ENGINE SIMULATION
FOR EVERYONE
Professional-grade thermodynamic modeling validated against real dyno data. The same physics as $10,000+ tools — free and open source.
SEE IT IN ACTION
Real thermodynamic simulation running in your browser. Adjust RPM and watch the four-stroke cycle.
LIVE ENGINE CYCLE
CORE FEATURES
Built from first principles with the same physics used by GT-POWER and Ricardo WAVE.
Virtual Dyno System
Validated inertia dyno simulation with SAE J1349 correction. Tested against certified GM dyno data with <7% error rate.
Real Parts Database
50+ real parts from GM, Honda, and more. Automatic compatibility checking, valve clearance validation, and pricing data.
Physics-Based Modeling
Two-zone combustion with Wiebe function, Chen-Flynn friction, slider-crank kinematics, and multi-fuel support.
UNDER THE HOOD
No magic numbers. Every calculation is traceable to published engineering literature.
Thermodynamic Engine
- Two-zone combustion with Wiebe burn profile
- Woschni heat transfer correlation
- Multiple fuel support (gasoline, E85, race gas)
- Volumetric efficiency modeling
Mechanical Systems
- Slider-crank kinematics and dynamics
- Chen-Flynn friction model
- Reciprocating mass inertia
- Cam profile and valvetrain analysis
VALIDATED AGAINST REAL DATA
Not just theoretical — tested against certified dynamometer results from real engines.
Error Rate
Across multiple RPM points tested against certified GM dyno data
R² Correlation
Near-perfect correlation between simulated and measured power curves
Validated Engines
LS3 6.2L V8, LSA supercharged, and 2JZ-GTE turbocharged platforms
HOW WE COMPARE
| FEATURE | PISTON | GT-POWER | WAVE |
|---|---|---|---|
| Price | Free | $10,000+/yr | $8,000+/yr |
| Physics-Based | ✓ | ✓ | ✓ |
| Real Parts DB | ✓ | — | — |
| Open Source | ✓ | — | — |
| Dyno Validation | <7% error | <5% error | <5% error |
| Learning Curve | Hours | Months | Months |
ROADMAP
Active development with new features shipping regularly.
Enhanced Models & GUI
- → Improved combustion modeling
- → Enhanced volumetric efficiency
- → Brake dyno with PID control
- → Dear ImGui interface
Forced Induction
- → Turbocharger modeling
- → Supercharger simulation
- → Boost control systems
- → Intercooler effectiveness
Advanced Systems
- → ECU simulation
- → Failure prediction
- → Transmission modeling
- → Cost calculator
START SIMULATING
Free and open source. No registration required.
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