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Appendix M: HCCI Projects
Pages 396-400

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From page 396...
... The Advanced Combustion Controls - Enabling Systems and Solutions (ACCESS) project, partially funded by a DOE grant, is focused on coordinating multi-mode combustion events over the engine drive cycle operating conditions.
From page 397...
... NOx emissions over portions of the FTP-75 cycle for several combustion modes and control cases. Case 1 is for the base TABLE M.1  Simulated Fuel Economy Benefits for an Experimental Vehicle with a 2.0L Four-Cylinder Engine with MultiMode Combustion including SI, HCCI, and SACI Without Fuel Economy Penalties for NO x Control FTP-75 HWFET Combustion Mode Mode Switches mpg % lncrease mpg % Increase SI None 22.8 Baseline 36.1 Baseline SI/SACI w/o Penaltiesa 23.5 3.2 38.0 3.5 SI/HCCI w/o Penaltiesa 23.8 4.3 36.9 2.2 SI/SACI/HCCI w/o Penaltiesa 24.1 5.9 38.3 6.1 Combustion Modes SI: stoichiometric AFR, internal EGR, direct injection, TWC.
From page 398...
... IMEP. ORNL and Delphi caution that and low NOx emissions in a production engine despite the indicated thermal efficiency on a multi-cylinder engine the first published research papers appearing over 3 may be lower due to increased pumping work when using an decades ago." actual turbocharge instead of air provided by the test facility.
From page 399...
... Delphi and Hyundai demonstrated a 13.1 percent improve The University of Wisconsin and General Motors have in- ment in fuel economy due to parasitic loss reduction (crankvestigated the use of 87 AKI regular grade gasoline in a high shaft and camshaft rollerization, optimized oil pump, cooled speed, direct injection, light-duty compression ignition en- EGR for reduced pumping losses, engine downspeeding, and gine to extend the low temperature combustion (LTC) regime exhaust heat recovery)
From page 400...
... 2013 DOE Annual Merit Review, tions. SAE Technical Paper 1999-01-3682.


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