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SAE J1832

2016 Edition, October 2016

Complete Document

Low Pressure Gasoline Fuel Injector

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Product Details:

  • Revision: 2016 Edition, October 2016
  • Published Date: October 2016
  • Status: Active, Most Current
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 135
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This SAE Recommended Practice Document promotes uniformity in the evaluation tests and performance measurements that are conducted on fuel injectors that are used in low-pressure gasoline engine applications. The scope of this document is limited to electronically-actuated fuel injection devices that are utilized in automotive gasoline port fuel injection systems where the fuel supply pressure is usually below 1000 kPa (low-pressure). Detailed test procedures are provided for determining numerous PFI injector parameters, including, but not limited to, flow curves, leakage, electromechanical performance, fluid compatibility and corrosion susceptibility, durability, the effects of vibration and torsional deflection, thermal cycling effects and noise. The standardized measurement procedures in this document are all bench tests. Characterization of the fuel spray from a low-pressure gasoline port fuel injector is quite important; however, these spray characterization tests are not addressed in this document, but are covered in a companion publication: SAE J2715.

Tests and references to low-pressure gasoline injectors that are no longer commonly used in modern production are not included in the main body of this document. Superseded systems such as throttle body injection (TBI), central port injection (CPI), Pressure-Drop-Ratio (PDR), bottom-feed injectors and eight-ring patternation are examples of this older technology. Those fuel system components and diagnostic tests were extensively utilized in prior decades, but find little application in the industry today. The historical detailed measurement procedures that applied to the tests on these types of injectors have been removed from the main sections of the updated J1832; however, the associated overall descriptions of these hardware items that were in previous versions of J1832 have been retained in the Appendix for archival purposes.


The purpose of this Recommended Practice document is to provide the original equipment manufacturers and the end users within the automotive industry with a neutral, unbiased test for each defined PFI injector performance parameter. The use of such uniform and well-defined procedures for test configuration, measurement, data reduction and reporting that are contained in this document should significantly enhance the ability of one test laboratory to accurately repeat and verify the results of another. This should, in turn, reduce the overall time and overhead required to develop a proven fuel system for a gasoline PFI engine, as injector manufacturers and engine developers could ultimately conduct one set of injector tests per J1832 as opposed to a separate set of test procedures for each customer and application. The specific, stated purposes of the J1832 document are:

To standardize the use of nomenclature specifically related to the testing of low-pressure gasoline port fuel injectors

To define the parameters and key metrics that are associated with the measurement of the performance characteristics of low-pressure gasoline port fuel injectors 

To establish test procedures and recommend test equipment to measure the key metrics in order to characterize the performance and assure field reliability over the life of the component

To establish the recommended data reduction procedures for the measurement and characterization of port fuel injector performance

To establish the criteria for reporting the specific data that must be documented in order to allow others to interpret and reproduce the test results

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