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Fuel supply system

Inactive Publication Date: 2008-09-11
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]According to an aspect of the invention, there is provided a fuel supply system including: a flange mounted at an upper opening in a fuel tank; a fuel pump that discharges fuel in the fuel tank; a high-pressure filter that filters fuel discharged from the fuel pump; and a fil

Problems solved by technology

Therefore, a clearance between an opening in an upper side of a fuel tank and the housing becomes extremely small.
Consequently, when accommodating the fuel supply system within the fuel tank, an edge portion of the opening in the upper side may contact with the housing, which may result in fuel leakage from the fuel tank due to a damage made as a result of the contact.
As a result, however, a lower housing is required to cover the height dimension of the filter element, and this means that a welding portion between the lid, which prevents the leakage of fuel, and the lower housing has to lie in the vicinity of a root portion where high stress is highly possibly expected to occur.
Therefore, in case strong vibrations generated while the vehicle is being driven are applied to the welding portion, the welding portion may cracks and fuel leakage may be caused.

Method used

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Embodiment Construction

[0014]As shown in FIG. 1, a fuel supply system 101 includes: a flange 1 that is formed from an insulating resin and integrally molded to include an upper case 1a that incorporates therein an element that forms a high-pressure filter (described later); a lower case 2 made from an insulating resin to be secured to the upper case 1a through heat plate welding; a pump holder 3 engaged with the lower case through, for example, snap-fit and to hold therein a fuel pump (described later); and a suction filter 4 inserted from an opening in the pump holder 3 so as to be fitted to a suction port of the fuel pump. In addition, while reference numeral 1c denotes a connector molded integrally with the flange 1 for supplying electric power to the fuel pump, the illustration of lead wires that are provided to extend from the connector 1c are omitted. In addition, a filter case 5 is formed by the upper case 1a and the lower case 2.

[0015]An assembling procedure of this fuel supply system 101 will be ...

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Abstract

A fuel supply system includes: a flange mounted at an upper opening in a fuel tank; a fuel pump that discharges fuel in the fuel tank; a high-pressure filter that filters fuel discharged from the fuel pump; and a filter case that accommodates the high-pressure filter and includes an upper case and a lower case, the upper case integrally formed with the flange. The fuel pump is fitted to an underside of the lower case to be positioned substantially coaxial with the high-pressure filter.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2007-057516, filed on Mar. 7, 2007, the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a fusel supply system for feeding under pressure fuel within a fuel to injectors of an internal combustion engine of a vehicle, and more particularly to a structure capable of improving a mounting property to the inside of the fuel tank and an antivibration property.[0004]2. Description of the Related Art[0005]In order to capture foreign matters such as dust contained in fuel for stable supply of the fuel to, for example, injectors of a fuel injection system mounted on an engine, foreign matters contained in fuel within a fuel tank are firstly removed by a suction filter made of, for example, a nylon mesh material having relatively rough mesh...

Claims

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Application Information

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IPC IPC(8): F23K5/04F02M37/44F02M37/50
CPCB01D29/56B01D35/0273F02M37/103F02M37/22F02M2037/228F02M2037/225B01D35/0276F02M37/44F02M37/50Y10T137/85978
Inventor KANAMARU, SHIGEKIYOSHIOKA, HIROSHI
Owner MITSUBISHI ELECTRIC CORP