Land Rover - ZF 9-Speed Auto

[Touareg 2.5]

Carscoop

Press Release :

- Land Rover announces the latest in 65 years of technical world firsts with the new ZF 9HP transmission

- The world's first 9-speed automatic transmission results in significant improvements in real world fuel economy

- Lower ratios further enhance Land Rover's renowned all-terrain and all-weather capability

- Innovative adaptive shift system matches and remembers customer driving style for a tailored driving experience

- Land Rover is lead partner on this project with ZF, world leader in transmission technology

Land Rover will demonstrate the latest in a long line of technical firsts at the 2013 Geneva Motor Show withthe announcement of the world's first 9-speed automatic transmission for a passenger car. The ZF 9HP transmission is specifically designed for transverse applications, and is one of the most efficient and technically advanced transmissions ever used in a production vehicle.

Land Rover is the lead partner on the project, working together with ZF who are widely recognised as the world leader in transmission technology.

Increasing the number of gear ratios from six to nine gives significant improvement in fuel economy and a corresponding reduction in CO2 emissions. Smaller ratio steps give improved response during acceleration, improved shift quality, drive and refinement. The higher top gear not only reduces fuel consumption but the lower engine revs improve comfort and reduce noise when cruising at high speed.

The 9HP is extremely robust and perfectly complements Land Rover's rugged all-terrain ability whilst delivering exceptionally high levels of refinement and efficiency. The lowest ratio in the 9HP is far lower than the existing six-speed transmission and is specifically designed for off-road use, towing and more extreme on-road conditions like gradients and altitude, giving the driver a heightened sense of control.

With extremely fast gear changes described by ZF as being: 'below the threshold of perception', the 9HP is not only highly responsive but versatile too. Whereas the existing six-speed transmission makes shifts sequentially, the 9HP has a skip-shift function for much swifter downshifting under rapid deceleration or from greater driver input demands. The torque converter incorporates a multi-stage damper system for smoother pulling away 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.

The innovative adaptive shifting system matches the driver's mood within seconds, sharpening up during brisk driving then slipping seamlessly into a more economical regime just as quickly when taking a more relaxed approach. Curve Mode, longitudinal acceleration and pedal position all control upshift prevention.

Fast-Off mode measures the rate of throttle release, anticipates further requests by the driver for high power, then holds the gear if necessary. If the driver requests a downshift when the vehicle is travelling too fast, the transmission will remember the request and make the shift when the speed drops to an appropriate level.

The 9HP is a masterpiece of packaging and despite the extra three gear ratios is only 6mm longer and weighs 7.5kg less than the outgoing six-speed transmission. The small package space is achieved by a number of innovative design features including a new hydraulic vane-type pump which also contributes to improved efficiency, two, patented, dog clutches replacing bulkier conventional clutch packs, and an Intelligently Nested gear set.

Land Rover was chosen by ZF, one of the world's most technically advanced transmission manufacturers, to be the lead partner on the 9HP and Land Rover engineers have worked in partnership with ZF engineers to jointly develop the transmission to suit the brand. The Land Rover transmission engineering team is already extremely experienced in engineering ZF products to suit Land Rover vehicles having integrated the 8HP with the Range Rover, Land Rover Discovery 4 and Range Rover Sport. The 9HP is produced at ZF's Gray Court facility in South Carolina.

Land Rover

Nuovo cambio ZF automatico a 9 velocità per Land Rover!

Presentazione a Ginevra.

[Regazzoni]

Stanno facendo a gara a chi dice "l'ho montato prima io" sto 9 rapporti ZF.

Mi pare di capire, comunque, che presentano il cambio, ma non il suo effettivo lancio commerciale su un veicolo che va in concessionaria.

A quel punto rischia di essere la Cherokee ad essere davvero la prima vettura al mondo con quel cambio.

[poliziottesco]

Sembra davvero molto interessante, specialmente per l'abilita' (riportata) di cambiare marcia in mod piu' dolce ed impercettibile rispetto al vecchio 6 rapporti. Sembra, almeno in questa applicazione, un cambio devoluto al confort e riduzione di consumi/emissioni, con in piu' la forsa di avere una prima estremamanete corta utile per l'off road.

Mi domando che questo tipo di gear-ratio sara' anche riservato quando questo cambio trovara' spazio su veicoli piu' convenzionali (vedi seg C/D non SUV).

[Regazzoni]

Mi domando che questo tipo di gear-ratio sara' anche riservato quando questo cambio trovara' spazio su veicoli piu' convenzionali (vedi seg C/D non SUV).

In casa Chrysler/Fiat equipaggerà praticamente tutte le TA-TI dal segmento D in su (Cherokee, 200 e Dart saranno le prime a riceverlo nel corso di quest'anno) e non mi meraviglierei di vederlo comparire anche sulla prossima Giulietta.

[stev66]

Io spero che la estendano anche al C e C derivate ( nuova Delta , nuova C rialzetta tipo QQ che prenderà il posto di Bravo ) Fiat e lancia, ed a regime, ed a prezzi ammortizzati anche ai B-MPV e derivati come 500L e 500X.

[poliziottesco]

Come al solito scrivo troppo velocemente, poi scappo e non controllo. Mi domandavo se su gli altri prodotti non SUV su cui sara' utilizzato, il cambio manterra' la medesima gear ratio di questo descritto per Evoque (cioe' con una prima cortissima da off road).

[J-Gian]

Mi domandavo se su gli altri prodotti non SUV su cui sara' utilizzato, il cambio manterra' la medesima gear ratio di questo descritto per Evoque (cioe' con una prima cortissima da off road).