Fuel injection valve

A technology for fuel injection valves and valve seats, which is applied in the direction of fuel injection devices, charging systems, engine components, etc. It can solve the problems of slow flow near the side, slow flow, and inability to effectively impart fuel vortex, so as to promote micro effect
CN102444510BActive Publication Date: 2015-03-11HITACHI ASTEMO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HITACHI ASTEMO LTD
Publication Date
2015-03-11

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Abstract

PROBLEM TO BE SOLVED: To provide a fuel injection valve device capable of efficiently adding a swirl to fuel in a swirl chamber.SOLUTION: A communication path is formed such that a distance between a first side surface on the radial outside where fuel rotates in a swirl adding chamber as a side surface of the communication path and a line extended in the radial direction of a center chamber is shorter than a distance between a second side surface in the radial inside where fuel rotates in the swirl adding chamber as the side surface of the communication path and a line extended in the radial direction of the center chamber.
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Description

technical field

[0001] The present invention relates to a fuel injection valve used as a fuel injection valve for an engine. Background technique

[0002] As such a technique, the technique described in the following patent document 1 is disclosed. This publication discloses that when the valve is opened, fuel is supplied from the side hole to the swirl chamber through the lateral passage, and the fuel swirled in the swirl chamber is injected to the outside from the fuel injection hole. The transverse passage is formed so that the cross-sectional area decreases from the side hole toward the swirl chamber, and the flow velocity of the fuel increases.

[0003] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2003-336562

[0004] In the technology described in Patent Document 1, since the center of the side hole is located on the central axis of the lateral passage, when the fuel flows into the swirl chamber, the fuel collides with the side of the lateral passa...

Claims

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