MD3-3: Distribution of Unburned Hydrocarbons for Low Temperature Light-Duty Diesel Combustion(MD: Measurement and Diagnostics,General Session Papers)
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概要
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In-cylinder imaging of unburned hydrocarbon (UHC) distributions was performed via planar laser-induced fluorescence (PLIF) in a light-duty diesel engine employing a partially-premixed compression ignition (PPCI) combustion scheme. Measurements were acquired in the bowl and clearance volume at a light load baseline condition with optimized injection timing. With the fueling rate held constant, the injection timing was both advanced and retarded to help clarify the source of high level UHC emissions. The UHC composition was further investigated by spectral analysis of the fluorescence signal. Three major UHC sources were identified: nozzle dribble from the injector tip, low-temperature mixture of incomplete reactants within the cylinder core surrounding the injector and crevice region fuel accumulation along the cylinder sidewalls. Injection timing was found to influence UHC composition and concentration in each of the identified regions.
- 一般社団法人日本機械学会の論文
- 2008-07-28
著者
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Miles Paul
Sandia National Laboratories
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Ekoto Isaac
Sandia National Laboratories
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Colban Will
Sandia National Laboratories
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Kim Duksang
Sandia National Laboratories
関連論文
- A Parametric Study of Low-Temperature, Late-Injection Combustion in a HSDI Diesel Engine(Advanced Combustion Technology in Internal Combustion Engines)
- A Parametric Study of Low-Temperature, Late-Injection Combustion in an HSDI Diesel Engine(Diesel Engines, Performance and Emissions, Thermal Efficiency)
- (3-28) Measurement and Modeling of Large-Scale Flow Structures and Turbulence in a High-Speed Direct-Injection Diesel Engine((DE-5)Diesel Engine Combustion 5-Heat Transfer and Fluid Flow)
- MD3-3: Distribution of Unburned Hydrocarbons for Low Temperature Light-Duty Diesel Combustion(MD: Measurement and Diagnostics,General Session Papers)
- MS3-2: Comparison of Measured and Simulated In-Cylinder Flow Fields in an Optical Diesel Engine(MS: Modeling and Simulation,General Session Papers)