低压汽油喷油器

[中文适用范围]： 本 SAE 推荐实践文件促进了对低压汽油发动机应用中使用的喷油器进行的评估测试和性能测量的一致性。本文件的范围仅限于汽车汽油端口燃油喷射系统中使用的电子驱动燃油喷射装置，其中燃油供应压力通常低于 1000 kPa（低压）。提供了详细的测试程序，用于确定众多 PFI 喷射器参数，包括但不限于流量曲线、泄漏、机电性能、流体兼容性和腐蚀敏感性、耐久性、振动和扭转偏转的影响、热循环影响和噪声。本文件中的标准化测量程序均为台架测试。低压汽油端口喷油器的燃油喷雾特性非常重要；然而@这些喷雾特性测试并未在本文件中提及@但在配套出版物中有所介绍：SAE J2715。对现代生产中不再常用的低压汽油喷射器的测试和参考不包括在本文件的主体中。被取代的系统例如节气门体喷射（TBI）@中央端口喷射（CPI）@压降比（PDR）@底部进油喷射器和八环图案是这种旧技术的例子。这些燃油系统组件和诊断测试在过去几十年中被广泛使用，但在当今的行业中几乎没有应用。应用于这些类型喷油器测试的历史详细测量程序已从更新的 J1832 的主要部分中删除；然而，J1832 先前版本中这些硬件项目的相关总体描述已保留在附录中以供存档之用。目的 本推荐实践文件的目的是为汽车行业的原始设备制造商和最终用户提供针对每个定义的 PFI 喷油器性能参数的中立@无偏测试。使用本文件中包含的这种统一且明确定义的测试配置@测量@数据缩减和报告程序，应显着增强一个测试实验室准确重复和验证另一个测试实验室结果的能力。这反过来应该减少为汽油 PFI 发动机开发经过验证的燃油系统所需的总时间和开销，因为喷油器制造商和发动机开发商最终可以根据 J1832 进行一组喷油器测试，而不是一组单独的测试程序对于每个客户和应用程序。 J1832 文件的具体目的是： 标准化专门与低压汽油端口燃油喷射器测试相关的术语的使用 定义与低压汽油端口燃油喷射器性能特征测量相关的参数和关键指标压力汽油端口喷油器 建立测试程序并推荐测试设备来测量关键指标，以表征性能并确保部件在整个使用寿命期间的现场可靠性 建立用于测量和表征端口喷油器的推荐数据缩减程序性能 建立报告特定数据的标准，必须记录这些数据，以便其他人解释和重现测试结果 [外文原描述]： 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. 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 types of 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 Superseded systems such as throttle body injection (TBI), central port injection (CPI), pressure-drop ratio (PDR), bottom-feed injectors, and eight-ring patternation are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 SAE J1832; however, the associated overall descriptions of these hardware items that were in previous versions of SAE J1832 have been retained in the appendix for archival purposes.Cross Reference: