OALib 期刊
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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

Aug 30, 2018Open    AccessArticle

Lightweight Study of Carbon Fiber Composite B-Pillar Based on Equal Stiffness Principle

Dongming Sun, Chao Tao
The replacement of carbon fiber reinforced epoxy resin matrix composite (CFRP) in the B-pillar of the body structure was discussed. Under the condition of ensuring crashworthiness, the lightweight application of B-pillar on the structural parts of the automobile was realized. Taking the steel B-pillar of a certain model as the prototype, CFRP is used for the same stiffness design, and the stiffness, crashworthine

Jun 14, 2018Open    AccessArticle

Reliability Analysis of Automatic Transmission Based on T-S Fuzzy Fault Tree

Chaokai Lei, Haitao Ji, Ning Hu
In order to solve the lack of automatic transmission slippage fault data, the uncertainty of the link between the source of the fault and the degree of failure, the lack of applicability of the traditional Boolean logic gate, the T-S model and fuzzy theory and the revision of the confidence index are proposed. The expert survey method was combined and the analysis method was introduced into the fault tree. The T-S model is introdu

May 30, 2018Open    AccessArticle

Simulation Design of Variable Frequency Speed Regulating System for Automobile Remanufactured Generator Test Bench Based on Matlab

Huilong Lv, Yiping Luo
There are many types of vehicle generators and their parameters are different. Therefore, the motor selected for the remanufacturing test bench should be suitable for most generators. Therefore, there is a certain requirement for the adjustment range of the motor speed. The AC-DC-AC frequency converter has a large frequency adjustment range, which can meet the motor speed control requirements. In this paper, the S

Apr 29, 2018Open    AccessArticle

The Design of the Automobile Brake Cooling System

Gaohui Li
Because the car must be in the process of braking, including deceleration and parking and including downhill to maintain the speed of stability, in addition to the above driving brake should also include parking brake which is to maintain the stop of the vehicle that continues to maintain static, according to the law of Conservation of Energy. The kinetic energy of the brake drum of the rotating part of the friction p