Comprehensive study of key operating parameters on combustion characteristics of butanol-gasoline blends in a high speed SI engine

2018 ◽  
Vol 212 ◽  
pp. 13-32 ◽  
Author(s):  
Kaimin Liu ◽  
Yangtao Li ◽  
Jing Yang ◽  
Banglin Deng ◽  
Renhua Feng ◽  
...  
Keyword(s):  
High Speed ◽  
Combustion Characteristics ◽  
Operating Parameters ◽  
Si Engine ◽  
Comprehensive Study

scholarly journals Development of a Compact,  Configurable, Real-Time Range  Imaging System

2021 ◽  
Author(s):  
◽  
Adrian Peter Paul Jongenelen
Keyword(s):  
High Speed ◽  
Imaging System ◽  
Modulation Frequency ◽  
Image Sensor ◽  
Measurement Precision ◽  
Operating Parameters ◽  
Range Imaging ◽  
Field Range ◽  
Full Field ◽  
Precision And Accuracy

<p>This thesis documents the development of a time-of-flight (ToF) camera suitable for autonomous mobile robotics applications. By measuring the round trip time of emitted light to and from objects in the scene, the system is capable of simultaneous full-field range imaging. This is achieved by projecting amplitude modulated continuous wave (AMCW) light onto the scene, and recording the reflection using an image sensor array with a high-speed shutter amplitude modulated at the same frequency (of the order of tens of MHz). The effect is to encode the phase delay of the reflected light as a change in pixel intensity, which is then interpreted as distance. A full field range imaging system has been constructed based on the PMD Technologies PMD19k image sensor, where the high-speed shuttering mechanism is builtin to the integrated circuit. This produces a system that is considerably more compact and power efficient than previous iterations that employed an image intensifier to provide sensor modulation. The new system has comparable performance to commercially available systems in terms of distance measurement precision and accuracy, but is much more flexible with regards to its operating parameters. All of the operating parameters, including the image integration time, sensor modulation phase offset and modulation frequency can be changed in realtime either manually or automatically through software. This highly configurable system serves as an excellent platform for research into novel range imaging techniques. One promising technique is the utilisation of measurements using multiple modulation frequencies in order to maximise precision over an extended operating range. Each measurement gives an independent estimate of the distance with limited range depending on the modulation frequency. These are combined to give a measurement with extended maximum range using a novel algorithm based on the New Chinese Remainder Theorem. A theoretical model for the measurement precision and accuracy of the new algorithm is presented and verified with experimental results. All distance image processing is performed on a per-pixel basis in real-time using a Field Programmable Gate Array (FPGA). An efficient hardware implementation of the phase determination algorithm for calculating distance is investigated. The limiting resource for such an implementation is random access memory (RAM), and a detailed analysis of the trade-off between this resource and measurement precision is also presented.</p>

Theoretical investigation on combustion characteristics of ethanol-fueled dual-plug SI engine

Fuel ◽  
2019 ◽  
Vol 257 ◽  
pp. 116068 ◽  
Author(s):  
İsmail Altın ◽  
Atilla Bilgin ◽  
İsmet Sezer
Keyword(s):  
Theoretical Investigation ◽  
Combustion Characteristics ◽  
Si Engine

scholarly journals A review on advanced nanofiber technology for membrane distillation

2019 ◽  
Vol 14 ◽  
pp. 155892501882490 ◽  
Author(s):  
Fatma Yalcinkaya
Keyword(s):  
Tissue Engineering ◽  
Surface Area ◽  
Wound Dressing ◽  
High Surface ◽  
High Surface Area ◽  
Membrane Distillation ◽  
Operating Parameters ◽  
Polymeric Nanofibers ◽  
Highly Porous ◽  
Comprehensive Study

The importance of the nanofiber webs increases rapidly due to their highly porous structure, narrow pore size, and distribution; specific surface area and compatibility with inorganics. Electrospinning has been introduced as one of the most efficient technique for the fabrication of polymeric nanofibers due to its ability to fabricate nanostructures with unique properties such as a high surface area and porosity. The process and the operating parameters affect the nanofiber fabrication and the application of nanofibers in various fields, such as sensors, tissue engineering, wound dressing, protective clothes, filtration, desalination, and distillation. In this review, a comprehensive study is presented on the parameters of electrospinning system including applications. More emphasis is given to the application of nanofibers in membrane distillation (MD). The research developments and the current situation of the nanofiber webs in MD are also discussed.

Mechanics of High Speed Texturing

1988 ◽  
Vol 58 (11) ◽  
pp. 653-662 ◽  
Author(s):  
Tae Jin Kang ◽  
Wei Li ◽  
Aly El-Shiekh
Keyword(s):  
High Speed ◽  
Applied Pressure ◽  
Operating Parameters ◽  
Linear Speed

The mechanics of ring twisting are analyzed, and the effects of machine operating parameters such as the R/Y ratio (the ratio of the linear speed of ring to the speed of the yarn path), the ring crossing angle, and the externally applied pressure are discussed. The advantages of the ring twister are compared with the stacked disc spindle and the belt twister. The restraints in designing the ring aggregate are discussed in terms of the differential relative torsional slippage.

A Comprehensive Study on mmWave-Based Mobile Hotspot Network System for High-Speed Train Communications

2019 ◽  
Vol 68 (3) ◽  
pp. 2087-2101 ◽  
Author(s):  
Junhyeong Kim ◽  
Mathis Schmieder ◽  
Michael Peter ◽  
Heesang Chung ◽  
Sung-Woo Choi ◽  
...  
Keyword(s):  
High Speed ◽  
Network System ◽  
High Speed Train ◽  
Comprehensive Study

scholarly journals Analysis of high-speed broadband flame chemiluminescence imaging in a SI engine

2020 ◽  
Vol 788 ◽  
pp. 012060
Author(s):  
S Shawal ◽  
M S Meon ◽  
J B Saedon ◽  
M F Remeli ◽  
N H Mohamad Nor ◽  
...  
Keyword(s):  
High Speed ◽  
Si Engine
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