Connector for circulation, connection structure for connector for circulation, and fuel circulation system

A circulation system and fuel circulation technology, applied in the direction of charging systems, liquid fuel feeders, couplings, etc., can solve the problems of increased burden on fingertips and poor workability, and achieve the goal of reducing burden and improving workability Effect

Inactive Publication Date: 2008-11-12
BOSCH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the workability is deteriorated, and the burden on the fingertips may increase

Method used

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  • Connector for circulation, connection structure for connector for circulation, and fuel circulation system
  • Connector for circulation, connection structure for connector for circulation, and fuel circulation system
  • Connector for circulation, connection structure for connector for circulation, and fuel circulation system

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Embodiment Construction

[0029] Next, embodiments of the circulation connector, the connection structure of the circulation connector, and the fuel circulation system according to the present invention will be described in detail. However, this embodiment shows only one aspect of the present invention, and is not intended to limit the present invention, and can be changed arbitrarily within the scope of the present invention.

[0030] An embodiment of the present invention is a connection structure of a circulation connector, which is installed in a fuel circulation system for returning fuel from a fuel injection part to a fuel tank in an internal combustion engine equipped with a fuel injection part, and is used to connect a circulation connector ( Hereinafter, it may simply be referred to as a connector) is engaged with the fuel injection portion.

[0031] In the connection structure of the circulation connector, the fuel injection part has a connecting part for connecting the circulation connector,...

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PUM

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Abstract

Provided are a connector for circulation that can be inserted into a fuel injection section with relatively small force, a connection structure for a connector for circulation, and a fuel circulation system. The connector (30) for circulation is used for a fuel circulation system in an internal combustion engine having the fuel injection section and causes fuel to flow back from the fuel injection section to a fuel tank. The connector (30) is provided between the fuel injection section and a fuel circulation hose and is joined to the fuel injection section. The connector (30) has a second groove (32) and a tapered section (34). While being inserted in the connection section, the second groove (32) is locked together with a first groove of a connection section by a clip member (27). The tapered section (34) is reduced in diameter from the second groove in the direction of insertion. The inclination angle (theta 1), relative to the insertion direction, of that side of the tapered section which is closer to the second groove is set smaller than the inclination angle (theta 2), relative to the insertion direction, of that side of the tapered section which is farther from the second groove.

Description

technical field [0001] The present invention relates to a circulation connector, a connection structure of the circulation connector, and a fuel circulation system. In particular, it relates to a circulation connector which can be easily inserted into a fuel injection part of an internal combustion engine, a connection structure of the circulation connector, and a fuel circulation system using the circulation connector. Background technique [0002] Conventionally, the fuel injection valve used in the common rail system of the internal combustion engine introduces the high-pressure fuel fed from the common rail into the fuel injection valve, and then injects fuel into the internal combustion engine by opening and closing the injection hole at the front end by the valve body. fuel. [0003] Here, after the pressure-fed high-pressure fuel temporarily flows into the pressure control chamber of the fuel injection valve, a part of it is released to control the valve body, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L37/14F02M37/00
CPCF16L37/088F02M37/0017F16L37/0885F16L37/14F02M37/00
Inventor 田近善志雄内田明
Owner BOSCH CORP
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