How A CVT Works by TEAM Industries.mov
TEAM has received a lot of requests to explain how a CVT works, here is a
good video showing the basics of CVT. In the future we will be posting more
videos explaining some of our innovations to the basic design. Take a look
and let us know what you think.
ZF 8-Speed Automatic Transmission
ZF has developed a new automatic transmission for cars with eight speeds
that can achieve more than 6% fuel savings. The priority aim in
development, however, was not the maximum number of gears, but minimum
ZF engineers had set the bar high to produce a new benchmark for automatic
car transmissions. The second generation of the ZF 6HP 6-speed
transmission, that entered production only in 2006, defines standards that
are hard to top: reaction times faster than human perception, direct engine
linkage by early-stage torque converter lock-up and intelligent, adaptive
control software, that almost reads the driver's intentions from his foot.
But the new transmission is capable of even more - it saves (even more)
fuel. It also guarantees ultimate driving enjoyment, as well as the
variability needed to be able to use future technologies.
AGCO's Continuously Variable Transmission (CVT) Explained
AGCO was the first company to introduce the Continuously Variable
Transmission (CVT) for agricultural products. It is the only true step-less
transmission in the agricultural market today. While the CVT is superior in
efficiently transferring power to the ground, the largest benefit is
realized when operators can throttle-down and speed-up offering
market-leading production and fuel efficiencies.
CVT Transmission Basic Operation
CVT Transmission Basic Operation
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The CVT or Continuously Variable Transmission is the newest, totally
redesigned automatic transmission to see the day. Yes, this is a completely
new type of automotive transmission. In this series, we will cover its
basic and advanced operation, as well as lots of issues dealing with CVT
reliability. At this time, most vehicle manufacturers are mass producing
their own version of the CVT transmission, which within the next decade,
will completely replace regular automatic transmissions, that use old wet
The CVT or Continuously Variable Transmission is a belt driven, infinitely
variable ratio transmission. A CVT consists of an electronically controlled
and oil pressure supported variator cones. The variator cones consists of a
set of pulleys, primary or driver and secondary, or driven, and a high
strength alloy steel push-belt. The engine power is transferred, from the
primary driver pulley to the secondary driven pulley, by way of the CVT
belt. The CVT belt is the heart of the CVT, and forms the main link between
the vehicle's engine, and the wheels. By changing the ... Get the whole
story right here in this video... Enjoy...
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XTRONIC CVT in the 2013 Nissan Altima | AutoMotoTV
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Next-generation XTRONIC CVT®
Nissan first adopted the Continuously Variable Transmission in 1992, then
refreshed and modernized it a decade later, becoming one of the world's
first automotive manufacturers to include the CVT on passenger cars. Now,
10 years on again, they've taken it to another level.
The 2013 Nissan Altima will be the first Nissan with the next-generation
XTRONIC CVT. The dramatically improved technology achieves a significant
15% increase in fuel efficiency, accelerates faster, runs quieter and offers an even more
seamless shifting experience.
How does it do this? By giving it the world's highest transmission ratio
and also reducing the transmission's weight, length, friction, and even the
amount of transmission fluid needed.
The transmission ratio is 7.3:1, which is a broader ratio than you'll find
in an average automatic, and far superior to the 6.0:1 you'd find in a
similar model vehicle.
Intelligent CVT Logic ensures that the transmission is always in the right
gear, which eliminates any wasteful gear hunting. The expanded gear ratio
also reduces engine revolutions drastically, allowing the Altima to cruise
at 60 miles per hour at fewer than 1500 RPMs. The benefits of lower RPMs
are obvious -- better fuel efficiency and a noticeably quieter ride.
So, what does all this mean for the driver? Efficiency: up to 15% increase
in fuel efficiency. Performance: it delivers absolutely seamless
performance and alleviates many of the concerns that drivers held about
earlier CVT's. Quiet: the higher-efficiency and 40% reduction in friction
allows the car to perform at higher speeds at very low RPMs, practically
eliminating all noise from the transmission.
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How a Differential Works and Types of Differentials
Video I created for Toyota in 2007. This was produced on a budget but its
purpose is to explain the concepts and not be a Pixar-budget film.
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The D-Drive Infinitely Variable Geared Transmission
This brain-bending invention could be the holy grail of transmission
technology - it allows you to smoothly move through gear ratios from top gear all
the way through neutral and into reverse without ever disengaging the
engine. Plus, there's no friction drive component, so the power is always
transmitted through gear teeth - there's never any slip or friction losses.
In fact, the D-Drive's main difficulty is that it's so damn hard to
understand that people don't really know what to do with it. So here's a
close-up look, which will hopefully get a few people thinking.
Read the complete article here:
mission-geared/15088/ and a follow up to the response here:
Subaru CVT in Action
From the Detroit Auto Show (NAIAS), this demos the CVT as used in the
Outback as it goes from "low" to "high" gear. Note the change in ratio
between the upper (input) and lower (output) pullies.
Nissan's Next Generation CVT | Autoblog
We drive Nissan's Next Generation CVT at the GranDrive test track in
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