A continuously variable transmission cvt, also known as a shiftless transmission, stepless transmission, pulley transmission, or, in case of motorcycles, a twistandgo, is an automatic transmission that can change seamlessly through a continuous range of effective gear ratios. Cvt is still a new technology and the automakers have been working to improve it. Vehicles xtronic continuously variable transmission cvt was defective. Nissan sentra xtronic cvt transmission overheating and. Oct 17, 2012 nissan new generation xtronic cvt for 2. Jul 01, 2018 a cvt uses a steel belt or pulley system to move gears in a continuous ahhh, smooth motion. How to care for a nissan xtronic cvt by admin posted in new technology, service on thursday, october 29th, 2015 at 2. Nissans xtronic cvt continues to evolve in its third generation with dstep logic control.
Cvt allows the forward speed of the combine to be adjusted independently of the. Do not use automatic transmission fluid atf, manual transmission fluid. Xtronic cvt continuously variable transmission nissan usa. The xtronic cvt shifts quickly to the optimum gear, and the engine speed rises rapidly. In september, 2017 nissan was accused of designing xtronic cvts. A manual cvt is both the best and worst automotive idea ever. Nissans xtronic cvt technology delivers the auto channel. The cvt system makes it so you feel no gear shock at all, for a much smoother ride. Cvt technology had been available since century ago, and it become popular among the luxury car. A cvt uses a steel belt or pulley system to move gears in a continuous ahhh, smooth motion. Advanced cvt modeling and control mobility of humans and goods has been one of the central issues of technology. Xtronic cvt technology overview cvt advantages exceptional transmission ef.
The complaint for this class action quotes many online complaints that describe problems with 2012 to 2017 nissan sentras that are equipped with nissans xtronic continuously variable transmission cvt. Driver should monitor traffic conditions and brake as needed to prevent collisions. The variable automatic gearbox is commonly known as the cvt gearbox. The cvt in honda cars are better than other brands. Acceleration the vehicle accelerates as soon as the driver presses the accelerator.
A nissan sentra xtronic cvt continuously variable transmission lawsuit alleges model year 20122017 sentras have transmissions that overheat and fail due to the cooling systems. The first major application of the xtronic cvt in the u. Using a cvtconfigured powertrain, the engine operates at or near maximum. Some go so far as to call it a safety hazard when trying to merge onto a busy road. What transmission type is better, cvt or tiptronic. Simple cvts combining a centrifugal drive pulley with a spring loaded driven pulley. Nissans xtronic cvt technology delivers nissan motor co.
And the improvements havent compromised efficiency. Oct 01, 2019 how long do cvt transmissions last if you take good care of them. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Nissan sentra xtronic cvt lawsuit targets 20122017 models. Actual mileage may vary with driving conditions use for comparison only. With the release of the nextgeneration xtronic cvt, nissan was able to realize a transmission ratio of 7. No detours, potholes, or streetparkingonly restaurants can hold you back. According to the complaint, the cvt is prone to premature failure from overheating. During normal driving, the transmission retains the smooth, seamless response for which the xtronic cvt is known. Apr 01, 2014 and the improvements havent compromised efficiency.
If you go to the nissan website, find the altima sedan, look at the tabs when you click on explore. Theyre becoming the norm on many cars, and in many. Cvt for the new age, combining environmental and sporty drive performance. This file contains additional information such as exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. Cvt cvt allows for the operation at the lowest possible speed and highest possible load, partially avoiding the low efficiency region of the engine map. Even though the electric car has nally made an entrance into the vehicle market, we still heavily rely on prime movers for transportation. Continuous variable transmission cvt system provides a solution that enable the generation of staples shifting of gear ratio regardless of the speed and torque requirement. Nissan realized the advantages of cvts early on and has worked vigorously to improve. Smooth ratio transitions for enhanced driving pleasure driving pleasure is enhanced by the linear. The altimas new generation xtronic cvt continuously variable transmission is designed to deliver a smooth, responsive, fluidfeeling performance feel with efficient operation.
You know when you go from 045, and you feel the gear shock, or when you shift gears. Sustained power delivery allows the vehicle speed to rise smoothly. How to care for a nissan xtronic cvt robbins nissan blog. Nissan first adopted the continuously variable transmission globally in 1992, and have gone through constant development, enhancement, and improvement ever since. But, they will still last for a long time if you do proper maintenance. Theres also a cvt7 jf020e model made for small not mini cars, with the auxiliary gearbox another power glide, just like the jf015e. Xtronic cvt engine speed conventional cvt the xtronic cvt shifts quickly to the optimum gear, and the engine speed rises rapidly. Cvt fluid is a functional part of the continuously variable transmission. But the vast majority of nissan cvts since 2006 and newer have proven themselves reliable. In fact xtronic cvt is third and the most advanced generation of cvt systems with metal. The driver can expect instantaneous power and stronger acceleration from 0 mph, rapid and easy accelerating when merging and passing, a. Emblems free delivery possible on eligible purchases. Nissan appreciated the cvts benefits of fuel economy and seamless acceleration from an earlier stage, and was the worlds first to offer cvts for engine displacements as large as 3. The xtronic cvt m6 continuously variable transmission is the worlds first steelbelt cvt capable of being used on frontwheeldrive cars powered by a large 3.
As 2016 continues to roll out, there is something you may have noticed about the nissan model lineup. Available sentra transmissions choices depending on model are the advanced xtronic cvt continuously variable transmission and 6speed manual. Powerful acceleration is obtained immediately at any driving speed. We have a 2000 saturn sl2 with 168,000 on the clock, and things feel like it may not be with us for much longer. As most of us know by now, the cvt is no longer a rarelyseen dutch unicorn, like a discarded vermeer or an amsterdam sex worker in nashville. If youe between in the market for a new nissan in the last decade, youe undoubtedly heard salespeople speak enthusiastically about the irtues of the xtronic continuously variable transmission, or cvt for short. Nissan unveils nextgeneration xtronic cvt, new 1motor, 2. Jun 02, 2007 xtronic cvt is basically a transmissionles transmisison. As opposed to mt manual transmission or at automatic transmission, cvt. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Nissan is a forerunner in continuously variable transmission technology and its latest models are now equipped with its thirdgeneration xtronic transmission with dstep logic control. Cvt allows for the operation at the lowest possible speed and highest possible. Compared to the manual transmission, invention of automatic. Jatco refers to this new, cvt clutchandplanetary stepped design as an auxiliary gearbox figure 1.
Cvt shift control allows the engine speed to rise naturally with vehicle acceleration. Class action alleging that nissan sentras xtronic continuously variable transmissions overheat and fail during. Preliminary design of new concept compact continuously variable transmission lau ong yee a project report submitted in partial fulfillment of the requirement for the. Are xtronic cvt transmission automatic yahoo answers. Xtronic cvt a continuously variable transmission cvt has many attractive features, such as helping to improve fuel economy, providing smooth acceleration, delivering engine power continuously and facilitating powerful driving performance. By combining smaller shaftdiameter pulleys with a new and. Next up to get a newgeneration cvt is the completely redesigned 20 nissan altima. The new xtronic cvt features a sub planetary gear to enable a higher ratio coverage.
Hey everyone, i found this website while looking for info about nissans xtronic cvt. Its boring no doubt, if you grew up driving a manual transmission a. Design of continuously variable transmission cvt with metal. Nissans xtronic continuously variable transmission cvt. Nissan sentra xtronic cvt transmission overheating and failure. Theoretically a cvt is better because the engine can be kept in the most economical band or most powerful band depending on driver demands. Its a concept that the washington post says makes a lot of sense.
Nissan introduced its masterpiece, xtronic cvt, a new generation of cvts in which the range of torque variations increased the acceleration of a car in the low ratio and decreased the fuel consumption in the high ratio. During rapid acceleration, once the vehicle reaches 4,000 rpm such as when merging onto a busy highway, the software commands the electronic brain of the xtronic cvt gearbox to hold a ratio and then shift. Xtronic cvt conventional cvt the vehicle accelerates as soon as the driver presses the accelerator. Nissan unveils new generation xtronic cvt torque news. Xtronic cvt, we enhanced realworld fuel economy based upon simulations of typical. Learn about the advantages of nissans gamechanging cvt technology. Continuously variable transmission the continuously variable transmission cvt is a transmission in which the ratio of the rotational speeds of two shafts, as the input shaft and output shaft of a vehicle or other machine, can be varied continuously within a given range, providing an infinite number of possible ratios. These cvts were designed to achieve lightweight compactness and to help improve fuel efficiency. Cars are merging on the freeway behind me going at least 60. I have a 2009 maxima with close to 300,000kms on it and i have not had any problems with the transmission. The new audi multitronic with tiptronic function offers a synergy of the best possible dynamics, optimal fuel utilisation and the highest possible level of drive comfort. There is a simple 3part demonstration that you can use to show customers how dstep tuning adds to the versatility of their transmission. A continuously variable transmission cvt transfers power through a range. A continuously variable transmission cvt transfers power through a range of speedtorque ratios from engine input to output, continuously without interruption.