ZF Ecomat
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.
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 1100 Nm
- 4HP590 / 5HP590 / 6HP590 — four-, five- or six-speed; maximum input torque of 1250 Nm
- 4HP600 / 5HP600 / 6HP600 — four-, five- or six-speed; maximum input torque of 1400 Nm
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
- 4HP592/C / 5HP592/C / 6HP592/C — four-, five- or six-speed; maximum input torque of
- 4HP602/C / 5HP602/C / 6HP602/C — four-, five- or six-speed; maximum input torque of
3rd generation — Ecomat 4 (2006–2016)
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
- 5HP504/C / 6HP504/C — five- or six-speed; maximum input torque of
- 5HP594/C / 6HP594/C — five- or six-speed; maximum input torque of
- 5HP604/C / 6HP604/C — five- or six-speed; maximum input torque of