JPS6365860U

JPS6365860U -

Info

Publication number: JPS6365860U
Application number: JP15939986U
Authority: JP
Priority date: 1986-10-20
Filing date: 1986-10-20
Publication date: 1988-04-30
Anticipated expiration: 2001-10-20
Also published as: JP2508577Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係る内燃機関の
燃料圧力制御装置の機器系統図、第２図は第１図
の装置のプレツシヤレギユレータの断面図、第３
図は第１図の装置を用いた内燃機関の部分斜視図
、第４図は第１図の装置のＥＣＵにおける制御タ
イミングチヤート、第５図はダイヤフラム室容積
と配管容積との和と燃料圧力との関係図、第６図
は第１図の装置を部分的にかつ模式的に表わした
概略構成図、第７図は従来装置を模式的に表わし
た概略構成図、第８図は本考案の第２実施例に係
る内燃機関の燃料圧力制御装置の機器系統図、第
９図は一般的なプレツシヤレギユレータの断面図
、第１０図は従来装置における内燃機関の部分斜
視図、第１１図は従来のプレツシヤレギユレータ
の作動を説明するための第８図の装置の断面図、
である。１１……エンジン、１２……吸気管、１４……
スロツトルバルブ、１５……エアフローメータ、
１６……インジエクタ、１７……燃料タンク、１
８……燃料ポンプ、２０……デリバリパイプ、２
２……リターン通路、２３……弁部、２４……ダ
イヤフラム、２５……燃料側の室、２６……ダイ
ヤフラム室、２７……プレツシヤレギユレータ、
２８……弁開閉部、２９……スプリング、３０…
…開閉弁、３２……制御装置としてのＥＣＵ、５
０……開閉弁としての３方切換弁、５１……チエ
ツクバルブ。 1 is an equipment system diagram of a fuel pressure control device for an internal combustion engine according to a first embodiment of the present invention, FIG. 2 is a sectional view of a pressure regulator of the device in FIG. 1, and FIG.
The figure is a partial perspective view of an internal combustion engine using the device shown in FIG. 1, FIG. 4 is a control timing chart in the ECU of the device shown in FIG. 1, and FIG. FIG. 6 is a schematic configuration diagram partially and schematically representing the device in FIG. 1, FIG. 7 is a schematic configuration diagram schematically representing the conventional device, and FIG. 9 is a sectional view of a general pressure regulator, FIG. 10 is a partial perspective view of an internal combustion engine in a conventional device, and FIG. FIG. 11 is a sectional view of the device shown in FIG. 8 for explaining the operation of a conventional pressure regulator;
It is. 11...Engine, 12...Intake pipe, 14...
Throttle valve, 15... air flow meter,
16...Injector, 17...Fuel tank, 1
8...Fuel pump, 20...Delivery pipe, 2
2... Return passage, 23... Valve section, 24... Diaphragm, 25... Fuel side chamber, 26... Diaphragm chamber, 27... Pressure regulator,
28... Valve opening/closing part, 29... Spring, 30...
...Opening/closing valve, 32...ECU as a control device, 5
0...Three-way switching valve as an on-off valve, 51...Check valve.

Claims

[Scope of utility model registration request]

A fuel pressure control device for an internal combustion engine that controls the pressure of fuel fed from a fuel tank to a fuel injection means by a pressure regulator having a diaphragm chamber communicated with an intake pipe, wherein the diaphragm chamber An on-off valve that can cut off communication between the diaphragm chamber and the intake pipe and keep the diaphragm chamber in a sealed state is provided in the communication path between the diaphragm chamber and the intake pipe, and the on-off valve is equipped with an on-off valve that is capable of closing the diaphragm chamber in a sealed state when the engine is restarted at a high temperature. A fuel pressure control device for an internal combustion engine, characterized in that a control device for operating in the closing direction is connected.