公开(公告)号：US20220389339A1

公开(公告)日：2022-12-08

申请号：US17762141

申请日：2020-10-20

Applicant: SHELL OIL COMPANY

Inventor： Roger Francis CRACKNELL ,  Joseph Michael RUSSO ,  Allen Ambwere ARADI ,  Andreas KOLBECK

IPC: C10L1/14 ,  F02M25/022 ,  C10L1/182 ,  C10L1/2387 ,  C10L10/14

Abstract: Method for reducing intake valve deposits in a spark ignition internal combustion engine which is fuelled with a gasoline fuel composition, wherein the method comprises introducing into the engine an aqueous based composition, wherein the aqueous based composition comprises (i) water, (ii) from 0 vol % to 40 vol % freezing point suppression agent, (iii) from 0 vol % to 10 vol % of surfactant, and (iv) an amine compound in a blending amount of from 0 ppmw to 1000 ppmw.