JPS5846854U

JPS5846854U - fuel supply device

Info

Publication number: JPS5846854U
Application number: JP14323381U
Authority: JP
Inventors: 三藤　憲
Original assignee: 愛三工業株式会社
Priority date: 1981-09-26
Filing date: 1981-09-26
Publication date: 1983-03-29

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]

図はこの考案による実施例を示し、第１図は燃料供給装
置の全体縦断面図、第２図はこの考案の要部の燃料通路
を含むピストンの側面図および端面図、第３図は負圧通
路の可変絞りの縦断面図である。３ａ・・・レバー、６・・・燃料開閉弁、７ａ・・田ツ
ド状弁子、８・・・燃料室、９・・・圧力室、１２ａ、
１２ｂ・・・絞り、１４・・・燃料圧カレギュレニタ、
２２・・・可変絞り、２６・・・絞り部。The figures show an embodiment according to this invention, in which Fig. 1 is an overall vertical sectional view of the fuel supply device, Fig. 2 is a side view and end view of the piston including the fuel passage, which is the main part of this invention, and Fig. 3 is a negative side view of the piston. FIG. 3 is a longitudinal cross-sectional view of a variable throttle of a pressure passage. 3a...Lever, 6...Fuel opening/closing valve, 7a...Top-shaped valve, 8...Fuel chamber, 9...Pressure chamber, 12a,
12b... Throttle, 14... Fuel pressure regulator,
22... variable aperture, 26... aperture section.

Claims

[Scope of utility model registration request]

(1) A fuel opening/closing valve consisting of an intake passage with a small venturi in the center upstream of the throttle valve, a fuel chamber and a pressure chamber separated by a diaphragm, and communicating with the discharge port opened in the small venturi. A fuel supply device for an internal combustion engine, which has a fuel punch that sends pressurized fuel to the fuel on-off valve, and a fuel pressure regulator that adjusts the pressure of the pressurized fuel and includes a regulator fuel chamber and a regulator pressure chamber separated by a diaphragm. The pressure chambers communicate with the intake passage inlet and the downstream part of the throttle valve through passages each having a throttle in the middle,
In addition, a compression spring is inserted that constantly pushes the diaphragm toward the fuel chamber, and the fuel chamber is provided with a rod-shaped valve whose base is attached to the center of the diaphragm and whose free end opens and closes the fuel outlet. A variable throttle is provided in the middle of a fuel passage that communicates with the fuel pump and is linked to a throttle valve, and the regulator fuel chamber is configured to open and close the fuel flow through a fuel adjustment port that communicates with the fuel pump and a valve attached to a diaphragm. The regulator pressure chamber has an air port that communicates with the intake passage inlet, and a compression spring that constantly pushes the diaphragm toward the regulator fuel chamber is inserted, and the regulator pressure chamber has an air port that communicates with the intake passage inlet and a compression spring that constantly pushes the diaphragm toward the regulator fuel chamber. A fuel supply device characterized in that at least one of the throttles provided in the middle of each passage communicating with the flowchart is a controllable variable throttle.

(2) The variable throttle that communicates with the throttle valve is
A fuel inlet communicating with the fuel pump is provided at the bottom, a fuel outlet communicating with the fuel on-off valve is provided at the side, and the top opening is slidable into a hollow cylindrical guide fixed to the side wall opening of the intake passage. It consists of a piston that is inserted and has one end protruding from the top of the guide and interlocks with the throttle valve, and a compression spring that is inserted inside the guide and constantly pushes the piston outward.The side of the piston that contacts the fuel outlet of the guide has a piston. 2. The fuel supply device according to claim 1, further comprising a fuel passage having an opening area proportional to the stroke of the fuel supply device.