JPS639493U

JPS639493U -

Info

Publication number: JPS639493U
Application number: JP10215386U
Authority: JP
Priority date: 1986-07-04
Filing date: 1986-07-04
Publication date: 1988-01-22

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示すタービン型燃
料ポンプの要部断面図、第２図は同上の底面図、
第３図はタービン型燃料ポンプの従来例を示す要
部断面図、第４図は同上の―矢視図である。１２，１３……ポンプハウジング、１４……圧
力室、１６……インペラ、１７……周溝、２３…
…吸込口、２４……吐出口、２６……第１ベーパ
抜き孔、２７……第２ベーパ抜き孔、２８……第
１弁体、２９……第２弁体。 Fig. 1 is a sectional view of the main parts of a turbine-type fuel pump showing an embodiment of the present invention, Fig. 2 is a bottom view of the same as above,
FIG. 3 is a sectional view of a main part of a conventional example of a turbine-type fuel pump, and FIG. 4 is a view taken in the direction of the arrow shown above. 12, 13... Pump housing, 14... Pressure chamber, 16... Impeller, 17... Circumferential groove, 23...
...Suction port, 24...Discharge port, 26...First vapor vent hole, 27... Second vapor vent hole, 28... First valve body, 29... Second valve body.

Claims

[Scope of utility model registration request]

A pair of pump housings each having a suction port and a discharge port and forming a hollow cylindrical pressure chamber, and an impeller sandwiched between the pair of pump housings and provided in the pressure chamber and having a plurality of grooves formed on its outer periphery. and a fuel passage formed along the outer periphery of the impeller and communicating the suction port and the discharge port,
In the turbine-type fuel pump for an internal combustion engine, the impeller transports fuel from the suction port to the discharge port via a fuel passage, wherein a plurality of vapor vapors are formed at predetermined intervals along the fuel passage and pass through the pump housing. A turbine-type fuel for an internal combustion engine, comprising a vent hole and a valve device that opens the vapor vent hole on the discharge port side and closes the vapor vent hole on the suction port side as the fuel temperature rises. pump.