Inerter

nounStandard termAutomotive

A suspension component that resists acceleration and helps control tire load fluctuations.

A mechanical shock-absorbing device used in advanced suspension systems that provides a force proportional to the relative acceleration across its terminals. Originally developed for motorsport, it uses a flywheel mechanism to store kinetic energy, effectively acting as a mass damper without adding significant weight to the vehicle. This helps keep the tire contact patch stable over uneven track surfaces.

Heard on the job

We adjusted the inerter to settle the rear end down over the curbs during high-speed cornering.

Also heard as

  • J-damper