A cooperative test program was conducted by the CRC-APRAC CAPI-1-64 Composition of Diesel Exhaust Program Group to evaluate the technical aspects of a proposed EPA recommended Heavy Duty Diesel Emission Measurement and Test Procedure. The proposed changes affected the sampling configurations and the types of instruments used.Six participants studied the effects of a number of variables on the proposed changes and evaluated some alternative systems that included both CHEMI and NDIR instruments. The tests were conducted at one site using a multi-cylinder engine operating on the 13-Mode Cycle.Equivalency of systems was demonstrated and the best performance was obtained with a special NDIR system.
Cooperative Study of Heavy Duty Diesel Emission Measurement Methods
Sae Technical Papers
1978 Automotive Engineering Congress and Exposition ; 1978
1978-02-01
Conference paper
English
Approaches to meet Heavy duty Diesel Emission Regulations
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