A heavy-duty truck has been running on the coal transportation route for years, where dust is severe, the road is full of ups and downs, and the vehicle needs to start and stop frequently. Under such harsh working conditions, could it be possible that the engine has never undergone major repairs after running for 1.07 million kilometers?
A12N natural gas engine produced by Foton Cummins provided the answer through this disassembly activity: Of course, it is possible.
Durable and capable of traveling over a million kilometers
The core components are in good condition
The on-site disassembly and inspection by experts show that:
1. The core components such as the cylinder head, cylinder block, and pistons are in good condition, and the overall sealing performance is excellent.
2. The mating surface between the cylinder block and the cylinder head is flat and undamaged, with no signs of high-temperature deformation or cylinder liner sinking.
3. There is no leakage in the water and oil circuits.
4. The honing marks on the inner wall of the cylinder block are still clear, indicating good lubrication.
5. The tension of the piston rings is normal, and there is no obvious carbon buildup on the surface.
6. The wear of the intake and exhaust valve seats is minimal, and
7. The camshaft and rocker arms are clean and bright, with no oil sludge or decarburization.
Precision measurement data shows that the core components remain in good condition. After simple maintenance, it still has the potential to continue serving at high intensity. Experts say that achieving 1.07 million kilometers without major repairs under the working conditions of coal transportation is far more difficult than in ordinary scenarios. The disassembly results of this engine fully demonstrate the durability and reliability of Cummins products.
As a deeply collaborative partner in the commercial vehicle industry, Foton Cummins and Foton Auman have always adhered to the forward development of the integrated power of the entire vehicle. Both parties have achieved deep integration from the stage of defining the vehicle boundaries, breaking through the underlying logic of the entire vehicle power chain, jointly completing the decomposition of product indicators and performance calibration. After the "three high" experimental tests, they have achieved better performance release through customized development, which can be adapted to various transportation conditions across the country.
At present, the models of Foton Auman equipped with Foton Cummins' natural gas engines have achieved full coverage of 12L-16L displacement, especially in scenarios such as coal transportation, they have gained wide user recognition.
Where Does "Reliability" Come From?
Exploring the Technical Answers Behind "One Million Kilometers Without Major Repairs"
R&D foundation defines reliability from the source. Relying on Cummins' global gas engine technology accumulation, through multi-dimensional technological upgrades such as combustion system optimization, intake and exhaust efficiency improvement, and friction loss control, it achieves a dual breakthrough in gas consumption and reliability. At the same time, through engine cleanliness control, the oil change cycle is significantly extended, effectively reducing users' maintenance costs.
Intelligent manufacturing safeguards the bottom line of quality throughout the entire process
Foton Cummins ensures the quality consistency of every engine through the full-process control of three core links: key component processing, intelligent assembly, and 100% factory testing.
In the precision processing stage, core components such as cylinder blocks and cylinder heads are all processed in a "dark factory". Advanced equipment combined with strict environmental control guarantees the machining accuracy of every piece of metal without any deviation.
In the intelligent assembly stage, all bolt tightening is done by mechanical arm electric guns, precisely controlling the angle and torque, and relying on the global manufacturing system to achieve full-process traceability.
The test bench is equipped with a triple ultra-low concentration detection mechanism. Each engine must complete the ignition and operation test under the simulated vehicle working conditions and pass before it can be delivered.
At the same time, the dedicated intelligent production line for Foton Cummins' natural gas engines applies unmanned forklifts, robots, 3D vision systems, and intelligent inspection dogs to build a full-process intelligent manufacturing system, which is precisely the foundation for achieving a million kilometers without major repairs.
Good quality + good habits = long mileage
For users, the core demand of running transportation is "saving effort and making money". How to create a record of 1.07 million kilometers without major repairs? Hao Fengfeng, the owner of the Foton Auman ETX from Yangquan, Shanxi Province, has something to say: Due to the extremely dusty coal transportation route, I insist on maintaining the air filter every two to three thousand kilometers and replacing the new filter element every five thousand kilometers. I also keep changing the oil regularly every fifty thousand kilometers. The user's persistence in scientific maintenance, combined with the excellent quality of the Cummins engine itself, makes the equipment maintenance cost lower, the availability rate higher, and the income more considerable.