GB/T 3475-2025Requirement and test method for speed governing system of marine diesel engine (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

This document replaces GB/T 3475-2008 "Technical requirements and test methods for speed control systems of marine diesel engines" and is compatible with GB/T 3475- Compared with 2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) The definition of speed regulation system (see 3.1, 2008 edition, 2.1) and the definition of steady-state speed regulation (see 3.3, 2008 edition) have been changed. 2.11);

b) Deleted the transition process of speed regulation, rated power, rated speed, rated operating conditions, maximum instantaneous speed, no-load speed, minimum Definitions of instantaneous speed and speed at partial load (see 2.2 to 2.9 of the 2008 edition);

c) Deleted the recommended speed regulator in Table 1 (see 3.1 of the 2008 edition);

d) The test classification has been changed (see 5.1, 4.1 of the 2008 edition);

e) The test method for determining the speed fluctuation rate has been modified (see 5.3.2.2, 4.3.2.2 of the 2008 edition);

f) The sudden load method has been changed (see 5.4.3.3, 4.4.3.1.3 of the 2008 edition);

g) Factory test has been deleted (see 5.6 of the 2008 edition).

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the National Technical Committee for Standardization of Marine Machinery (SAC/TC 137).

This document was drafted by: China Shipbuilding Industry Corporation (Group) Co., Ltd., Yantai Harbin Engineering University Research Institute, China Shipbuilding Industry Corporation Comprehensive Technical and Economic Research Institute, China Shipbuilding Industry Corporation No. 711 Research Institute, Dalian COSCO Shipping Maritime Engineering Technology Co., Ltd., Nanyue Electric Control (Hengyang) Industrial Technology Co., Ltd., Zhejiang Yangpu Diesel Engine Co., Ltd., and Zhejiang Hexing Shipbuilding Co., Ltd.

The main drafters of this document are: Gong Man, Sun Meng, Zhou Weizhong, Song Enzhe, Zhang Dongming, Huang Danqing, Wang Hailong, Liu Yufeng, Zhang Wenjian, Xiang Heping, Wang Guoping, Ke Zhixiang, Wu Jinming, Zheng Weimin, and Chen Cunyu.

The previous versions of this document and the documents it replaces are as follows.

--First published in 1983 as GB/T 3475-1983;

--In the first revision in 2008, the contents of GB/T 3476-1983 “Test methods for speed control systems of marine diesel engines” were incorporated;

--This is the second revision.

Technical requirements for marine diesel engine speed control system and Test methods

1 Scope

This document describes the technical requirements and test methods for marine diesel engine speed control systems.

This document applies to the design, manufacture and acceptance of marine diesel engine speed control systems.

2 Normative references

GB/T 2820.5-2009

GB/T 6809.7

GB/T 21404

3 Terms and Definitions

The terms and definitions defined in GB/T 6809.7, GB/T 21404 and the following apply to this document.