Значение и использование

This test method was developed to assess the performance of a heavy-duty engine oil in controlling engine wear under operating conditions selected to accelerate soot production and valve-train wear in a turbocharged and aftercooled four-cycle diesel engine with sliding tappet followers equipped with exhaust gas recirculation hardware.

The design of the engine used in this test method is representative of many, but not all, modern diesel engines. This factor, along with the accelerated operating conditions, shall be considered when extrapolating test results.

Область применения

1.1 This test method, commonly referred to as the Cummins ISB Test, covers the utilization of a modern, 5.9-L, diesel engine equipped with exhaust gas recirculation and is used to evaluate oil performance with regard to valve-train wear.

1.2 The values stated in either SI units, inch-pound units, or other units are to be regarded separately as the primary units.

1.2.1 For each parameter, the primary units are shown first. Secondary units may be shown in parentheses, for information purposes only. These secondary units may or may not be exact equivalents to the primary units.

1.2.2 SI units are provided for all parameters except where there is no direct equivalent such as the units for screw threads, national pipe threads/diameters, and tubing size.

1.2.3 See also A8.1 for clarification; it does not supersede 1.2.1 and 1.2.2.

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. See Annex A1 for general safety precautions.

1.4 Table of Contents:

Section Scope1 Referenced Documents2 Terminology3 Summary of Test Method4 Significance and Use5 Apparatus6 Engine Fluids and Cleaning Solvents7 Preparation of Apparatus8 Engine/Stand Calibration and Non-Reference Oil Tests9 Test Procedure10 Calculations, Ratings, and Test Validity11 Report13 Precision and Bias14 Annexes Safety PrecautionsAnnex A1 Intake Air AftercoolerAnnex A2 The Cummins ISB Engine Build Parts KitAnnex A3 Sensor Locations and Special HardwareAnnex A4 External Oil SystemAnnex A5 Fuel SpecificationAnnex A6 Cummins Service PublicationsAnnex A7 Specified Units and FormatsAnnex A8 Oil AnalysesAnnex A9