EV (Electric Vehicle) and Hybrid Drive Systems

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Comparison of Energy Use10-15 Mode

We have been developing compact, highly efficient drive systems for EVs and hybrid vehicles by combining 
our experience and know-how as a specialized maker of automatic transmissions with state-of-the-art motor 
technology.
Our EV drive system program began with the development of a four-wheel electric car in 1986 and continued 
as  Toyota  selected  our  EV  drive  system  for  the  Crown  Majesta  EV  in1993.  In  1998,  we  produced  an  EV 
system for Toyota's "e-com," an ultra-compact EV.
The  system  was  also  used  as  the  drive  system  for  a  super-compact  EV  (Coms)  sold  by  Toyota  Auto  Body 
from 2000 to 2011.

For hybrid vehicle drive systems, which have been attracting increased attention recently, we are producing 
two 2-motor hybrid systems for FF vehicles and two for FR vehicles.

AISIN  AW's  contribution  to  society  originates  in  the  development  of  forward-looking,  environmentally 
responsible automobiles. Our drive systems for EV and hybrid vehicles help reduce exhaust gases and improve 
fuel economy. 

EV (Electric Vehicle) and Hybrid Drive Systems

2.4

Energy utilization index

Gasoline-powered car

Hybrid car

EV(electric vehicle)

15

AISIN AW ENVIRONMENTAL REPORT 2012

2.Design and Development

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FF 2-motor hybrid transmission

The  Toyota  Camry  Hybrid  features  an  AW  FF  2-motor 

hybrid transmission.

The Toyota Prius, which has lower capacity than the 

Camry  Hybrid,  features  an  AW  FF  2-motor  hybrid 
transmission.

The  system  is  featured  in  the  Lexus 

GS450h,  which  was  launched  in

March  2006,  and  the  Toyota  Crown 
Hybrid, which was launched in May

2008. 

Lexus selected an AISIN AW 4WD   

hybridztransmission  featuring

improved  quietness  for  use  in  its 
flagship LS600h (available May 2007).

RWD 2-motor Hybrid Transmission / 4WD Hybrid Transmission

This 2-motor hybrid system delivers improved fuel economy without sacrificing the power and speed that are 
expected of a luxury passenger car. A double reduction design that can select from two reduction gear ratios 
for  the  drive  motor  output  shaft  enabled  a  design  that  was  compact  enough  to  be  integrated  into  existing 
RWD platforms.

This 2-motor hybrid transmission combines the advantages of series hybrid and parallel hybrid architectures to 
achieve  optimal  engine  operation  and  super-high  fuel  efficiency  through  brake  energy  recovery  and  other 
means.

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AISIN AW ENVIRONMENTAL REPORT 2012

2.Design and Development


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