XTRONIC CVT
CAR TECHNOLOGY
- Category
- Environment Technologies
- Dynamic Performance
This is a newly developed compact CVT which features a unique sub-transmission. ratio coverage that surpasses 7-speed automatic transmission, as well as a significant efficiency improvement. It achieves small and light packaging and high fuel economy.
This has first been installed in Juke released in June 2010.
*Comparison in passenger vehicles (except MT and DCT. In-house research)
This has first been installed in Juke released in June 2010.
*Comparison in passenger vehicles (except MT and DCT. In-house research)
Characteristics of the newly developed XTRONIC CVT
| Fuel economy | +10% (target value) |
| Ratio coverage | 7.3 (Standard model: 6.0) |
| Friction reduction | -30%** |
| Weight reduction | -13%** |
| Size reduction | -10%** |
**as compared to previous CVTs of similar class (excluding MT, DCT. In-house research)
A new mechanism that realizes gear ratio width expansion
In ordinary CVTs, the pulley had to be made larger in order to expand the ratio coverage. For small vehicles, it has been difficult to achieve this due to layout constraints. In the XTRONIC CVT, ratio coverage has been expanded while keeping the pulley size small by employing a sub-transmission (2-step gear shift).
This enables both an improvement in response upon launch and at low speeds as well as the capability to keep low engine rpm while driving at high speeds. Both features result in better fuel economy.
This enables both an improvement in response upon launch and at low speeds as well as the capability to keep low engine rpm while driving at high speeds. Both features result in better fuel economy.
XTRONIC CVT— Main Technologies
The following technologies were used in order to achieve miniaturization, weight reduction, and high fuel economy.
