Max Boost Before a Charge-Air Temperature Limit

boost = ambient x ([1 + eff x (T_out/T_in - 1)]^(1/0.283) - 1). An 80 F inlet, 70% compressor, 250 F limit tops out near 15 psi; a more efficient compressor or a cooler inlet buys more. Compressor-outlet temp (ignores intercooling). A planning estimate; the compressor map and engine build govern.

PR = [1 + (efficiency/100) x (T_out/T_in - 1)]^(1/0.283); max_boost = ambient_psia x (PR - 1); temperatures absolute (Rankine). The charge-air-temperature model solved for the boost.

Turbocharger charge-air-temperature model (compressor-map sizing; ideal-gas adiabatic compression with gamma = 1.4) solved for the boost, first-principles, by name; the compressor map and the engine build govern.

The pressure-ratio and adiabatic-temperature relations are first-principles thermodynamics; the temperatures, efficiency, and ambient come from the application and the compressor map.

Estimate. AHJ and licensed professional govern.

Field names used by the API: max_charge_temp_f, inlet_temp_f, compressor_eff_pct, ambient_psia, max_boost_psi, pressure_ratio

• Gauge boost PR uses absolute pressures; max_boost = ambient x (PR - 1) recovers the gauge boostcompressor-map sizing
• Heat of compression solves T_out = T_in x [1 + (PR^0.283 - 1)/efficiency] for PRadiabatic compression (gamma = 1.4)
• No intercooler the limit is the compressor-outlet temperature, not the post-intercooler manifold temperaturescope of this tile