ZF 8HP transmission

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ZF 8HP
Overview
Manufacturer ZF Friedrichshafen
Production 2008–
Body and chassis
Class 8-speed longitudinal automatic transmission
Chronology
Predecessor ZF 6HP
Automatic Transmission 8HP70

The ZF 8HP is an eight-speed automatic transmission, designed and built by ZF Friedrichshafen AG's subsidiary in Saarbrücken.[1] It had its debut in the new BMW 7 Series 760Li saloon fitted with the V12 engine and since then each new BMW model in all Series down to the 1 Series in rear wheel drive and all wheel drive version was equipped with it.

One of its main aims is to improve vehicle fuel economy, and it can achieve an 11% saving compared to ZF-6 speed transmission and 14% versus modern 5-speed transmissions.[2][3] Due to changes in internal design, shift times have reduced to 200 milliseconds, along with the ability to shift in a non-sequential manner - going from 8th to 2nd in extreme situations.[4] In the 8HP70 version, it has a torque handling limit of 700 newton metres (516 lbf·ft), and weighs 90 kilograms (198 lb).[5]

Future development will see two four-wheel drive versions available, with version destined for Volkswagen Group applications, using a Torsen centre differential.[5] It will be able to encompass a torque range from 300 newton metres (221 lbf·ft) to 1,000 newton metres (738 lbf·ft), and will be available for use in middle class cars, through to large luxury sport utility vehicles.[5]

Chrysler Group LLC initially received the 8HP 8-speed automatic transmissions from the ZF Getriebe GmbH plant in Saarbrücken, Germany. By 2013, in parallel with Chrysler Group, ZF has set up a new transmission production plant in North America, where the 8-speed transmissions will be produced.[6] ZF Friedrichshafen and Chrysler Group have reached a supply and license agreement for ZF's 8HP 8-speed automatic transmission. Chrysler Group is licensed to produce the 8HP at the company’s Kokomo Transmission Plant and the Kokomo Casting plant, starting in 2013.

Gear ratios[edit]

1 2 3 4 5 6 7 8 R
4.696 3.130 2.104 1.667 1.285 1.000 0.839 0.667 3.300

List of ZF 8HP variants[edit]

name max. gasoline torque (N·m) max. diesel torque (N·m) examples
8HP30 300 300 -
8HP45 (845RE by Chrysler)[7] 450 500 BMW 1 Series (F20), BMW 3 Series (F30), BMW 5 Series (F10), Chrysler 300 V6, Dodge Charger V6, RAM 1500 V6 (2013- )
8HP55 550 550 Audi A4 (B8), Audi A6 (C7)
8HP70 700 700 BMW 7 Series (F01), BMW X5 (E70), Dodge Durango V8, Jeep Grand Cherokee V8 & diesel, Range Rover Sport (2012), Maserati Quatroporte(2013-)
8HP90 900 1000 Rolls-Royce Ghost,[8] Bentley Mulsanne, Dodge Challenger SRT Hellcat

Transmissions in blue are used by Chrysler.

Applications[edit]

Audi[edit]

Bentley[edit]

BMW[edit]

Chrysler[edit]

Dodge[edit]

Jaguar[edit]

Jeep[edit]

Lancia[edit]

Land Rover[edit]

Maserati[edit]

Ram Trucks[edit]

Rolls-Royce[edit]

Volkswagen[edit]

Potential future vehicles to use it[edit]

See also[edit]

References[edit]

  1. ^ "ZF unveils new 8-speed automatic gearbox". PaulTan.org. 3 May 2007. Retrieved 18 September 2009. 
  2. ^ "Fuel saving and minimizing CO2 emissions". ZF Friedrichshafen AG. Retrieved 18 September 2009. 
  3. ^ Mike, Hanon. "ZF Develops 8-Sped automatic". Article. Gizmag. 
  4. ^ "Maximum driving enjoyment with maximum agility". ZF Friedrichshafen AG. Retrieved 18 September 2009. 
  5. ^ a b c "The freedom to exceed limits" (PDF). ZF Friedrichshafen AG. Retrieved 18 September 2009. 
  6. ^ "ZF and Chrysler Reach Agreement for new 8-Speed Automatic Transmissions". Retrieved 10 June 2010. 
  7. ^ "New Eight Speed Transmission Introduced by Chrysler". Retrieved 2 September 2011. 
  8. ^ "RR ghost specification". Retrieved 21 February 2010. 
  9. ^ "New vehicles with ZF technology". Retrieved 18 June 2011. 
  10. ^ "New vehicles with ZF technology". Retrieved 18 June 2011. 
  11. ^ "Audi Considering 8-Speed Transmissions for Majority of Its Lineup". Retrieved 17 February 2010. 
  12. ^ "First Full Hybrid Based on the Audi Q5's ZF 8-Speed Automatic Transmission". Retrieved 14 September 2011. 
  13. ^ "America’s First Luxury Sedan With Eight-speed Automatic Transmission". Retrieved 5 September 2011. 
  14. ^ "2012 Chrysler Fleet Buying Guide". Retrieved 21 July 2011. 
  15. ^ "SEC filing reveals new V6 and 8-speed transmission for Ram". Retrieved 9 March 2012. 
  16. ^ "2014 Dodge Durango Bows With Eight-Speed". Retrieved 28 March 2013. 
  17. ^ "2014 Maserati Quattroporte [w/video]". Retrieved 12 December 2012. 
  18. ^ "2013 Ram 1500 Unveiled With Eight-Speed". Retrieved 5 April 2012. 
  19. ^ "ZF to Supply 8-Speed Automatic Transmission to new 2013 Ram 1500 Pick-up Truck". ZF Friedrichshafen AG. Retrieved 20 April 2012. 
  20. ^ "2013 Ram 1500 Crew Cab SLT 4x4 [w/video]". Autoblog.com. Retrieved 25 August 2012. 
  21. ^ "Volkswagen Amarok With 8-Speed Automatic Transmission". Retrieved 22 November 2011. 

External links[edit]