An in-cylinder study of the particulate/NO{sub x} trade-off in a DI Diesel Engine. Draft of final report
The goal of the work performed during the contract period was to establish the ability to study soot and NO within the combustion chamber of a DI Diesel engine and to couple these measurements with actual exhaust emissions. This work was motivated by the need to obtain a more complete understanding of the particulate/NO{sub X} trade-off, observed in Diesel engines, to aid engine designers in meeting emissions limits. In order to achieve the desired goal, an optically accessible DI Diesel engine was designed and constructed. Also, planar imaging methods for imaging soot and NO were developed in laboratory flames and were then applied to the engine. For the study of soot, planar Mie scattering was used and a polarization ratio method was investigated to distinguish soot from fuel droplets. The Mie scattering technique proved to be well suited for the engine, and extensive results were obtained. In order to observe NO, planar laser induced fluorescence was used and it was successfully applied in the engine. In addition to these techniques, high speed combustion photography and shadowgraph photography were applied to obtain general characteristics of the combustion process. As a final diagnostic, actual engine emissions were measured. This report begins with a brief discussion of the problem under investigation and a summary of other studies of the NO{sub x}/particulate trade-off. Following these sections is a summary of the accomplishments and results from the present study. Finally, detailed results are presented through the six technical papers which were written during the contract period; these papers are appended to the report.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Mechanical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AS04-87AL42880
- OSTI ID:
- 10163816
- Report Number(s):
- DOE/AL/42880-T1; ON: DE94014599; TRN: 94:007272
- Resource Relation:
- Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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