JPS6063066U

JPS6063066U - Dual fuel injection system for internal combustion engines

Info

Publication number: JPS6063066U
Application number: JP15634183U
Authority: JP
Inventors: 康夫佐藤
Original assignee: トヨタ自動車株式会社
Priority date: 1983-10-07
Filing date: 1983-10-07
Publication date: 1985-05-02

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、本考案に係る内燃機関の複燃料噴射装置を４
気筒エンジンに適用した実施例を示す一部管路図を含む
断面図、第２図は、前記実施例における燃料噴射弁の主
要部の構成を示す断面図、第３図は、第２・・図の■−
■線に沿う断面図、第４図は、本考案に係るその他の実
施例における燃料噴射弁の主要部の構成を示す断面図で
ある。１０・・・主燃料供給系、１１・・・主燃料タンク、１
２・・・主燃料ポンプ、１３・・・燃料噴射ポンプ、２
０・・・副燃料供給系、２１・・・副燃料タンク、２２
・・・副燃料ポンプ、２３・・・副燃料供給装置、３０
・・・燃料噴射弁、３１・・・噴射口、３２・・・ハウ
ジング、３２Ａ・・・ハウジング内壁面、３３・・・ニ
ードル弁、３３Ａ・・・外周面、３３Ｃ・・・ニードル
弁中心軸線、３４・・・主燃料通路、３４Ａ、３５Ａ・
・・出口部、３５・・・副燃料通路、３６・・・燃料連
通部、４０・・・複燃料噴射装置。Figure 1 shows four dual fuel injection devices for an internal combustion engine according to the present invention.
FIG. 2 is a sectional view showing the configuration of the main part of the fuel injection valve in the embodiment, FIG. ■-
FIG. 4 is a cross-sectional view showing the structure of the main part of the fuel injection valve in another embodiment of the present invention. 10... Main fuel supply system, 11... Main fuel tank, 1
2... Main fuel pump, 13... Fuel injection pump, 2
0...Auxiliary fuel supply system, 21...Auxiliary fuel tank, 22
...Auxiliary fuel pump, 23...Auxiliary fuel supply device, 30
...Fuel injection valve, 31...Injection port, 32...Housing, 32A...Housing inner wall surface, 33...Needle valve, 33A...Outer peripheral surface, 33C...Needle valve center axis , 34... Main fuel passage, 34A, 35A.
... Outlet part, 35... Sub-fuel passage, 36... Fuel communication part, 40... Dual fuel injection device.

Claims

[Scope of utility model registration request]

Main fuel supply system; Secondary fuel supply system; a housing in which an injection port for injecting fuel is formed; a needle valve that is slidably fitted and held in the housing to open and close the injection port; and the housing. a main fuel passage formed in the main fuel supply system, the inlet side of which is connected to the main fuel supply system, and the outlet side of which is communicated with the injection port when the needle valve is opened; and a dual fuel injection valve, the output side of which is provided with an auxiliary fuel passage that communicates with the injection port when the needle valve is opened; Supplying fuel of a different type from the main fuel supply system to the dual fuel injection valve from the fuel supply system,
In the dual fuel injection device for an internal combustion engine, in which different types of fuel supplied from the main fuel supply system and the auxiliary fuel supply system are injected from the injection port, fuel is injected from the injection port into the dual fuel injection valve. A fuel communication portion is formed on the upstream side in the flow direction and between the outer circumferential surface near the tip of the needle valve and the inner wall surface of the housing, and communicates the outlet portion of the main fuel passage with the outlet portion of the auxiliary fuel passage; , the mouth portions of the main fuel passage and the auxiliary fuel passage are arranged in the same perpendicular plane with respect to the center line of the needle valve, with the fuel communication portion facing therebetween and aligned. Dual fuel injection system for internal combustion engines.