Search

Your search keyword '"Du, Farong"' showing total 39 results
Start Over Author "Du, Farong"
39 results on '"Du, Farong"'

27. Energy recovery based on pedal situation for regenerative braking system of electric vehicle.

Author

Ji, Fenzhu, Pan, Yong, Zhou, Yu, Du, Farong, Zhang, Qi, and Li, Guo

Subjects
REGENERATIVE braking, ELECTRIC vehicles, BRAKE systems, ENERGY consumption, ELECTRIC drives
Abstract

Energy recovery is a key technology to improve energy efficiency and extend driving range of electric vehicle. It is still a challenging issue to maximise energy recovery. We present an energy recovery mode (mode A) which recovers braking energy under all situations that accelerator pedal (AP) is lifted, brake pedal (BP) is depressed, as well as AP and BP are released completely; and propose a control strategy of regenerative braking based on driver's intention identified by a fuzzy recognition method. Other two modes: (1) recovery braking energy only the BP is depressed (mode B), (2) no energy recovery, have been studied to compare with mode A. Simulations are carried out on different adhesion conditions. Recovered energy and driving range are also obtained under FTP75 driving cycle. Road test is implemented to validate simulation results. Results show that mode A can improve energy recovery by almost 15.8% compared with mode B, and extend driving range by almost 8.81% compared with mode B and 20.39% with the mode of no energy recovery; the control strategy of regenerative braking can balance energy recovery and braking stability. The proposed energy recovery mode provides a possibility to achieve a single-pedal design of the electric vehicle. [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
View/download PDF

33. Simulation investigation on coupled heat transfer of cylinder of high-altitude air-cooled engine

Author

Du Farong, Ding Shuiting, and Tang Zijie

Subjects
Materials science, business.industry, Mechanics, Heat sink, Thermal conduction, Heat capacity rate, Cylinder (engine), law.invention, Physics::Fluid Dynamics, law, Heat transfer, Position-sensing hydraulic cylinder, Aerospace engineering, business, Air-cooled engine, Heat engine
Abstract

In this paper, the heat transfer of cylinder for air-cooled engine was simulated according to the theory of the fluid-solid coupled heat transfer. According to this theory, the heat conduction between the cylinder and cylinder liner was considered as internal condition of the system, which can make the simulation simple and convenient, compared with the experiment result, it show that coupled analysis was reliable about the heat transfer of cylinder. Considering the whole working condition of the aerial vehicle, the simulation of the heat transfer of the cylinder within the working altitude was carried out, establishing a basis for going a step further of the cylinder heat transfer.

Published
2011

34. Simulation Study on Fluid-Solid Coupled Heat Transfer of Cylinder of Small Aerial Two-Stroke Air-Cooled Engine

Author

Ding Shuiting, Tang Zijie, and Du Farong

Subjects
Physics::Fluid Dynamics, Stirling engine, law, Chemistry, Heat transfer, External combustion engine, Position-sensing hydraulic cylinder, Mechanical engineering, Heat sink, Air-cooled engine, law.invention, Heat capacity rate, Cylinder (engine)
Abstract

Based on one small aerial two-stroke air-cooled engine, combined with characteristic of heat transfer and discipline of combustion, the heat transfer of cylinder for air cooled engine was simulated according to the theory of the fluid-solid coupled heat transfer. In this theory, the heat conduction between the cylinder and cylinder liner was considered as internal condition of the system, which can make the simulation simple and convenient, compared with the experiment result, it show that coupled analysis was reliable about the heat transfer of cylinder.

Published
2011

35. Optimized Simulation Method and Experimental Verification on Dynamic Analysis of a Light Truck Frame

Author

Guoyan Xu, Feng Gao, Du Farong, Lei Tian, and Yonghua Xiong

Subjects
Engineering, Modal, business.industry, Modal analysis, Reliability (computer networking), Frame (networking), Structural engineering, Suspension (vehicle), business, Geometric modeling, Stability (probability), Finite element method
Abstract

The three-dimensional geometric model of the fringe-beam frame had been built based on the frame structure of a light truck. In order to optimize the frame structure, the finite element model of the frame and the suspension system were set up. Considering the influence of suspension on frame dynamic performance, the modal properties of the frame model was analyzed in the commercial analysis program ANSYS, using two different methods. Based on the experiments, it was verified that combining MPC184 elements and spring elements Combin14 is a better way to simulate suspension compared to using spring finite elements only. Furthermore, the combined simulation results coincide with experimental modal analysis results, which were conducted thereafter. Subsequently, the frame stress-strain distribution rules and dynamics response were calculated under the random road spectrum excitation, and the frame dynamic parameters were obtained. This study provides some theoretical bases for frame structure improvement, and proposes an optimum method to simulate suspension. The results have direct significance in ensuring the stability, comfort and reliability of a light truck frame.Copyright © 2009 by ASME

Published
2009

Catalog

Books, media, physical & digital resources
See catalog results