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  1. lhuang8

    Impact of engine firing torsional excitation on Powertrain Bending

    Thanks for replying Greg. A little off the topic here, are there any conferences that you recommended for NVH ? especially for automotive industry. Thanks,
  2. lhuang8

    Impact of engine firing torsional excitation on Powertrain Bending

    yes, I think the standard margin is sqrt(2) times whatever the frequency is? I was referring to isolator between engine flywheel and transmission input. so like a torque converter clutch damper. or a coupling after engine flywheel. Thanks,
  3. lhuang8

    Impact of engine firing torsional excitation on Powertrain Bending

    Hi Greg, Thanks for replying. I was talking about 3rd order of inline 6 or 2nd order of inline 4 etc. Does engine torsional needs to be considered for deciding powertrain bending frequency target? Say the max engine speed is 3600 rpm for inline 6, should powertrain bending frequency target...
  4. lhuang8

    Impact of engine firing torsional excitation on Powertrain Bending

    when considering powertrain bending frequency target. Does engine fundamental firing order play a whole lot in the game? I did some research on papers and saw lots of ujoint (driveline 2nd) and imbalance but didn't find much engine torsional vs. powertrain bending. If any, I saw consider the...

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