Jiangling Heavy Truck New Power Produces Vermicular Cast Iron Engine

Standing on the shoulders of giants, Jiangling heavy-duty truck engine has many superior performances at birth and has a very strong advantage in terms of fuel consumption and NVH. This is because Jiangling Motors , a joint venture of Ford Motor Co., Ltd. in China, takes full advantage of Ford's technological superiority. It is a heavy-duty engine with a high-performance 9L/13L Ecotorq creeper cylinder head taken from Ford.

In order to overcome the technical problems in the manufacture of creep cylinders for cylinder block cylinders, JMC introduced the most advanced Swedish SinterCast manufacturing technology, digested and absorbed, and finally formed its own core competitiveness. After more than two years of hard work, Jiangling’s scientific research team has won one national-level invention patent and two utility model patents. Currently, Jiangling has completely mastered the core technology of vermicular iron production and control, and has created completely independent intellectual property rights. JMC comparison method vermicular iron control technology.

Jiangling's heavy-duty engine vermicularizer cylinder head can be stabilized more than 80%, the key part is even as high as 95%. All of the components have passed the DV test, engine bench and vehicle performance and endurance test in accordance with Ford's development flow and technical requirements. On June 2, 2017, JMC's heavy-duty engine was officially released at the Taiyuan engine plant. , Started mass production.

Jiangling’s heavy-duty engine has officially gone offline in Taiyuan’s engine factory and mass production begins. Jiangling’s heavy-duty engine has officially gone offline in Taiyuan’s engine factory and mass production begins.

Jiangling Heavy Truck's 9L/13L vermicular cast iron engine was put into operation, ending the domestic heavy-duty truck engine which has not stabilized the production of vermicular cast iron. It has filled a technical gap in the application of domestic heavy truck engine metal materials. Jiangling Heavy Truck's vermillion iron body won the gold medal at the 14th China International Foundry Exhibition for its highest honor in the foundry industry.

Jiangling Heavy Truck's vermillion iron cylinder won the gold medal in the casting industry at the 14th China International Foundry Exhibition Jiangling Heavy Truck's vermillion iron cylinder won the gold medal in the casting industry at the 14th China International Foundry Exhibition

But what exactly is a vermicular cast iron engine so attractive to the eye?

For heavy-duty engine cylinder heads, gray cast iron is traditionally used. The technology of gray iron is very stable and mature, and the cost is relatively low.

However, with the advancement of science and technology, people's needs are constantly improving, and people are constantly putting forward higher requirements for many aspects such as fuel economy, power performance, emission performance, light weight, and high horsepower of heavy trucks.

To increase engine performance and reduce emissions at the same time, the main way is to increase the explosion pressure in the cylinder, but increasing the explosion pressure will bring additional thermal load and mechanical load to the engine block. The traditional gray cast iron cylinder head cover material lacks load resistance and becomes a bottleneck restricting engine performance.

In order to further improve engine performance, engineers began to look for high-performance alternative materials. It was found that vermicular cast iron is the best material for a new generation of high-performance engines. 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.

Casting of vermicular cast iron Casting of vermicular cast iron

However, the casting of vermicular cast iron is not easy to achieve. To ensure the good quality of the engine, the critical parts of the cylinder head of the spiral cylinder must reach more than 80% of the rate of vermicularization, and it is difficult for the traditional casting technology to obtain such a high rate of vermicularization stably.

Technological problems are often the driving force for technological progress and development. With the continuous efforts of countless people for decades, the technical bottleneck of vermicular cast iron has gradually been broken. In the 1990s, Sweden's Sintercast Corporation has developed a new type of vermicular iron production technology that can be very stable and has a high rate of vermicularization.

In this century, the use of vermicular cast iron on European heavy-duty engines has become quite common, and manufacturers such as Man, Duff, Mercedes, Volvo, Ford, and Caterpillar have applied vermicular iron material to cylinder heads in batches.

Mass production of vermicular cast iron engines in foreign markets Mass production of vermicular cast iron engines in foreign markets

Ford Motor Co., Ltd. has been an advocate and pioneer of vermicular cast iron technology. At the 2016 North American International Auto Expo (NAIAS), Ford and SinterCast's vermicular graphite cast iron diesel engine was highly acclaimed on the Ford Ace F-150 pickup, 2017 The model F150 pickup truck will be equipped with a vermicular cast iron cylinder 3.6-liter V6 turbo diesel engine and a 2.7-liter graphite-iron cast iron EcoBoost gasoline engine. The EcoTorq engine on the Ford Cargo heavy truck currently sold in Europe and South America uses vermicular cast iron.

The EcoTorq engine on the Ford Cargo heavy-duty truck is also made of vermicular cast iron. The EcoTorq engine on the Ford Cargo heavy-duty truck is also made of vermicular cast iron.

Comparing with the overheating of foreign countries, the application of vermicular cast iron in domestic heavy-duty engines started late. At present, the development of vermicular cast iron engines by domestic heavy-duty truck manufacturers is still in the stage of research and trial production. Large-scale mass production is limited.

As a Jiangling heavy-duty engine with inherent advantages, the domestic heavy-duty truck industry is in need of a rising star like Jiang to bring about change and innovation, let us wait and see for this highly competitive product.

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