Turbocharger Matching for a 4-Cylinder Gasoline HCCI Engine Using a 1D Engine Simulation

Paper #:
  • 2010-01-2143

Published:
  • 2010-10-25
Citation:
Shingne, P., Assanis, D., Babajimopoulos, A., Keller, P. et al., "Turbocharger Matching for a 4-Cylinder Gasoline HCCI Engine Using a 1D Engine Simulation," SAE Technical Paper 2010-01-2143, 2010, https://doi.org/10.4271/2010-01-2143.
Pages:
14
Abstract:
Naturally aspirated HCCI operation is typically limited to medium load operation (∼ 5 bar net IMEP) by excessive pressure rise rate. Boosting can provide the means to extend the HCCI range to higher loads. Recently, it has been shown that HCCI can achieve loads of up to 16.3 bar of gross IMEP by boosting the intake pressure to more than 3 bar, using externally driven compressors. However, investigating HCCI performance over the entire speed-load range with real turbocharger systems still remains an open topic for research.A 1 - D simulation of a 4 - cylinder 2.0 liter engine model operated in HCCI mode was used to match it with off-the-shelf turbocharger systems. The engine and turbocharger system was simulated to identify maximum load limits over a range of engine speeds. Low exhaust enthalpy due to the low temperatures that are characteristic of HCCI combustion caused increased back-pressure and high pumping losses and demanded the use of a small and more efficient turbocharger. The paper shows that the load range of naturally aspirated HCCI can be noticeably extended to ∼12 bar net IMEP, while achieving net indicated efficiencies of ∼37 % at 2500 rpm, where the turbocharger was best matched. The study shows that there is significant potential to achieve load extension with existing turbochargers; however the load increase strongly depends on the turbocharger selection and matching.
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

Technical Paper / Journal Article
2011-05-17
Training / Education
2018-05-07
Training / Education
2009-12-15
Technical Paper / Journal Article
2011-04-12
Event
2018-04-10
Article
2017-07-26