Toyota to launch 14 new gasoline engines through next year

Article by Andrew Christian, on April 16, 2014

Toyota Motor Corp. will roll out 14 new gasoline engines through next year as part of powertrain overhaul aimed at boosting fuel efficiency by at least 10 percent. Toyota is adopting Atkinson cycle engines from its electric-gasoline hybrid vehicles to its non-hybrid vehicles. Toyota admitted that Atkinson cycle engines typically have lower power, but said it has boosted performance by increasing combustion ratios.

Shouji Adachi, project general manager of powertrain planning, remarked that the usual challenge in Atkinson cycle engines lies in lower torque performance, but remarked that they were able to resolve those issues in the new engines. The 14 new engines will cover around 30 percent of Toyota's lineup by next year.

Engines with direct injection and turbocharging will also be derived from the new technology, Adachi said. The first two small-displacement engines -- a 1.0- and a 1.3-liter engine -- are expected to be fitted in non-hybrid compact cars bound for Japan.

The new engines will be Toyota's first Atkinson cycle power used in a nonhybrid and the first developed at the carmaker’s new 12-story r&d center Powertrain Joint Development Building. Toyota's more efficient engine come as other carmakers like Honda Motor Co. and Mazda Motor Corp. revamp their engine lineups to comply with stricter fuel economy regulations.

Honda's Earth Dreams engines employ direct injection technology and turbocharging while Mazda's new Skyactiv engines use pair fuel injection and high combustion ratios. Toyota wants the new engines to be at least 10 percent more fuel efficient than the power plants. Adachi remarked that customers would not feel the improvement unless a 10-percent increase is achieved.

Topics: toyota, petrol, engine

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