Fuel injection device

Patent metadata

Field	Value
Publication number	US-10240567-B2
Application number	US-201715640838-A
Country	US
Kind code	B2
Filing date	Jul 3, 2017
Priority date	Jan 24, 2013
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A fuel injection valve includes a valve body, a coil, an inner fixed iron core that is arranged on an inner peripheral side of the coil, and an outer fixed iron core that is arranged on an outer peripheral side of the coil. The fuel injection valve also includes a movable element that is configured to be attracted to the inner fixed iron core and the outer fixed iron core, wherein the movable element is configured to be separable from the valve body and is configured to move the valve body.

First claim

The invention claimed is:

1. A fuel injection valve comprising:
a movable body;
a fixed iron core provided at a position that opposes the movable body; and
a coil, wherein
the movable body comprises a valve body and a circular section that is opposed to the fixed iron core,
the circular section has an outer periphery extending section that is opposed to the fixed iron core,
the fixed iron core comprises an inner fixed iron core that is arranged on an inner peripheral side of the coil and an outer fixed iron core that is arranged on an outer peripheral side of the coil, and
the outer periphery extending section contacts each of the inner fixed iron core and the outer fixed iron core.

2. The fuel injection valve according to claim 1 , further comprising a movable element that is configured to move the valve body,
the movable element has an intermediate surface that comes in contact with fitted with a lower surface of the circular section.

3. The fuel injection valve according to claim 1 , further comprising a movable element that is configured to move the valve body,
the movable element has a radial fuel passage that is opposed to the outer periphery extending section.

4. The fuel injection valve according to claim 1 , further comprising a movable element that is configured to move the valve body,
the movable element has an axial fuel passage that is opposed to the outer periphery extending section.

5. The fuel injection valve according to claim 1 , wherein the outer periphery extending section is opposed to the outer fixed iron core.

6. The fuel injection valve according to claim 5 , wherein the circular section is opposed to the inner fixed iron core.

Assignees

• Hitachi Automotive Systems Ltd

Inventors

• Yasukawa Yoshihito
• Ehara Hideharu
• Ishikawa Tohru
• Abe Motoyuki
• Kusakabe Ryo

Classifications

• F02M61/20

  Closing valves mechanically, e.g. arrangements of springs or weights {or permanent magnets; Damping of valve lift} · CPC title

• F02M61/04

  having valves {, e.g. having a plurality of valves in series} · CPC title

• F02M51/0657 Primary

  the body being hollow and its interior communicating with the fuel flow · CPC title

• F02M45/00

  Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship {(pumps having such delivery by means of delivery valves F02M59/462)} · CPC title

• F02D41/20

  Output circuits, e.g. for controlling currents in command coils · CPC title