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Dynamometer operations in Michigan represent the potential for a significant yet heretofore exempt, source for product of combustion emissions. Recent changes in the Michigan rules preclude further exemptions for new installations when regulatory thresholds are exceeded. This paper recounts, through the planning of a new dynamometer installation, the process of developing a successful compliance strategy. Key topics in the synthesis of the strategy include determination of expected emissions, permit development, selection of equipment, implementation/operation of equipment, and evaluation of equipment performance.

Ambient oil mist levels in automotive manufacturing plants where coolant is used as a metalworking fluid is an on-going concern, in particular, its effect on worker's breathing zone air quality. To find a means suppressing oil mist from being generated during these operations was studied in the laboratory, where several polymer additives were analyzed. It was found that a small amount (less than 100 ppm) of polyisobutylene (PIB) was extremely effective in suppressing mist formation by increasing the oil droplet size of typical straight mineral oil aerosols generated. Subsequent plant pilot tests confirmed these results, yielding 70-90% oil mist reductions using only 20-100 ppm PIB additions. In addition, no adverse impact was observed on the machined part quality.