Light-Duty Vehicle Emissions Research and Development
Southwest Research Institute (SwRI) provides comprehensive emissions research and testing expertise to an international clientele. As one of the world's premier emissions research organizations, SwRI maintains excellent facilities and continually advances the state-of-the-art in sample collection, measurement, and data analysis technologies. Serving regulatory agencies and commercial clients, the Institute's world-renowned staff provides expertise in:
SwRI research programs include:
SwRI's facilities accommodate a variety of light-duty vehicle exhaust and evaporative emission test equipment including:
SwRI's emissions laboratories are recognized by the
Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) and
accommodate North American, European, and Asian emissions test procedures, as well as most
For durability testing, SwRI offers around-the-clock mileage accumulation at speeds up to 100 mph. Twelve mileage accumulation dynamometers (MADS) with 48-inch rolls accommodate light-duty cars and trucks up to 7,000 pounds.
In dedicated facilities, the Institute also evaluates catalytic converter performance and durability. Catalytic converter test capabilities include:
SwRI rapidly and cost-effectively evaluates how fuels, fuel additives, and exhaust aftertreatment systems affect emissions.
SwRI has pioneered the development of techniques to measure emissions from alternatively fueled vehicles, including those operating on CNG, LPG, methanol, and ethanol. With the ability to measure a variety of regulated and unregulated exhaust emissions, scientists can quickly and accurately calculate organic material hydrocarbon equivalent (OMHCE) and non-methane organic gases (NMOG). As a leader in this field, SwRI has developed and published a number of procedures to quantify emissions from alternative fuels, including methods to:
SwRI's data reduction programs permit accurate emissions calculations associated with a variety of liquid and gaseous fuels. Comprehensive ASTM fuel and lubricant analyses provide detailed fuel and lubricant assays. Specialized facilities allow SwRI to blend fuel to complex specifications.
The Institute's advanced chemistry laboratories provide comprehensive chemical analyses of gaseous and particulate samples for all regulated motor vehicle emissions and for numerous unregulated emissions. Emissions most commonly characterized include:
SwRI developed and patented a direct filter injection chromatography method to measure lubricating oil contribution to exhaust particulates. In addition, the chemistry laboratory has developed or implemented procedures to measure unregulated emissions such as:
The Institute specializes in full hydrocarbon speciation according to the most recent Auto/Oil methods, using four gas chromatographs and a high-performance liquid chromatograph. For diesel speciation, SwRI can now characterize compounds up to C22, using a new quadrupole mass spectrometer and automatic thermal desorption system.
SwRI supports clients with focused and general research reports, as well as continuing technical support, as needed. Emissions testing activities are supported by specialists in:
SwRI maintains client confidentiality while avoiding any conflict of interest. When appropriate, emissions scientists and engineers present and publish technical papers for professional conferences; more than 50 papers have been presented at SAE and ASME conferences since 1990.
As an example of the Institute's commitment to quality, the Department of Emissions Research is now ISO 9002 certified and ISO/IEC Guide 25 accredited. Instrument calibrations are NIST-traceable. Complete maintenance and calibration records are maintained and may be inspected by clients.
This brochure was published in November 1997. For more information about light duty vehicle emissions research and development, contact Bruce B. Bykowski, Engine Emissions and Vehicle Research Division, Southwest Research Institute, P.O. Drawer 28510, San Antonio, Texas 78228-0510, Phone (210) 522-2937, Fax (210) 522-3950.