Core Viewpoint - The article discusses the successful completion of the "Hydrogen Natural Gas (HCNG) Internal Combustion Engine Key Technology Research and Demonstration Application" project in Inner Mongolia, highlighting advancements in HCNG technology and its implications for the energy sector [3][11]. Group 1: Project Overview - The project was led by Inner Mongolia Dongyuan Technology Co., Ltd., with participation from several prestigious institutions including Tsinghua University and Xi'an Jiaotong University [3]. - The project team developed a comprehensive database for HCNG fuel characteristics and established a chemical reaction kinetics model for HCNG [4]. Group 2: Technical Achievements - The team successfully created a fully functional and advanced HCNG internal combustion engine test platform, capable of testing hydrogen blending ratios from 0% to 100%, filling a domestic gap [5]. - Two types of HCNG internal combustion engines for power generation were developed, with effective power outputs of 500 kW and 1500 kW, achieving thermal efficiencies greater than 42% [7]. Group 3: Research and Recognition - The project team applied for over 50 invention patents and published more than 100 high-level academic papers, receiving accolades from several academicians for their advancements in HCNG combustion theory [11]. - The project was recognized as a priority support project by the National Development and Reform Commission, providing significant policy backing for HCNG technology innovation and product development [11].