Method for removing engine deposits in a reciprocating internal combustion engine

• Main Authors: AHMADI, MAJID R, VAUDRIN, DAMON C
• Format: Patent
• Language: English; French; German
• Published: 27.09.2006
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; BLASTING; CANDLES; CHEMISTRY; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; DETERGENT COMPOSITIONS; DETERGENTS; FATTY ACIDS THEREFROM; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MECHANICAL ENGINEERING; METALLURGY; NATURAL GAS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; RECOVERY OF GLYCEROL; RESIN SOAPS; SOAP OR SOAP-MAKING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF SINGLE SUBSTANCES AS DETERGENTS; WEAPONS

Disclosed are methods for removing engine deposits in a recprocating internal combustion engine by introducing a cleaning composition into an air-intake manifold of a warmed-up and idling reciprocating internal combustion engine and running the engine while the cleaning composition is being introduced. One such cleaning composition suitable for these methods comprises a first solution containing a mixture of: (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; and a second solution containing a mixture of: (d). a phenoxy mono- or poly(oxyalkylene) alcohol; (e) a cyclic carbonate; and (e) water.