| 摘要 |
A method is disclosed for reducing combustion chamber deposits in an internal combustion engine by the passage of an aqueous deadhering agent such as water to the combustion chamber at cold start conditions and permitting the engine to crank for a period of time until said deposits deadhere from the walls of the combustion chamber. The aqueous deadhering agent can be water or the same with a diluent, such as a lower alkyl ketone. This invention is applicable to combustion chamber deposits which have resulted from the use of an additive agent, such as an amine-urea type detergent additive in as low a concentration in gasoline fuel as 50 ppm.
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