Surface passivation and the methods for the reduction of...

Internal-combustion engines – Miscellaneous – Fuels – lubricants and additives

Reexamination Certificate

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C123S668000, C123S670000

Reexamination Certificate

active

08069826

ABSTRACT:
In a specific embodiment of this invention, deposits and soot formation in a direct injection engine are reduced by passivating the injectors to within 0.1 mm of the injector nozzle. The fuel used with the inventive injectors comprises fuel-soluble additives.

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