Next-generation hydraulic hybrid Volvo excavators include EC260 Hybrid, EC300 Hybrid, EC370 Hybrid, EC400 Hybrid, and EC500 Hybrid. The hybrid versions deliver up to 20% better fuel efficiency than conventional predecessors and a 15% reduction in carbon emissions.
Hydraulic hybrid technology harvests “free” energy generated by the down motion of the excavator’s boom. The machine uses this boom-down motion to charge the accumulator; then uses the stored energy to drive the assist motor when needed, in turn powering the engine system.
The new electro-hydraulic system requires fewer hoses and couplings, minimizing maintenance requirements and costs while increasing reliability, according to Volvo.