 |
Chinese Classification
Professional Classification
ICS Classification
Latest
Value-added Services
|
| Chinese National Standard Category: Air intake/exhaust system |
| English Title: | Reciprocating internal combustion engines—Measurement of sound power levels using sound pressure—Part 4:Survey method using a reference sound source |
| Chinese Title: | 往复式内燃机 声压法声功率级的测定 第4部分：使用标准声源简易法 |
| Standard No.: | GB/T 1859.4-2017 |
| Category No.: | J93 |
| Issued by: | MOHURD; AQSIQ |
| Issued on: | 2017-05-12 |
| Implemented on: | 2017-12-1 |
| Status: | to be superseded |
| Superseded by: | GB/T 1859.4-2025 Reciprocating internal combustion engines - Measurement of sound power level using sound pressure - Part 4: Survey method for use in situ |
| Superseded on: | 2026-2-1 |
| Abolished on: | |
| Superseding: | |
| Word Count: | 10500 words |
| Similar Standards: |
| Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886 |
| Copyright: Beijing COC Tech Co., Ltd. 2008-2020 |