自主研制！我国突破氨燃料发动机关键技术

Core Viewpoint - The launch of China's first ammonia-powered vessel marks a significant advancement in ammonia energy technology, transitioning from laboratory research to practical application in shipping [1][2]. Group 1: Technological Breakthrough - The core power system of the ammonia-powered vessel consists of two 12V240H-DFA ammonia fuel engines developed by CRRC Dalian Company, showcasing breakthroughs in ammonia fuel supply, injection, combustion, emissions, and safety [1]. - The ammonia fuel engines have achieved over 80% diesel replacement rate during practical application, with exhaust emissions meeting the national second-stage standards and ammonia escape concentration within regulations [1]. Group 2: Engine Specifications and Environmental Impact - The ammonia fuel engine has a single-cylinder power output of 208 kW, with an ammonia energy ratio of 85%, leading to an 80% reduction in carbon emissions [2]. - The engine employs low-pressure electronic multi-point injection for ammonia and high-pressure electronic injection technology for diesel, allowing precise control of fuel supply [2]. Group 3: Industry Implications - The successful demonstration of the ammonia fuel engine indicates that China has mastered key technologies in ammonia fuel engines, facilitating a full industrial chain collaboration from components to applications [2]. - CRRC Dalian Company aims to promote multi-scenario applications and technological iterations of high-power ammonia fuel engines, contributing to the green transformation of China's shipping industry and advancing towards a zero-carbon future [2].