C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/20 (2006.01) C10L 10/00 (2006.01) C11D 3/30 (2006.01) F02B 77/04 (2006.01)
Patent
CA 2417371
Disclosed are methods for removing engine deposits in a gasoline internal combustion engine by introducing a cleaning composition into an air-intake manifold of a warmed-up and idling gasoline internal combustion engine and running the engine while the cleaning composition is being introduced. One such cleaning composition suitable for these methods comprises (a) a phenoxy mono- or poly(oxyalkylene) alcohol; (b) at least one solvent selected from (1) an alkoxy mono- or poly(oxyalkylene) alcohol and (2) an aliphatic or aromatic organic solvent; and (c) at least one nitrogen-containing detergent additive.
Divulgation de méthodes pour éliminer des dépôts formés dans des moteurs à essence à combustion interne par ajout d'une composition de nettoyage dans le collecteur d'admission d'air d'un moteur à essence à combustion interne réchauffé et tournant au ralenti et par le fonctionnement du moteur pendant que la composition est ajoutée. Une telle composition de nettoyage convenant à ces méthodes comprend : a) un phénoxy(mono ou poly(oxyalkylène))alcool, b) au moins un solvant choisi parmi 1) un alcoxy(mono ou poly(oxyalkylène))alcool, 2) un solvant organique aliphatique ou aromatique, c) au moins un additif détergent contenant un atome d'azote.
Ahmadi Majid R.
Vaudrin Damon C.
Chevron Oronite Company Llc
Sim & Mcburney
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