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Explore GizmagZF develops 8-speed automatic transmission for passenger cars
Well-geared: Better transmission spreading and a significantly better internal efficiency allow for consumption savings of up to six percent in the new ZF automatic 8-speed transmission compared to the direct predecessor model with six speeds.
May 4, 2007 Driveline specialist ZF has designed a new automatic transmission generation for passenger cars combining seemingly contradictory goals. Presented for the first time at the 28th International Vienna Motor Symposium, the 8-speed auto allows for fuel savings of six percent compared with the company’s already optimized 6-speed automatic transmission. This is achieved by a completely new transmission concept featuring four planetary gear sets and five shift elements. The automatic 8-speed transmission transmits more power in comparison to the previous model, but still gets by with the same installation space and does not require more components. The transmission is also designed for hybridization as either a micro hybrid with a crankshaft starter generator or a full parallel hybrid.
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