A multi-zone model of the CFR engine : investigating cascading autoignition and octane rating

Master Thesis

2011

Permanent link to this Item
http://hdl.handle.net/11427/11357
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thesis_ebe_2011_perumal_m.pdf (4.11 MB)
Authors
Perumal, Marlan
Supervisors
Floweday, Gareth
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University of Cape Town

Department
Department of Mechanical Engineering
Faculty
Faculty of Engineering and the Built Environment
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Abstract
The CFR engine is the standardised research engine used for the measurement of knock resistance of fuels through the Research Octane Number (RON) and Motor Octane Number(MON) tests. In standard production engines, knock manifests as an almost instantaneous pressure rise followed by knock ringing" pressure oscillations of similar magnitude. However, knock in the CFR engine is characterised, and measured by, a steep, but more gradual pressure rise, followed by ringing of much lesser magnitude. It has been previously proposed that a cascading autoignition", resulting from an in-cylinder temperature gradient, is responsible for this unique pressure development.
Description

Includes abstract.


Includes bibliographical references (p. 103-109).

Keywords
Mechanical Engineering

Reference:

Perumal, M. 2011. A multi-zone model of the CFR engine : investigating cascading autoignition and octane rating. University of Cape Town.

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Masters