When the vermicular cast iron engine was so mentioned, people would ask, how could he be named king? These origins will start from vermicular cast iron.
Jiangling Weilong engine uses vermicular cast iron
The Three Major Competitive Advantages of Vermicular Cast Iron
Vermicular graphite iron has similar seismic performance, thermal conductivity, and casting properties as gray cast iron, and is far superior to gray cast iron in the following three key properties.
High strength: The tensile strength of vermicular cast iron is 75% higher than that of gray iron, and the fatigue strength is almost twice that of ordinary gray iron. With vermicular iron, the explosive pressure of the engine can be significantly increased, thereby improving fuel economy and power, and reducing emissions.
High rigidity: The rigidity of vermicular cast iron is 45% higher than that of gray cast iron. After the cylinder head uses vermicular cast iron, the deformation of the bore can be reduced, the oil consumption can be reduced, and the NVH performance can be effectively improved.
High wear resistance: Under the same abrasion test, the wear volume of vermicular graphite cast iron is only 45-6%-60% of gray cast iron. After the cylinder body adopts vermicular graphite cast iron, the cylinder linerless design can be adopted to reduce the cost. 　　
King Vermicular Iron's Growth History
As early as 1948, worm-like graphite was found in the invention of nodular cast iron, but as a material research, it was only in the 1960s, and it was applied to trachea, ingot molds, and glass molds.
How can vermicular cast iron have such excellent pedigrees to abandon its development in the engine sector? However, due to its narrow range of creep treatment in production, and the requirement for the engine cylinder head and cylinder head castings to be more than 80%, the production is difficult. Therefore, only after the production technology was improved did it start to be applied in batches on engine block castings at the end of the last century.
However, as a global research center for diesel engine technology, Europe has witnessed the transformation of vermicular cast iron and has become a recognized raw material for the manufacture of cylinder blocks. Nowadays, large European automobile manufacturers have adopted this advanced cylinder block material. Europe is so capricious, how can China be reconciled? China National Heavy Duty Truck with Mann Technology will certainly come to join in the bustle. While MAN Engine guarantees the overall cylinder block, the internal parts of the cylinder block, connecting rods and other mechanical parts adopt an up-breaking process to effectively guarantee the link. The closeness of the surface, so that the entire engine in the fatigue, durability, reliability and other aspects of the performance has been greatly improved, the reason why the Manchester Engine can be so amazing because it is a vermicular cast iron engine. Only with the implementation of China National Heavy Duty Truck, Jiangling's 13L vermicular cast iron engine that went offline on June 2, 2017 was developed and put into operation in parallel with China. It was introduced to China in a rare way with a “zero time difference,†and it also meant the engine of Jiangling Heavy Truck. Will represent the latest technology in Europe.
Jiangling Heavy Truck Vermicular Iron Engine
Of course, the king is more domineering
As a king, of course, for the sake of the people of Limin, the vermicular cast iron engine is fuel-efficient, has a large horsepower, and exhaust emissions are better than those of the National V Standard. For example, Jiangling installed this engine on the heavy truck. The average minimum fuel consumption rate of only 187g/kwh is equivalent to 18% lower diesel consumption than other products of the same type. That means that if you refuel for 1,000 yuan per month, it will Can save 180 yuan. 　　
Jiangling heavy truck with vermicular cast iron engine installed
The cylinder head, crankshaft, camshaft and connecting rod of this vermicular cast iron engine can withstand the mechanical stress and thermal stress of the engine of about 500 horsepower, that is, its maximum horsepower can reach 500 horsepower or more. Based on this advantage Allows drivers to load more cargo at once, achieving a high degree of transport efficiency.
Perhaps many old drivers feel that the emissions will be directly linked to horsepower. In fact, this time, the vermicular cast iron engine will give you a big change. Its emissions are actually 35% lower than that of the National V Standard, and its upgrade to The potential of national VI emissions, that is, your car to check the car that is a matter of minutes.
The vermicular cast iron, the king's direct killer grey iron engine, was born with extraordinary destiny to have a natural mission. Even if this mission allows the drivers to become the same king as vermicular cast iron, it is actually very simple. It would be nice if your own truck had a vermicular cast iron engine.
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