To provide an injector 1, which injects and feeds fuel to an engine, capable of achieving more stable low consistent spray regardless of the lift amount of a nozzle needle 8 as a valve body.
According to the injector 1, a nozzle hole group 34 comprises two nozzle holes 6, a hole axis of the one nozzle hole 6 and a hole axis of the other nozzle hole 6 is in a relation of twisted positions, and the hole axes of both nozzle holes 6 are in the relation of twisted position to the space axis of the sack chamber 28. The eddy of fuel of the sack chamber 28 is decentered and enters the nozzle holes 6 and is accelerated in a revolving direction and is decelerated in a linear direction in the nozzle holes 6. Thereby, fuel injected from the nozzle holes 6 has a large speed in the revolving direction and has a small speed in the linear direction, thereby low consistent and wide angle spray can be formed. Further, sprays formed by the two nozzle holes 6 hardly overlap consequently the increase of a consistent force due to the overlap of the sprays is suppressed in the spray group formed by the nozzle hole group 34.
UMASAKI MASATOSHI
TAKAGI TAKENORI
IKEMOTO MARI
DENSO CORP
TOYOTA MOTOR CORP
| JPH0311152A | 1991-01-18 | |||
| JPH10169531A | 1998-06-23 | |||
| JP2008506059A | 2008-02-28 | |||
| JPH0311152A | 1991-01-18 |
Shinji Hase