The transmission structure Xiangjie metal belt CVT

Common types of transmission in a modern car, in accordance with the internal structure, it can probably be divided into two step stepless stage two in the previous two articles have detailed, thenNext said VAS 5054A stepless transmission. The so-called stepless transmission refers to the transmission does not have a fixed gear, the transmission ratio is continuously changing. Most common stepless transmission number CVT device (VDT-CVT), this transmission in domestic models equipped with time is not long, but it is not a new product, because it is as early as 1490, in the imagination of Leonardo da Vinci painting, CVT patent application in 1889. Netherlands VDT (Van Doorne's Transmissionb.V) until the late 1970s developed the first car with CVT, and this CVT called VDT-CVT. 1987 Subaru first time this VDT-CVT transmission equipment in their Justy models. Until 2005, the Netherlands VDT has cumulative production of more than 10 million sets of VDT-CVT transmission, and it's equipped models are also more and more, like the previous generation wide of the Fit (GD), Fiat Palio, Chery Cowin, Nissan Teana, Lanse and so can already optional VDT-CVT transmission version. Then the following describes the structure and principle of this transmission.

Figure: This is a composite metal belt CVT, visible in addition to the metal band and work round prior to the input shaft of a set of planetary gears.

Figure: Bosch (BOSCH) launched the transmission metal band, sandwiched by a metal ring belt composed

FIG: using a metal ring to protect the belt allows the belt to avoid the belt is damaged by friction during operation.

Let us talk about the structure of the CVT transmission. CVT is, we often say that the CVT transmission the stepped transmission said its internal structure with the previous two is completely different, not only is the internal structure, and even the transmission drive components are not the same. Before have introduced two-stage transmission gear, but they are using gears to achieve the transfer of power metal belt CVT V-shaped active job rotation through the surface of the metal strip, V-driven wheel to power transmission. Active working wheel mounted on the input shaft above after gaining momentum, it will lead to rotation of the metal strip, while the other end of the metal band is connected to the driven wheel, the driven wheel is connected to the output shaft, so power will be passed in this way to the output shaft, and then through Beano other components of the power transmitted to the wheels.