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

Freudenberg Sealing Technologies has expanded its LESS (Low Emission Sealing Solution) lineup to include new products designed to address challenges associated with powertrain friction, smaller spaces, lighter weight vehicles and growth in the electric mobility vehicle arena.
At least for this moment, all is right with the world as Mercedes-Benz reinstates a new-age version of its iconic inline six-cylinder engine.
Tanktwo, a Finland-based startup company is rethinking the basic battery cell and challenging the fundamental economics and operational assumptions of EVs. The ingenious concept is worth engineers' attention.
Conti’s 48-V system will be standard equipment on both gasoline and diesel versions of the Scenic Hybrid Assist model. It is the first of multiple 48-V production announcements coming over the next few years.

Related Items

Training / Education