Why don't cars have exhaust heat recovery systems?


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Why don't cars have exhaust heat recovery systems?

  1. 3 months ago
    Anonymous

    because its barely even worth it to have an exhaust velocity recovery system (turbocharger)

    there's been lots of inventions in this space that have failed to pass the test of economy in the long term.

    https://en.wikipedia.org/wiki/Napier_Nomad

    your best source of intake pressure is your pistons and your best recovery of exhaust is to run at a fixed rpm where your exhaust shockwave adds to your compression. Everything else is just trying to extend the envelope of good performance.

    • 3 months ago
      s10fag

      is this basically a 2 way supercharger that forces air in the intake and sucks exhaust out the exhaust?

  2. 3 months ago
    Anonymous

    Yes it does exist in some cars, like newer Toyota hybrids example Prius 2011 and newer.

  3. 3 months ago
    Anonymous

    The turbocharger is an exhaust heat recovery system.

  4. 3 months ago
    Anonymous

    Isn't heat needed for the cat to work
    Decreasing the exhaust gas temperature would probably increase emissions

  5. 3 months ago
    Anonymous

    I think my car has one because the engine gets warm in less than a minute.

  6. 3 months ago
    Anonymous

    significantly increased complexity for diminishing returns

  7. 3 months ago
    Anonymous

    What's my Civic going to use steam for?

    • 3 months ago
      Anonymous

      Torque, dumbass.

      • 3 months ago
        Anonymous

        How? Adding a whole steam piston setup like locomotives had to it somehow?

        • 3 months ago
          Anonymous

          Yes, you idiot!

          • 3 months ago
            Anonymous

            A car that was steam from the start is very different than making a gasoline/steam hybrid

            • 3 months ago
              Anonymous

              No it isn't. Just replace the coolant with water to make steem

  8. 3 months ago
    Anonymous

    An exhaust driven accessory belt would be cool.

  9. 3 months ago
    Anonymous

    Majority of cars do, but the point is to reduce recycled exhaust's temperature. And as a bonus allow the engine to heat up faster and give the cabin heat faster

  10. 3 months ago
    Anonymous

    Cost outweighs benefit.

  11. 3 months ago
    Anonymous

    It exists in formula 1 but the announced death of the ICE cooled any desire to spend billions on adapting the technology to road cars.

  12. 3 months ago
    Anonymous

    they want cancer rates up

  13. 3 months ago
    Anonymous

    Mine does

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