Paul Hansel

Tag: automotive

  • A TrailerTail for every EV?

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    paul
    in

    For a little over a decade, the rare sight of a passive aerodynamic modifier could be seen on highways across America. Depending on your vantage point, it could look like the tail of the Enterprise Space Shuttle… or perhaps a deflated pastry box. TrailerTail® was a hand-operated origami structure that reduced aerodynamic losses at highway…

  • Popping the tire pressure monitoring relearn tool bubble

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    by

    paul
    in

    [2024-07-06: Updated to include simulation results and more scope traces.] If you own a car, you’ve no doubt encountered this mystery at least once. The tire pressure monitoring system tells you your flat tire is on the driver’s side front, but it’s actually on the passenger side rear. This is a relatively modern car ownership…