公开(公告)号：US11499106B2

公开(公告)日：2022-11-15

申请号：US17293721

申请日：2019-11-22

Applicant: SHELL OIL COMPANY

Inventor： Alastair Graham Smith ,  Claire Griffiths ,  Mark Clift Southby ,  Tushar Bera

IPC: C10L1/238 ,  C10L1/236

Abstract: A fuel composition comprising a base fuel and at least one viscosity index (VI) improving additive, wherein the viscosity index (VI) improving additive is a functionalized dispersant olefin copolymer. The viscosity index (VI) improving additive provides improved power output and/or acceleration characteristics.

公开(公告)号：US11578283B2

公开(公告)日：2023-02-14

申请号：US17414618

申请日：2020-01-27

Applicant: SHELL OIL COMPANY

Inventor： Alastair Graham Smith

IPC: C10L1/16

Abstract: Use of a viscosity increasing component in a diesel fuel composition, for the purpose of improving the fuel economy of an engine into which the fuel composition is or is intended to be introduced, or of a vehicle powered by such an engine, wherein the viscosity increasing component is a viscosity index (VI) improving additive, wherein the VI improving additive comprises a linear block copolymer, which contains one or more monomer blocks selected from ethylene, propylene, butylene, butadiene, isoprene and styrene monomers and wherein the VI improving additive is used at a concentration of from 0.001% w/w to 0.05% w/w.