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ELFA – The economic and intelligent way to zero emission

ELFA is a modular drive system featuring extremely high flexibility. This means that the vehicle manufacturer can configure the hybrid drive according to its individual requirements. Fuel consumption and emissions can be substantially reduced through optimum combination and smart energy management.

LOREM IPSUM DOLOR SIT AMET
LOREM IPSUM

LOREM IPSUM

LOREM IPSUM DOLOR SIT AMET

LOREM IPSUM DOLOR SIT AMET, CONSECTETUR ADIPISCING ELIT, SED DO EIUSMOD TEMPOR INCIDIDUNT UT LABORE ET DOLORE MAGNA ALIQUA. UT ENIM AD MINIM VENIAM, QUIS NOSTRUD EXERCITATION ULLAMCO LABORIS NISI UT ALIQUIP EX EA COMMODO CONSEQUAT. DUIS AUTE IRURE DOLOR IN REPREHENDERIT IN VOLUPTATE VELIT ESSE CILLUM DOLORE EU FUGIAT NULLA PARIATUR. EXCEPTEUR SINT OCCAECAT CUPIDATAT NON PROIDENT, SUNT IN CULPA QUI OFFICIA DESERUNT MOLLIT ANIM ID EST LABORUM.

Benefits at a glance

  • Significantly reduced energy consumption and emissions
  • Zero-emission operation in inner city areas possible
  • Noticeable reduction in noise
  • Greater comfort thanks to gentle, smooth start-up
  • Extremely reliable and low-maintenance traction systems
  • A single source for all components: the motor, generator, inverter, and controller
  • Modular hybrid system for maximum flexibility and cost-effectiveness
  • Proven technology
  • Futuristic

Energy mix for ELFA applications

In addition to the electrical components, a hybrid drive generally comprises a power source – such as an internal combustion engine or a fuel cell – and an energy storage device such as a battery or an ultracapacitor. Using the ELFA traction system, vehicle manufacturers can fulfill all of their power mix requirements.

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Hybrid drive with internal combustion engine

With this hybrid drive, the power comes from a generator that is driven by an internal combustion engine. Energy storage devices are used to recover the braking energy. The power of the energy storage device, e.g. the battery or ultracapacitor, is combined with the traction motor and generator power. Innovative converter technology and intelligent energy management permit the fuel consumption and emissions to be significantly reduced. The attractiveness of the vehicle is further increased due to the fact that noise is reduced and the comfort level improved. An automated start-stop function for the internal combustion engine permits battery operation with no associated emissions - e.g. for sensitive inner-city areas.

Hybrid drive with fuel cell

With this hybrid drive, the energy is generated from a fuel cell. Energy storage devices are used to recover the braking energy. The power of the energy storage device (e.g. battery or ultra capacitor) is combined with the traction motor and the fuel cell power. Innovative converter technology and intelligent energy management allow the fuel consumption to be significantly reduced. The attractiveness of the vehicle is further increased by a significantly lower noise level and improved levels of comfort.

Battery drive

For the battery drive, the energy is provided from just a battery. Modern high-energy batteries have a high power density; whereby it is especially important to note that the kinetic energy of the vehicle can be fed back into the batteries when braking. In conjunction with the innovative ELFA drive and converter technology – coupled with an efficient concept for the auxiliaries, daily range targets for vehicles can be achieved without any intermediate charging. The battery drive has no emissions and also provides a very high degree of comfort as a result of the low noise levels.

The flexible ELFA System

The vehicle manufacturer can freely select an internal combustion engine - or fuel cell and energy storage device. Furthermore the modules open a variety of combinations to adapt to the specific requirements of every vehicle (such as weight, acceleration, speed).

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Traction Module

ELFA traction motors and generators can be mechanically integrated in a flexible fashion in various ways. Traction modules are available for vehicle weights extending from approx. 7 up to 28 tons. This means that a traction power range from approx. 50 kW up to approx. 300 kW can be realized. Today, to a large extent, so-called induction traction motors are used. These can be very cost-effectively manufactured as they are closely related to industrial motors. These traction motors can also be connected to the standard axle of a vehicle through a gearbox. Alternatively, a version is available for city buses, where the induction traction motor is  directly integrated in a low floor bus axle. In addition to induction motors, innovative  and especially efficient permanent-magnet synchronous motors are also being used.  These motors set themselves apart as a result of their high torque and they can drive the  differential of the drive axle without requiring a gearbox. These types of motor have a  very high efficiency - especially at low speeds (city traffic). The well-proven second  generation of ELFA converters ensures that all traction motors operate with the highest  efficiency. All of the traction components have been optimized for operation in mobile  applications. This takes into consideration both climatic loads and stresses as well as  other issues such as e.g. shock and jolts.

Technical data overview

  • Approx. 50 to 300 kW continuous traction power
  • Fulfills all of the requirements in the commercial vehicle area  (temperature, environment, vibration, etc.)

Power Generation Module

In addition to the energy storage device, a hybrid vehicle also has a power generator –  either an internal combustion engine or a fuel cell. The Power Generation Module of the  ELFA Hybrid System includes all of the components necessary to convert an internal  combustion engine into an “Onboard power station” – to provide the electrical energy for  the traction motors. The generators required for the purpose are coupled to the internal  combustion engine and controlled using a second generation ELFA converter.  The generators are available in a power range from approx. 50 KW up to approx. 260 kW.  A fuel cell can be coupled to the hybrid system using suitable components –  so-called DC/DC converters. All of the Power Generation Module components are  optimized for operation in mobile applications. This takes into account the climatic stress  as well as other loads and stress such as shocks and jolts.

Technical data overview

  • Generator power of approx. 50 to 260 kW
  • Fuel cells up to approx. 200 kW can be coupled
  • Fuel cells up to approx. 200 kW can be coupled

Examples of successful projects – our references

LOREM IPSUM 1

LOREM IPSUM DOLOR SIT AMET

LOREM IPSUM DOLOR SIT AMET, CONSECTETUR ADIPISCING ELIT, SED DO EIUSMOD TEMPOR INCIDIDUNT UT LABORE ET DOLORE MAGNA ALIQUA. UT ENIM AD MINIM VENIAM, QUIS NOSTRUD EXERCITATION ULLAMCO LABORIS NISI UT ALIQUIP EX EA COMMODO CONSEQUAT. DUIS AUTE IRURE DOLOR IN REPREHENDERIT IN VOLUPTATE VELIT ESSE CILLUM DOLORE EU FUGIAT NULLA PARIATUR. EXCEPTEUR SINT OCCAECAT CUPIDATAT NON PROIDENT, SUNT IN CULPA QUI OFFICIA DESERUNT MOLLIT ANIM ID EST LABORUM.

LOREM IPSUM

LOREM IPSUM DOLOR SIT AMET 1

LOREM IPSUM DOLOR SIT AMET, CONSECTETUR ADIPISCING ELIT, SED DO EIUSMOD TEMPOR INCIDIDUNT UT LABORE ET DOLORE MAGNA ALIQUA. UT ENIM AD MINIM VENIAM, QUIS NOSTRUD EXERCITATION ULLAMCO LABORIS NISI UT ALIQUIP EX EA COMMODO CONSEQUAT. DUIS AUTE IRURE DOLOR IN REPREHENDERIT IN VOLUPTATE VELIT ESSE CILLUM DOLORE EU FUGIAT NULLA PARIATUR. EXCEPTEUR SINT OCCAECAT CUPIDATAT NON PROIDENT, SUNT IN CULPA QUI OFFICIA DESERUNT MOLLIT ANIM ID EST LABORUM.

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