THE INFLUENCE OF A CERAMIC PARTICLE TRAP ON THE SIZE DISTRIBUTION OF DIESEL PARTICLES

The U.S. Bureau of Mines has sponsored research to determine the particle size distribution and concentration of submicron particles upstream and downstream of a ceramic particle trap mounted in the exhaust stream of a Caterpillar 3304 diesel engine. Particle size distribution and mass were measured with an electrical aerosol analyzer, a diffusion battery-condensation nuclei was operated at 1400 and 1800 RPM and 3 load conditions at each speed. In general, the collection efficiency of the trap was high, ranging between 89 to 96number.

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