Причина отмены This test method covered an engine test procedure for the measurement of the effects of automotive engine oils on the fuel economy of passenger cars and light-duty trucks with gross vehicle weight of 3856 kg or less. The tests are conducted on a dynamometer test stand using a specified spark-ignition engine with a displacement of 4.6-L. It applies to multiviscosity grade oils used in these applications.

Formerly under the jurisdiction of Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants, this test method was withdrawn in January 2022 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

Значение и использование

5.1 Test Method—The data obtained from the use of this test method provide a comparative index of the fuel-saving capabilities of automotive engine oils under repeatable laboratory conditions. A baseline calibration oil (hereafter referred to as BC oil) has been established for this test to provide a standard against which all other oils can be compared. The BC oil is an SAE 5W-30 grade fully formulated lubricant. There is a direct correlation of Test Method D6837 (Sequence VIB) Fuel Economy Improvement (FEI) by percent with the fuel economy results obtained from vehicles representative of current production running under the current EPA testing cycles. The test procedure was not designed to give a precise estimate of the difference between two test oils without adequate replication. Rather, it was developed to compare a test oil to BC oil. Companion test methods used to evaluate engine oil performance for specification requirements are discussed in the latest revision of Specification D4485.

5.2 Use—The Sequence VIB test method is useful for engine oil fuel economy specification acceptance. It is used in specifications and classifications of engine lubricating oils, such as the following:

5.2.1 Specification D4485.

5.2.2 API Publication 1509.

5.2.3 SAE Classification J304.

5.2.4 SAE Classification J1423.

Область применения

1.1 This test method covers an engine test procedure for the measurement of the effects of automotive engine oils on the fuel economy of passenger cars and light-duty trucks with gross vehicle weight of 3856 kg or less. The tests are conducted on a dynamometer test stand using a specified spark-ignition engine with a displacement of 4.6-L. It applies to multiviscosity grade oils used in these applications.

1.2 This test method also provides for the running of an abbreviated length test that is referred to as the VIBSJ. The procedure for VIBSJ is identical to the Sequence VIB with the exception of the items specifically listed in Annex A13. The procedure modifications listed in Annex A13 refer to the corresponding section of the Sequence VIB test method.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3.1 Exceptions—Where there is no direct SI equivalent such as screw threads, National Pipe Threads/diameters, tubing size, or single source supply equipment specifications. Brake Specific Fuel Consumption is measured in kilograms per kilowatthour. In Figs. A2.4, A2.5, and A2.8, inch-pound units are to be regarded as standard.

1.4 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.

1.5 This test method is arranged as follows:

Subject

Section

Introduction

 

Scope

1

Referenced Documents

2

Terminology

3

Summary of Test Method

4

Significance and Use

5

Apparatus

6

 General

6.1

 Test Engine Configuration

6.2

 Laboratory Ambient Conditions

6.3

 Engine Speed and Torque Control

6.4

  Dynamometer

6.4.1

  Dynamometer Torque

6.4.2

 Engine Cooling System

6.5

 External Oil System

6.6

 Fuel System

6.7

  Fuel Flow Measurement

6.7.2

  Fuel Temperature and Pressure Control to
   the Fuel Flowmeter

6.7.3

  Fuel Temperature and Pressure Control to
   Engine Fuel Rail

6.7.4

 Fuel Supply Pumps

6.7.5

  Fuel Filtering

6.7.6

 Engine Intake Air Supply

6.8

  Intake Air Humidity

6.8.1

  Intake Air Filtration

6.8.2

  Intake Air Pressure Relief

6.8.3

 Temperature Measurement

6.9

  Thermocouple Location

6.9.5

 AFR Determination

6.10

 Exhaust and Exhaust Back Pressure Systems

6.11

  Exhaust Manifolds

6.11.1

  Laboratory Exhaust System

6.11.2

  Exhaust Back Pressure

6.11.3

 Pressure Measurement and Pressure Sensor
  Locations

6.12

  Engine Oil

6.12.2

  Fuel to Fuel Flowmeter

6.12.3

  Fuel to Engine Fuel Rail

6.12.4

  Exhaust Back Pressure

6.12.5

  Intake Air

6.12.6

  Intake Manifold Vacuum/Absolute Pressure

6.12.7

  Coolant Flow Differential Pressure

6.12.8

  Crankcase Pressure

6.12.9

 Engine Hardware and Related Apparatus

6.13

  Test Engine Configuration

6.13.1

  ECM/EEC (Engine Control) Module

6.13.2

  Thermostat/Orifice Plate

6.13.3

  Intake Manifold

6.13.4

  Flywheel

6.13.5

  Wiring Harnesses

6.13.6

  EGR Block-Off Plate

6.13.7

  Oil Pan

6.13.8

  Oil Pump Screen and Pickup Tube

6.13.9

  Idle Speed Control Solenoid (ISC) Block-Off
   Plate

6.13.10

  Engine Water Pump

6.13.11

  Thermostat Housing

6.13.12

  Oil Filter Adapter

6.13.13

  Fuel Rail

6.13.14

 Miscellaneous Apparatus Related to Engine
  Operation

6.14

  Timing Light

6.14.1

Reagents and Materials

7

 Engine Oil

7.1

 Test Fuel

7.2

 Engine Coolant

7.3

 Cleaning Materials

7.4

Preparation of Apparatus

8

 Test Stand Preparation

8.2

Engine Preparation

9

 Cleaning of Engine Parts

9.2

 Engine Assembly Procedure

9.3

  General Assembly Instructions

9.3.1

  Bolt Torque Specifications

9.3.2

  Sealing Compounds

9.3.3

  Harmonic Balancer

9.3.5

  Oil Pan

9.3.6

  Intake Manifold

9.3.7

  Camshaft Covers

9.3.8

  Thermostat

9.3.9

  Thermostat Housing

9.3.10

  Coolant Inlet

9.3.11

  Oil Filter Adapter

9.3.12

  Dipstick Tube

9.3.13

  Water Pump

9.3.14

  Sensors, Switches, Valves, and Positioners

9.3.15

  Ignition System

9.3.16

  Fuel Injection System

9.3.17

  Intake Air System

9.3.18

  Engine Management System (Spark and Fuel
   Control)

9.3.19

  Accessory Drive Units

9.3.20

  Exhaust Manifolds

9.3.21

  Engine Flywheel and Guards

9.3.22

  Lifting of Assembled Engines

9.3.23

  Engine Mounts

9.3.24

Calibration

10

 Stand/Engine Calibration

10.1

  Procedure

10.1.1

  Reporting of Reference Results

10.1.2

  Analysis of Reference/Calibration Oils

10.1.3

  Instrument Calibration

10.2

  Engine Torque Measurement System

10.2.1

  Fuel Flow Measurement System

10.2.2

  Coolant Flow Measurement System

10.2.3

  Thermocouple and Temperature Measurement
   System

10.2.4

  Humidity Measurement System

10.2.5

  Other Instrumentation

10.2.6

Test Procedure

11

 Preparation for Initial Start-up of New Engine

11.1

  External Oil System

11.1.1

  Flush Effectiveness Demonstration

11.1.2

  Preparation for Oil Charge

11.1.3

  Oil Charge for Coolant Flush

11.1.4

  Engine Coolant Charge for Coolant Flush

11.1.5

 Initial Engine Start-up

11.2

 Coolant Flush

11.3

 New Engine Break-In

11.4

  Oil Charge for Break-In

11.4.2

  Break-In Operating Conditions

11.4.3

 Routine Test Operation

11.5

  Start-Up and Shutdown Procedures

11.5.8

  Flying Flush Oil Exchange Procedures

11.5.9

  Test Operating Stages

11.5.10

  Stabilization to Stage Conditions

11.5.11

  Stabilized BSFC Measurement Cycle

11.5.12

  Data Logging

11.5.13

  BC Oil Flush Procedure for BC Oil Before Test
   Oil

11.5.14

 BSFC Measurement of BC Oil Before Test Oil

11.5.15

  Test Oil Flush Procedure

11.5.16

  Test Oil Aging

11.5.17

  BSFC Measurement of Aged (Phase I) Test Oil

11.5.18

  Aging Phase II

11.5.19

  BSFC Measurement of Aged (Phase II) Test Oil

11.5.21

  BC Oil Flush Procedure for BC Oil After Test Oil

11.5.22

  BSFC Measurement for BC Oil After Test Oil

11.5.23

  General Test Data Logging Forms

11.5.24

  Diagnostic Review Procedures

11.5.25

 Determination of Test Results

12

  FEI1 and FEI2 Calculations

12.1

 Final Test Report

13

  Validity Statement

13.1

  Report Format

13.2

Precision and Bias

14

 Precision

14.1

 Validity

14.2

  Test Stand Calibration Status

14.2.1

  Validity Interpretation of Deviant Operational
   Conditions

14.2.2

 Bias

14.3

Keywords

15

 

 

Annexes

 

Role of ASTM TMC

Annex A1

Detailed Specifications and Drawings of Apparatus

Annex A2

Oil Heater Cerrobase Refill Procedure

Annex A3

Engine Part Number Listing

Annex A4

Flying Flush Checklists

Annex A5

Safety Precautions

Annex A6

Report Format

Annex A7

Statistical Equations for Mean and Standard
 Deviations

Annex A8

Oil Sump Full Level Determination Consumption
 Measurement Calibration Procedure

Annex A9

Fuel Injector Evaluation

Annex A10

Pre-test Maintenance Checklist

Annex A11

Blow-by Ventilation System Requirements

Annex A12

VIBSJ Abbreviated Length Test Requirements

Annex A13

 

 

Appendix

 

Procurement of Test Materials

Appendix X1