Fuel compositions
AssigneeInnospec Limited
InventorsJacqueline Reid, Martin Roberts, Alan Ross, Michael James Simms
Life of this patent
Estimating the term…
Abstract
A diesel fuel composition including (a) a quaternary ammonium salt additive; and (b) one or more nitrogen-free detergents; wherein the quaternary ammonium salt additive includes the quaternised reaction product of a hydrocarbyl substituted succinic acid derived acylating agent and a compound able to react with said acylating agent and which includes a tertiary amine group; wherein each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties.
Claims23
A diesel fuel composition comprising (a) a quaternary ammonium salt additive;
- and (b) one or more nitrogen-free detergents;
- wherein the quaternary ammonium salt additive comprises the quaternised reaction product of a hydrocarbyl substituted succinic acid derived acylating agent and a compound able to react with said acylating agent and which includes a tertiary amine group;
- wherein each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties.
A method of improving the performance of a diesel engine, the method comprising combusting in the engine a diesel fuel composition comprising (a) a quaternary ammonium salt additive;
- and (b) one or more nitrogen-free detergents;
- wherein the quaternary ammonium salt additive comprises the quaternised reaction product of a hydrocarbyl substituted succinic acid derived acylating agent and a compound able to react with said acylating agent and which includes a tertiary amine group;
- wherein each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties.
Dependencies are inferred from the claim text.