Modular range extender

  • 17-Jul-2009 02:10 EDT

The AVL pure range extender is an autonomous auxiliary power unit added to pure electric-drive vehicles to extend the operational range beyond that obtainable in the pure electric mode. The modular design combines compact size, weight, and packaging with competitive production costs and system efficiency. Depending on the specific customer production background and product needs, the internal combustion engine (ICE) can be designed as a two- or four-stroke piston engine or, for lowest NVH and best compactness, as a rotary engine. Due to the specific drivetrain system layout, the electric system and the ICE can be optimized for single point operation. Range extender-specific requirements include: lowest NVH, compact design, and high power/weight ratio; a dependable system, i.e., available after long periods of inactivity; and reduced system lifetime and load response requirements compared to standard ICEs.

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