A New Pipeline Repair System and Its Application in China

Guo, Liu; Wang, Xiuyun; Lu, Min

doi:10.1115/ipc2008-64151

Cited by 2 publications

(2 citation statements)

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“…and four on-off outputs used for positive and negative terminal signals of the special-driving circuit board and the buzzer. The data transmission between the PLC and the host computer is realized with asynchrony serial communication [7,8]. The parameters such as EVP type, detection points are set on the host computer, which reads detected EVP voltage data from slave PLC registers and stores in the system database for real-time tracking and statistical analysis of detection process.…”

Section: The Hardware Design Of the Control Systemmentioning

confidence: 99%

Development of Automatic Detection System for EGR Valve Position Sensor

Wang

Wei

Zhang

2015

AMM

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As an effective way for controlling emission of nitrogen oxide, EGR (Exhaust Gas Recirculation) has been widely used in automobiles. EVP (EGR valve position sensor) is a key component in EGR and functions as obtaining the accurate EGR valve opening position for governing the recirculation volume of exhaust gas. Its overall quality and working accuracy affect the performance of EGR directly and must be detected stringently before delivered from the factory. To solve the problems of labor intensity, low detecting efficiency, big deviation results with traditional EVP manual detection equipment in an automotive electronics company, an automatic detection system for EVP is developed based on PLC and industrial microcomputer. The working principle and structure of the system and design of EVP detection fixture are present, and hardware and software of its control system are developed in the paper. Three function modules, that are manual operation, automatic operation and data statistical analysis, are described in more detail. The practical application shows that the automatic detection system for EVP can achieve detection process flexibility, increase detection efficiency and accuracy greatly and solve the problems with traditional method effectively.

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Section: The Hardware Design Of the Control Systemmentioning

confidence: 99%

Development of Automatic Detection System for EGR Valve Position Sensor

Wang

Wei

Zhang

2015

AMM

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“…CFRC material can be regarded as transversely isotropic material. Thus using classical lamination theory, the stiffness matrix of the CFRC material with symmetric winding angle [ ] φ ± and homogenous thickness can be written as [4] [ ] [ ]…”

Section: The Equivalent Modulus Of Cfrc Materialsmentioning

confidence: 99%

Numerical Simulation on Cracked Plate Repaired with Carbon-Fiber Wrapped Composite Material

Wang

Chang

2012

AMR

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The behavior of a center-cracked aluminum plate repaired with carbon-fiber wrapped composite material under axial loading is investigated. The carbon-fiber wrapped composite material is simulated as transversely isotropic material by means of an equivalent modulus method. The repair patch is applied on one side of the cracked plate. The stress intensity factors along the crack front and the stress distribution at the repair domain are examined. The numerical simulation results indicate that the carbon-fiber wrapped composite material performs very well in the repair to cracked plate and an appropriate thickness of the repair patch needs to be selected.

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A New Pipeline Repair System and Its Application in China

Cited by 2 publications

References 0 publications

Development of Automatic Detection System for EGR Valve Position Sensor

Development of Automatic Detection System for EGR Valve Position Sensor

Numerical Simulation on Cracked Plate Repaired with Carbon-Fiber Wrapped Composite Material

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