CVT incorporates auxiliary gearbox

  • 14-Feb-2013 10:16 EST


The CVT7 from JATCO Ltd. features an auxiliary gearbox with a two-stage switch that has been built into the conventional CVT structure. Precise control enables seamless connection between the two transmissions to achieve a ratio coverage of 7.3, the world’s largest (for belt CVTs as of October 2012), according to the company. The large ratio coverage enhances responsiveness when starting and accelerating and improves quietness at high speeds. With the incorporation of an auxiliary gearbox, it is possible to reduce the size of the pulleys. The use of a super-flat torque converter and integration of the forward/reverse clutch combined with the auxiliary gearbox reduces total length by 10% and mass by 13% compared with conventional CVTs of the same class, claims the company. A review of the design has led to a reduction in the size and weight of the pulleys and reduced oil agitation. In turn, this has helped reduce friction by approximately 30% compared with the conventional CVTs of the same class.

HTML for Linking to Page
Page URL
Rate It
1.00 Avg. Rating

Read More Articles On

The 7th generation 5 Series, known internally as the G30, focuses on power, torque, mass and aero-drag reduction and refinement.
The visually captivating Lexus LC coupe debuts Toyota's GA-L architecture and features the new Aisin 10-speed, lightweight construction and a new hybrid powertrain.
A new version of the LG Chem Z.E. 40 battery delivers nearly double the energy density of its predecessor.
Lucid Motors makes a move on the credibility scale by taking Automotive Engineering for a city-street romp in a prototype of its Air luxury sedan slated for 2018 production.

Related Items

Training / Education
Training / Education