JPH0465954U

JPH0465954U -

Info

Publication number: JPH0465954U
Application number: JP10701790U
Authority: JP
Priority date: 1990-10-12
Filing date: 1990-10-12
Publication date: 1992-06-09

Description

[Brief explanation of drawings]

第１図ないし第４図は本考案の実施例を示し、
第１図は圧力調整部材を取付けた状態を示す外側
ハウジングの斜視図、第２図は燃料の低温時の状
態を示す圧力調整部材および外側ハウジングの要
部拡大平面図、第３図は燃料の高温時の状態を示
す第２図と同様の平面図、第４図は燃料通路内の
圧力分布を示す特性線図、第５図および第６図は
従来技術を示し、第５図はタービン型燃料ポンプ
の縦断面図、第６図は第５図中の−矢示方向
拡大断面図である。２……ケーシング本体、３……上側カバー、４
……ポンプハウジング、５……内側ハウジング、
６……外側ハウジング、１０……電動モータ、１
４……燃料通路、１５……吸込口、１６……吐出
口、１７……タービンベーン、２１……ベーパ排
出孔、２３……圧力調整部材。 1 to 4 show embodiments of the present invention,
Fig. 1 is a perspective view of the outer housing with the pressure adjustment member attached, Fig. 2 is an enlarged plan view of the main parts of the pressure adjustment member and the outer housing, showing the condition when the fuel is at low temperature, and Fig. 3 is a perspective view of the outer housing with the pressure adjustment member attached. A plan view similar to FIG. 2 showing the state at high temperature, FIG. 4 a characteristic diagram showing the pressure distribution in the fuel passage, FIGS. 5 and 6 showing the conventional technology, and FIG. 5 showing a turbine type FIG. 6 is an enlarged cross-sectional view in the direction of the - arrow in FIG. 5, which is a vertical cross-sectional view of the fuel pump. 2...Casing body, 3...Upper cover, 4
... Pump housing, 5 ... Inner housing,
6... Outer housing, 10... Electric motor, 1
4...Fuel passage, 15...Suction port, 16...Discharge port, 17...Turbine vane, 21...Vapor discharge hole, 23...Pressure adjustment member.

Claims

[Scope of utility model registration request]

A cylindrical casing body, an upper cover provided at one end of the casing body, an outer housing provided at the other end of the casing body, and having a fuel inlet and a fuel outlet formed therein. a pump housing comprising an inner housing, an electric motor located between the pump housing and an upper cover and provided within the casing body; and an electric motor located within the pump housing and configured to connect the outer housing and the inner housing a pump chamber formed between the pump chamber and having an outer peripheral side serving as a fuel passage communicating with the suction port and the discharge port; and a pump chamber disposed within the pump chamber for discharging fuel sucked into the fuel passage from the suction port from the discharge port. a turbine vane rotated by the electric motor; and a turbine vane that discharges vapor to the outside during rotation of the turbine vane.
In a turbine-type fuel pump comprising a vapor exhaust hole bored in an outer housing so as to communicate the fuel passage with the outside, the outer housing includes a vapor exhaust hole located downstream of the vapor exhaust hole in the middle of the fuel passage. A turbine-type fuel pump, characterized in that a temperature-sensitive pressure regulating member is provided that moves forward and backward within the fuel passage depending on the fuel temperature.