Recently, after nearly a decade of technical research, the Domestication of Large Mining Truck Engine led by Zhunneng Group passed the first phase of acceptance review, marking a major breakthrough in China’s core power equipment sector for large mining trucks.
At the acceptance meeting, expert panel unanimously agreed that the 2MW domestic engine developed by the project had completed 18,000 consecutive operating hours in Heidaigou Open-pit Coal Mine. With all technical indicators meeting or exceeding the requirements specified in the contract, the engine possessed full benchmarking capacity against imported products.
The project team addressed a series of core challenges during the R&D. It independently developed the “zero-eddy current high-volume airway” to enhance thermal efficiency, and designed the WISE10 electronic control unit to break the communication protocol barrier between domestic engines and the original control system of mining trucks. It also pioneered stress design technologies such as “precise surface profile compensation”, effectively addressing long-standing industrial reliability challenges including piston carbon accumulation, pin sticking and abnormal bearing wear. In addition, it made breakthroughs in vermicularizing treatment and testing technology for large vermicular castings, realizing independent high-precision manufacturing of key parts such as complex engine blocks and cylinder heads.
