Views: 0 Author: Site Editor Publish Time: 2025-02-27 Origin: Site
In order to ensure the quality, safety and efficient operation of fuel injection pumps, standards and specifications have been developed by various countries and industry organizations. This article will focus on the industry standards and specifications for fuel injection pumps in detail.
1. International Standards
The standards set by the International Organization for Standardization (ISO) provide a unified framework for the globalized production and adaptation of fuel injection pumps. For example, ISO 7612:2009 has standardized the installation dimensions of inline fuel injection pumps and high-pressure fuel supply pumps in common rail fuel injection systems, including the connection method between the pump body and the engine, the relative position and compatibility requirements. Although this standard has been repealed, its technical principles have been absorbed by subsequent standards. Another ISO 7879:1983 is for the installation dimensions of cradle type in-line fuel injection pumps for road vehicles, emphasizing the reliability of the pump body fixing and compatibility with the vehicle frame. Although the same standard has been repealed, its requirements for safety and adaptability are still of reference value.
In the area of testing, ISO 4008-3:1987 details test procedures for fuel injection pumps, covering the verification of the performance of mechanical, electronic and diesel injection pumps, including the control of the test environment, the acquisition and analysis of data, and how the results of the tests can be applied to maintenance improvements. Although these standards are very old, they have laid the foundation for the construction of a modern test system.
2.Domestic standards
China's fuel injection pump standard system is based on national standards (GB/T) and machinery industry standards (JB/T), both international standards and localized features. For example:
GB/T 25368-2010 specifies the technical requirements of high-pressure fuel injection pump assembly for electronically controlled common rail system, covering the material selection, manufacturing tolerance and durability indexes of the core components such as camshaft, plunger coupling, etc., and is applicable to many fields such as automobiles, marine vessels and construction machinery.
JB/T 10715-2007 is equivalent to the international standard ISO 7299:1996, which specifies the installation dimensions of the flanges on the end face of the injection pumps in detail, and clarifies the flange dimensions and tolerance ranges of 9 types of distributor-type and inline-type injection pumps through illustrations and tables, so as to ensure the interchangeability of the products of different manufacturers.
JB/T 9731.1-2010 focuses on the technical conditions of camshafts of diesel injection pumps, from material hardness, surface roughness to dynamic balance are strictly defined, and incorporates reliability assessment methods.
In addition, the standardization of terminology is the basis of technical communication, GB/T 10826.1-2007 systematically defined the injection pump related terms, such as “fuel supply pre-stroke”, “fuel supply unevenness”, etc., to provide a unified language for design, manufacturing and maintenance.
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