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Efficiency and Emissions Mapping of RCCI in a Light-Duty Diesel Engine Oak Ridge National Laboratory
- Format:
- Conference/Event
- Author/Creator:
- Curran, Curran, author.
- Conference Name:
- SAE 2013 World Congress & Exhibition (2013-04-16 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2013
- Summary:
- In-cylinder blending of gasoline and diesel to achieveReactivity Controlled Compression Ignition (RCCI) has been shown toreduce NOX and particulate matter (PM) emissions whilemaintaining or improving brake thermal efficiency as compared toconventional diesel combustion (CDC). The RCCI concept has anadvantage over many advanced combustion strategies in that the fuelreactivity can be tailored to the engine speed and load allowingstable low-temperature combustion to be extended over more of thelight-duty drive cycle load range. Varying the premixed gasolinefraction changes the fuel reactivity stratification in the cylinderproviding further control of combustion phasing and pressure riserate than the use of EGR alone. This added control over thecombustion process has been shown to allow rapid engine operatingpoint exploration without direct modeling guidance.This paper explores the efficiency, emissions and combustioncharacteristics of RCCI with gasoline and ultra-low sulfur dieselfuel over a wide speed and load range in a light-dutymulti-cylinder diesel engine leading to the creation of an RCCIengine map. The RCCI map was developed under self-imposedconstraints which included a maximum cylinder pressure rise rate of10 bar/deg and a CO emission limit of 5000 ppm. The RCCI map wasdeveloped using a mix of single and split diesel injections withoutthe use of EGR for best brake thermal efficiency with lowestpossible NOX emissions. RCCI emissions and performance resultsare compared to CDC on the same base diesel engine
- Notes:
- Vendor supplied data
- Publisher Number:
- 2013-01-0289
- Access Restriction:
- Restricted for use by site license
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