Toyota details powertrain advances in Gen4 Prius; available E-Four system for all-wheel drive
Green Car Congress
OCTOBER 13, 2015
This improvement was enabled in part through the use of a large-volume exhaust gas recirculation (EGR) system and improvements in combustion efficiency and knock control. The exhaust heat recirculation system has also been improved and made more compact, lighter and efficient. New Lithium-Ion or Nickel-Metal Hydride Hybrid Batteries.
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