YTO Dongfanghong products cover three, four, and six cylinders with a displacement of 2L-13L and a power coverage of 18-450kW. They are widely used in agricultural machinery, construction machinery, generator sets, boats and other fields. In the fourth stage of the non-road country, Dongfanghong diesel engine not only achieves emission upgrades, but also comprehensively improves product reliability, power performance, operating economy and NVH.

At this exhibition, YTO Dongfanghong will exhibit LR4A construction machinery configuration, LR4A explosion-proof machine configuration, LR4M3W gas engine, YM6S and other products. Take the Dongfanghong LR4A non-road country four diesel engine as an example. It adopts the technical route of CRS+CAC+EGR+DOC+DPF, with a power coverage of 80-150 horsepower, a torque reserve of more than 30%, strong power, and economical and fuel-efficient. The products in this exhibition are not complete, mainly the explosion-proof machine of the national three in construction machinery. Our newly developed platform is a small product of YTN3, mainly for 70-150 horsepower rural machinery. Its power. The size and speed can satisfy most receiving machines, and the speed requirements of receiving machines will be higher. Its speed can be from 2200 to 2600, and its supporting range will be wider. Also, YT5 is also the latest product. It has not yet been launched in batches. It uses bias technology and will improve in terms of power. Both products use a 4-valve structure. It has improved and optimized the gold medal machine system. The latest The horsepower of the tractor has reached 140 to 200, and it can be matched with a 220-horsepower receiver, because the horsepower and torque of the receiving machine are relatively stable.

Our full line of products use national-style fuel systems. They are relatively more mature in terms of technology, including our electronic control systems are also national-style. This product is compact in structure, small in size, light in weight, and supporting systems. higher. This is our national three machinery. On the basis of national three, some explosion-proof capabilities have been improved. Because it is electronically controlled, there will be some gas in the underground mine. The requirements for electric spark and high temperature are relatively high, including fuel injectors. , Electric control and other systems need to be upgraded, as well as cranes, generators, exhaust pipes, all need to be explosion-proof treatment, and explosion-proof transport vehicles need to go down the well, this is our upgraded product. There are also explosion-proof transport vehicles that need to go down the well. This car is relatively lighter than our current National III product with the same horsepower. The main product is 4A. It has been processed on the basis of National III and added 1+2 emission control components. Upgrade to National IV emission requirements. We use the 1+2DPF post-processing route for this loader. This route is more convenient for the user's later maintenance, because it does not require urea, so the operating cost is relatively low. This machine is our largest displacement machine. The largest market is also a tractor. There are not too many products in this horsepower segment in the domestic market, which can be equipped with 380-568 horsepower. At present, the state of the machine is still in the third state, and the state four has not been involved.

At present, National IV will switch to National IV after December 1, 2022. National IV is now the basic technology is mature, and we have begun to prepare for the technical research of National V emissions, and respond to national requirements in the technical field of emission control. . For products with low noise, Dongfanghong has introduced a series of measures, including over-optimized gear train, gear type and form structure. For emission control, it adopts treatment muffler to control, and optimizes the noise generated by the engine body. Began to focus on low-noise products.

Nowadays, I currently use the 1+2d, ucdpf plus sc2 emission control system for the National V route, which mainly reduces emissions to control emissions and reduce emissions of pollutants. The difference between urea and non-urea is: the main purpose of using urea is to neutralize the twisting substances in the exhaust gas with large emissions. Due to the large displacement, there will be more harmful substances. For low-horsepower products, we use the e+docd method to control emissions, which can basically meet the requirements of National IV. The working method of 1+2 is to reuse unburned gas under high-temperature combustion of the engine to reduce emissions. For the production and assembly process of our main engine, its control system will also be simpler.

Since the product is mainly tractor, we have not made a breakthrough in the field of hydrogen energy. For tractors, our supporting experience will be more abundant. In terms of tractor structure, the engine block, the oil pan, and the front and rear connections are better. This is what we are. In the past few years of development, competitors include Shangchai and Weichai. Now our Dongfanghong has reached a new level of user acceptance.Editor/XingWentao