Diesel engine cooling system compositions
AssigneeFleetguard, Inc.
InventorsRichard D. Hercamp, Roy D. Hudgens
Life of this patent
Estimating the term…
Abstract
A heavy duty supplemental cooling composition for use in diesel engines which comprises a sodium-free buffer, a cavitation liner pitting inhibitor, a metal corrosion and hot surface corrosion inhibitor, a defoamer, a hot surface deposition and scale inhibitor and a detergent. An internal leakage trace element is included to detect leakage into the engine's lubricating oil.
Claims10
A heavy duty supplemental cooling additive composition for use in diesel engine coolants which performs the functions of buffering, liner pitting inhibition, metal corrosion and hot surface corrosion protection, defoaming and scale inhibition, said additive comprising:
- (a) a sodium-free buffer containing at least one compound selected from the group consisting of borate and phosphate salts,
- (b) a cavitation liner pitting inhibitor containing at least one compound selected from the group consisting of nitrite and molybdate salts,
- (c) a metal corrosion and hot surface corrosion inhibitor containing at least one compound selected from the group consisting of nitrates, silicates and azole compounds,
- (d) a defoamer containing at least one compound selected from the group consisting of silicone defoamers, alcohols and glycols, and
- (e) a hot surface deposition and scale inhibitor containing at least one compound selected from the group consisting of phosphonates, polyacrylates and sulfonate compounds.
A heavy duty supplemental cooling additive composition for use in diesel engine coolants which performs the functions of buffering, liner pitting inhibition, metal corrosion and hot surface corrosion protection, defoaming, scale inhibition and detergency, said additive comprising:
- (a) a sodium-free buffer containing at least one compound selected from the group consisting of borate and phosphate salts,
- (b) a cavitation liner pitting inhibitor containing at least one compound selected from the group consisting of nitrite and molybdate salts,
- (c) a metal corrosion and hot surface corrosion inhibitor containing at least one compound selected from the group consisting of nitrates, silicates and azole compounds,
- (d) a defoamer containing at least one compound selected from the group consisting of silicone defoamers, alcohols and glycols,
- (e) a hot surface deposition and scale inhibitor containing at least one compound selected from the group consisting of phosphonates, polyacrylates and sulfonate compounds, and
- (f) a detergent containing at least one compound selected from the group consisting of non-ionic and anionic surfactants.
A heavy duty supplemental cooling additive composition comprising:
- ______________________________________ Approximate Component Weight Percentage ______________________________________ Dipotassium Phosphate 36.215 Sodium Molybdate Dihydrate 8.607 Potassium Nitrite 9.074 Potassium Silicate 3.44 Disodium Adipate 6.148 Mercaptobenzothiazole 6.148 Tolyltriazole 3.689 Potassium Nitrate 19.880 Polyethylene oxide 0.060 Calcium Sulfonate 1.845 Polyethoxylated alcohol 1.845 Sodium Xylene Sulfonate 1.082 Silicone Antifoam 0.369 Copolymer of methacrylic acid and 0.615 2-acrylamido-2-methylpropane sulfonic acid Dye 0.246 Fluorescent Dye 0.123 Polyacrylate Scale Inhibitor 0.615 ______________________________________
Dependencies are inferred from the claim text.