JPS58161168U

JPS58161168U - Air fuel ratio control device

Info

Publication number: JPS58161168U
Application number: JP5633082U
Authority: JP
Inventors: 清水　研之
Original assignee: 三國工業株式会社
Priority date: 1982-04-20
Filing date: 1982-04-20
Publication date: 1983-10-27

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図は本考案の空燃比制御装置の一実施例を、第２図
は他の実施例を示す。１・・・気化器の主吸気通路、２・・・主燃料ノズル、
３…エマルジヨンチユーブ、４…メーンエアジエツト、
５・・・メーンジェット、６・・・浮子室、７・・・扁
２パイロットエアジェツト、８・・・ベンチュリニアリ
ーク、９・・・、４６１パイロツトエアジエツト、１０
・・・パイロットジェット、１１・・・バイパス、１２
・・・パイロットアウトレット、１３・・・パイロット
スクリュー、１４・・・絞り弁、１５・・・燃料タンク
、１６・・・燃料ポンプ、１７・・・レギュレータ、１
９・・・インジェクタ、２０・・・ＩＳＣ，２１・・・
制御回路、２３・・・絞り弁開度信号入力、２４．　２
５．　２６・・・それぞれエンジン温度、吸入負圧、回
転速度信号入力、２７・・・始動モータオン・オフ信号
入力、２８・・・アイドルアップ要求信号入力、２９・
・・排気ガス酸素濃度信号入力、３０・・・補助吸気通
路、３１・・・空気絞り弁手段、３２・・・インジェク
タ。FIG. 1 shows one embodiment of the air-fuel ratio control device of the present invention, and FIG. 2 shows another embodiment. 1... Main intake passage of the carburetor, 2... Main fuel nozzle,
3... Emulsion tube, 4... Main air jet,
5...Main jet, 6...Float chamber, 7...Flat 2 pilot air jet, 8...Venturi linear leak, 9..., 461 pilot air jet, 10
... Pilot jet, 11 ... Bypass, 12
... Pilot outlet, 13 ... Pilot screw, 14 ... Throttle valve, 15 ... Fuel tank, 16 ... Fuel pump, 17 ... Regulator, 1
9...Injector, 20...ISC, 21...
Control circuit, 23... Throttle valve opening signal input, 24. 2
5. 26...Engine temperature, suction negative pressure, rotation speed signal input, 27...Starting motor on/off signal input, 28...Idle up request signal input, 29.
...Exhaust gas oxygen concentration signal input, 30...Auxiliary intake passage, 31...Air throttle valve means, 32...Injector.

Claims

[Scope of utility model registration request]

(1) The carburetor is equipped with a float system, a slow system, and a main system, and has the ability to control the fuel flow rate during normal operation.The on signal of the engine start switch, engine temperature, rotation speed, and intake pressure are controlled by the carburetor throttle valve. The injector is operated by a control circuit based on a microprocessor unit that inputs and calculates engine operating parameters such as opening degree and exhaust gas oxygen concentration signal and outputs signals for starting fuel increase, low temperature increase, acceleration increase, and full throttle increase. Air-fuel ratio control device.

(2) The air-fuel ratio control device according to claim 1, wherein the injector is one, and the control circuit outputs each increase signal to the one injector.

(3) The above-mentioned injector is plural, and the above-mentioned control circuit provides an output signal for each of the above-mentioned increase elements to each injector, respectively.
1) The air-fuel ratio control device described in item 1).

(4) The air-fuel ratio control device according to claim (1), wherein the number of injectors is plural, and at least one injector is operated by control signals of a plurality of increase elements.

(5) the injector is located in the main intake passage of the carburetor;
The air-fuel ratio control device according to claims (1) to (5) of the above-mentioned utility model registration, which is disposed downstream of the throttle valve.

(6) A venturi and a throttle are bypassed in the carburetor, and an auxiliary intake passage equipped with an air flow control means is provided, and the auxiliary intake passage downstream of the flow control means and the main intake passage of the carburetor are throttled. The scope of the above utility model registration claim No. 1 (
Air-fuel ratio control described in item 1).