The two-stroke cycle engine offers unique operational characteristics which make it attractive for use over a wide range of power applications. Confusion experienced by consumers regarding the choice of an appropriate lubricant for a particular application has led to widespread recommendations for lubricants which meet the solitary industrywide performance specification, BIA TC-W. Concerns that this universal usage of an outboard motor lubricant specification might lead to product misapplications initiated the development of a lubricant classification system for all types of two-stroke cycle engines.SAE, ASTM and CEC have jointly proposed a four-category classification system for industry approval. Despite the apparent suitability of the system for identifying satisfactory and inferior quality two-stroke cycle engine lubricants, some engine manufacturers and extremely quality conscious consumers desire supplemental test procedures for identifying superior quality lubricants. This paper describes some appropriate supplemental test procedures. Also, a new performance rating system for piston ring sticking is introduced, and its use is described in standard industry tests as well as the supplemental test procedures.
Evaluation of High Performance Two-Stroke Cycle Engine Lubricants
Sae Technical Papers
Passenger Car Meeting & Exposition ; 1984
1984-09-01
Aufsatz (Konferenz)
Englisch
Evaluation of high performance two-stroke cycle engine lubricants
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