Journal article
Tailoring HCCI heat-release rates with partial fuel stratification: Comparison of two-stage and single-stage-ignition fuels
Y Yang, JE Dec, N Dronniou, M Sjöberg
Proceedings of the Combustion Institute | Published : 2011
Abstract
This work concerns one of the major issues restricting the application of homogeneous charge compression-ignition (HCCI) engines, overly rapid combustion at high-load conditions, which can lead to engine knock and potential engine damage. To overcome this problem, partial fuel stratification was used, where most fuel was premixed with intake air and the rest of the fuel was directly injected during the compression stroke. To be effective, this technique depends critically on the fuel autoignition chemistry. PRF73, a mixture of 73 vol% isooctane and 27 vol% n-heptane that exhibits two-stage ignition under these conditions, successfully enabled control of the combustion heat-release rate with ..
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Funding Acknowledgements
Primary support for this investigation was provided by Chevron under WFO contract FI083070907-Z, managed by William Cannella. The work was performed at the Combustion Research Facility, Sandia National Laboratories, Livermore, CA. Support for establishing the HCCI lab facility was provided by the US Department of Energy, Office of Vehicle Technologies, managed by Gurpreet Singh. Sandia is a multiprogram laboratory operated by the Sandia Corporation, a Lockheed Martin Company, for the US Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.