# US 2021/0277319 A1 · Liquid fuel compositions

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2021/0277319 A1
- Document ID: US20210277319A1
- Status: Published application
- Kind: A1
- Application number: 17/256,491
- Filed: 2019-07-01
- Published: 2021-09-09
- Earliest claimed: 2018-07-02
- Assignees: Shell USA, Inc.
- Applicants: Shell Oil Company
- Inventors: Mark Clift SOUTHBY; Renate UITZ-CHOI; Roger Francis CRACKNELL; Joseph Michael RUSSO; Neal Matthew MORGAN; Artemis KONTOU
- Web page: https://patentgrep.com/patent/US20210277319A1

## CPC

- C10L 1/238: obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds {(C10L1/221 takes precedence)}
- C10L 10/08: for improving lubricity; for reducing wear
- C10M 137/10: Thio derivatives
- C10M 149/02: Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M 161/00: Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
- C10M 169/044: {the additives being a mixture of non-macromolecular and macromolecular compounds}
- C10L 2200/0423: Gasoline
- C10L 2200/0446: Diesel
- C10L 2270/023: for gasoline engines
- C10L 2270/026: for diesel engines, e.g. automobiles, stationary, marine
- C10M 2203/003: used as base material
- C10M 2217/06: Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
- C10M 2223/045: Metal containing thio derivatives
- C10N 2020/04: Molecular weight; Molecular weight distribution
- C10N 2030/04: Detergent property or dispersant property
- C10N 2030/041: {Soot induced viscosity control}
- C10N 2030/06: Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
- C10N 2040/25: Internal-combustion engines
- C10N 2040/252: {Diesel engines}
- C10N 2040/255: {Gasoline engines}
- C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

Use of a liquid fuel composition in an internal combustion engine, the internal combustion engine containing a lubricating composition for lubricating said internal combustion engine, wherein the liquid fuel composition comprises at least one nitrogen-containing detergent additive, for the purpose of reducing engine wear caused by the presence of soot in the lubricating composition.

## Claims

### Claim 1

Use of a liquid fuel composition in an internal combustion engine, the internal combustion engine containing a lubricating composition for lubricating said internal combustion engine, wherein the liquid fuel composition comprises at least one nitrogen-containing detergent additive, for the purpose of reducing engine wear caused by the presence of soot in the lubricating composition.

### Claim 2 (depends on 1)

Use according to claim 1 wherein the lubricating composition comprises at least one zinc-containing anti-wear additive.

### Claim 3 (depends on 1)

Use according to claim 1 wherein the nitrogen-containing detergent additive is selected from compounds having at least one hydrophobic hydrocarbon radical having a number-average molecular weight (Mn) of from 85 to 20000 and at least one polar moiety selected from:
(A1) mono- or polyamino groups having up to 6 nitrogen atoms, of which at least one nitrogen atom has basic properties;
(A2) polyoxy-C2-to-C4-alkylene groups which are terminated mono- or polyamino groups, in which at least one nitrogen atom has basic properties, or by carbamate groups;
(A3) moieties derived from succinic anhydride and having amido and/or imido groups; and/or
(A4) moieties obtained by Mannich reaction of substituted phenols with aldehydes and mono- or polyamines.
and mixtures of the compounds defined above.

### Claim 4 (depends on 3)

Use according to claim 3 wherein the polar moiety is selected from (A3) moieties derived from succinic anhydride and having amido and/or imido groups.

### Claim 5 (depends on 1)

Use according to claim 1 wherein the nitrogen-containing detergent additive is a polyalkene succinimide.

### Claim 6 (depends on 1)

Use according to claim 1 wherein the nitrogen-containing detergent additive is a polyisobutylene succinimide.

### Claim 7 (depends on 1)

Use according to claim 1 wherein the nitrogen-containing detergent additive is present in the fuel composition at a level of from 0.001 wt % to 0.1 wt %, by weight of the fuel composition.

### Claim 8 (depends on 1)

Use according to claim 1 wherein the internal combustion engine is a direct injection gasoline engine.

### Claim 9 (depends on 1)

Use according to claim 1 wherein the internal combustion engine is a diesel engine.

### Claim 10 (depends on 1)

Use according to claim 1 wherein the fuel composition is a gasoline fuel composition.

### Claim 11 (depends on 1)

Use according to claim 1 wherein the fuel composition is a diesel fuel composition.