CVT incorporates auxiliary gearbox

  • 14-Feb-2013 10:16 EST
Jatco_CVT7.jpg

 

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.

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