🏎️ Turbocharger Engine Match & Surge Margin Sizer
Calculate turbocharger turbine-compressor energy balance, compressor pressure ratio PR, engine airflow, turbine exhaust backpressure, surge margin, and shaft RPM.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
📊 Solver Telemetry
● ACTIVE
👁️ Consultations
19
⚡ Calculs faits
14
💾 Téléchargements
216
📦 Code Fortran
5.2 KB
📅 Mise en service
Jun 2026
⏱️ Latence
< 1 ms
🌀 Compressor Performance Map, Surge Line & Engine Match
Real-time visual simulation: Operating engine load point on PR vs corrected mass flow map📝 Configuration & Presets
🏎️ 2.0L Gasoline Sports
🚛 12.8L Truck Turbo Diesel
🏁 2.5L Motorsport High-Boost
⚓ 6.6L Marine Aux Genset
Turbocharger Matching Formulation:
• Airflow: ṁair = [Vd·(N/120)·ηvol·Pman] / (R·Tman) [kg/s]
• Compressor Power: Pcomp = [ṁ·cp·T1 / ηc] · [PRc(γ−1)/γ − 1] [kW]
• Shaft Balance: Pturb · ηmech = Pcomp
• Surge Margin: SM = (ṁcorr − ṁsurge) / ṁcorr ≥ 15%.
• Airflow: ṁair = [Vd·(N/120)·ηvol·Pman] / (R·Tman) [kg/s]
• Compressor Power: Pcomp = [ṁ·cp·T1 / ηc] · [PRc(γ−1)/γ − 1] [kW]
• Shaft Balance: Pturb · ηmech = Pcomp
• Surge Margin: SM = (ṁcorr − ṁsurge) / ṁcorr ≥ 15%.
📊 Performance Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & Turbocharging Standards
Turbocharger Power Match & Shaft Balance
The turbine extracts enthalpy from pulsating engine exhaust gases to drive the compressor wheel through a shared shaft with bearing mechanical losses: $P_{comp} = P_{turb} \cdot \eta_{mech}$.
Surge Margin & Choke Limits
Surge occurs at low mass flow and high boost where aerodynamic stall causes audible high-frequency flow reversal. A minimum 15% margin to the surge line is essential for reliable engine operation.
Key Engineering Assumptions
- SAE J1826 gas stand compressor & turbine mapping.
- 4-stroke IC engine volumetric filling formulation.
- Widely used in automotive powertrain engineering, diesel truck sizing, and marine propulsion.