GB/T 26116-2022Internal combustion engine coaxial pumps—Testing method (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 of Standardization Documents" drafted.

This document replaces GB/T 26116-2010 "Test Methods for Coaxial Pumps for Internal Combustion Engines". Compared with GB/T 26116-2010, except for the structural In addition to adjustments and editorial changes, the main technical changes are as follows.

--- Changed the scope (see Chapter 1, Chapter 1 of the.2010 edition);

--- Changed normative references (see Chapter 2, Chapter 2 of the.2010 edition);

--- Changed terms, definitions and symbols (see Chapter 3, Chapter 3 of the.2010 edition);

--- Changed the performance test acceptance level and tolerance factor (see Table 1, Table 9 of the.2010 edition);

--- Added guaranteed objects (see Section 4.2);

--- Deleted the test personnel (see 4.1.2 of the.2010 edition);

--- Deleted the feature of "clean cold water" (see 4.2.1 of the.2010 edition);

--- Deleted the test fuel (see 4.2.2 of the.2010 edition);

--- Deleted the standard reference condition (see 4.2.3 of the.2010 edition);

--- Increased acceptance level (see 4.4);

--- Increase the fluctuation range of inlet pressure and outlet pressure (see Table 2);

--- Delete the content of unstable conditions and the variation limit between repeated measurement results of the same quantity (see 4.2.6.2.2 and.2010 edition) table 5);

--- Change the allowable value of total measurement uncertainty (see Table 4, Table 7 of the.2010 edition);

--- Changed the evaluation tolerance of flow and head (see 4.4, 5.3 and 5.4 of the.2010 edition);

--- Changed the requirements for performance test measurement points (see 5.7.1, Appendix A of the.2010 edition);

--- Deleted parameter measurement (see Chapter 6 of the.2010 edition);

--- Changed the NPSH test content (see Chapter 7 of Section 5.8,.2010 edition);

--- Changed the analysis (see Chapter 6, Chapter 5 of the.2010 edition);

--- Changed the provisions of the self-priming test (see Chapter 7, Chapter 10 of the.2010 edition);

--- Changed the provisions of noise test (see Chapter 8, Chapter 8 of the.2010 edition);

--- Changed the provisions of the vibration test (see Chapter 9, Chapter 9 of the.2010 edition).

1 Scope

This document specifies the measurement and acceptance criteria, test methods, analysis, self-priming tests, noise tests for coaxial pumps of internal combustion engines (hereinafter referred to as pumps). test, vibration test method.

This document applies to acceptance tests carried out in the pump laboratory or on the pump manufacturer's test bench with a clean cold water nature liquid as the test medium. Other types of tests can be used for reference.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 1859 (all parts) Determination of sound power level by sound pressure method of reciprocating internal combustion engine

GB/T 3216-2016 Rotary Power Pump Hydraulic Performance Acceptance Test Level 1, Level 2 and Level 3

GB/T 7021 Centrifugal Pump Terminology

GB/T 29529-2013 Noise measurement and evaluation methods for pumps

3 Terms and Definitions

The terms and definitions defined in GB/T 7021 and GB/T 3216-2016 and the following terms and definitions apply to this document.