A study of knock and adiabatic process in multi-fuel engines
2000 (English)Conference paper, Meeting abstract (Other academic)
For both engine designers and control purposes, a better understanding of the knocking that occurs during combustion in engines can lead to optimal decisions which will make engines operate more efficiently. The rapid rise in diesel engines is recognized as an audible impulse noise, which is known as ``knock.'' The knock is caused by the spontaneous combustion of a significant volume of fuel/air mixture. The knock produces shock waves within the combustion chamber and results in a great number of combustion chamber resonance frequencies. The engine used in the experiments was a six-cylinder modified diesel engine running in ethanol conditions. The main purpose of this research is to determine the knock phenomena and the adiabatic process. To perform the data analysis a time-frequency spectral approach was used. The results revealed both radial and circumferential resonances. The most important adiabatic coefficients were carried out and used to calculate the heat release rate.
Place, publisher, year, edition, pages
2000. Vol. 108, 2594-2595 p.
Research subject Engineering Acoustics
IdentifiersURN: urn:nbn:se:ltu:diva-38742Local ID: d39b9dd0-4543-11de-a42f-000ea68e967bOAI: oai:DiVA.org:ltu-38742DiVA: diva2:1012243
Joint 140th Meeting ASA/NOISE-CON 2000 : 03/12/2000 - 08/12/2000
Godkänd; 2000; 20090520 (andbra)2016-10-032016-10-03Bibliographically approved