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SAE J 2458
- Exhaust Brake Dynamometer Test and Capability Rating Procedure
- standard by SAE International, 07/01/1998
- Publisher: SAE
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This SAE Recommended Practice has been adopted by SAE to specify: a. A basis for net engine retarder power rating; b. Reference inlet air test conditions; c. A method for correcting observed engine retarder power to reference conditions; d. A method for determining net engine retarder power with a dynamometer.This test code document is applicable to engine exhaust retarders on four-stroke compression ignition (CI), with and without charge air cooling. This document does not apply to aircraft, marine, spark ignition (SI), two-stroke compression ignition (CI) or mechanical super-charged ignition engines, compression release retarders, or combination exhaust and compression release retarders.