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Thesis-1972-Derham.pdf (12.22 MB)

Air motion in a four-stroke direct-injection diesel engine

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thesis
posted on 2018-11-22, 12:01 authored by John A. Derham
The investigation presented attempts to develop a suitable mathematical model which may be relied upon to predict the air motion within the cylinder of a motored, four-stroke direct-injection diesel engine. Using a method of hot wire anemometry, a three-wire anemometer was developed for measuring the magnitude and direction of the three-dimensional velocity vector within a variable density flow similar to that encountered inside a motored engine cylinder and an exhaustive experimental program undertaken to justify the technique. The results of the experimental program showed that the magnitude of, the. Three-dimensional velocity vector may be measured within an accuracy of ± 9% whilst the direction may be determined within ± 12%. Applying the method to an engine cylinder, measurements of the air motion were recorded over a range of engine speeds (500–1500 rpm) and the effect of a masked inlet valve and supercharging the engine at 10 psig were also investigated. [Continues.]

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Publisher

© John Alan Derham

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

1972

Notes

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of the degree of Doctor of Philosophy at Loughborough University.

Language

  • en

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    Mechanical, Electrical and Manufacturing Engineering Theses

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