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 (F01) 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 versions have been equipped with it.

One of its main aims is to improve vehicle fuel economy, and it can achieve an 11% saving compared to the ZF 6-speed transmission and 14% versus modern 5-speed transmissions.[2][3] Due to changes in internal design, the shift times have reduced to 200 milliseconds; additionally, the unit brings 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 a 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 had set up a new transmission production plant in Indiana, USA, where the 8-speed transmissions are 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, production began in 2013.

Gear ratios[edit]

1 2 3 4 5 6 7 8 R
4.714 3.143 2.106 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) Application 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- )
8HP50 (2nd Generation)[8] 500 500 BMW 5 Series (F10)
8HP55 550 550 Audi Q5, Audi Q7, Audi A8 and A8L (D4)
8HP70 700 700 BMW 7 Series (F01), BMW X5 (E70), Dodge Durango V8, Iveco Daily, Jeep Grand Cherokee V8 & diesel, Ram 1500 V6, V8, & diesel, Range Rover Sport (2012), Rolls-Royce Phantom, Maserati Quattroporte (2013–), Dodge Charger V8 (2015-), Dodge Challenger V8 (2015-)
8HP75 (2nd Generation) 750 750 -
8HP90 900 1000 Rolls-Royce Ghost,[9] Rolls-Royce Wraith (2013), Bentley Mulsanne, Dodge Challenger SRT Hellcat, Dodge Charger SRT Hellcat

Applications[edit]

Audi[edit]

Bentley[edit]

BMW[edit]

Chrysler[edit]

Dodge[edit]

Iveco[edit]

Jaguar[edit]

Jeep[edit]

Lancia[edit]

Land Rover[edit]

Maserati[edit]

Ram Trucks[edit]

Rolls-Royce[edit]

Volkswagen[edit]

Potential future vehicle uses[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. ^ "New Generation of the 8HP in the BMW 5 Series". Retrieved 20 August 2014. 
  9. ^ "RR ghost specification". Retrieved 21 February 2010. 
  10. ^ "New vehicles with ZF technology". Retrieved 18 June 2011. 
  11. ^ "New vehicles with ZF technology". Retrieved 18 June 2011. 
  12. ^ "Audi Considering 8-Speed Transmissions for Majority of Its Lineup". Retrieved 17 February 2010. 
  13. ^ "First Full Hybrid Based on the Audi Q5's ZF 8-Speed Automatic Transmission". Retrieved 14 September 2011. 
  14. ^ "America’s First Luxury Sedan With Eight-speed Automatic Transmission". Retrieved 5 September 2011. 
  15. ^ "2012 Chrysler Fleet Buying Guide" (PDF). Retrieved 21 July 2011. 
  16. ^ "SEC filing reveals new V6 and 8-speed transmission for Ram". Retrieved 9 March 2012. 
  17. ^ "2014 Dodge Durango Bows With Eight-Speed". Retrieved 28 March 2013. 
  18. ^ "ON TOUR WITH MORE COMFORT ZF DELIVERS 8-SPEED AUTOMATIC TRANSMISSION FOR NEW IVECO DAILY". Retrieved 16 November 2014. 
  19. ^ "2014 Maserati Quattroporte [w/video]". Retrieved 12 December 2012. 
  20. ^ "2013 Ram 1500 Unveiled With Eight-Speed". Retrieved 5 April 2012. 
  21. ^ "ZF to Supply 8-Speed Automatic Transmission to new 2013 Ram 1500 Pick-up Truck". ZF Friedrichshafen AG. Retrieved 20 April 2012. 
  22. ^ "2013 Ram 1500 Crew Cab SLT 4x4 [w/video]". Autoblog.com. Retrieved 25 August 2012. 
  23. ^ "Volkswagen Amarok With 8-Speed Automatic Transmission". Retrieved 22 November 2011. 

External links[edit]