This paper describes the General Motors Mobile Emission Laboratory. Information is given on the design criteria and concept, construction features of the trailer and a discussion of the instrumentation needed to conduct vehicle emission tests.
Primary applications include customer car field surveillance and assistance to assembly plant emission testing. The mobile laboratory has a temperature-controlled area, allowing testing regardless of outside weather conditions. Both concentration and mass emission testing can be done with sufficient flexibility to adapt to future emission standards. A custom built semi-trailer was chosen to fulfill the needs of the mobile lab.
A design study was undertaken to determine the best way all the necessary components could be packaged in a semi-trailer body.