GB/T 15371-2023 English PDF

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GB/T 15371-2023: Reciprocating internal combustion engines - Evaluation method of torsional vibration of crankshaft system
Status: Valid

GB/T 15371: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15371-2023	189	Add to Cart	3 days	Reciprocating internal combustion engines - Evaluation method of torsional vibration of crankshaft system	Valid
GB/T 15371-2008	319	Add to Cart	3 days	Torsional vibration of crankshaft system -- Measurement and evaluation method	Obsolete
GB/T 15371-1994	239	Add to Cart	2 days	Torsional vibration of crankshaft systems--Measurement and evaluation method	Obsolete

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Basic data

Standard ID: GB/T 15371-2023 (GB/T15371-2023)
Description (Translated English): Reciprocating internal combustion engines - Evaluation method of torsional vibration of crankshaft system
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J90
Classification of International Standard: 27.020
Word Count Estimation: 10,114
Date of Issue: 2023-09-07
Date of Implementation: 2024-04-01
Older Standard (superseded by this standard): GB/T 15371-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 15371-2023: Reciprocating internal combustion engines - Evaluation method of torsional vibration of crankshaft system

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 27.020 CCSJ90 National Standards of People's Republic of China Replace GB/T 15371-2008 Torsional vibration of crankshaft system of reciprocating internal combustion engine Assessment method Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

PrefaceⅠ 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Torsional vibration calculation 2 4.1 General 2 4.2 Calculation method 2 4.3 Calculation data 2 4.4 Calculation results 2 4.5 Calculation report 3 5 Torsional vibration measurement 3 5.1 Measuring instruments 3 5.2 Working conditions 3 5.3 Angular displacement measurement 4 5.4 Record 4 5.5 Measurement report 4 6 Torsional vibration evaluation 4 6.1 General 4 6.2 Assessment parameters 5 6.3 Assessment 5 6.4 Torsional vibration speed restricted zone 6

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 15371-2008 "Measurement and Assessment Method of Torsional Vibration of Crankshaft Shaft Systems" and is consistent with GB/T 15371-2008. In addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Changed the “scope” (see Chapter 1, Chapter 1 of the.2008 edition); b) Changed “Terms and Definitions” (see Chapter 3, Chapter 3 of the.2008 edition); c) The provisions of "torsional vibration calculation" have been changed (see Chapter 4, Chapter 4 of the.2008 edition); d) The provisions of "torsional vibration measurement" have been changed (see Chapter 5, Chapter 5 of the.2008 edition); e) The provisions of "torsional vibration assessment" have been changed (see Chapter 6, Chapter 6 and Chapter 7 of the.2008 edition). Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Internal Combustion Engine Standardization Technical Committee (SAC/TC177). This document was drafted by. Shanghai Internal Combustion Engine Research Institute Co., Ltd., Shanghai Automotive Group Co., Ltd. Commercial Vehicle Technology Center, Shanghai Motor Vehicle Inspection and Certification Technology Research Center Co., Ltd., Yiyi Internet Technology Co., Ltd., Tongji University, Tianjin Internal Combustion Engine Research Institute (Tianjin Tianjin Motorcycle Technology Center), Weichai Power Co., Ltd., Shanghai New Power Automobile Technology Co., Ltd., SAIC Motor Corporation Limited Co., Ltd., Pan Asia Automotive Technology Center Co., Ltd., Hunan Liyu Gas Power Co., Ltd., Weifang Internal Combustion Engine Quality Inspection Center Co., Ltd. company. The main drafters of this document. Wang Yuanwen, Zhang Hongbo, Han Jing, Yuan Weiping, Hu Aihua, Jiang Changlong, Wang Zhiyi, Ma Qingzhen, Zhang Longbing, Wang Jiabao, Jing Yabing, Liu Tao, Wang Xiaohu, Zhou Yi, Yang Kai, Zhang Dan, Ye Huaihan, Wang Hongjian. This document was first published in.1994, revised for the first time in.2008, and this is the second revision. Torsional vibration of crankshaft system of reciprocating internal combustion engine Assessment method

1 Scope

This document describes the calculation, measurement and analysis of torsional vibrations of shafting systems driven by reciprocating internal combustion engines (hereinafter referred to as "torsional vibrations" unless otherwise stated). Assessment methods. This document applies to reciprocating internal combustion engines defined in GB/T 6072.1 (hereinafter referred to as "engines" unless otherwise stated) driven Shaft system.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 6072.1 Reciprocating internal combustion engine performance Part 1.Calibration and test methods for power, fuel consumption and oil consumption Additional requirements for general purpose engines GB/T 6072.3 Reciprocating internal combustion engine performance Part 3.Test measurements GB/T 13436 Technical requirements for torsional vibration measuring instruments

3 Terms and definitions

The terms and definitions defined in GB/T 6072.1, GB/T 13436 and the following apply to this document. 3.1 crankshaft system crankshaft system The assembly of the crankshaft and its associated rotatable parts. 3.2 torsional vibration torsionalvibration Oscillating angular deformation (torsion) of the rotating shaft system. 3.3 The maximum angular displacement measured in a section perpendicular to the axis of the shaft system between the angular position to be evaluated and any given reference position. 3.4 natural frequency naturalfrequency The inherent characteristic parameters of the structure can be obtained from the motion equations of each undamped system. Note. It is usually not necessary to calculate the natural frequency of the damping system. 3.5 natural vector naturalvector When the system vibrates at the corresponding natural frequency, the relative amplitude of each profile to any selected reference profile. ......

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