Fuel feed apparatus of internal combustion engine
AssigneeNippondenso Co., Ltd.
InventorsYasuhide Tani, Kiyoshi Nagata, Yoshihiko Ito
Life of this patent
Estimating the term…
Abstract
A fuel feed apparatus having assist air passages that improve the fuel flow to an internal combustion engine. The fuel feed apparatus includes a fuel injection valve having a fuel injection nozzle body, and a resin cover member having both a fuel passage and an air assist passage. The cover member is press fit to the fuel injection body. The fuel feed apparatus further includes a ring member formed of metallic material and attached to an inner surface of the cover member.
Claims6
A fuel feed apparatus of an internal combustion engine, for supplying fuel to said internal combustion engine, comprising:
- a fuel injection valve including a fuel injection nozzle body shaped generally cylindrically for intermittently supplying said fuel to be injected from a bottom end of said nozzle body;
- a cover member made of a resin material and formed with a fuel passage and an assist air passage to said fuel passage, said cover member being fitted to an outer lower portion of said nozzle body so that assist air passing through said assist air passage collides with said fuel injected from said fuel injection valve;
- and
- a ring member made of metallic material and fixedly attached to said cover member, said ring member being in direct contact with an outer surface of said nozzle body and preventing positional displacement of said cover member from said nozzle body;
- wherein said cover member comprises an outer member made of resin and an inner member made of resin and receiving said ring member at an inner surface thereof, said assist air passage being formed between said outer and inner members and guiding said assist air in a downward and inward direction.
A fuel feed apparatus of an internal combustion engine, for supplying fuel to said internal combustion engine, comprising:
- fuel injection valve including a fuel injection nozzle body shaped generally cylindrically for intermittently supplying said fuel to be injected from a bottom end of said nozzle body;
- a cover member made of a resin material and formed with a fuel passage and an assist air passage to said fuel passage, said cover member being fitted to an outer lower portion of said nozzle body so that assist air passing through said assist air passage collides with said fuel injected from said fuel injection valve;
- and
- a ring member made of metallic material and fixedly attached to said cover member, said ring member being in direct contact with an outer surface of said nozzle body and preventing positional displacement of said cover member from said nozzle body, said ring member including projections that project radially with respect to said nozzle body and that are integral with said resin cover member so that rotation therebetween is prevented;
- wherein said cover member comprises an outer member made of resin and an inner member made of resin and receiving said ring member at an inner surface thereof, said assist air passage being formed between said outer and inner members and guiding said assist air in a downward and inward direction.
Dependencies are inferred from the claim text.