Fuel injection valve for an internal combustion engine
First Claim
1. A fuel injection valve for an internal combustion engine, comprising:
- a valve body driven by driving means;
a valve seat portion having a plurality of guide portions arranged along a circumference of the valve body to slidably guide the valve body and a plurality of fuel flow passages arranged between the guide portions;
a fuel jet adjusting plate arranged downstream of the valve seat portion and attached thereto; and
a plurality of first nozzle holes arranged along a first circle on the fuel jet adjusting plate, each first nozzle hole corresponding to a respective one of the guide portions, wherein the first circle is coaxial with the circumference of the valve body.
1 Assignment
0 Petitions
Accused Products
Abstract
A valve seat portion has fuel flow passages arranged between guide portions at predetermined intervals along an outer circumference of a valve body. In addition, a fuel jet adjusting plate has nozzle holes arranged along a circle coaxial with the outer circumference of the valve body, the nozzle holes corresponding to the guide portions. Therefore, even if the valve body rotates circumferentially relative to the valve seat portion, no alteration in the pressure applied to fuel flowing through the nozzle holes occurs. By suitably setting relative locations between the respective nozzle holes and the guide portions and the numbers thereof, the pressure applied to fuel injected from the respective nozzle holes is adjusted, whereby the fuel injected from the respective nozzle holes is optimally atomized.
21 Citations
5 Claims
-
1. A fuel injection valve for an internal combustion engine, comprising:
-
a valve body driven by driving means; a valve seat portion having a plurality of guide portions arranged along a circumference of the valve body to slidably guide the valve body and a plurality of fuel flow passages arranged between the guide portions; a fuel jet adjusting plate arranged downstream of the valve seat portion and attached thereto; and a plurality of first nozzle holes arranged along a first circle on the fuel jet adjusting plate, each first nozzle hole corresponding to a respective one of the guide portions, wherein the first circle is coaxial with the circumference of the valve body. - View Dependent Claims (2, 3, 4, 5)
-
Specification