Land Rover will be officially announcing the world’s first 9-speed automatic transmission for a passenger car at the 2013 Geneva Motor Show, together with other technological firsts from the company.
Land Rover is the lead partner on the project along with ZF, a company that is which is widely recognized as the world leader in transmission technology. The ZF 9HP transmission is specifically designed for transverse applications, and is claimed to be one of the most efficient and technically advanced transmissions ever used in a production vehicle
By increasing the number of gear ratios from six to nine, significant improvements in fuel economy and corresponding decrease in carbon emissions can be achieved. Smaller ratio steps give improved response during acceleration, improved shift quality, drive and refinement. The higher top gear is claimed to not only reduce fuel consumption but the lower engine revs improve comfort and minimize noise when cruising at speed.
The 9HP transmission perfectly complements Land Rover since its lowest ratio is claimed to be lower than the existing six-speed transmission, seen to be a good match for off-road use, towing, and more extreme on-road conditions.
The 9HP also has a skip-shift function for faster downshifting under rapid deceleration or from greater driver input demands. The torque converter incorporates a multi-stage damper system for a smoother pull and improved refinement.
“We are extremely excited about the 9HP which has been tailored exactly to dovetail with the unique attributes of our vehicles. It will add another layer of performance, refinement and efficiency, further enhancing Land Rover’s world class abilities,” said John Edwards, Land Rover Global Brand Director.