Combustion Lab provides an interactive, web‑based engine dynamics simulator, version 2.0. The tool models a four‑cylinder, turbocharged engine with a bore of 82.5 mm, a stroke of 92.8 mm, a compression ratio of 9.6:1 and a displacement of 1.98 L. It supports boost up to 120 kPa and a redline of 6800 rpm. Each operating point runs a single‑zone, crank‑angle‑resolved thermodynamic model that integrates the first law of thermodynamics in 0.5° steps. Heat release follows a Wiebe curve, with parameters adjusted for engine speed and mixture, while wall losses are estimated using the Woschni correlation, friction using the Chen–Flynn model, and pumping loss calculated from exhaust backpressure. Knock is evaluated with the Livengood–Wu integral and the Douaud–Eyzat induction‑time correlation. The simulator reports power of 92.5 kW, torque of 276 N·m, brake specific fuel consumption of 234 g/kWh, as well as BMEP, volumetric efficiency, MAP, boost, air‑fuel ratio, fuel flow, brake thermal efficiency, peak pressure and exhaust temperature. The model is zero‑dimensional, uses single‑zone temperatures, does not simulate wave dynamics in the intake or exhaust, and only evaluates steady‑state conditions, making it suitable for educational and concept‑development purposes rather than design certification.