When drivers expressed frustration with anti-idling regulations, Jacobs’ engineers developed a device to improve start-up and shutdown engine technology.  Active Decompression Technology™ (ADT™) allows drivers to experience smoother start-ups and engine shutdown without engine-induced cabin vibration.  


  • Eliminates engine-shutdown-induced cabin vibration 
  • Improves driver satisfaction
  • Increases engine cranking speed for easier start-up
  • Improves cold start
  • Lowers cranking torque & current draw
  • Reduces starter system wear
  • Simple, cost effective design