Diesel engine oils
AssigneeChevron Oronite Company LLC
InventorYue-Rong Li
Life of this patent
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Abstract
A lubricating oil additive composition comprising at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200; at least one polyalkenyl succinimide; a first phenate detergent having a TBN of the actives of greater than about 60 to about 200; and a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.
Claims13
A lubricating oil additive composition comprising
- a. at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
- b. at least one polyalkenyl succinimide;
- c. a first phenate detergent having a TBN of the actives of greater than about 60 to about 200;
- and
- d. a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.
A lubricating oil composition comprising
- a. a major amount of oil of lubricating viscosity;
- b. at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
- c. at least one polyalkenyl succinimide;
- d. a first phenate detergent having a TBN of the actives of greater than about 60 to about 200;
- and
- e. a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.
A method for operating a diesel locomotive engine comprising lubricating said diesel locomotive engine with a lubricating oil composition comprising
- a. a major amount of an oil of lubricating viscosity;
- b. at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
- c. at least one polyalkenyl succinimide;
- d. a first phenate detergent having a TBN of the actives of greater than about 60 to about 200;
- and
- e. a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.
A method of improving TBN retention wherein the lubricating oil composition comprises
- a. a major amount of an oil of lubricating viscosity;
- b. at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
- c. at least one polyalkenyl succinimide;
- d. a first phenate detergent having a TBN of the actives of greater than about 60 to about 200;
- and
- e. a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.
A method for operating a diesel locomotive engine comprising lubricating said diesel locomotive engine with a lubricating oil composition comprising
- a. a major amount of an oil of lubricating viscosity;
- and
- b. at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
- c. at least one polyalkenyl succinimide;
- d. a first phenate detergent having a TBN of the actives of greater than about 60 to about 200;
- and
- e. a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.
A method for operating an inland marine engine comprising lubricating said inland marine engine with a lubricating oil composition comprising
- a. a major amount of an oil of lubricating viscosity;
- and
- b. at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
- c. at least one polyalkenyl succinimide;
- d. a first phenate detergent having a TBN of the actives of greater than about 60 to about 200;
- and
- e. a second phenate detergent having a TBN of the actives of greater than about 200 to about 400
A method of improving TBN retention comprising lubricating an engine with a lubricating oil composition having
- a. a major amount of an oil of lubricating viscosity;
- b. at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
- c. at least one polyalkenyl succinimide;
- d. a first phenate detergent having a TBN of the actives of greater than about 60 to about 200;
- and
- e. a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.
Dependencies are inferred from the claim text.