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PROFESSIONAL ENGINE
SIMULATION FEATURES

PISTON combines professional-grade accuracy with real-world validation to deliver a simulation platform you can trust.

VIRTUAL DYNO SYSTEM

Environmental Correction

  • SAE J1349 standard correction
  • DIN 70020 standard correction
  • Industry-standard environmental compensation
  • Accurate power measurements across conditions

Operating Modes

  • TIME_BASED: Realistic acceleration simulation
  • STATIC: Direct calculation for validation
  • Configurable inertia modeling
  • Advanced loss modeling (friction + windage)

Real-World Validation

<7% Error Rate

Tested against certified GM dyno data for LS3 6.2L V8. 52 dyno tests with 19,071 assertions verified.

LS3 6.2L V8LSA Supercharged2JZ-GTE Turbocharged

REAL PARTS DATABASE

GM LS Family

  • → LS1, LS2, LS3, LS7
  • → LSA, LS9 (Supercharged)
  • → LT1, LT4 (Gen V)
  • → Compatible components

Honda B/K Series

  • → B16A, B18C (VTEC)
  • → K20A, K24A
  • → High-rev components
  • → Turbo applications

Small Block Chevy

  • → 350, 383 stroker
  • → Classic components
  • → Aftermarket support
  • → Budget builds

Intelligent Compatibility

  • Automatic bore spacing validation
  • Valve clearance checking
  • Physical fitment verification
  • Cost-benefit analysis with pricing data

PHYSICS-BASED THERMODYNAMICS

Thermodynamic Engine

  • Two-zone combustion model
  • Wiebe function implementation
  • Heat transfer to cylinder walls
  • Multiple fuel support (gasoline, E85, race gas)

Mechanical Systems

  • Slider-crank kinematics
  • Chen-Flynn friction modeling
  • Force analysis (cylinder pressure → torque)
  • Valvetrain mechanics

Professional Validation

222
Tests Passing
19,071
Assertions Verified
70%+
Code Coverage

Professional-grade testing with comprehensive validation against real-world dyno data.

USER INTERFACE

Clean, terminal-inspired interface with real-time visualization

Coming in Phase 2: Dear ImGui Interface

Planned Features

  • Real-time performance graphs and dyno curves
  • Interactive parts browser with compatibility checking
  • Configuration save/load management
  • Export data to CSV and other formats

Design Philosophy

  • Focus on data density and clarity
  • Keyboard shortcuts for power users
  • Cross-platform native performance
  • Minimal distractions, maximum information

SAMPLE OUTPUT

Performance Curves

RPM | Power (HP) | Torque (lb-ft)
2000 | 125.3 | 328.4
3000 | 215.7 | 377.2
4000 | 305.1 | 399.8
5000 | 385.2 | 403.9
6000 | 445.8 | 389.5
7000 | 462.1 | 346.0

Example: LS3 6.2L with mild cam upgrade

Validation Report

Configuration: LS3 Stock
Peak Power: 430 HP @ 5900 RPM
Peak Torque: 424 lb-ft @ 4600 RPM
Validation vs GM Dyno:
Mean Error: 4.2%
Max Error: 6.8%
R² Correlation: 0.985

Validated against certified dynamometer data

Comprehensive Data Export

All simulation results can be exported to CSV format for further analysis in Excel, Python, MATLAB, or your preferred data analysis tools. Full thermodynamic state data available for advanced users.

DEVELOPMENT ROADMAP

PHASE 2 • MONTHS 4-6

Enhanced Models & GUI

  • → Improved combustion modeling
  • → Enhanced volumetric efficiency
  • → Brake dyno with PID control
  • → Dear ImGui graphical interface
PHASE 3 • MONTHS 7-9

Forced Induction

  • → Turbocharger modeling with maps
  • → Supercharger simulation
  • → Boost control systems
  • → Intercooler effectiveness
PHASE 4+ • PRODUCTION MVP

Advanced Systems

  • → ECU simulation (fuel/ignition/boost)
  • → Component failure prediction
  • → Transmission and drivetrain
  • → Comprehensive cost calculator

READY TO BUILD?

Start testing your engine configurations today.

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