ZF-EcoLife transmission and TopoDyn Life control to improve Indian City Bus mobility

ZF EcoLife transmission advanced technology has been incorporated into buses to help lower fuel consumption and improve mobility options. The ZF transmission is a 6-speed transmission which offers lowered fuel consumption, reduction of emissions and extended service. The ZF EcoLife transmission has been designed keeping in mind future regulations of CO2 emissions and fuel consumption parameters.

The EcoLife Transmission has been designed to help lower costs related to technical problems associated with oil changes and servicing. This is so as incorporation of this transmission module into the bus system will lower engine stress levels considerably. This technology has been incorporated in the Volvo 8400 bus which is being use as transportation in Mumbai, Navi Mumbai and Delhi.

The new transmission provides for passenger comfort, lower fatigue as also quick lockup of torque converter which leads to lowered fuel consumption. Topography-dependent TopoDyn Life control software has also been used in conjunction with ZF EcoLife transmissions. Lowered emissions, optimum fuel usage, elaborate braking and higher torque factors make this technology a great asset to improve City Bus transport and ‘Go green’.

In the image above – ZF-EcoLife not only reduces vehicle noises and fuel consumption: Its innovative cooling concept makes the transmission fit for higher cooling water temperatures of engines with Euro 6 Exhaust Emission Standard.

Read the press release below for more information.

News Release

ZF-EcoLife transmission, set to improve City Bus mobility, for growing Indian Megacities

ZF offers 6-speed automatic transmissions for buses with new TopoDyn Life control software as a standard
Superior driving performance combined with low fuel consumption, excellent passenger comfort, maximum reduction of emissions and noise & extended service life

Advanced technological engineering can provide a sustainable solution to tackle the increasing traffic and pollution levels in a fast growing country like India. And, ZF – EcoLife transmission is designed keeping these requirements of current & future emission standards for further CO? reductions and fuel savings while meeting the economical targets through improved Life cycle cost (LCC).

ZF Friedrichshafen AG developed the EcoLife transmission keeping in mind the increasing demands on modern city buses.The focus was on the central requirements of vehicle operators pertaining to the effi­ciency, or the LCC (costs for operating, maintenance, repair and replacement parts). In terms of the technical require­ments, LCC are significantly affected by fuel consumption, life span and reliability, brake and cooling systems, as well as oil change intervals.

Currently, this technology,ZF-Ecolife, is available in India in the Volvo 8400 low floor CNG city Bus, which is undergoing trials in Mumbai with Brihan Mumbai Electricity Supply & Transport Undertaking (BEST). Similar trials of  Volvo 8400 low floor CNG city Bus equipped with ZF-Ecolife has already been sucessfully run with Delhi Transport Corporation (DTC) in Delhi and Navi Mumbai Municipal Transport (NMMT) in Navi Mumbai.

ZF-EcoLife has considerable advantages over manual transmissions when it comes to comfort for both the passenger & the driver: Frequent starting, maneuvering, or operation at crawling speed optimally suit the transmission application.

A new technology permits a quick lockup of the torque converter – the fuel-intensive hydraulic driving phases are shortened correspondingly, which leads to lower fuel consumption. Due to the modified cooling concept, ZF-EcoLife is designed for modern engines complying with all emission standards known today. The new and extremely strong integrated CityBus retarder can be used for braking processes, so service brakes are protected and service costs are reduced as a result. Thanks to the precise planetary gearset, gears change smoothly; the gear spacing of the 6-speed transmission supports swift acceleration without impairing passenger comfort. The latter is even improved by the fact that transmission noise is reduced to a minimum due to the planetary gearsets’ helical teeth.

As a standard, the ZF-EcoLife transmissions have now also been programmed with the new topography-dependent TopoDyn Life control software. The continuously variable shifting program guarantees the transmission’s optimal operation at any point of the route. This process is enabled by means of individual shift points that are calculated in line with the respective route profile and the driving resistances.

25 percent higher torque, 15 percent higher operating temperature, considerably higher braking force, and about five percent less fuel consumption than its predecessor: with ZF-EcoLife, public transportation authorities that want to extend their capacities in the future can likewise increase performance, economy, and passenger comfort. Thus, ZF-EcoLife once again a makes considerable contribution to “Green Cities”. This refers not only to lower fuel consumption and therefore lower exhaust emissions; the for the first time helical-cut ZF-EcoLife planetary gearset clearly reduces noise for passengers in the bus and for pedestrians when the bus is driving by.