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This SAE Recommended Practice was developed to provide a common understanding and usage of the technical terms useful in fuel injection systems for spark ignition engines. Additional nomenclature related to specific components is covered in the individual component sections.

This SAE Recommended Practice was developed to provide a common understanding and usage of the technical terms useful in fuel injection systems for spark ignition engines. Additional nomenclature related to specific components is covered in the individual component sections.

This SAE Recommended Practice promotes uniformity in the evaluation tests and performance measurements that are conducted on fuel injectors 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 normally less than 1000 kPa. 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.