Temperature dependency of burn-off emissions in the automobile industry

Details

• Personal Author:
  Scott KJ
• Description:
  This work characterized burn-off emissions from automobiles. After an exhaustive literature review, engine temperatures were determined to reach a maximum temperature of approximately 110 deg. C, while exhaust system components reached a maximum temperature around 600 deg. C. Metal-drawing fluids were used to bend the exhaust system components during manufacturing. Because these components were not rinsed prior to incorporation into a vehicle, residues could be left on the surfaces. An experimental test chamber was constructed to conduct controlled testing of three metalworking fluids of various types to mimic real-world conditions. Real-time particle number measurements were made using a condensation particle counter and an optical particle counter. The temperature at which burn-off begins to occur was found to be around 120 to 150 deg. C. This burn-off was found to be an evaporation-condensation phenomenon when metalworking fluid residues vaporize and condense forming fine (0.1um to 2.5um) and ultrafine (<0.1um) aerosols. The temperature dependency of this phenomenon was observed to follow the Clausius-Clapeyron equation that states as temperature increases, vapor pressure increases. Most aerosol particles were observed to be in the range of less than 0.01um to approximately 2.0um. [Description provided by NIOSH]
• Subjects:
  Aerosols Automobiles Metals Occupational Health Particulate Matter Safety Temperature
• Keywords:
  Automotive-industry Metalworking-fluids Nanotechnology Particulate-dust Particulates Temperature-effects
• Publisher:
  University of Iowa
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Dissertation
• Place as Subject:
  Iowa ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-53
• NIOSHTIC Number:
  nn:20040818
• Citation:
  Iowa City, IA: University of Iowa, 2008 May; :1-53
• Federal Fiscal Year:
  2008
• Performing Organization:
  University of Iowa
• Peer Reviewed:
  False
• Start Date:
  20050701
• Source Full Name:
  Temperature dependency of burn-off emissions in the automobile industry
• End Date:
  20290630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5e744ca79cd8ed7e37cb02ab4f297fd8cc1175a8cd8c90415a37fd7fd76dfc7f3c230dfd78a2833c439c56048bca9f50b468d9a9e29cf258da3ef742fc74587b
• Download URL:
  https://stacks.cdc.gov/view/cdc/193547/cdc_193547_DS1.pdf
• File Type:
  [PDF - 1.26 MB ]