公开(公告)号：US20250051672A1

公开(公告)日：2025-02-13

申请号：US18718255

申请日：2022-12-14

Applicant: INNOSPEC LIMITED

Inventor： Jacqueline REID ,  Nigel John BROOM ,  Adele CROSS

IPC: C10L10/04 ,  C10L1/222 ,  C10L10/06

Abstract: A method of removing deposits in a direct injection spark ignition engine, the method including combusting in the engine a gasoline fuel composition having a quaternary ammonium salt additive 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; in which each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties.

公开(公告)号：US20250043207A1

公开(公告)日：2025-02-06

申请号：US18718271

申请日：2022-12-14

Applicant: INNOSPEC LIMITED

Inventor： Jacqueline REID ,  Adele CROSS ,  Martin ROBERTS ,  Alan ROSS

IPC: C10L10/04 ,  C10L1/232

Abstract: A method of cleaning up deposits in an indirect injection diesel engine, the method including combusting in the engine a diesel fuel composition having a quaternary ammonium salt additive; and optionally one or more further nitrogen-containing 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.

公开(公告)号：US20250043203A1

公开(公告)日：2025-02-06

申请号：US18718232

申请日：2022-12-14

Applicant: INNOSPEC LIMITED

Inventor： Jacqueline REID ,  Nigel John BROOM ,  Adele CROSS ,  Martin ROBERTS ,  Alan ROSS

IPC: C10L1/222 ,  C10L1/196 ,  C10L1/238 ,  C10L10/06

Abstract: A method of cleaning up internal diesel injector deposits in a severely fouled engine, the method including combusting in the engine a diesel fuel composition having (a) a quaternary ammonium salt additive; and (b) one or more further nitrogen-containing detergents; in which 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; in which each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties.