Comments by "John Burns" (@johnburns4017) on "Why Does Volkswagen Have A Water-Cooled Exhaust?" video.

  1.    All this could have been done decades ago. Too late. All ICEs are now obsolete. EVs will take over soon and fast. Hydrogen fuel cells for: trucks, trains, ships, etc.
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  2. This engine has less time on choke improving emissions.
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  3. Just a bigger radiator. A real fast heat up though. Great for cold climates.
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  4. Use waste exhaust heat to drive a Stirling? May as use the fuel to heat the Stirling directly. Continuous burn is far more efficient...and cleaner.
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  5.  @PrivateSi  An ICE is not more efficient than a Stirling engine. Stirling engines are bigger and heavier, another is that a good cooling capacity is needed, meaning a very large radiator. Reasons that is why they never caught on. Having a Stirling off an ICE engine's exhaust is highly inefficient. A small Stirling off say a large ship's engine's exhaust maybe beneficial.
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