1.1This test method covers an engine dynamometer test procedure for evaluation of intake valve deposit formation of unleaded spark-ignition engine fuels.2 This test method uses a Ford Ranger 2.3 L four-cylinder engine. This test method includes detailed information regarding the procedure, hardware, and operations.
1.2The ASTM Test Monitoring Center (TMC)3 is responsible for engine test stand calibration as well as issuance of information letters after test method modifications are approved by Subcommittee D02.A0 and Committee D02. Users of this test method shall request copies of recent information letters from the TMC to ensure proper conduct of the test method.
1.3The values stated in SI units are to be regarded as standard. The values in parentheses are provided for information only.
1.4This 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 applicability of regulatory limitations prior to use. Specific warning statements are given throughout this test method.
1.5This test method is arranged as follows:
|
Subject |
Section |
|
Scope |
1 |
|
Referenced Documents |
2 |
|
Terminology |
3 |
|
Summary of Test Method |
4 |
|
Significance and Use |
5 |
|
Apparatus |
6 |
|
âLaboratory Facilities |
6.1 |
|
âEngine and Cylinder Head Build-Up and Measurement Area |
6.1.1 |
|
âEngine Operating Area |
6.1.2 |
|
âFuel Injector Testing Area |
6.1.3 |
|
âIntake Valve Rinsing and Parts Cleaning Area |
6.1.4 |
|
âParts Rating and Intake Valve Weighing Area |
6.1.5 |
|
âTest Stand Laboratory Equipment |
6.2 |
|
âTest Stand Configuration |
6.2.1 |
|
âDynamometer Speed and Load Control System |
6.2.2 |
|
âIntake Air Supply System |
6.2.3 |
|
âExhaust System |
6.2.4 |
|
âFuel Supply System |
6.2.5 |
|
âEngine Control Calibration |
6.2.6 |
|
âIgnition System |
6.2.7 |
|
âEngine Coolant System |
6.2.8 |
|
âExternal Oil System |
6.2.9 |
|
âTemperature Measurement Equipment and Locations |
6.2.10 |
|
âPressure Measurement Equipment and Locations |
6.2.11 |
|
âFlow Measurement Equipment and Locations |
6.2.12 |
|
âSpeed and Load Measurement Equipment and Locations |
6.2.13 |
|
âExhaust Emissions Measurement Equipment and Location |
6.2.14 |
|
âDPFE (EGR) Voltage Measurement Equipment and Location |
6.2.15 |
|
âIgnition Timing Measurement Equipment and Location |
6.2.16 |
|
âTest Engine Hardware |
6.3 |
|
âTest Engine Parts |
6.3.1 |
|
âNew Parts Required |
6.3.2 |
|
âReusable Engine Parts |
6.3.3 |
|
âSpecial Measurement and Assembly Equipment |
6.4 |
|
Reagents and Materials |
7 |
|
Hazards |
8 |
|
Reference Fuel |
9 |
|
Preparation of Apparatus |
10 |
|
âTest Stand Preparation |
10.1 |
|
âEngine Block Preparation |
10.2 |
|
âPreparation of Miscellaneous Engine Components |
10.3 |
|
âCylinder Head Preparation |
10.4 |
|
âCylinder Head Assembly |
10.5 |
|
âCylinder Head Installation |
10.6 |
|
âFinal Engine Assembly |
10.7 |
|
Calibration |
11 |
|
âTest Stand Calibration |
11.1 |
|
âInstrumentation Calibration |
11.2 |
|
Procedure |
12 |
|
âPretest Procedure |
12.1 |
|
âEngine Operating Procedure |
12.2 |
|
âPeriodic Measurements and Functions |
12.3 |
|
âEnd of Test Procedures |
12.4 |
|
Determination of Test Results |
13 |
|
âPost-Test Intake Valve Weighing Procedure |
13.1 |
|
âPhotographs of Parts-General |
13.2 |
|
âInduction System Rating |
13.3 |
|
âDetermination of Test Validity-Engine Conformance |
13.4 |
|
Report |
14 |
|
Precision and Bias |
15 |
|
Keywords |
16 |
|
Annexes |
|
|
Detailed Specifications and Photographs of Apparatus |
Annex A1 |
|
Engine Part Number Listing |
Annex A2 |
|
Statistical Equations for Mean and Standard Deviation |
Annex A3 |
