On the Maximum Pressure Rise Rate in Boosted HCCI Operation

2009-01-2727

11/02/2009

Event
SAE 2009 Powertrains Fuels and Lubricants Meeting
Authors Abstract
Content
This paper explores the combined effects of boosting, intake air temperature, trapped residual gas fraction, and dilution on the Maximum Pressure Rise Rate (MPRR) in a boosted single cylinder gasoline HCCI engine with combustion controlled by negative valve overlap. Dilutions by both air and by cooled EGR were used. Because of the sensitivity of MPRR to boost, the MPRR constrained maximum load (as measured by the NIMEP) did not necessarily increase with boosting. At the same intake temperature and trapped residual gas fraction, dilution by recirculated burn gas was effective in reducing the MPRR, but dilution by air increased the value of MPRR. The dependence of MPRR on the operating condition was interpreted successfully by a simple thermodynamic analysis that related the MPRR value to the volumetric heat release rate.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-2727
Pages
10
Citation
Wildman, C., Scaringe, R., and Cheng, W., "On the Maximum Pressure Rise Rate in Boosted HCCI Operation," SAE Technical Paper 2009-01-2727, 2009, https://doi.org/10.4271/2009-01-2727.
Additional Details
Publisher
Published
Nov 2, 2009
Product Code
2009-01-2727
Content Type
Technical Paper
Language
English