	US 12,421,469 B2
	Methods and uses relating to fuel compositions
Jacqueline Reid, Ellesmere (GB); Adele Cross, Ellesmere (GB); Martin Roberts, Ellesmere (GB); and Alan Ross, Ellesmere (GB)
Assigned to INNOSPEC LIMITED, Ellesmere (GB)
Appl. No. 18/718,271
Filed by INNOSPEC LIMITED, Ellesmere (GB)
PCT Filed Dec. 14, 2022, PCT No. PCT/GB2022/053218 § 371(c)(1), (2) Date Jun. 10, 2024, PCT Pub. No. WO2023/111552, PCT Pub. Date Jun. 22, 2023.
Claims priority of application No. 2118104 (GB), filed on Dec. 14, 2021.
Prior Publication US 2025/0043207 A1, Feb. 6, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. C10L 10/04 (2006.01); C10L 1/232 (2006.01)

CPC C10L 10/04 (2013.01) [C10L 1/232 (2013.01); C10L 2270/026 (2013.01)]

16 Claims

1. A method of cleaning up deposits in an indirect injection diesel engine, the method comprising combusting in the engine a diesel fuel composition comprising a quaternary ammonium salt additive 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.