AUTOMATIC TRANSMISSION FOR TRUCKS AND BUSES WITH EDC ENGINES & CAN COMMUNICATION

ZF-ECOMAT 2
With the Ecomat 2 the tested Ecomat transmission series has been further developed and adapted to the engine technology of the Euro 2 and Euro 3 standard with CAN interface. It is designed for the use in coaches with a total weight of up to 28t.
Electro-hydraulic control has been modified resulting in optimum, smooth shifting comfort as well as further improved economy. The integrated retarder with infinitely variable electric control is available in all speeds and effective until shortly before vehicle standstill. Via electronic control it can be set to constant deceleration and moreover it can be incorporated in the braking management.
The newly developed electronic control unit processes information direct from the CAN communication with the engine. As a result there is no need for a load sensor or the necessity for its adjustment.
The new diagnostic systems with manual control permit swift and simple system checks on the vehicle. Integration in the on-board diagnostic system is achieved via interface to ISO 9141, KWP 2000 or SAEJ1587.

ELECTRONIC CONTROL
The new learning electronic control unit EST 46C / EST 47C which can communicate with electronic systems such as CAN, SAE J 1939 and others provides a continuously variable and acceleration-dependent shift speed as well as simple electric retarder actuation. It can be adapted to the customer's requirements direct on sight. The electronic control unit considerably contributes to an increase in shift quality and safety, to increased economy due to a further reduction of fuel consumption as well as to increase reliability and it simplifies installation and service.

OIL/WATER-HEAT EXCHANGER
The newly designed heat exchanger is characterized by a reduced flow-resistance and improved cooling performance. It is corrosion resistant and offers various cooling water connections.

AUXILIARY UNITS
The use of ZF angular drives on the ZF Ecomat allows improvement of arrangement and accessibility in the engine compartment with conventional axle arrangements.
Combined with ZF drop center axles for buses the use of angular drives resolves in most modern low floor bus design with level floors throughout the bus. Three to four large doors make it possible for passengers to get on and off the bus very fast without steps - a must in today's public transport and appreciated above all by older citizens, mothers with prams or wheelchair users.