This recommended practice applies to nomenclature of turbocharger parts and terminology of performance. Modifying adjectives are omitted in some cases for the sake of simplicity@ However@ it is considered good practice to use such adjectives when they add to clarity and understanding.
SAE J922-1979 history
2011SAE J922-2011 Turbocharger Nomenclature and Terminology
1995SAE J922-1995 Turbocharger Nomenclature and Terminology, Recommended Practice
1988SAE J922-1988 Turbocharger Nomenclature and Terminology@ Recommended Practice
1979SAE J922-1979 Turbocharger Nomenclature and Terminology