In-cylinder Particulate Size Distribution Measurements in a Direct-injection Diesel Engine PDF Download
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Author: Lang Luo
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
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Author: Lang Luo
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
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Book Description
Author: John A. Breslin
Publisher:
ISBN:
Category : Diesel motor exhaust gas
Languages : en
Pages : 20
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Author: Moh'-dhair Abukdais
Publisher:
ISBN:
Category :
Languages : en
Pages : 338
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Author: Markus Bertsch
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832544038
Category : Technology & Engineering
Languages : en
Pages : 170
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Book Description
This thesis discusses experimental investigations to reduce particle number emissions from gasoline engines with direct injection. Measures on a single cylinder research engine with combined usage of a particle number measurement system, a particle size distribution measurement system as well as optical diagnostics and thermodynamic analysis enable an in-depth assessment of particle formation and oxidation. Therefore, numerous optical diagnostic techniques for spray visualisation (Mie-scattering, High-Speed PIV) and soot detection (High-Speed-Imaging, Fiber optical diagnostics) are deployed. Two injectors with different hydraulic flows but identical spray-targeting are characterised and compared by measurements in a pressurised chamber. The operation at higher engine load and low engine speed is in the focus of the experimental work at the engine test bench. Thereby, the low flow velocities in the combustion chamber, caused by the low engine speed, as well as the large amount of fuel injected are major challenges for the mixture formation process. A substantial part of the thesis thus focusses on the detailed analysis of the mixture formation process, which is consisting of fuel injection, interaction of the in-cylinder charge motion with the fuel injected and the fuel properties. Measures for the optimisation of the mixture formation process and the minimisation of the particle number emissions are analysed and evaluated. The charge motion is manipulated by the impression of a directed flow, the variation of the valve timings and valve open curve. The injection process is influenced by a reduction of the hydraulic flow of the injector and an increase of the injection pressure up to 50 MPa. The investigations show fundamental effects and potentials of different variation parameters concerning their emissions reduction potential at the exemplary operation at high engine load. Due to the simultaneous analysis of the in-cylinder charge motion and a thermodynamic analysis, the results can be transferred to different engines.
Author: Adam Neer
Publisher:
ISBN:
Category : Diesel motor exhaust gas
Languages : en
Pages : 118
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Book Description
"The size, morphology and volume fraction of sub-micron particulate matter emitted from a compression ignition (diesel) engine was investigated using thermophoretic sampling experiments followed by direct visual characterizations under transmission electron microscopy"--Abstract, leaf iii.
Author: John A. Breslin
Publisher:
ISBN:
Category : Diesel motor exhaust gas
Languages : en
Pages : 20
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Author: Dale Reif Tree
Publisher:
ISBN:
Category :
Languages : en
Pages : 452
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Author: Michal Krzyzanowski
Publisher: WHO Regional Office Europe
ISBN: 9289013737
Category : Business & Economics
Languages : en
Pages : 205
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Book Description
Diseases related to the air pollution caused by road transport affect tens of thousands of people in the WHO Europe region each year. This publication considers the policy challenges involved in the need to reduce the related risks to public health and the environment, whilst meeting socio-economic requirements for effective transport systems. It sets out a systematic review of the literature and a comprehensive evaluation of the health hazards of transport-related air pollution, including factors determining emissions, the contribution of traffic to pollution levels, human exposure and the results of epidemiological and toxicological studies to identify and measure the health effects, and suggestions for policy actions and further research.
Author: Avinash Kumar Agarwal
Publisher: Springer
ISBN: 9811332991
Category : Technology & Engineering
Languages : en
Pages : 269
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Book Description
This book provides a comparative analysis of both diesel and gasoline engine particulates, and also of the emissions resulting from the use of alternative fuels. Written by respected experts, it offers comprehensive insights into motor vehicle particulates, their formation, composition, location, measurement, characterisation and toxicology. It also addresses exhaust-gas treatment and legal, measurement-related and technological advancements concerning emissions. The book will serve as a valuable resource for academic researchers and professional automotive engineers alike.
Author: Jared Cromas
Publisher:
ISBN:
Category :
Languages : en
Pages : 356
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Book Description
