The Digest’s 2025 Multi-Slide Guide to Plasma-Assisted Pre-Chamber Ignition System for Highly Dilute Stoichiometric Heavy-Duty Natural Gas Engines

This research develops a next-generation plasma-assisted pre-chamber ignition system for highly dilute stoichiometric heavy-duty natural gas engines. Key technology includes nano-second pulsed plasma igniters and CFD modeling to optimize prechamber geometry and increase dilution tolerance. The innovation aims to achieve ≥48% Brake Thermal Efficiency, improving efficiency by ≥7% compared to baseline natural gas engines. This enables natural gas engines to reach parity with diesel engine thermal efficiency, reducing total ownership costs.