Torque Limitation Device

In Simple Terms

F1 cars can use a special passive device in the drivetrain that protects engine components by allowing temporary changes in gear ratio when extreme torque forces exceed 520Nm. This safety feature only activates under extreme stress and doesn't require active control.

• The device is passive and dissipative, meaning it works automatically without active control to absorb excess energy
• It only functions above 520Nm of torque (measured at crankshaft speed) to prevent damage during sudden torque spikes
• It temporarily changes the speed ratio to protect drivetrain components from breaking under extreme forces
• This is a permitted protective mechanism in the F1 technical regulations