Analysis and in-cylinder measurement of particulate radiant emissions and temperature in a direct-injection diesel engine
In-cylinder flame temperature and particulate concentration were measured in a Cummins single-cylinder NH diesel engine by means of an optical radiation probe using the two-color theory. The radiation probe consists of a specially designed trifurcated fiber optical bundle and a sapphire rod window. A self-cleaning window was designed, which stays clean under steady state full load conditions. The engine was operated at various conditions for both standard cooled and simulated mini-cooled configurations. The heat release rate data and exhaust emissions, NO, NOx and CO are presented along with the radiant emission data. Increasing the coolant temperature gave slightly more exhaust soot production as well as in-cylinder soot production, because more late burning occurred at the higher coolant temperature. It is believed that increased late burning was caused by the delayed end of injection and lower injection rate, perhaps due to thermal-expansion effects in the injector. Experimental data were used to evaluate the potential radiation heat transfer.
- Research Organization:
- Wisconsin Univ., Madison, WI (USA). Engine Research Center
- OSTI ID:
- 6003073
- Report Number(s):
- AD-A-204522/7/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330102* -- Internal Combustion Engines-- Diesel
330705 -- Emission Control-- Particulates
CLEANING
COLOR
COOLANTS
DATA
DIESEL ENGINES
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
EXPANSION
EXPERIMENTAL DATA
FIBER OPTICS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT
HEAT ENGINES
INFORMATION
INTERNAL COMBUSTION ENGINES
NUMERICAL DATA
OPENINGS
OPTICAL EQUIPMENT
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PARTICLES
PARTICULATES
PHYSICAL PROPERTIES
PROBES
PRODUCTION
RADIATIONS
RODS
SOOT
TEMPERATURE MEASUREMENT
THERMAL EXPANSION
THERMAL RADIATION
WINDOWS