Record Display for the EPA National Library Catalog
RECORD NUMBER: 31 OF 40
|OLS Field Name||OLS Field Data|
|Main Title||Environmental assessment of NOx control on a spark-ignited large-bore reciprocating internal combustion engine /|
|CORP Author||Acurex Corp., Mountain View, CA. Energy and Environmental Div.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.|
|Publisher||U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,|
|Report Number||EPA-600/7-86-002a; EPA-600/7-86-002b; ACUREX/TR-81-79/EE; EPA-68-02-3188|
|Subjects||Internal combustion engines--Environmental aspects. ; Sulfur dioxide--Measurement.|
|Additional Subjects||Air pollution control ; Exhaust emissions ; Diesel engines ; Nitrogen oxides ; Spark ignition engines ; Internal combustion engines ; Tables(Data) ; Concentration(Composition) ; Field tests ; Assessments ; Air fuel ratio ; Exhaust gases ; Carbon monoxide ; Trace elements ; Bioassays ; Organic compounds ; Performance evaluation ; Combustion modification ; Baseline measurements|
|Collation||2 v. : ill., charts , facsims. ; 28 cm.|
Volume I of the report gives emission results for a spark-ignited, largebore, reciprocating, internal-combustion engine operating both under baseline (normal) conditions, and with combustion modification controls to reduce NOx emissions to levels below the proposed new source performance standard (NSPS) for such engines. Exhaust gas measurements included (in addition to continuous monitoring of criteria gas emissions) total organics in two boiling point ranges, compound category information within these ranges, specific quantitation of semivolatile organic priority pollutants, flue gas concentrations of 73 trace elements, and particulates. Exhaust NOx emissions were reduced almost 50 percent, from a baseline level of 1,260 ng/J (730 to 420 ppm corrected to 15 percent O2 dry) by increasing the operating air /fuel ratio of the engine. Accompanying the reduction was a slight increase in engine efficiency. CO, methane, total hydrocarbon, and total semivolatile organic compound emissions were increased from 10 to 65 percent under low-NOx operation. However, total nonvolatile organic emissions decreased 55 percent. The organic emissions for both tests consisted primarily of aliphatic hydrocarbons with some carboxylic acids, phenols, and low-molecular-weight fused-ring aromatics. POMs were detected in concentrations below 4 micrograms/dscm.
"January 1986." Final. "Project Officer: R.E. Hall". "Prepared for Office of Air Quality Planning and Standards; prepared by Air and Energy Engineering Research Laboratory"--Cover. Includes bibliographical references. "EPA/600/7-86-002a"--V. I. "EPA/600/7-86-002b"--V. II.
V. I. Technical results -- V. II. Data supplement.