10 Sets of MTU Series 4000 High-Voltage Generator Sets Fully Restored After 48-Hour Emergency Repair for Data Center

A large domestic computing data center recently suffered power failure risks, with 10 high-power MTU Series 4000 16V4000G63 diesel generator sets encountering unstable fuel supply and frequent shutdowns simultaneously. The core servers of the computer room faced outage risks, and the operation team immediately launched a special repair project complying with original equipment standards.

Upon arrival, the repair team conducted inspections set by set with exclusive MTU fault diagnostic tools. The root cause was confirmed: long-term 24-hour full-load operation of the computer room, coupled with high humidity and salt spray in coastal areas, aged the sealing parts of unit fuel pipelines, water seeped into fuel circuits and tanks, disrupted normal operation of fuel injection systems, and caused excessive voltage fluctuation.

Six senior engineers were split into three groups to carry out parallel operations, including fuel tank drainage, fuel filtration & purification, full replacement of sealing components, air tightness inspection of oil circuits, and full-load commissioning. The staff worked in two shifts without interruption, and all critical spare parts were original matching parts, with all maintenance procedures following official MTU specifications.

After only 48 hours, all 10 MTU high-voltage generator sets passed three rounds of no-load, half-load and full-load tests. Oil pressure, water temperature and voltage stability all returned to factory standards. Load response speed and harmonic control meet ISO G3 power supply standards for data centers, and the redundant emergency power system of the computer room regained full protection capacity.

Core Advantages of MTU Generator Sets

1.Outstanding Durability & High Power Output: MTU Series 4000 units feature a 30,000-hour major overhaul interval and support continuous operation under 100% rated load, ideal for high-reliability scenarios such as AI computing centers and large financial parks.

2.Precise Electronically Controlled Fuel Supply: High-pressure common rail electronic injection system limits voltage fluctuation within ±1% to shield precision loads including servers and storage devices from current surges.

3.Wide Environmental Adaptability: Optional original kits for salt mist, high temperature and high altitude enable stable operation in coastal regions, northwest mining zones and hot southern industrial parks.

4.Intelligent Monitoring System: Built-in data acquisition modules upload oil pressure, oil temperature and fault codes to remote operation platforms in real time to send early warnings of aging pipelines and sealing parts.

Statement from Project Manager

The person in charge of the repair project stated that MTU high-power units have strict requirements on fuel cleanliness and pipeline tightness. Regular oil circuit maintenance is necessary for coastal projects. The efficient repair was supported by mature original maintenance systems and standardized spare parts inventory. A quarterly special inspection plan will be customized for this data center to avoid similar failures and guarantee non-stop emergency power supply all year round.

Industry Insight

With the accelerated construction of supercomputing and AI data centers nationwide, the installation volume of MTU high-power generator sets as core backup power sources keeps rising. Equipment such as oil circuits and cooling systems wears faster in coastal high-corrosion environments than inland areas. Regular preventive maintenance can drastically cut sudden shutdown risks and economic losses caused by data interruption.