Nissan將推出"E-Power"系統的車輛
這套動力系統同樣有內燃機、電動馬達及電池
但是與油電車不同的是內燃機不會提供動力給輪胎
只是把內燃機當成純粹幫電池充電的工具，動力部分完全由馬達來提供
而電池的部分將會比現在的Leaf來的更小(電池更小又靠純電驅動，電池壽命會比較短)
所以這是一輛不需要插頭的電動車。
個人覺得這套系統是在走回頭路了
論效能、噪音、震動比不上純電動車
燃油車引擎那種給駕駛的直接的回饋感覺也不存在
機構也比目前的電動車跟純燃油車來的複雜
不太看好這套系統
Nissan還是把Leaf搞好一點吧，續航現在新款式美國環保署公布也才172km
雖說下一代號稱會有超過300km的續航力，但要推出後才算數
把資源跟人力分去做另一套新的系統給通勤小車用有點浪費了
倒不如把Leaf做好，甚至拿來發展中大型電動房車或SUV
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https://goo.gl/fVQGFV
While EV enthusiasts are waiting for Nissan to announce its next
generation LEAF, or whatever they will call their upcoming new
electric vehicle with a 60 kWh battery pack, it looks like the
Japanese automaker is now taking a huge and confusing step backward
in electrification by introducing a gas-powered range extender called
‘E-Power’ without a plug?!
Of course, Nissan presented the new product this week as “moving
forward its electrification strategy”, but it looks like it was
designed by the Koch brothers.
The gas-powered range extender is nothing new. BMW has been offering
one in the i3 for quite some time now. They basically make an
over-complicated drivetrain to remove the dreaded “range anxiety”,
but as James May, who recently got rid of his BMW i3 with range
extender in order to go full electric, said: “it’s a form of
cowardice”.
Here’s the full quote from a recent interview:
“What I’ve actually ordered a new car, haven’t I? I’ve got an i3,
but I ordered a new i3, because it has an improved battery. And I’ve
gone for no range extender. I did have that before, but I felt that
was a form of cowardice, so I’ve abandoned that.”
The idea behind a range extender is that unlike a regular hybrid
vehicle, the electric powertrain is always the one powering the
wheels and the gas engine is only recharging the battery. Like the
Chevy Volt, but the vehicle has never been referred to as having a “
range extender” since it’s the only version of the vehicle
available, but the name came about when it was made an option on
vehicles that are also offered in fully electric.
Here are diagrams of a conventional hybrid versus a e-power/range
extender:
Nissan is going a step further backward with the e-power as it looks
like the gas engine is the only way recharge the battery. They are
talking about “eliminating the need for an external charger”. Not
sure where they are going with this, but that’s a gas-powered car.
There’s no other way to say it. Yes, electric motors are generating
the torque, but gas is the only source of energy.
Here's the actual drivetrain going in production right now according
to Nissan:
Details about availability are scarce, but it looks like it will soon
be available in Japan. You can find the press release in full below.
Nissan introduces new electric-motor drivetrain: e-POWER November 2,
2016
Nissan Motor Co. Ltd., today introduced its new drive system called
e-POWER to customers. It marks the first time that e-POWER technology
is available for consumers, marking a significant milestone in the
electrification strategy under Nissan Intelligent Mobility.
e-POWER borrows from the EV technology perfected in the Nissan LEAF,
the best-selling pure electric car in history, with more than 250,000
units sold. Unlike the LEAF, e-POWER adds a small gasoline engine to
charge the high-output battery when necessary, eliminating the need
for an external charger while offering the same high-output.
The Technology of e-POWER
The e-POWER system features full electric-motor drive, meaning that
the wheels are completely driven by the electric motor. The power
from a high-output battery is delivered to the e-POWER’s compact
powertrain comprised of a gasoline engine, power generator, inverter,
and a motor. In conventional hybrid systems, a low-output electric
motor is mated to a gasoline engine to drive the wheels when the
battery is low (or when traveling at high speeds). However, in the
e-POWER system, the gasoline engine is not connected to the wheels;
it simply charges the battery. And unlike a full EV, the power source
originates from the engine and not just the battery. This system
structure generally requires a bigger motor and battery because the
motor is the only direct source to drive wheels. This has made it
hard for the automotive industry to mount the system in compact cars.
However, Nissan has cracked the code and learned how to minimize and
reduce weight, develop more responsive motor control methods and
optimize energy management. As a result, e-POWER uses a smaller
battery than the LEAF, but delivers the same driving experience as a
full EV.
The Benefits of e-POWER
e-POWER delivers massive torque almost instantly, which enhances
drive response and results in smooth acceleration. Also, the system
operates very quietly, much like a full EV. Because e-POWER relies on
the engine much less frequently, its fuel efficiency is comparable to
that of leading conventional hybrids, especially during
around-the-town commutes. The e-POWER system allows you to enjoy all
the benefits of an EV without having to worry about charging the
battery.
Development History
Nissan is actively pursuing a zero-emission, zero-fatality world for
driving through its EV program and autonomous drive technology. To
make this vision a reality, Nissan is developing “Nissan Intelligent
Mobility,” which anchors critical company decisions around how cars
are powered, how cars are driven, and how cars integrate into
society, all while staying focused on creating more enjoyable driving
experiences. e-POWER is another step towards achieving our
zero-emission vision through a new and more efficient electric
powertrain.
In 2006, Nissan experienced a breakthrough in its energy management
technology. Nissan’s engineers were able to reduce the battery
capacity to match its competitors’ hybrid vehicles while still
delivering desirable EV qualities, such as quietness and efficient
energy use. In addition, application of Nissan’s technologies, such
as the integration of a power-generating engine, electric motor drive
for compact car use, strengthening of the powertrain’s rigidity and
improvements in NVH levels, became the foundation of e-POWER and its
implementation in the compact-car segment. Nissan is committed to
developing electric-powered powertrains that use various fuels to
cater to the different requirements of the world’s markets. e-POWER
is but one example of that quest and will strengthen Nissan’s lineup
of electric-powered powertrains. Nissan is also conducting research
and development of the SOFC (Solid Oxide Fuel Cell) fuel-cell
vehicle, and will continue to introduce innovative new products into
various areas and promote the worldwide use of EVs.