OALib 期刊
  OALib Journal (ISSN Print: 2333-9705, ISSN Online: 2333-9721)是一本多合一的开源期刊,以同行评审的方式出版发行文章,其所涵盖的研究领域多达311种领域。本刊发表的全部文章均可在期刊网站上免费阅读、下载、引用和传播。单篇文章出版费用为99美元。详情请咨询[email protected] 或 QQ: 3279437679。现在就去投稿!
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Mar 20, 2019Open    AccessArticle

Geometric Accuracy Design Method of Roller Cavity Surfaces for Net-Shape Rolling Compressor Blades

Qichao Jin, Wenhu Wang, Ruisong Jiang, Zongyan Cai, Datao Li
The accurate shape of roller cavity surfaces is vital part for net-shape rolling. This paper presents a new design method of roller cavity surfaces with high accuracy for rolling compressor blades based on the geometrical inheritance and evolution of the net-shape profiles. Firstly, a process model of the blade is modeled by adding process allowance and locating basis at the CAD (Comput-er Aided Design) model of th

Jan 25, 2019Open    AccessArticle

Numerical Analysis of the Physical Properties of the Flow of Molten Polymers in Grooved Profiles

Sérgio Rodrigues Morais Jr., Diego Alves de Miranda
There is a wide field of research on the physical properties of non-isothermal pseudoplastic fluid flow. These researches help to avoid processing failures in the fields of thermoplastics. The present work presents the effects of flow inside cavities with groove profiles. For the simulations, the Ansys fluent software was used, considering steady-state flow without incompressible fluid slip. The government equations used in the si

Jan 10, 2019Open    AccessArticle

Investigation of the Effects of Air-Conditioning System on the Temperature and Speed of Automobile Engine Using Paired T-Test and Regression Analysis

Olufemi Sylvester Bamisaye, Anthony Yinka Oyerinde, Ubong Akpan Essien
This study investigated the effect of air-conditioning system on the tem-perature and speed of automobile engine before and after the air-conditioning system was put to use, while the vehicle was at static position. A 16-valve Nissan engine was used for this study, the engine was first run for 20 minutes before the data are collected. In the first case, the temperatures (℃) of the engine were taken in the interval o

Dec 20, 2018Open    AccessArticle

Exhaust Condensate Treatment Technology Based on Acoustic Levitation

Fuqiang Zhang, Zhao Guan, Hao Jiang
In view of the condensed water droplets falling into the ground in winter, the automobile exhaust pipe in the cold area brings hidden dangers to the urban traffic safety. The research on the development of the car exhaust pipe condensate on-board treatment device is carried out. The reaction process of engine combustion and the main components of exhaust gas were analyzed. The working principle of ultrasonic suspension device was

Dec 11, 2018Open    AccessArticle

Oil Film and Pressure Characteristics of the Friction Pair

Shan Hu
In order to improve the friction performance of the valve plate and improve the oil film bearing capacity of the valve plate, the influence of the fluid-solid coupling on the performance of the oil film of the valve plate was studied. The lubrication characteristics of the surface texture of the valve plate was studied systematically based on the theory, simulation and coupling effects. In this paper, the geometrical model of hydr

Nov 27, 2018Open    AccessArticle

Noise Simulation Analysis of a Variable Displacement External Gear Pump and Unloading Groove Optimization

Yongkang Zhou, Wenwu Li, Dongpo Yang
The oil pump is an important part of vehicle engine, whose noise and vibration characteristics affect the engine performance significantly. The noises generat-ed by both the pressure and flow fluctuations are the main contributors to the oil pump noise. In this paper, noise analysis of an external gear pump is carried out by using the computational fluid dynamics (CFD) method and The Lighthill

Nov 26, 2018Open    AccessArticle

Experimental Investigation of Visualization and Package of Phase Change Material for Thermal Management of 18650 Lithium-Ion Battery

Qingyu Wu
The visualization of phase change process of phase change material (PCM) for thermal management of 18650 lithium-ion battery was studied by experimental method. The configuration consists of a semi-cylindrical battery allocated in the center of a semi-concentric housing made of aluminum, composite PCM and a transparent plate of 3 mm thick made of acrylics. The results show that the composite P

Nov 19, 2018Open    AccessArticle

EDXRF Spectroscopic Elemental Analysis for Efficacy of Kibabii University Sewage Treatment System

Yonah Situma, Jared Oloo Odhiambo, John Wanjala Makokha
Elemental analysis of sewage effluents in Kibabii sewage treatment system was achieved via Energy-Dispersive X-Ray Fluorescence (EDXRF) spectroscopy with the aim of assessing the efficacy of the treatment system. Concentrations of lead (Pb), mercury (Hg), cadmium (Cd) and arsenic (As) were measured based on clay soil “standards” in concentration range for Pb, Hg and As as 12.7 ppm, 14.3 ppm and 8.83 ppm respectively for certificat

Nov 19, 2018Open    AccessArticle

A Battery Health Data Sharing Model via Blockchain

Peng Ding
According to the status quo of the electrical vehicle market, the numbers of re-tired power battery from the NEV (new electrical vehicle) would definitely lead to a big increase. And the key factor to evaluate the SOH (state of health) of the retired battery is to get the historical data to optimize the parameters of the models. But the truth is there are many restrictions in data access and sharing between the battery manufacture

Oct 30, 2018Open    AccessArticle

Analysis of Spatial Sensitivity Based on Electrostatic Monitoring Technique in Oil-Lubricated System

Zelai Jin, Fuqiang Zhang
In this paper, for the detection of wear particles in lubricating oil roads, by an-alyzing the particle belt motor, a mathematical model of the oil circuit electro-static sensor considering the dielectric constant is proposed. At the same time, the concept of spatial sensitivity and visual field is introduced. The influencing factors of the position of the charged abrasive particles, the axial