Study of In-Cylinder Reactions of High Power-Density Direct Injection Diesel Engines
Final rept. 1 Oct 2001-30 Sep 2004
RUTGERS - THE STATE UNIV NEW BRUNSWICKNJ DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
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Direct-injection DI Diesel or compression-ignition CI engine combustion process is investigated when new design and operational strategies are employed in order to achieve a high power-density HPD engine. This goal is being achieved by developing quantitative imaging and speciation methods of in-cylinder reaction processes. Main achievements made during the course of the present study included Constructiondevelopment and implementation of 1 a digital imaging system consisting of five 5 units of high-speed cryogenically cooled infrared focal plane arrays operated by a single electronic-control-package, 2 a four-color-artificial intelligence method FCAIM 3 an optical DI-CI engine, 4 Rutgers Animation Program RAP 5 new electronic packages for imaging system 6 vector weighted flame analysis for evaluating stability of in-cylinder reactions 7 a new spectrometer and 8 a new HITRAN data base gas radiation model replacing our earlier model based on NASA IR handbook. A typical set of final results in the study is quantitative images distributions of water vapor, soot, gas temperature and cylinder wall temperature at successive instants of time during the reaction period, which are obtained from the consecutive cycles. They are also further analyzed stability of flame propagations e.g., repeatability by using the vector weighted special- and intensity-weighted analysis to access the high-power density engine operations.
- Combustion and Ignition
- Reciprocating and Rotating Engines