Lubricant Compositions For Direct Injection Engines
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United States of America Patent
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Issued Date -
Feb 14, 2019
app pub date -
Feb 24, 2017
filing date -
Feb 24, 2016
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Abstract
The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and an oil soluble metal compound, wherein the metal of the oil soluble metal compound may be a group (IV) metal, which may be titanium or zirconium.
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