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Filed under: Nissan Nissan and JATCO have just announced a new continuously variable transmission that features a wider ratio spread than any previous example of the type. The maximum spread from low to high in the past has been 6:1 but Nissan/JATCO have expanded that range to 7.3:1, a change that offers better fuel efficiency. Since this is a friction belt type CVT, expanding the ratio spread can normally be problematic because of the physical limitations of bending the steel belt around the pulleys. However, the automaker and transmissions builder have developed a novel solution that essentially creates a hybrid transmission. It's not a transmission that passes electrical and mechanical power. Rather it's a combination belt CVT and conventional geared transmission. A small auxiliary gear-set is added to the CVT to provide an extra range to the ratios. View post: Greener CVT, with auxiliary gearbox, coming from Nissan and JATCO ... http://www.depozitul.net/2009/07/green...