Significance and Use
The oil in a two-stroke-cycle gasoline engine is either mixed with the fuel prior to use or is metered into the fuel supply at, or at some point prior to, its passage into the engine crankcase. The possibility of the amount of oil actually present in the engine being less than optimum always exists. Also, with some oil metering systems short periods of operation with less oil than desirable can occur when the power is increased suddenly. It has also been found that the incidence of piston scuff early in the life of the engine may be related to the lubricity of the oil used as defined by test procedures of this type.
1.1 This test method evaluates the ability of lubricants to minimize piston and bore scuffing in two-stroke-cycle spark-ignition gasoline engines.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled Bar
D439 Specification for Automotive Gasoline
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration
D874 Test Method for Sulfated Ash from Lubricating Oils and Additives
D2270 Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100C
D2700 Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
D2885 Test Method for Determination of Octane Number of Spark-Ignition Engine Fuels by On-Line Direct Comparison Technique
D2896 Test Method for Base Number of Petroleum Products by Potentiometric Perchloric Acid Titration
D4857 Test Method for Determination of the Ability of Lubricants to Minimize Ring Sticking and Piston Deposits in Two-Stroke-Cycle Gasoline Engines Other Than Outboards
D4858 Test Method for Determination of the Tendency of Lubricants to Promote Preignition in Two-Stroke-Cycle Gasoline Engines
D6593 Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions
E178 Practice for Dealing With Outlying Observations
Air-cooled gasoline engines; Combustion chamber; Dynamometer testing; Heating tests--petroleum products; Instrumental measurement--petroleum products; Lubricants (fluid); Lubricating oils; Lubricity/lubricating properties; Performance--petroleum products/applications; Piston rings; Spark plugs; Temperature tests--petroleum products; Two-stroke-cycle engines; Yamaha CE-50S test engine ;
ICS Number Code 75.100 (Lubricants, industrial oils and related products)
ASTM International is a member of CrossRef.
Citing ASTM Standards
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