Fuel injection valve
OwnerNorihisa Fukutomi, Masayuki Aota +1inventors
InventorsNORIHISA FUKUTOMI, MASAYUKI AOTA, OSAMU MATSUMOTO
Life of this patent
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Abstract
To generate the effective damping relative to the change of fuel pressure when a needle valve is closed and to decrease the generation of after-dripping right after injection (spray), a rubber ring is provided between a core and a sleeve adapted to seal the fuel.
Claims5
A fuel injection valve for opening and closing a needle valve by driving an armature by a solenoid, comprising a buffer portion, for damping the change of fuel pressure when the needle valve is closed, provided at a portion of said armature contacting the fuel, on the upstream side from an end of a nozzle opening side.
Dependencies are inferred from the claim text.