1.1本试验方法描述了模拟试验方法中遇到的油老化的台架程序 D7320 顺序IIIG发动机试验方法。然后，按照试验方法附录X1中顺序IIIGA发动机试验所述，测试这些老化油的运动粘度和低温可泵性 D7320 . 1.2 单位- 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.2.1 例外情况- 第节中的某些设备没有SI等效物 6. ，还有一些数字将英寸单位视为标准单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 第节给出了具体的警告声明 7. 和 8. . 1.4本试验方法安排如下: 部分 范围 1. 参考文件 2. 术语 3. 试验方法总结 4. 意义和用途 5. 仪器 6. 试剂和材料 7. 危害 8. 参考油测试和试验台校准 9 程序 10 打扫 11 试验结果的计算和确定 12 汇报 13 精度和偏差 14 关键词 15 附件 反应容器 附件A1 反应容器封头 附件A2 反应容器至顶盖密封 附件A3 搅拌器涡轮叶片 附件A4 搅拌器填料压盖 附件A5 二氧化氮刻度管 附录A6 真空系统管道 附件A7 真空捕集器冷凝器 附录A8 设置真空控制阀 附录A9 附录 样品制备和添加 附录X1 充入液态二氧化氮 附录X2 二氧化氮精密针阀 附录X3 组装机器人装置示例 附录X4 帮助建立新机器人装置的信息包 附录X5 ====意义和用途====== 5.1本台架试验方法旨在产生与ASTM TMC序列IIIGA基质参考油434、435和438在序列IIIG发动机试验中老化后获得的油老化特性相当的油老化特性。 5.2如果该方法产生的老化油与序列IIIG发动机试验产生的老化油相当，则运动粘度和MRV粘度的测量增加表明，如序列IIIG和IIIGA中所述，由于挥发和氧化，油有变稠的趋势（见试验方法附录X1） D7320 )分别进行发动机测试。 5.3本台架试验程序可能用于发动机润滑油的规格和分类，例如规格 D4485 .

1.1 This test method describes a bench procedure to simulate the oil aging encountered in Test Method D7320 , the Sequence IIIG engine test method. These aged oils are then tested for kinematic viscosity and for low-temperature pumpability properties as described in the Sequence IIIGA engine test, Appendix X1 of Test Method D7320 . 1.2 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.2.1 Exceptions— There are no SI equivalents for some apparatus in Section 6 , and there are some figures where inch units are to be regarded as standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in Sections 7 and 8 . 1.4 This test method is arranged as follows: Section Scope 1 Reference Documents 2 Terminology 3 Summary of Test Method 4 Significance and Use 5 Apparatus 6 Reagents and Materials 7 Hazards 8 Reference Oil Testing and Test Stand Calibration 9 Procedure 10 Cleaning 11 Calculations and Determination of Test Results 12 Report 13 Precision and Bias 14 Keywords 15 Annexes Reaction Vessel Annex A1 Reaction Vessel Head Annex A2 Reaction Vessel-to-Head Seal Annex A3 Agitator Turbine Blade Annex A4 Agitator Packing Gland Annex A5 Nitrogen Dioxide Graduated Tube Annex A6 Vacuum System Plumbing Annex A7 Vacuum Trap Condensers Annex A8 Setting the Vacuum Control Valve Annex A9 Appendixes Sample Preparation and Addition Appendix X1 Charging the Liquid Nitrogen Dioxide Appendix X2 Nitrogen Dioxide Precision Needle Valve Appendix X3 Example of an Assembled ROBO Apparatus Appendix X4 Information Package to Aid Setting Up a New Robo Apparatus Appendix X5 ====== Significance And Use ====== 5.1 This bench test method is intended to produce comparable oil aging characteristics to those obtained with ASTM TMC Sequence IIIGA matrix reference oils 434, 435 and 438 after aging in the Sequence IIIG engine test. 5.2 To the extent that the method generates aged oils comparable to those from the Sequence IIIG engine test, the measured increases in kinematic and MRV viscosity indicate the tendency of an oil to thicken because of volatilization and oxidation, as in the Sequence IIIG and IIIGA (see Appendix X1 in Test Method D7320 ) engine tests, respectively. 5.3 This bench test procedure has potential use in specifications and classifications of engine lubricating oils, such as Specification D4485 .