Download or read book Fuel Influence on Gasoline Direct Injection Particulate Matter Emissions written by Khaled Rais and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particulate emissions from gasoline direct injected engines are a topic of growing research interest due to health concerns. Using engine tests of extended length and fueled with custom hydrocarbon blends, this study aimed to experimentally investigate temporal and test-to-test gasoline particulate emissions variability that has been observed in earlier work. Gasoline property changes during engine operation and engine control module adjustments were ruled out as the source of the temporal variation. Crankcase ventilation system deposits were also ruled out but they were found to increase average particle numbers. Testing of custom fuel blends demonstrated that transient cold and hot start particulate emissions are fuel independent, steady state emissions are highly influenced by fuel properties and the commonly used model to assess that influence, the PM Index, is incomplete, and that the use of fuel of consistent composition reduces test-to-test variability.