Didn't see this engine efficiency feature in the original article:
Quote:
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Active thermal management can direct heat as well as cooling to different regions of the engine for faster warmup, more efficient combustion, and high-load cooling.
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Source:
https://www.greencarreports.com/news...on-2-cylinders
This, in combination with the electric water pump, can keep providing cabin heat in cold temperatures even when the engine auto-stop feature is active.
I know most conventional heaters will quickly run out of heat within a few seconds of stopping the engine, if the HVAC blower is still on.