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Modding since 2024

API Referencevepowertrain

Turbocharger

Exhaust-driven forced induction compressor. Uses exhaust gas energy to spin a turbine-compressor assembly, increasing intake air pressure for significant power gains with characteristic turbo lag.

Exhaust-driven forced induction compressor. Uses exhaust gas energy to spin a turbine-compressor assembly, increasing intake air pressure for significant power gains. Features realistic turbo spool-up dynamics (turbo lag), wastegate control, and blow-off valve simulation. Typically a sub-module of the Combustion Engine.

Public API

VariableTypeDescription
isExistingbooleanWhether a turbocharger is installed on this engine.
turboAVnumberCurrent angular velocity of the turbo shaft (rad/s).

Hooks

HookDescription
initInitializes the turbocharger from JBeam data and links to the parent engine.
updateGFXUpdates boost gauge values and audio each frame.
updateFixedStepPhysics-rate update for spool dynamics and pressure calculations.
turboUpdateCore turbo physics step (spool, wastegate, compressor map).

Usage Example

-- Access via the engine device
local engine = powertrain.getDevice("mainEngine")
if engine.turbocharger and engine.turbocharger.isExisting then
  local turboRPM = engine.turbocharger.turboAV * 9.549
  log("I", "turbo", "Turbo RPM: " .. turboRPM)
end

See Also

  • Supercharger — Engine-driven alternative (no lag)
  • Nitrous Oxide Injection — Chemical boost
  • Combustion Engine — Parent engine device
  • Combustion Engine Thermals — Thermal effects

Torsion Reactor

Stator/reactor element within a torque converter assembly. Redirects fluid flow to multiply torque during acceleration, then freewheels at coupling speed.

Viscous Clutch

Speed-sensitive coupling that transfers torque based on the rotational speed difference between input and output. Used in center differentials and AWD systems for passive torque distribution.

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Public APIHooksUsage ExampleSee Also