Evaporative Emission Measurements with the Shed - A Second Progress Report 690502

This paper covers progress made by General Motors in development and use of the SHED technique since report of its initial development to SAE in January, 1968. Additional details are given on SHED leakage, interior temperature, and car background emission. Auxiliary equipment developed to facilitate evaporative emission testing is described. Methods of emission control hardware evaluation are discussed, for which the SHED technique has unique capability.


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