14 new Toyota engines seek 10% gain in mpg: Powertrain overhaul covers 30% of lineup by 2016

摘要

TOKYO - Toyota Motor Corp. will unleash a blitz of 14 new gasoline engines through 2015 in a long-awaited power-train overhaul that aims to boost fuel efficiency by at least 10 percent. The push deploys clean-burning Atkinson cycle engines, once reserved for electric-gasoline hybrids, across the lineup to nonhybrid vehicles in segments from compact to premium. The usual downside of Atkinson cycle engines is low power, but Toyota says it has boosted performance by increasing combustion ratios.