JPH0285864U

JPH0285864U -

Info

Publication number: JPH0285864U
Application number: JP16618288U
Authority: JP
Priority date: 1988-12-22
Filing date: 1988-12-22
Publication date: 1990-07-06
Anticipated expiration: 2003-08-26
Also published as: JPH0533731Y2

Description

[Brief explanation of drawings]

第１図および第２図は本考案の実施例を示し、
第１図は燃料吸引ポンプを示す一部破断の正面図
、第２図は第１図中の―矢示方向から見た断
面図、第３図ないし第５図は従来技術に係り、第
３図は燃料噴射装置の全体構成図、第４図は第３
図中の燃料吸引ポンプを示す一部破断の正面図、
第５図は第４図中の―矢示方向から見た断面
図である。１６……リターン配管、１９……リターン配管
接続部、２２……噴出ノズル部、２４……吸引管
接続部、２７……吸引部、３２……弁筒部、３３
……リリーフ弁部、３４……ベーパ抜き弁部。 1 and 2 show an embodiment of the present invention,
Fig. 1 is a partially cutaway front view showing a fuel suction pump, Fig. 2 is a cross-sectional view seen from the - arrow direction in Fig. 1, and Figs. 3 to 5 relate to the prior art; The figure is an overall configuration diagram of the fuel injection system, and Figure 4 is the third
A partially cutaway front view showing the fuel suction pump in the figure.
FIG. 5 is a sectional view seen from the - arrow direction in FIG. 4. 16...Return pipe, 19...Return pipe connection part, 22...Blowout nozzle part, 24...Suction pipe connection part, 27...Suction part, 32...Valve cylinder part, 33
...Relief valve part, 34...Vapor release valve part.

Claims

[Scope of utility model registration request]

A return piping connection part that is connected to the return piping so that the return oil can flow in, a jet nozzle part that accelerates the flow rate of the return oil that has flowed into the return piping connection part and causes it to flow out, and a suction pipe that allows the suction oil to flow into it. a suction pipe connection part connected to the jet nozzle part, and a throttle flow connected to the suction pipe joint part on one side and surrounding the jet nozzle part on the other side so as to suck suction oil by return oil flowing out from the jet nozzle part. In the fuel suction pump, the fuel suction pump includes a suction portion that serves as an outlet, and a cylindrical valve cylinder portion that is provided on the peripheral wall of the return piping connection portion and communicates with the inside of the connection portion via an exhaust port; a normally closed relief valve section that opens to relieve return oil when the inside of the return piping connection reaches a predetermined internal pressure; and a valve cylinder located between the relief valve section and the discharge port. 1. A fuel suction pump comprising: a vapor release valve part which is provided in the part and releases vapor from the discharge port only when a predetermined low pressure is present, and which seats on the relief valve part and closes the valve in normal conditions.