Investigating Combustion in a Mini Internal Combustion Engine

Paper #:
  • 2015-01-9002

Published:
  • 2015-09-01
DOI:
  • 10.4271/2015-01-9002
Citation:
Sarangi, A., Mehta, P., and Ramesh, A., "Investigating Combustion in a Mini Internal Combustion Engine," SAE Int. J. Aerosp. 8(1):137-149, 2015, https://doi.org/10.4271/2015-01-9002.
Pages:
13
Abstract:
Owing to a high power-to-weight ratio, mini internal combustion engine is used in propelling an unmanned air vehicle. In comparison to the performance characteristics, the investigations on the combustion aspects of mini engines are scanty. This investigation concerns study of the combustion process of a mini engine and its variability. For this purpose, the experimental cylinder pressure histories were obtained on a laboratory set-up of a 7.45 cm3 capacity mini engine. The analyses of experimental data at different throttle settings reveal that there existed a varied range of rich and lean misfiring limits around a reference equivalence ratio that corresponds to the respective maximum indicated mean effective pressure. At the limiting equivalence ratios, cylinder pressure measurements showed a high degree of cycle-to-cycle variations. In some cases, a slow combustion or misfiring event preceded a rapid combustion. From the energy release analysis, it is observed that the combustion rate was very rapid in the initial phase which subsequently slowed down. Also, there are two peaks of energy release observed under rich mixture conditions.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Standard
2010-11-16
Technical Paper / Journal Article
2014-09-30
Technical Paper / Journal Article
2013-10-07
Technical Paper / Journal Article
2017-01-10