SAE J968的本部分规定了两种校准喷嘴和支架组件，用于在试验台上测试和设置柴油喷射泵。适用于:aA校准喷嘴和带有单孔孔孔板的支架组件；bA校准喷嘴和带有延迟枢轴式喷嘴的支架组件。校准喷嘴和支架组件的大致范围高达:带单孔孔孔板的300 mm3/冲程；b150 mm3/冲程，带有延迟枢轴式喷嘴。ISO 4008/3中规定了设置和维护要求。

This part of SAE J968 specifies two types of calibrating nozzle and holder assemblies intended for the testing and setting of diesel injection pumps on test benches.It applies to:aA calibrating nozzle and holder assembly with a single hole orifice plate;bA calibrating nozzle and holder assembly with a delay pintle type nozzle.The approximate range of the calibrating nozzle and holder assembly is up to:a300 mm3/stroke with the single hole orifice plate;b150 mm3/stroke with the delay pintle type nozzle.Setting and maintenance requirements are specified in ISO 4008/3.