China Yuchai Launches Zero-Carbon Ammonia Engine with Diesel-Scale Efficiency for Heavy Trucks
China Yuchai introduced a high-pressure, direct-injection pure ammonia internal combustion engine for heavy-duty commercial vehicles, integrating an ammonia-to-hydrogen generation system with pre-chamber jet ignition. The engine achieves thermal efficiency comparable to top-tier diesel units while delivering zero-carbon power and competitive lifecycle costs.
1. High-Pressure Direct-Injection Ammonia Engine
China Yuchai introduced its first high-pressure, direct-injection pure ammonia internal combustion engine designed for heavy-duty commercial vehicles, integrating an ammonia-to-hydrogen conversion system with pre-chamber jet ignition.
2. Diesel-Parity Efficiency and Cost Advantages
The engine delivers thermal efficiency comparable to top-tier heavy-duty diesel units while providing zero-carbon operation, leveraging lower total lifecycle costs to offer a competitive ownership model for long-haul transport.
3. Strategic Implications and Future Plans
This technological milestone expands Yuchai’s low- and zero-carbon powertrain portfolio under China’s Dual Carbon objectives, highlights ongoing R&D in ammonia propulsion, and prepares the company for commercial rollout in global heavy-vehicle markets.