This SAE Recommended Practice promotes uniformity in the characterization tests conducted on sprays generated by automotive fuel injectors used in both port fuel injection and gasoline-direct injection engine applications. SAE J2715 contains the detailed background, procedures and data reduction protocols for nearly all fuel spray characterization metrics that are applicable to automotive applications. It is intended to be utilized in conjunction with other SAE J documents that address injector performance metrics. These are SAE J1832 for Port Fuel Injection and the forthcoming SAE J2713 for Gasoline Direct Injectors.

Purpose

a. Standardize the use of nomenclature specifically related to gasoline fuel injector spray measurements.

b. Identify and define the key metrics that constitute the characterization of fuel sprays.

c. Establish detailed test procedures and recommend test equipment and methods to measure and quantify these key metrics.

d. Establish the recommended data reduction and analysis procedures.

e. Establish the criteria for data reporting and the required accompanying information that must be supplied in order to interpret and reproduce the test results.

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