关于CVT波箱

lovelg

据说 honda fit/jazz 的cvt 波箱出问题很多。

请问Toyota的CVT 波箱问题多吗？

还是只要是CVT波箱的车就不要买？

高飞

我在国内的网站上查了一下，CVT最好不要买，相对来讲Nissan，Subaru的好一些

大内密探007

cvt省油，但是后期维护较高

爱国爱港

http://www.dogandlemon.com/articles/automatics-cvt-transmissions

CVT Transmissions

Back in the 1950s, some automatic transmissions had only two gears. Two-speed transmissions were a pain, because when you were going up a hill you only had two options: first or second gear; it screamed in first gear or lost power in second. Then, as you went faster, the transmission was screaming because it needed an extra gear but didn’t have one.

Two-speed automatics were not only inconvenient to use, but they robbed the car’s engine of much of its power and drank fuel like there was no tomorrow.

You may never notice it, but your four or five-speed automatic suffers from the same problems as the two-speed one described above: it never gets the gears quite right. That’s why cars with conventional automatics never put out quite as much power as those with a manual gearbox and almost always use more fuel.

In the 1950s, a Dutch company called DAF came up with a new type of automatic transmission that solved the problems described above. Instead of having a small, fixed number of gears, DAF’s gearbox simply made up the gearing as it went along; the DAF transmission could change itself internally to produce a wide range of different gears, each one perfectly suited to the road conditions and driving style of that vehicle. The Continuously Variable Transmission (CVT) was born.

There are no fixed gears (e.g., first, second, third, and so on) in a CVT. The transmission simply invents the right gear at the right time. In theory a CVT is the ideal gearbox.

In practice, however, most modern CVT gearboxes suffer from the same problems as their ancestors: because they don’t have gears (like on the back wheel of a bicycle), many CVTs use belts instead, like the one that goes around your waist. The problem is, these transmission belts break, no matter how well they’re made. When they break, the whole transmission has to come out, generally for a complete overhaul at great expense. CVT gearboxes that use chains are better, but they still break.

The carmakers knew this when they put these CVT transmissions onto the market, but they also knew that most of the CVTs wouldn’t break until the vehicle was out of guarantee, meaning it wouldn’t be the carmakers’ problem. However, even that scam didn’t work: both Nissan’s and Honda’s CVTs have been subject to multiple recalls, some on almost-new vehicles. It’s possible that someone will eventually figure out how to build a CVT transmission that lasts as long as a conventional manual gearbox, but we’re not holding our breath. In the meantime, the evidence to date suggests that CVT transmissions can easily become a nightmare for car owners.

The fact that many CVT transmissions die young shouldn’t be your problem; the easiest option is to simply avoid CVT transmissions entirely!

910704

CVT nissan的车动力上体现不错，国内开过CVT的 换挡基本无间隔。 CVT变速箱保养一定要用专用的CVT变速箱油，否则不论CVT 任何变速箱都爱出毛病

无名の小菜花

CVT没问题的话坐着是真舒服  新款A6全线CVT。。。。。

高飞

无名の小菜花 发表于 2011-12-27 08:42
CVT没问题的话坐着是真舒服  新款A6全线CVT。。。。。

老A6上的CVT投诉非常多

爱国爱港

高飞 发表于 2011-12-27 11:41
老A6上的CVT投诉非常多

活该啦！他妈的德国佬造那些炕爹的破车

高飞

爱国爱港 发表于 2011-12-27 14:16
活该啦！他妈的德国佬造那些炕爹的破车

听说现在大众主推DSG，CVT迟早会被淘汰

不过现在新推出的DSG据说寿命也不是很长，还是AT，MT最保险

爱国爱港

高飞 发表于 2011-12-27 14:17
听说现在大众主推DSG，CVT迟早会被淘汰

按Dog and Lemon Guide里面说，DSG是走赛道的波箱，不适合平时开车用，而且像一般大众集团做车的习惯，波箱永远不耐操。DSG也是问题波箱，在美国已经要回收 。

高飞

爱国爱港 发表于 2011-12-27 14:22
按Dog and Lemon Guide里面说，DSG是走赛道的波箱，不应该平时开车用。

我看了国内论坛的评论，车主都很担心DSG的寿命，还是AT，MT更保险

爱国爱港

高飞 发表于 2011-12-27 14:23
我看了国内论坛的评论，车主都很担心DSG的寿命，还是AT，MT更保险

你说对了，那些传统机械设计还耐操

高飞

爱国爱港 发表于 2011-12-27 14:27
你说对了，那些传统机械设计还耐操

只要看看皮卡用什么传动就知道那种设计最牢靠了，除了MT，就是AT