The Good Old Days Of Toyota Prius

1.
Toyota Prius (First generation)
The Toyota Prius was the world's first mass-produced
electric petrol hybrid vehicle in the world. The national
launch at the end of 1997 marked the culmination of
a concerted five-year effort by Toyota Motor
Corporation to develop and bring to the market a
practical and low-emission family car.
Contrary to popular belief, Toyota has not developed
the concept of a hybrid vehicle. The combustion
engine and
electric motor vehicles already existed in 1898.
However, Toyota was the first manufacturer to
overcome the many technical and engineering
problems necessary to drive this power-train to mass
production. The focus was on the need to adapt the
life of the high voltage battery to that of the other
components of the vehicle.
At the heart of the new Prius (XW10 chassis) was the
revolutionary Toyota Hybrid System, an integrated
package whose mechanical components could still fit
into a full-size engine compartment. The system was
powered by a 1.5-liter four-cylinder NZ-series engine
that performed a simulated Atkinson combustion
cycle to achieve optimal fuel efficiency. It was
connected to a compact and high-torque electric drive
motor and a separate generator. The last component
was a powerful nickel metal hydride battery hidden
behind the rear seats.
2.
Toyota Prius (Second generation)
Building on this, the next-generation Prius (XW20
chassis) has been completely redesigned to capitalize
on Toyota's continued efforts to develop hybrid
technology. This progressive successor was launched
on January 2, 2004 with 530 new patents and set
standards at both ends of the service spectrum. It's
faster and more powerful, but cleaner and more
economical than ever.
It was bigger than the outbound car - now between
Corolla and Camry - and had adopted a distinctive
five-door "Kammback" design that helped it race
through the atmosphere with a drag coefficient of
only 0.26 Cd. Beneath this sleek exterior was a
lightweight but enormously powerful body.
The new Toyota Prius also introduced the second
generation hybrid drive, now known as Hybrid
Synergy Drive (HSD). The aim of this system was to
restore the balance between gasoline and electric
motors. Instead of relying on the gasoline engine for
peak performance, HSD's electric motor as an
accessory has increased the range and use of the
electric motor for greater power output. In fact, it
now offered more torque from zero to 1,200 rpm than
a modern V6 diesel. The charge for this engine came
from an improved battery pack with fewer cells and
less weight, but a higher power density.
3.
Toyota Prius (Third generation)
It looks like the next Prius (XW30 chassis) has taken
the benefits of Toyota's world-leading hybrid
technology to an even higher level. The new Prius,
considered the most advanced production car on the
market, promises better fuel economy and
performance, as well as reduced life cycle emissions
from manufacturing to final disposal.
It set new standards for hybrid vehicles with a
system output of 134 hp (plus 22 percent), a
combined fuel economy of 72.4 mpg (plus 10 percent)
and a reduction in CO2 emissions to just 89 g / km (a
decrease of 14 percent).
All of this was achieved by seemingly
counterproductive methods - a larger 1.8-litre Atkinson
gasoline engine and a hybrid synergy propulsion
system that was significantly smaller and lighter than
before. In fact, 90 percent of the hybrid power train
components were new.
By installing a larger displacement ZR engine, the
Prius could achieve better fuel economy at lower
revolutions - 300 rpm less at a cruising speed of 120
km / h. Meanwhile, a new exhaust gas re-circulation
function has kept the operating temperatures under
control so that the engine is less likely to require
wasteful fuel enrichment to keep the catalysts cool.
4.
Toyota Prius (Fourth generation)
In each of its three generations, Prius has cut CO2
emissions by an average of 10 percent. Therefore,
Toyota's challenge was to continue and hopefully
accelerate this rate of improvement in the fourth-
generation car.
With this in mind, the new Prius features a lighter,
more compact and more efficient hybrid power-train
that offers lower fuel consumption, lower emissions
and lower costs. The platform is based on the Toyota
New Global Architecture, which is designed to
improve dynamic performance through a lower
center of gravity and a stronger structure.
Toyota has been known for its standard
features....What do you think

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