This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (April 2019) (Learn how and when to remove this message)

The ZF Ecomat automotive transmission was specifically designed by ZF Friedrichshafen AG primarily for city-buses and motorcoaches. It has several generations – all of the automatic transmission type, and many variants. The latest variants use a lock-up torque converter along with a retarder. Some variants are listed below.

Gear ratios Ecomat I (1980–1985)

Gear ratios Ecomat I/II/IV (1985–2016)

1st generation — Ecomat (1980–2002)

All generations of the Ecomat series are no longer in production.

• 4HP500 / 5HP500 / 6HP500 — four-, five- or six-speed; maximum input torque of 1,100 N⋅m (811 lbf⋅ft)
• 4HP590 / 5HP590 / 6HP590 — four-, five- or six-speed; maximum input torque of 1,250 N⋅m (922 lbf⋅ft)
• 4HP600 / 5HP600 / 6HP600 — four-, five- or six-speed; maximum input torque of 1,400 N⋅m (1,033 lbf⋅ft)

2nd generation — Ecomat 2 (1997–2007)

All generations of the Ecomat series are no longer in production.

• 4HP502/C / 5HP502/C / 6HP502/C — four-, five- or six-speed; maximum input torque of 1,100 N⋅m (811 lbf⋅ft)
• 4HP592/C / 5HP592/C / 6HP592/C — four-, five- or six-speed; maximum input torque of 1,250 N⋅m (922 lbf⋅ft)
• 4HP602/C / 5HP602/C / 6HP602/C — four-, five- or six-speed; maximum input torque of 1,600 N⋅m (1,180 lbf⋅ft)

3rd generation — Ecomat 4 (2006–2016){{anchor|3rd} }

All generations of the Ecomat series are no longer in production.

• 5HP504/C – five speed for lighter buses up to 13 ton; maximum input torque of 850 N⋅m (627 lbf⋅ft)
• 5HP504/C / 6HP504/C — five- or six-speed; maximum input torque of 1,100 N⋅m (811 lbf⋅ft)
• 5HP594/C / 6HP594/C — five- or six-speed; maximum input torque of 1,250 N⋅m (922 lbf⋅ft)
• 5HP604/C / 6HP604/C — five- or six-speed; maximum input torque of 1,750 N⋅m (1,291 lbf⋅ft)

Use in rail vehicles

In addition to its use in road vehicles, the Ecomat transmission is also employed in the Class 172 lightweight diesel multiple unit (DMU) trains in service with various operators in Great Britain, in major refurbishments of ČD Class 842 in the Czech Republic, CAF built C4K in Northern Ireland and the ABB Scandia built IC3 (DSB Class MF) DMUs in Denmark.

See also

• List of ZF transmissions

References

• "ZF Ecomat – Driveline Technology in City Buses". ZF Friedrichshafen AG. ZF.com. Archived from the original on 18 July 2011. Retrieved 24 November 2009.
• "Volvo B10M Mk I Operator's Manual, Volvodemort version, Specifications Section". ZF Friedrichshafen AG. ZF.com. Retrieved 14 February 2013.{{cite web}}: CS1 maint: deprecated archival service (link)

This transport-related list is incomplete; you can help by adding missing items. (October 2021)