Real Fuel Effects on Low Speed Pre-Ignition

2018-01-1456

04/03/2018

Features
Event
WCX World Congress Experience
Authors Abstract
Content
To better understand real fuel effects on LSPI, a matrix was developed to vary certain chemical and physical properties of gasoline. The primary focus of the study was the impact of paraffinic, olefinic, and aromatic components upon LSPI. Secondary goals of this testing were to study the impact of ethanol content and fuel volatility as defined by the T90 temperature. The LSPI rate increased with ethanol content but was insensitive to olefin content. Additionally, increased aromatic content uniformly led to increased LSPI rates. For all blends, lower T90 temperatures resulted in decreased LSPI activity. The correlation between fuel octane (as RON or MON) suggests that octane itself does not play a role; however, the sensitivity of the fuel (RON-MON) does have some correlation with LSPI. Finally, the results of this analysis show that there is no correlation between the laminar flame speed of a fuel and the LSPI rate. These findings are significant as there are known regions of the global fuel market which can have high aromatic content in gasoline and it should be expected that real-world LSPI occurrence will be more likely in these regions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2018-01-1456
Pages
14
Citation
Kocsis, M., Anderson, G., and Briggs, T., "Real Fuel Effects on Low Speed Pre-Ignition," SAE Technical Paper 2018-01-1456, 2018, https://doi.org/10.4271/2018-01-1456.
Additional Details
Publisher
Published
Apr 3, 2018
Product Code
2018-01-1456
Content Type
Technical Paper
Language
English