The cross of the Eastern Red Diesel engine! Wonderful and visible

A few days ago, at the "Non-road National Four Diesel Engine Product Exchange Conference" hosted by Daejeon Farm, when was the "non-road national four-emission standard" implemented? Deputy Director Wang Tao of the Mobile Source Department of the Ministry of Environmental Protection of the Ministry of Environmental Protection participated in the exchange and answered questions on the implementation standards, roadmaps and regulatory details of the company's concerns.

Exchange meeting

Dongfang Red Diesel Engine relies on its own vertical integration industry chain to provide detailed installation reminders for the whole machine enterprise, providing a complete guide for the whole machine enterprise.

Dongfanghong's National Fourth Research and Development Road

As early as 2015, Dongfang Red Diesel Engine began to develop non-road four diesel engines. The development of non-road four diesel engines is not only an upgrade of emissions, but also reliability, power, economy and NVH of diesel engines. Comprehensive improvement, in-depth research on gas distribution system, fuel system, aftertreatment system, diesel engine body strengthening, DPF regeneration technology, intelligent ECU control technology.

R&D workshop

In 2017, the company upgraded the main body of Dongfanghong common rail diesel engine, designed a new integrated layered water jacket cylinder head, built-in machine-cooled reinforced body, further optimized the cylinder head structure, and adopted high-strength alloy cast iron to meet 18MPa high-explosion. Pressure demand; application of the new generation Bosch high-pressure common rail fuel system, using CAE analysis technology to optimize structural strength, designing new structure combustion chamber for weight reduction and vibration reduction, optimizing eddy current ratio air passage, multiple injection, and ω-type low vortex combustion chamber, Improve oil and gas mixing quality, improve combustion efficiency, reduce vibration and noise, and achieve energy saving and emission reduction.

In order to continuously improve the quality and consistency of production, Dongfang Red Diesel Engine completed the transformation and upgrading of the assembly intelligent production line in 2017, realizing the automatic assembly and on-line inspection of important and key processes. The whole line is equipped with crankshaft workstation, cylinder handling robot, and front Oil seal press, camshaft guide, valve oil seal press, valve lock press, automatic gluing machine, etc. 39 sets of automatic/semi-automatic equipment and 53 sets of Atlas electric tightening devices, effectively guarantee assembly quality and consistency Sex.

The Dongfang Hongfei Road State IV diesel engine includes 9 series of LR and YM series products with a power range of 70-550 hp. Dongfanghong Diesel Engine and BOSCH strategically cooperate to promote the development of non-road national four diesel engines. The typical prototypes of DOC+DPF+SCR and EGR+DOC+DPF technical routes are all implemented by BOSCH “turnkey” project, including fuel system and aftertreatment. System design, diesel engine and vehicle calibration and calibration work, Bosch's advanced technology and products are integrated with China's high-reliability product platform and application experience, and have completed the "one-word type" for non-road machinery. Post-processing structure setting, 500-hour safety regeneration strategy calibration, post-processing matching calibration, bench emission calibration, -25 °C cold storage calibration test, vehicle site calibration test.

"One-word" post-processing structure prototype

The whole machine is equipped with development

In terms of complete machine support, Dongfang Hongfei Road State IV diesel engine and China National Diesel Engine have the same supporting structure. The host customer does not need to change the structure of the whole vehicle, and only the post-processing system can be upgraded. At present, it has completed the matching structure and complete machine installation of the typical tractor and harvester of China's one-to-one 70-240 horsepower. At the same time, it is also carrying out supporting development work with more than 30 domestic agricultural machinery and engineering machinery mainframe factories.

Diesel engine product map

The tractors supporting the Dongfanghongguo four diesel engine will be put into operation in small batches this spring to conduct a comprehensive evaluation of the adaptability and reliability of the diesel engine, ensuring the full production preparation for the batch production and listing in September 2019, providing users with high Quality non-road country four diesel engines. (Hu Shujing)