本文件规定了测量方法，即声功率的测量方法 往复式内燃机的液位。 本文件适用于本领域内的所有往复式内燃机 ISO 3046-1和其他内燃机的应用 标准存在。 注:在本文件中，往复式内燃机被称为发动机，除非 另有解释。交叉引用:ISO 3046-1ISO 3046-3IEC 60942ISO 6798-1IEC 61672-1ISO 6926ISO 4871ISO/TS 19425ISO 13332ISO 3744ISO 9614（所有部分）ISO 3746ISO 12001ISO 15619购买本文件时可提供的所有现行修订均包含在购买本文件中。

This document specifies the survey method, which is the measurement method of the sound power level for reciprocating internal combustion engines. This document applies to all reciprocating internal combustion engines falling within the field of application of ISO 3046-1 and other internal combustion engines where no suitable International Standard exists. NOTE In this document, reciprocating internal combustion engines are referred to as engines unless otherwise explained.Cross References:ISO 3046-1ISO 3046-3IEC 60942ISO 6798-1IEC 61672-1ISO 6926ISO 4871ISO/TS 19425ISO 13332ISO 3744ISO 9614 (all parts)ISO 3746ISO 12001ISO 15619All current amendments available at time of purchase are included with the purchase of this document.