Wright, Edmund Harvey (1961). Analysis of unsteady gas flow in a plain pipe exhaust system of a firing engine and its side effect upon the performance of a naturally aspirated two-stroke oil engine. University of Birmingham. Ph.D.
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Wright_1961_PhD.pdf
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Abstract
The present investigation is part of a long term research programme dealing with the wave action in the exhaust and induction pipes of a two-stroke oil engine and their effect upon the cylinder scavenge process.
As a development of fundamental researches carried out at the University Laboratories using simulated cylinder release pressures in a motored engine, the present investigation seeks to extend the established data to the practical problem of the engine under firing conditions.
In this report, the theoretical analysis of unsteady one-dimensional gas flow, all owing for the effects of wall friction, heat exchange with the surroundings, and temperature discontinuities is developed, and the Method of Characteristics is applied to effect a solution. Theoretical exhaust pipe and cylinder indicator diagrams are evaluated using this theory, and compared with the experimental diagrams from the firing engine.
From performance trials, the measured air consumption using a constant air/fuel ratio, but different exhaust pipe lengths and engine speeds, is evaluated and plotted on a dimensionless basis for comparison with the previous simulated work.
| Type of Work: | Thesis (Doctorates > Ph.D.) |
|---|---|
| Award Type: | Doctorates > Ph.D. |
| Licence: | |
| College/Faculty: | Faculties (to 1997) > Faculty of Engineering |
| School or Department: | School of Engineering, Department of Mechanical Engineering |
| Funders: | None/not applicable |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| URI: | http://etheses.bham.ac.uk/id/eprint/7993 |
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