Syngas vs Natural Gas | Turbocharged SI Engine – MATLAB Two-Zone Simulation
📘 Description
This video builds a two-zone combustion model in MATLAB to compare Syngas (H₂/CO blend) versus Natural Gas (NG) in a turbocharged spark-ignition (SI) engine. We simulate in-cylinder thermodynamics, heat release, and emissions with a modern workflow that you can reuse for coursework or research.
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What’s inside
✅ Two-zone model (burned/unburned) with Wiebe heat-release, variable γ, and Woschni/Annand heat transfer
✅ Boosted operation: intake pressure/temperature from compressor map (simplified)
✅ Mixture properties for Syngas vs NG (LHV, Cp(T), laminar burn trends via Wiebe tuning)
✅ Knock margin proxy (end-gas T–p and ignition delay correlation)
✅ Full plots: P–θ, T–θ, HRR–θ, MFB–θ, V–θ
✅ Performance: Brake Power, Torque, BSFC, BTE vs RPM/CR/ϕ/Boost
✅ Emissions trends: NOx, CO, CO₂, UHC vs ϕ (phenomenological)
✅ Comparative dashboards: Syngas vs NG (NA vs Turbocharged)
Why it matters
Syngas enables fast burning and lean operation; turbocharging recovers power while controlling BSFC. This model shows trade-offs in efficiency, emissions, and knock tendency across boost and equivalence ratio.
Who should watch
UG/PG/PhD students in IC engines, clean fuels, and powertrain modeling
Researchers evaluating alternative gaseous fuels under boost
MATLAB users building custom engine simulators & maps
What you’ll learn
Setting up a robust two-zone SI model in MATLAB
Calibrating Wiebe parameters from burn duration / MFB points
Conducting parametric sweeps (CR, ϕ, RPM, boost) and reading the results like a dyno
Chapters
00:00 Intro & goals
01:05 Two-zone theory (burned vs unburned)
03:10 Fuel property setup (Syngas vs NG)
05:20 Turbocharging assumptions & compressor inlet states
07:10 Heat release & heat transfer models
10:30 Knock margin proxy
12:00 Results: P–θ, T–θ, HRR–θ, MFB–θ
15:00 Performance & emissions comparisons
18:00 Key takeaways + next steps
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