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Modification of lubricant properties in an operating all loss lubricating system

  • US 7,124,728 B2
  • Filed: 10/28/2003
  • Issued: 10/24/2006
  • Est. Priority Date: 01/24/2003
  • Status: Active Grant
First Claim
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1. A marine diesel engine system comprising:

  • a slow-speed cross head marine diesel engine with at least one cylinder;

    cylinder lubricant components proximate the engine, the components comprising;

    (i) a primary lubricant and (ii) an additive selected from the group consisting essentially of (i) an alkylamine-alkylphosphate having at least 1.25 equivalents of alkylamine to 1.0 equivalents of alkylphosphate and a nitrogen to phosphorous weight ratio of at least 0.5, (ii) 500 TBN calcium sulfonate, and (iii) mixtures thereof; and

    means for blending the primary lubricant and additive into a mixture for introduction into the cylinder when engine conditions require the mixture.

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