DIESEL EMISSIONS MEASUREMENTS AND CONTROL
This paper is intended to focus upon one aspect of diesel engine use--control of its exhaust product. To place the problems of diesel emission control in proper context, it would be well to attempt a correction of two widely held misconceptions about the characteristics of the diesel engine. The first of the two misconceptions is that the diesel, by its inherent nature, produces a dirty exhaust--dirty in the sense of being heavily loaded with objectionable pollutants, the fact is that diesel exhaust is not inherently "dirty". In fact, in comparison with spark ignition engines typical of production only a few years ago, the diesel produces exhaust that is relatively "clean". A well-designed, well-adjusted, well-maintained diesel engine need not smoke excessively, need not produce malodorous exhaust, and typically will produce carbon monoxide only at very low concentrations compared with unmodified exhaust of the spark ignition engine. The second of the misconceptions is that the diesel engine does not--even by some representations cannot--produce, toxic exhaust. The fact is that a diesel engine typically does produce toxic gases, and it is indeed a very dangerous misconception to hold that the diesel generates no toxic material. The point of emphasis is the need to understand that diesel engines do in fact produce toxic combustion products but that the diesel family is not inherently "dirty" and that the toxic products are controllable at acceptable levels.
Bureau of MinesMining and Safety Research Center, 4800 Forbes Avenue
Pittsburgh, PA USA 15213
- HURN, R W
- Publication Date: 1975
- Pagination: p. 47-58
- TRT Terms: Air pollution; Air pollution sources; Diesel engine exhaust gases; Diesel engines; Exhaust gases; Poisons; Pollution control; Smoking; Vehicle maintenance
- Old TRIS Terms: Diesel engine maintenance
- Subject Areas: Environment; Maintenance and Preservation; Railroads;
- Accession Number: 00127616
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: No. 8666 Inf. Circ.
- Files: TRIS
- Created Date: Dec 16 1975 12:00AM