Characterization of particle and vapor-phase organic fraction emissions from a heavy-duty diesel engine equipped with a particle trap and regeneration controls. Research report, July 1987-April 1991

Technical Report · Thu Jul 01 04:00:00 EDT 1993

OSTI ID:5789120

Bagley, S T; Gratz, L D; Leddy, D G; Johnson, J H

The effect of a particle trap on the emissions from a heavy-duty diesel engine was examined. The total particles (TPM), the particle-associated soluble organic fraction (SOF), the semivolatile organic fraction (XOC), and the sulfate-containing solid fraction (SOL) from the exhaust were collected during: (1) operation under 25% and 75% load, and (2) during trap regeneration. Particle sizes were determined and bacterial mutagenicity and 12 biologically active polynuclear aromatic hydrocarbons (PAH) and their nitrated derivatives (nitro-PAH) were measured in the SOF and XOC. The trap reduced the TPM, SOF, and SOL by approximately 90%. Although total particle volume was decreased, trap use increased the number of smaller particles. Mutagenicity in the TPM and SOF also was diminished by about 90%, reflecting a decrease in the PAH and nitro-PAH. NOx, was not changed at any load, but hydrocarbon, XOC, and sulfate were reduced by 45-80% only at 75% load. PAH and nitro-PAH in the XOC were generally not affected by trap use. However, the trap reduced XOC-associated mutagenicity to undetectable levels. There was difficulty in measuring emissions from trap regeneration tests because it was difficult to determine when the regeneration was completed. The short regeneration period produced higher concentrations of TPM and SOF, but these were small relative to average emission concentrations over the entire trap loading and regeneration period.

• Research Organization: Michigan Technological Univ., Houghton, MI (United States). Dept. of Biological Sciences
• OSTI ID: 5789120
• Report Number(s): PB-93-232841/XAB
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
AIR POLLUTION MONITORING
AROMATICS
CHALCOGENIDES
CONTROL
DATA
DIESEL ENGINES
ENGINES
EXHAUST GASES
EXHAUST SYSTEMS
FILTRATION
FLUIDS
GASEOUS WASTES
GASES
HAZARDS
HEALTH HAZARDS
HEAT ENGINES
HYDROCARBONS
INFORMATION
INTERNAL COMBUSTION ENGINES
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PARTICLES
PARTICULATES
POLLUTION CONTROL
POLYCYCLIC AROMATIC HYDROCARBONS
SAFETY STANDARDS
SAMPLING
SEPARATION PROCESSES
SIZE
STANDARDS
STATISTICAL DATA
STRUCTURAL CHEMICAL ANALYSIS
SULFATES
SULFUR COMPOUNDS
WASTES