (CNG), instead of gasoline or light oil, and have been installing these engines in commerci
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