DIESEL ENGINE INJECTOR NOZZLE Russian patent published in 2013 - IPC F02M61/10 

FIELD: engines and pumps.

SUBSTANCE: diesel engine injector nozzle includes a hollow housing of a sprayer with a fuel supply channel, a shutoff cone, a pre-nozzle channel and nozzle holes, a shutoff needle provided with a guide, load-carrying and shutoff parts and arranged in a hollow housing with formation of an under-needle annular cavity and an annular channel located between the load-carrying part of the needle and the hole of the sprayer housing. The under-needle cavity is interconnected with the fuel supply channel. The load-carrying part of the needle is made in the form of a flattened cone having a larger base at the shutoff part of the needle, and the hole in the sprayer housing, from the under-needle annular cavity to the shutoff cone is made in the form of a flattened cone with a smaller base at the shutoff cone of the sprayer housing.

EFFECT: invention allows intensifying the spraying process in the sprayer by increasing the fuel flow velocity in the channel before the shutoff cone.

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