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Fuel pump

A fuel pump and fuel technology, which is applied in the pump, liquid fuel feeder, cross-flow pump, etc., can solve the problems of complex structure of the fuel supply device, large-scale fuel supply device, and large-scale fuel pump, etc. Number, effect of reliable fuel supply

Inactive Publication Date: 2008-07-02
MITSUBA CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the pipe leading to the engine side becomes longer, and the pressure loss becomes larger. In order to obtain a predetermined output, there is a problem that not only the output of the fuel pump must be enlarged, but also the structure of the fuel supply device is complicated, and the The problem of increasing the size of the fuel supply device

Method used

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Embodiment Construction

[0046] Next, embodiments of the present invention will be described with reference to the drawings.

[0047] In the drawings, 1 is a fuel pump constituting a fuel supply device. This fuel pump 1 is composed of a pump unit P and a motor unit M. The motor unit M is located below the bottom side 2a of the fuel tank 2, and the pump unit P is located above. The motor part M and the pump part P are equipped with a cylindrical yoke 3 constituting the housing of the present invention, and an upper stepped portion 3a is formed on the tube end surface of the upper end of the yoke 3, and the ring constituting the upper end of the housing The outer peripheral edge portion of the upper bracket 4 in the shape of the upper side is converged on the upper side stepped portion 3a.

[0048] 5 is an armature constituting the motor part M, and the upper end of an armature shaft (motor shaft) 5a constituting the armature 5 is rotatably supported in a bearing part 4a recessed in the shaft center po...

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Abstract

A fuel pump enabling a reduction in the size of a fuel feeder and an increase in the durability thereof. The fuel pump (1) comprises a pump part (P) disposed on the lower part of a cylindrical yoke (3) and a brush type motor part (M) disposed on the upper part of the yoke (3) and driving the pump part (P). A pump bracket (10) covering the pump part (P) side end part of the yoke (3) comprises a fuel suction part (10c) sucking a fuel into the pump part (P) and a fuel discharge part (10d) discharging the fuel to the outside of the pump part (P). An upper side bracket (4) forming the motor part (M) comprises a pressure regulating device (17).

Description

technical field [0001] The present invention belongs to the technical field of fuel pumps mounted on vehicles such as motorcycles. Background technique [0002] Generally, among the fuel pumps constituting this type of vehicle fuel supply device, there is an in-tank type fuel pump in which the fuel pump is arranged on the bottom of the fuel tank and driven while the fuel pump is immersed in the fuel. Pump. In this case, the fuel pump is configured by arranging the pump unit below the cylindrical case and disposing the motor unit that drives the pump unit above the case, so that even if the fuel in the fuel tank becomes low, it can stably Carry out fuel supply. [0003] An electric motor is employed as a motor portion for a fuel pump, which has a commutator provided on a motor shaft, supplies external power to brushes that are in sliding contact with the commutator, thereby rotating the motor shaft, and in such a motor portion , the fuel discharge portion is provided on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/10F02M37/08F02M37/20F04D5/00
CPCF02M37/103F04D5/002
Inventor 鵤木孝夫叶山惠三堀底伸一郎成岛雅彦
Owner MITSUBA CORP
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