# US 2014/0151468 A1 · Fuel injection valve

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- Number: US 2014/0151468 A1
- Document ID: US20140151468A1
- Status: Published application
- Kind: A1
- Application number: 14/232,725
- Filed: 2011-08-03
- Published: 2014-06-05
- Earliest claimed: 2011-08-03
- Assignees: Hitachi Automotive Systems, Ltd.
- Inventors: Yoshihito Yasukawa; Motoyuki Abe; Hideharu Ehara; Tohru Ishikawa; Eiji Ishii
- Web page: https://patentgrep.com/patent/US20140151468A1

## CPC

- F02M 51/061: {using electromagnetic operating means}
- F02M 61/162: {Means to impart a whirling motion to fuel upstream or near discharging orifices}
- F02M 61/1806: {characterised by the arrangement of discharge orifices, e.g. orientation or size}
- F02M 61/1813: {Discharge orifices having different orientations with respect to valve member direction of movement, e.g. orientations being such that fuel jets emerging from discharge orifices collide with each other}
- F02M 61/182: {Discharge orifices being situated in different transversal planes with respect to valve member direction of movement}
- F02M 61/1833: {Discharge orifices having changing cross sections, e.g. being divergent}
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

## Abstract

Fuel injection valve with conical valve seat surface that abuts a valve body to seal fuel, fuel injection orifices having an inlet opening formed on the valve seat surface, wherein fuel sprays injected from the plurality of fuel injection orifices include a first fuel spray constituted by a fuel spray injected from at least one fuel injection orifice and a second fuel spray constituted by a plurality of fuel sprays injected at an outer periphery of the first fuel spray, and a fuel injection orifice that injects the first fuel spray constituted with a plane that includes an orifice axis connecting a center of an inlet with a center of an outlet of the fuel injection orifice, parallel to a center axis of the fuel injection valve intersecting a plane, a conical apex that forms the valve seat surface to form an inclination angle that is larger than 0°.

## Claims

### Claim 1

A fuel injection valve comprising:
a conical valve seat surface that abuts a valve body to seat fuel; and
a plurality of fuel injection orifices having an inlet opening formed on the valve seat surface,
wherein fuel sprays injected from the plurality of fuel injection orifices include a first fuel spray constituted by a fuel spray injected from at least one fuel injection orifice and a second fuel spray constituted by a plurality of fuel sprays injected at an outer periphery of the first fuel spray, and
a fuel injection orifice that injects the first fuel spray is constituted such that a plane that includes an orifice axis connecting a center of an inlet with a center of an outlet of the fuel injection orifice and is parallel to a center axis of the fuel injection valve intersects a plane including a straight line passing through the center of the inlet of the fuel injection orifice and a conical apex that forms the valve seat surface as well as the center axis of the fuel injection valve to form an inclination angle that is larger than 0°.

### Claim 2 (depends on 1)

The fuel injection valve according to claim 1, wherein the second fuel spray is injected along one virtual cone surface.

### Claim 3 (depends on 2)

The fuel injection valve according to claim 2, wherein the second fuel spray is injected such that each spray injected from the fuel injection orifices is dispersed in a circumferential direction.

### Claim 4 (depends on 3)

The fuel injection valve according to claim 3, wherein the first fuel spray includes a plurality of fuel sprays that are injected from a plurality of fuel injection orifices.

### Claim 5 (depends on 4)

The fuel injection valve according to claim 4, wherein the plurality of fuel sprays that constitute the first fuel spray are injected so as to be dispersed in a circumferential direction along a virtual cone surface that is different from the one virtual cone surface.

### Claim 6 (depends on 3)

The fuel injection valve according to claim 3, wherein the center of the inlet opening of the fuel injection orifice that injects the first spray is separated without contacting a plane of symmetry that symmetrically divides the second spray in half.