Quote:
Originally Posted by cRiPpLe_rOoStEr
Maybe I got it the wrong way, but I've seen some claims that it keeps the intake charge colder and that it was the reason why Toyota retained a regular port-injection instead of upgrading to direct injection in the current generation of the Prius.
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Port injection vs direct lowers the intake temperature somewhat. This is offset a bit by the heated charge being pumped back into the intake from the cylinder.
I am interested to see where Toyota goes in future updates of this series of engines.
Simon