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SAE J35 (OCT2002)

Current Revision

Diesel Smoke Measurement Procedure

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This SAE Recommended Practice applies to the dynamometer test procedure which can be used to assess the smoke emission characteristics of vehicular diesel engines. In particular, this procedure describes the smoke test cycle, equipment and instrumentation, instrument checks, chart reading, and calculation for evaluation of an engine's transient smoke emission characteristic. In addition, this procedure offers guidelines to be used in establishing correlation between full flow in-line and end-of-line opacimeters. Since the type of test described here is transient in nature, a fast responding full flow opacimeter is required for the smoke measurements. Slow responding or sampling, or both, type instruments must not be used since they typically have excessive and variable response delays and do not provide an accurate measurement of an engine's transient smoke characteristics. NOTE: It is recommended that whenever this procedure is cited, any additional or modified test conditions must be clearly reported.

SDO SAE: SAE International
Document Number J35
Publication Date Oct. 21, 2002
Language en - English
Page Count 15
Revision Level 200210
Supercedes
Committee
Publish Date Document Id Type View
Oct. 21, 2002 J35_200210 Revision
March 1, 1995 J35_199503 Revision
Sept. 1, 1988 J35_198809 Revision
Jan. 1, 1973 J35_197301 Revision