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Evaluation of High Performance Two-Stroke Cycle Engine Lubricants
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English
Abstract
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.
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Citation
Callis, G. and Sytz, W., "Evaluation of High Performance Two-Stroke Cycle Engine Lubricants," SAE Technical Paper 841209, 1984, https://doi.org/10.4271/841209.Also In
Fuels and Lubricants Primer for Automotive Engineers-Second Edition
Number: SP-0671; Published: 1986-09-01
Number: SP-0671; Published: 1986-09-01
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