ASTM D6201-19

1.1 This 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.

1.2 The 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.

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given throughout this test method.

1.5 This 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
Laboratory Facilities	6.1
Engine and Cylinder Head Build-Up and Measurement Area	6.1.1
Engine Operating Area	6.1.2
Fuel Injector Testing Area	6.1.3
Intake Valve Rinsing and Parts Cleaning Area	6.1.4
Parts Rating and Intake Valve Weighing Area	6.1.5
Test Stand Laboratory Equipment	6.2
Test Stand Configuration	6.2.1
Dynamometer Speed and Load Control System	6.2.2
Intake Air Supply System	6.2.3
Exhaust System	6.2.4
Fuel Supply System	6.2.5
Engine Control Calibration	6.2.6
Ignition System	6.2.7
Engine Coolant System	6.2.8
External Oil System	6.2.9
Temperature Measurement Equipment and Locations	6.2.10
Pressure Measurement Equipment and Locations	6.2.11
Flow Measurement Equipment and Locations	6.2.12
Speed and Load Measurement Equipment and Locations	6.2.13
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