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Dongfeng Motor Corporation is a Chinese state-owned automobile manufacturer headquartered in Wuhan, China. Traditionally one of the "Big Three" Chinese automakers, Dongfeng is currently in the top four along with Chang'an Motors, FAW Group, and SAIC Motor.In addition to commercial and consumer vehicles, it also manufactures parts and cooperates with foreign companies. Counting six global automakers as partners, it has more Sino-foreign joint ventures than any other Chinese carmaker. These partnerships allow it to produce and sell a variety of foreign-branded products in China including those of Citroën, Honda, Kia, Nissan, Peugeot, and Renault. Other brand names associated with Dongfeng include Fengshen, Infiniti, Luxgen, and Venucia. Heavy-duty commercial vehicles and buses are sold under the eponymous Dongfeng brand.The company was the second-largest Chinese vehicle maker in 2014 by production volume manufacturing over 3.5 million whole vehicles that year. Commercial vehicle production was higher than all other domestic manufacturers at nearly 450,000.Dongfeng has two listed subsidiaries—Dongfeng Motor Group Co and Dongfeng Automobile Co Ltd .Dongfeng is sponsoring the Chinese entry for the 2014–2015 Volvo Ocean Race, round-the-world sailing race. Wikipedia.

Deng X.H.,Hubei University of Automotive Technology | Cai J.,Dongfeng Motor Group
Advanced Materials Research | Year: 2014

The paper established an involute slope modification model of asymmetric spur gear pair. the characteristic of the involute slope modification was analyzed by changing different modification parameters. the contact stresses of asymmetric spur gear under different modification parameters were compared. research results showed that the modification parameters influence the meshing performance of gear pairs. © (2014) Trans Tech Publications, Switzerland. Source

Zhao J.,Huazhong University of Science and Technology | Zhang H.,Dongfeng Motor Group
Proceedings - 2010 7th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2010 | Year: 2010

When ship docks at harbor or other sea area, both the robustness and dynamic properties of course control system are required strictly. Because the model parameters are relative to the speed and load of the ship, it is difficult to design a good controller based on the ship model. This paper combines internal model control with fuzzy neural network to design a course system. First, it designs a zero steady-state error controller which ensures robustness of the course control system relay on inner model. For the zero steady-state error controller, it is necessary to reduce the dynamic properties of the control system to ensure the robustness. Thus, this paper uses fuzzy neural network to adjust the pole sites of the closed control system based on the ship course and course change rate. It designs a new structure of fuzzy neural network which uses neural network to represent the fuzzy rules. According to expert experiences, it also gives out the weights computation method of fuzzy neural adjuster. At last, the hybrid course control system is applied in a actual ship and the course response curves indicate that the course control system possess good robustness and dynamic properties. ©2010 IEEE. Source

Su C.Q.,Wuhan University of Technology | Ye B.Q.,Wuhan University of Technology | Guo X.,Wuhan University of Technology | Hui P.,Dongfeng Motor Group
Journal of Electronic Materials | Year: 2012

The potential for thermoelectric exhaust heat recovery in vehicles has been increasing with recent advances in the efficiency of thermoelectric generators (TEGs). This study analyzes the acoustic attenuation performance of exhaust-based TEGs. The acoustic characteristics of two different thermal designs of exhaust gas heat exchanger in TEGs are discussed in terms of transmission loss and acoustic insertion loss. GT-Power simulations and bench tests on a dynamometer with a high-performance production engine are carried out. Results indicate that the acoustic attenuation of TEGs could be determined and optimized. In addition, the feasibility of integration of exhaust-based TEGs and engine mufflers into the exhaust line is tested, which can help to reduce space and improve vehicle integration. © 2012 TMS. Source

Yang K.,Dongfeng Motor Group
Jinshu Rechuli/Heat Treatment of Metals | Year: 2010

Microstructure, fracture morphology, hardness of failure gear made of SCM420H steel were analyzed by optical microscopy, scanning electron microscopy and Rockwell hardometer respectively. The results show that the main failure cause are insufficient hardness on the surface and overhardening in the core of crankshaft gear after heat treatment. Source

Song Y.,Wuhan University of Technology | Hua L.,Hubei University of Automotive Technology | Chu D.,Dongfeng Motor Group | Lan J.,Hubei University of Automotive Technology
Materials and Design | Year: 2012

A novel approach has been proposed to characterize the inhomogeneous mechanical properties of weld materials by using the micro-Vickers hardness test combined with the rule of mixture. This proposed method has introduced the influences of the inhomogeneous properties of weld materials by considering the variations in plastic behaviour across the weld cross-section. The inhomogeneous properties of laser welding beams for tailor welded blanks (TWBs), which were three different types of combinations of DX56D and DP600 automotive steel sheets, were extracted by using this proposed method. The instrumented indentation tests were conducted to verify the measured inhomogeneous properties of weld materials. The fact that the calculated true stress-strain curves agreed well with the experimental ones has confirmed the reliability and accuracy of the proposed method. © 2011 Elsevier Ltd. Source

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