Evaluating the emissions from heavy-duty construction equipment.

Details

• Creators:
  Barth, Mathew ; Durbin, Thomas D. ; Miller, J. Wayne ; Scora, George
• Corporate Creators:
  California. Dept. of Transportation. Division of Research and Innovation
• Subject/TRT Terms:
  • Earthmoving machinery
  • Motors (Diesel)
  • Exhaust gas
  • Construction equipment
  • Air
  • Pollution
  • California
• Publication/ Report Number:
  RTA 65A0197
• Resource Type:
  Tech Report
• Geographical Coverage:
  California
• Corporate Publisher:
  California. Department of Transportation
• Abstract:
  Gaseous and particle emissions from construction engines are an important fraction of the total air pollutants and are gaining increasing ; regulatory attention. Quantification of NOx and PM is necessary to inventory the contribution of the construction equipment, such as used by ; Caltrans, to atmospheric loadings, particularly for those projects in non-attainment or maintenance areas. At present, however, there is no ; model mutually accepted by Caltrans and regulatory agencies that can be used for the estimation of construction emissions or the development ; of appropriate regulations. This is due in part to a lack of emissions data from construction equipment under in-use operating conditions. The ; lack of a sound scientific basis for regulation has resulted in legal cases and other obstacles that could potentially delay or inhibit important ; transportation projects. ; The goal of this research program was to carry out initial construction equipment emissions testing and to develop an emissions model for ; construction equipment based on these in-use emissions measurements. The program included two main aspects: 1) in-field emissions and ; activity measurements; and 2) model development and validation. The emissions measurements were made on a second-by-second basis using ; a portable emissions measurement system (PEMS) to develop relationships between NOx and PM and other emissions and fuel use. These ; emissions data were subsequently used in the development of a model that allows the determination of emissions from different pieces of ; construction equipment or for construction projects as a whole.
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• Format:
  PDF
• Funding:
  65A0197
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27551/dot_27551_DS1.pdf
• File Type:
  [PDF - 8.89 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:7067e0b6934fe602753ef932dca3ee6895edd059193ec0c373c0591cbca2d3f4e34a783174d5bec689c1e24cabbfb7d4e1a2b5aef11c13f22ce349c8338f6df1