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Empirical Knock Model for Automatic Engine Calibration

Ganestam, Per (2010) In MSc Theses
Department of Automatic Control
Abstract
Engine knock is an undesired phenomenon in spark ignited internal combustion engines; such as a gasoline engine running the Otto cycle. Knocking originates from abnormal combustions at timings other than those decided by controlled ignition. Individual abnormal combustions of this type is also referred to as auto-ignition. Knocking is not only a limitation on engine efficiency and thus of environmental concern too but also a destructive force, increasing engine wear-down. Current research of interest aim for an automatic engine calibration system. One part of calibration would be to find the knock boundary in engine operating condition space, so that when tuning an engine, it is guaranteed to stay within the boundary. This thesis describes... (More)
Engine knock is an undesired phenomenon in spark ignited internal combustion engines; such as a gasoline engine running the Otto cycle. Knocking originates from abnormal combustions at timings other than those decided by controlled ignition. Individual abnormal combustions of this type is also referred to as auto-ignition. Knocking is not only a limitation on engine efficiency and thus of environmental concern too but also a destructive force, increasing engine wear-down. Current research of interest aim for an automatic engine calibration system. One part of calibration would be to find the knock boundary in engine operating condition space, so that when tuning an engine, it is guaranteed to stay within the boundary. This thesis describes a method to find the knock boundary by the use of an empirical knock model based on the Arrhenius equation, calculations of unburned gasoline air mixture temperatures by a temperature mean value approach and the use and improvement of a model parameter called the K-value (Less)
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author
Ganestam, Per
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5864
ISSN
0280-5316
language
English
id
8847475
date added to LUP
2016-03-16 12:37:17
date last changed
2016-03-16 12:37:17
@misc{8847475,
  abstract     = {Engine knock is an undesired phenomenon in spark ignited internal combustion engines; such as a gasoline engine running the Otto cycle. Knocking originates from abnormal combustions at timings other than those decided by controlled ignition. Individual abnormal combustions of this type is also referred to as auto-ignition. Knocking is not only a limitation on engine efficiency and thus of environmental concern too but also a destructive force, increasing engine wear-down. Current research of interest aim for an automatic engine calibration system. One part of calibration would be to find the knock boundary in engine operating condition space, so that when tuning an engine, it is guaranteed to stay within the boundary. This thesis describes a method to find the knock boundary by the use of an empirical knock model based on the Arrhenius equation, calculations of unburned gasoline air mixture temperatures by a temperature mean value approach and the use and improvement of a model parameter called the K-value},
  author       = {Ganestam, Per},
  issn         = {0280-5316},
  language     = {eng},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {Empirical Knock Model for Automatic Engine Calibration},
  year         = {2010},
}