Today Toyota released some information regarding their new generation of naturally aspirated engines.
There are two engines are mentioned in the news. One is 1.3L and another 1.0L. Key points:
– Atkinson burning cycle (10% better fule economy)
– VVT-iE valve technology (previously only available on Lexus LS sedan)
– High compression ratio of 13.5:1 for 1.3L and 11.5:1 for 1.0L
– Stop-start technology
– Direct fuel injection is not required (but it can still come with DI)
– Speical design intake ports makes combustion more rapid
– Cooled EGR system to reduce emissions
– 1.3L engine thermal efficiency: 38%; 1.0L efficienty: 37%. Compared to old engines of 35%
– Modified pis...
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