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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Real-time measurement of oxides of nitrogen from heavy-duty diesel engines

Aravelli, Aparna. January 2003 (has links)
Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains x, 115 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 101-102).
62

Combustion stress in compression-ignition engines.

Taylor, Andrew Bruce. January 1989 (has links)
South Africa produces alternative fuels from a number of different sources. The properties of a fuel are known to affect the nature of combustion in compression-ignition engines significantly, and have occasionally resulted in engine failures. Combustion analyses have been conducted on a wide range of fuels and combustion has been thoroughly quantified. However, the role played by the different combustion variables in failures was not known. The result was that it was not possible to predict the implications of variations in the nature of combustion. There was thus a need to investigate the relative role of combustion variables in the failure of engines. The mechanisms of combustion and engine failure were studied. All the variables required to determine combustion and engine durability were measured simultaneously. This research required the development of a complete engine research facility as well as specialized transducers. Fast response surface thermocouples were designed and constructed in order to monitor transient surface temperatures. Heat transfer rates were then calculated with the aid of Fourier analysis. Dynamic stresses were monitored by strain-gauges applied to the engine. A special high speed data acquisition system was developed. An existing heat release model was modified and used to calculate combustion rates. A comprehensive finite element model was developed to calculate piston temperatures and stresses. The role of each combustion variable in stress and durability was investigated by statistical analysis. The results successfully identified the causes of combustion related engine failures. The primary cause of engine failure was found to be thermal loading. The principal cause of any variation in thermal loading and thus engine durability was maximum cylinder pressure. The life of the engine was proved to be determined almost entirely by peak cylinder pressure. The role of the rate of pressure rise was proved to be insignificant. All the implications of variations in the nature of combustion can now be determined accurately. It will thus be possible to optimise engine modifications and fuel properties before validation by durability testing. / Thesis (Ph.D.)-University of Natal, Pietermaritzburg, 1989.
63

Experimental methodology for measurement of diesel exhaust particulates

Nandivada, Rakesh. January 2007 (has links)
Thesis (M.S.)--West Virginia University, 2007. / Title from document title page. Document formatted into pages; contains ix, 69 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 59-64).
64

Characterization of vehicular exhaust emissions and indoor air quality of public transport buses operating on alternative diesel fuels /

Vijayan, Abhilash. January 2007 (has links)
Dissertation (Ph.D.)--University of Toledo, 2007. / Typescript. "Submitted as partial fulfillment of the requirements for the Doctor of Philosophy in Engineering." Bibliography: leaves 140-146.
65

Dual fuel conversion of a direct injection diesel engine

Park, Talus. January 1999 (has links)
Thesis (M.S.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains x, 96 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 61-62).
66

Mean value modeling and control of a diesel engine using neural networks

Yacoub, Yasser M. January 1999 (has links)
Thesis (Ph. D.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains xv, 174 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 168-172).
67

Methods for reconstruction of transient emissions from heavy-duty vehicles

Madireddy, Madhava Rao. January 2008 (has links)
Thesis (Ph. D.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains xii, 117 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 104-117).
68

Measurement of total hydrocarbon emissions with MEMS using a portable FID and a novel exhaust flow meter

Knight, Jared Gregory. January 2002 (has links)
Thesis (M.S.)--West Virginia University, 2002. / Title from document title page. Document formatted into pages; contains xiii, 155 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 121-123).
69

Characterization of exhaust emissions from palm oil-based and soybean oil-based biodiesel fueled heavy-duty transit buses

Efaw, Trampas Jay. January 2009 (has links)
Thesis (M.S.)--West Virginia University, 2009. / Title from document title page. Document formatted into pages; contains ix, 85, [27] p. : ill. (some col.), col. map. Includes abstract. Includes bibliographical references (p. 84-85).
70

A performance evaluation of the MEMS an on-road emissions measurement system study /

Shade, Benjamin C. January 2000 (has links)
Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains xii, 118 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 102-104).

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