3-MW-Class New Engine "DX77" Begins Testing
Mass Production Targeted for 2028; Durability and Efficiency Enhanced
Build 1-MW-to-3-MW Product Lineup by 2029

HD Construction Equipment is accelerating development of a 3-MW-class diesel engine for power generation to meet rising electricity demand from AI data centers.

HD Construction Equipment President Moon Jaeyoung (center) and other officials pose for a commemorative photo at the start-up ceremony for the ultra-large power-generation diesel engine "DX77" at the Gunsan Campus. HD Construction Equipment

HD Construction Equipment President Moon Jaeyoung (center) and other officials pose for a commemorative photo at the start-up ceremony for the ultra-large power-generation diesel engine "DX77" at the Gunsan Campus. HD Construction Equipment

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HD Construction Equipment said on October 15 that it recently held a startup ceremony for its DX77 generator engine at its Gunsan Campus and has begun full-scale performance and durability testing.


The DX77 is a diesel engine with a displacement of 77 liters and maximum output of around 3 MW, making it the largest model the company has developed. Its maximum output is enough to meet the average electricity demand of about 7,000 households. Mass production is targeted for 2028.


The engine is a high-speed model that operates at 1,800 revolutions per minute. Its high output relative to its size allows it to be installed in less space. It is designed to maintain stable performance during extended operation through the use of high-strength, wear-resistant materials and a high-efficiency cooling system. The filter replacement interval has also been extended to 1,000 hours, making maintenance easier.


HD Construction Equipment is also expanding its range of power-generation engines. It currently produces the 1-MW-class DX22 engine at its Incheon plant. At its new engine plant in Gunsan, scheduled for completion at the end of October, the company plans to begin mass production of new products in stages, starting with the 1.5-MW-class DX37 engine in early 2027. It aims to build a lineup of 1-MW-to-3-MW products by beginning mass production of the 2-MW-class DX50 engine in 2029. The new Gunsan plant will have an annual maximum production capacity of 1,250 units.


The company also plans to expand its gas engine lineup, targeting the North American market, where demand for on-site power generation is growing amid the expansion of AI data centers and delays in connecting to the power grid. The DX77 was also designed with the potential for future adaptation to use a range of fuels, including gas and hydrogen.



Moon Jaeyoung, president of HD Construction Equipment, said, "The DX77 is an important product that will take the competitiveness of our generator engine business to the next level. Through rigorous performance and durability testing, we will improve the product's quality and secure new growth drivers in the global power-generation market."


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