On the phase and structural variability of directly injected propane at spark ignition engine conditions

Poursadegh, F, Lacey, J, Brear, M, Gordon, R, Petersen, P, Lakey, C, Butcher, B, Ryan, S and Kramer, U 2018, 'On the phase and structural variability of directly injected propane at spark ignition engine conditions', Fuel, vol. 222, pp. 294-306.


Document type: Journal Article
Collection: Journal Articles

Title On the phase and structural variability of directly injected propane at spark ignition engine conditions
Author(s) Poursadegh, F
Lacey, J
Brear, M
Gordon, R
Petersen, P
Lakey, C
Butcher, B
Ryan, S
Kramer, U
Year 2018
Journal name Fuel
Volume number 222
Start page 294
End page 306
Total pages 13
Publisher Elsevier Ltd
Abstract This paper presents an experimental and theoretical examination of directly injected (DI) propane at a wide range of conditions relevant to spark ignition engines. The investigated conditions comprise the injection of sub- and supercritical propane, with the latter representing a plausible, operational extreme during engine heat soak. Optical imaging is first used to study a wide range of observed spray behaviors, highlighting the sensitivity of DI propane to the engine operating condition. These varying behaviors then prompt further consideration of the thermodynamics involved. This extends thermodynamic arguments recently proposed by the authors in another work, and is able to explain when supercritical injection contains the liquid phase, when shock structures appear and when the spray collapses. Spray regime diagrams are then proposed in order to generalize the observed behaviors. These diagrams reveal several, often overlapping regimes that demarcate choked and unchoked injection, collapsed and multi-plume sprays, and the appearance or disappearance of the liquid phase immediately outside of the injector.
Subject Energy Generation, Conversion and Storage Engineering
Keyword(s) Direct-injection
LPG
Phase transition
Plume-to-plume interaction
Spark-ignition engine
DOI - identifier 10.1016/j.fuel.2018.02.137
Copyright notice © 2018 Elsevier Ltd All rights reserved.
ISSN 0016-2361
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Altmetric details:
Access Statistics: 9 Abstract Views  -  Detailed Statistics
Created: Tue, 26 Mar 2019, 09:36:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us