ANSI/ASTM D6891a-2006 评估顺序IVA火花点火式发动机中汽车发动机油的试验方法

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                   【英文标准名称】:     Test Method for Evaluation of Automotive Engine Oils in the Sequence IVA Spark-Ignition Engine            【原文标准名称】:     评估顺序IVA火花点火式发动机中汽车发动机油的试验方法            【标准号】:     ANSI/ASTM D6891a-2006            【标准状态】:     作废            【国别】:     美国            【发布日期】:     2006    【实施或试行日期】: 2006-11-21【发布单位】: 美国国家标准学会(US-ANSI)【起草单位】: ANSI【标准类型】: ()【标准水平】: ()【中文主题词】: 汽车;发动机油;评估;顺序;火花点火;火花点火发动机;试验【英文主题词】: Automobiles;Engine oils;Evaluation;Sequences;Spark ignitions;Spark-ignition engines;Testing【摘要】: This test method measures the ability of crankcase oil to control camshaft lobe wear for spark-ignition engines equipped with an overhead valve-train and sliding cam followers. This test method is designed to simulate extended engine idling vehicle operation. The Sequence IVA Test Method uses a Nissan KA24E engine. The primary result is camshaft lobe wear (measured at seven locations around each of the twelve lobes). Secondary results include cam lobe nose wear and measurement of iron wear metal concentration in the used engine oil. Other determinations such as fuel dilution of crankcase oil, non-ferrous wear metal concentrations, and total oil consumption, can be useful in the assessment of the validity of the test results.   The values stated in either SI units or in other units shall be regarded separately as standard. 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. See Annex A5 for specific safety precautions.【中国标准分类号】: E34【国际标准分类号】: 75_100【页数】: 【正文语种】: 英语