JPS581767U

JPS581767U - Diesel engine air bleed device

Info

Publication number: JPS581767U
Application number: JP9433581U
Authority: JP
Inventors: 正人佐藤; 浩三渡辺
Original assignee: 川崎重工業株式会社
Priority date: 1981-06-24
Filing date: 1981-06-24
Publication date: 1983-01-07
Also published as: JPS612293Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案によるエア抜装置の配管図、第２図は燃
料開閉弁の１具体化例を示す縦断面略図、第３図は第２
図の■−■断面図、第４図は燃料開閉弁の模式図であっ
て、第３、第４図の上段は−ＯＮ位置、中段はエア抜位
置、下段はＯＦＦ位置の状態をそれぞれ示している。１
・・・燃料タンク、２・：・燃料フィルタ、５・・・未
ろ過室、６・・・ろ過済室、７・・・第１燃料管（燃料
管）、８・・・燃料噴射ポンプ、１２・・・エア抜用ポ
ンプ、１５・・・主配管、１７・・・副配管、２０・・
・燃料開閉弁、２１・・・エア切換弁機構、３０・・・
逆止弁。Fig. 1 is a piping diagram of the air bleed device according to the present invention, Fig. 2 is a schematic vertical cross-sectional view showing one embodiment of the fuel on-off valve, and Fig. 3 is the piping diagram of the air bleed device according to the present invention.
The ■-■ cross-sectional view of the figure and Figure 4 are schematic diagrams of the fuel on-off valve, where the upper row of Figures 3 and 4 shows the -ON position, the middle row shows the air bleed position, and the lower row shows the OFF position. ing. 1
... Fuel tank, 2: Fuel filter, 5... Unfiltered chamber, 6... Filtered chamber, 7... First fuel pipe (fuel pipe), 8... Fuel injection pump, 12...Air bleed pump, 15...Main piping, 17...Sub-piping, 20...
・Fuel opening/closing valve, 21... Air switching valve mechanism, 30...
non-return valve.

Claims

[Scope of utility model registration request]

An air bleed pump that has a check valve effect when not in operation is installed in the engine, and the suction side of the air bleed pump is connected to the air outlet of the fuel injection pump, and the discharge side is connected to the main piping for air bleed. Connect the fuel filter to the fuel tank and place it at a lower position than the fuel tank. The fuel on-off valve that opens and closes the fuel pipe that sends fuel from the fuel tank to the fuel filter is equipped with an air switching valve mechanism, and the auxiliary piping is connected to the fuel tank through the air switching valve mechanism. 1st, 2nd
Connected to the air bleed passage, the fuel on-off valve can be freely switched between the ON position, the air bleed position, and the OFF position, and when in the ON position, the first air bleed passage communicates with the sub-piping and at the same time the fuel on-off valve itself is in the open state. When in the air bleed position, both the first and second air bleed passages communicate with the auxiliary piping, and at the same time, the fuel on-off valve itself is in the open state, so that only the flow to the fuel tank side is in the auxiliary piping system. An air bleed device for a diesel engine characterized by being equipped with a check valve that allows.