The new 7-speed automatic transmission ZF EcoLife Offroad has been redesigned and optimized for oil and gas production. It enables particularly economic operation and handles more than 2,600 newton meters of engine torque. ZF EcoLife Offroad is the new and improved successor generation of the Ecomat product line, which has been successfully deployed worldwide for decades.
With the new ZF EcoLife Offroad, ZF has designed a transmission system specifically for the harsh requirements in oil and gas production, such as in pumping systems, workover and coil tubing rigs, cementing and acidizing units. The transmission system is precisely tailored to the respective facility and takes care of clutch actuation and shifting work for the user. An electronic monitoring system prevents any operating error.
Efficient basic transmission
ZF EcoLife Offroad measurably improves the dynamics and controls more than 2,600 newton meters of engine torque, which is transmitted without interruption in tractive force. This transmission is thus perfectly compatible with current as well as future engine generations.
When it comes to other important criteria, the new ZF transmission also offers clear advantages over comparable competitor products. In conjunction with the new torque converter with integrated torque converter lock-up clutch, a smooth launch and quiet operation are ensured even at low engine speeds. The torque converter lock-up clutch can already close near idle speeds. Thus the transmission is highly efficient and reduces fuel consumption. The integrated torsional damper filters and dampens unwanted engine vibrations already before the transmission. Its helical toothed planetary gearsets make this automatic transmission very quiet.
Smart Driveline Torque Control
ZF EcoLife Offroad can also accommodate potential auxiliary power units. Two power take-offs with a combined torque of 1,000 newton meters are available as an optional feature. The transmission control unit with Smart Driveline Torque Control enables best performance, since the engine is guided along the permissible converter turbine torque. The torque is controlled throughout the entire driveline and at every operating point, especially when powerful secondary loads must be operated. If the vehicle manufacturer sends all torques taken from the power take-offs to the transmission via the CAN bus, the transmission control will regulate the engine so that the driveline consisting of the transmission, cardan shaft and pump unit is never overloaded.
Thanks to Smart Driveline Torque Control, the ZF EcoLife transmission works together with engines which would otherwise require a much larger transmission. This saves costs, weight and valuable installation space.
The ZF EcoLife Offroad basic transmission only has a dry weight of about 450 kilograms and requires very little valuable installation space with its length of approximately 900 millimeters. At 732 millimeters, the ZF EcoLife Offroad compact version has been substantially shortened once more and weighs only 390 kilograms in its most powerful version.
The integrated ZF retarder decelerates the masses to be braked without interruption during the shifting process. This hydrodynamic, wear-free permanent brake effectively contributes 1,900 newton meters of braking torque and prolongs the service life of the service brakes, thus making a significant contribution to reducing operating costs.
Viable for the future
ZF EcoLife Offroad features a dual cooling system, which integrates a transmission oil cooler as well as another oil cooler for retarder and converter operation. This configuration makes the ZF automatic transmission viable for the future for another important reason: It has been designed from the ground up to accommodate the higher cooling water temperatures required by new engines in order to meet increasingly stringent emission standards such as Tier 4 final or Euro 6. Last but not least, ZF EcoLife Offroad helps make stationary facilities for oil and gas production more cost-efficient and environmentally friendly.
To keep wiring work to a minimum, the control unit is directly mounted onto the transmission. Programmed specifically in each case, it communicates with other vehicle components via a standardized CAN bus interface (CAN SAE J1939).