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US 6,854,670 B2Granted
Fuel injection valve
AssigneeKeihin Corporation
InventorsNoriaki Sumisha, Ryohei Kimura, Kazuhiko Sato, Shunsuke Inagaki, Kenichi Sato
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AssigneeKeihin Corporation
InventorsNoriaki Sumisha, Ryohei Kimura, Kazuhiko Sato, Shunsuke Inagaki, Kenichi Sato
Estimating the term…
A fuel injection valve includes a valve seat member, and an injector plate which is coupled to a front end face of the valve seat member and has a plurality of fuel injection orifices disposed about an axis of the valve seat member to communicate with a valve seat. Swirling means for swirling a fuel injected from each of the fuel injection orifices is provided in at least one of the valve seat member and the injector plate. The plurality of fuel injection orifices are disposed so that liquid membrane portions of adjoining hollow conical fuel spray forms formed by the fuel injected from the fuel injection orifices collide with one another. Thus, the atomization of the injected fuel can be further promoted, and a coalesced fuel spray form having a fuel particle density higher in a central zone and lower in an outer peripheral zone can be formed.
A fuel injection valve comprising a valve member, a valve seat member into a front end face of which a downstream end of a valve seat cooperating with said valve member opens, an injector plate coupled to the front end face of said valve seat member and having a plurality of fuel injection orifices which are disposed about an axis of said valve seat to communicate with said valve seat, and swirling means provided in at least one of said valve seat member and said injector plate for swirling a fuel injected from each of said fuel injection orifices,
A fuel injection valve comprising a valve member, a valve seat member into a front end face of which a downstream end of a valve seat cooperating with said valve member opens, and an injector plate coupled to the front end face of said valve seat member, a transverse conduit communicating with the downstream end of said valve seat, a swirling chamber into which a downstream end of said transverse conduit opens in a tangent direction, said transverse conduit and said swirling chamber being formed between said valve member, said valve seat member and said injector plate, and a fuel injection orifice provided in said injector plate for injecting a fuel swirled in said swirling chamber,
A fuel injection valve comprising a valve member, a valve seat member into a front end face of which a downstream end of a valve seat cooperating with said valve member opens, an injector plate coupled to the front end face of said valve seat member, a plurality of transverse conduits formed between said valve seat member and said injector plate to communicate with the downstream end of said valve seat and extend in a transverse direction substantially perpendicular to an axis of said valve seat, a plurality of swirling chambers which are formed between said valve seat member and said injector plate and into which downstream ends of said transverse conduits are open in tangent directions, and a plurality of fuel injection orifices provided in said injector plate for injecting a fuel swirled in said swirling chambers to the outside,
Dependencies are inferred from the claim text.