Thermal and Chemical Effects of NVO Fuel Injection on HCCI Combustion

Paper #:
  • 2010-01-0164

Published:
  • 2010-04-12
Citation:
Fitzgerald, R. and Steeper, R., "Thermal and Chemical Effects of NVO Fuel Injection on HCCI Combustion," SAE Int. J. Engines 3(1):46-64, 2010, https://doi.org/10.4271/2010-01-0164.
Pages:
19
Abstract:
Fuel injection during negative valve overlap (NVO) can extend low-load gasoline HCCI operation through control of main combustion phasing. Reactions and heat release accompanying NVO fuel injection give rise to changes in temperature and composition of the charge prior to main combustion. The extent of reaction of injected NVO fuel and the relative importance of resulting thermal and chemical effects on main combustion are a current research topic.In this work, bulk temperature computations are used to quantify thermal conditions prior to main ignition for cases with and without NVO fueling. To separate measured thermal effects from chemical effects of NVO fuel reactions on the main combustion, cases without NVO fuel but with similar mixture temperatures and combustion phasing are compared. Effects of varying NVO fuel amount and injection timing on heat release, combustion phasing, bulk temperature evolution, and iso-octane ignition temperatures are analyzed. Chemical kinetic simulations using detailed and reduced mechanisms corroborate some general experimental trends, giving insight into the species and reactions causing observed effects.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$28.00
Mail
$28.00
Members save up to 42% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2011-04-12
Technical Paper / Journal Article
2011-05-17
Article
2017-07-26
Training / Education
2018-06-04
Training / Education
1999-09-27
Book
2012-07-01
Training / Education
2018-03-26