GB/T 10398-2026 General gasoline engines—Evaluation and measurement of vibration English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 10398-2026
General gasoline engines - Evaluation and measurement of vibration
通用汽油机 振动评级和测试方法
Issue date: 2026-08-27 Implementation date: 2027-09-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Vibration Rating
4.1 Vibration Classes
4.2 Vibration Class Evaluation
5 Test Methods
5.1 Test Equipment and Instruments
5.2 Test Environment
5.3 Mounting Conditions
5.4 Test Operating Conditions
5.5 Vibration Velocity Measurement
6 Calculation and Recording of Measurement Results
6.1 Calculation of Vibration Severity
6.2 Calculation of Equivalent Vibration Severity
6.3 Data Recording
7 Test Report
7.1 Content of Test Report
7.2 Format of Test Report
Annex A (Normative) Test Report for Vibration Quality of Engines
Figure 1 Schematic Diagram of Sensor Positions for Vertical Engines
Figure 2 Schematic Diagram of Sensor Positions for Horizontal Engines
Figure 3 Schematic Diagram of Sensor Positions for V-Type Engines
Table 1 Evaluation Classes for Vibration Quality of Engines
Table A.1 Vibration Test Record Sheet
Table A.2 Vibration Quality Test Report
General-purpose Gasoline Engines — Vibration Rating and Test Methods
1 Scope
This document specifies the rating of vibration quality for general-purpose gasoline engines and describes vibration test methods.
This document applies to vibration tests of general-purpose gasoline engines with power up to 30 kW and other spark-ignition engines.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2298 Mechanical vibration, shock and condition monitoring — Vocabulary
GB/T 7184-2023 Reciprocating internal combustion engines — Methods for vibration evaluation
GB/T 11349.3 Vibration and shock — Experimental determination of mechanical mobility — Part 3: Impulse excitation method
GB/T 13824 Mechanical vibration of rotating and reciprocating machinery — Requirements for vibration severity measuring instruments
GB/T 14412 Mechanical vibration and shock — Mechanical mounting of accelerometers
JB/T 5135.1 General-purpose gasoline engines — Part 1: Technical specification
3 Terms and Definitions
The terms and definitions defined in GB/T 2298, GB/T 7184-2023 and the following terms and definitions apply to this document.
3.1
vibration severity
One or a set of numerical values such as peak values, mean values, root-mean-square values or other parameters describing vibration, involving multiple transient values or multiple squared values.
Note: Vibration severity is a general term. It was frequently used for vibration velocity in the past and is now also applied to displacement, acceleration, etc.
[Source: GB/T 7184-2023, 3.1]
3.2
equivalent vibration severity
A comprehensive characteristic parameter describing the vibration state of general-purpose gasoline engines.
Note: Denoted by “Vs”.
3.3
frequency-response function; FRF
The ratio of the Fourier transform of the motion response of a linear system related to frequency to the Fourier transform of the excitation force.
4 Vibration Rating
4.1 Vibration Classes
The vibration quality of general-purpose gasoline engines (hereinafter referred to as “engines”) is classified into four grades A, B, C and D according to the value of equivalent vibration severity Vs.
Grade A represents the minimum vibration and Grade D the maximum vibration.
4.2 Vibration Class Evaluation
The evaluation values for engine vibration quality classes are shown in Table 1.
GB/T 10398-2026 General gasoline engines—Evaluation and measurement of vibration English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 10398-2026
General gasoline engines - Evaluation and measurement of vibration
通用汽油机 振动评级和测试方法
Issue date: 2026-08-27 Implementation date: 2027-09-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Vibration Rating
4.1 Vibration Classes
4.2 Vibration Class Evaluation
5 Test Methods
5.1 Test Equipment and Instruments
5.2 Test Environment
5.3 Mounting Conditions
5.4 Test Operating Conditions
5.5 Vibration Velocity Measurement
6 Calculation and Recording of Measurement Results
6.1 Calculation of Vibration Severity
6.2 Calculation of Equivalent Vibration Severity
6.3 Data Recording
7 Test Report
7.1 Content of Test Report
7.2 Format of Test Report
Annex A (Normative) Test Report for Vibration Quality of Engines
Figure 1 Schematic Diagram of Sensor Positions for Vertical Engines
Figure 2 Schematic Diagram of Sensor Positions for Horizontal Engines
Figure 3 Schematic Diagram of Sensor Positions for V-Type Engines
Table 1 Evaluation Classes for Vibration Quality of Engines
Table A.1 Vibration Test Record Sheet
Table A.2 Vibration Quality Test Report
General-purpose Gasoline Engines — Vibration Rating and Test Methods
1 Scope
This document specifies the rating of vibration quality for general-purpose gasoline engines and describes vibration test methods.
This document applies to vibration tests of general-purpose gasoline engines with power up to 30 kW and other spark-ignition engines.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2298 Mechanical vibration, shock and condition monitoring — Vocabulary
GB/T 7184-2023 Reciprocating internal combustion engines — Methods for vibration evaluation
GB/T 11349.3 Vibration and shock — Experimental determination of mechanical mobility — Part 3: Impulse excitation method
GB/T 13824 Mechanical vibration of rotating and reciprocating machinery — Requirements for vibration severity measuring instruments
GB/T 14412 Mechanical vibration and shock — Mechanical mounting of accelerometers
JB/T 5135.1 General-purpose gasoline engines — Part 1: Technical specification
3 Terms and Definitions
The terms and definitions defined in GB/T 2298, GB/T 7184-2023 and the following terms and definitions apply to this document.
3.1
vibration severity
One or a set of numerical values such as peak values, mean values, root-mean-square values or other parameters describing vibration, involving multiple transient values or multiple squared values.
Note: Vibration severity is a general term. It was frequently used for vibration velocity in the past and is now also applied to displacement, acceleration, etc.
[Source: GB/T 7184-2023, 3.1]
3.2
equivalent vibration severity
A comprehensive characteristic parameter describing the vibration state of general-purpose gasoline engines.
Note: Denoted by “Vs”.
3.3
frequency-response function; FRF
The ratio of the Fourier transform of the motion response of a linear system related to frequency to the Fourier transform of the excitation force.
4 Vibration Rating
4.1 Vibration Classes
The vibration quality of general-purpose gasoline engines (hereinafter referred to as “engines”) is classified into four grades A, B, C and D according to the value of equivalent vibration severity Vs.
Grade A represents the minimum vibration and Grade D the maximum vibration.
4.2 Vibration Class Evaluation
The evaluation values for engine vibration quality classes are shown in Table 1.
