JPS6078964U

JPS6078964U - Auxiliary carburetor for starting

Info

Publication number: JPS6078964U
Application number: JP17191083U
Authority: JP
Inventors: 提橋　清和
Original assignee: 三國工業株式会社
Priority date: 1983-11-08
Filing date: 1983-11-08
Publication date: 1985-06-01

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]

図は本考案の始動用補助気化器の実施例の縦断面図であ
る。符号の説明：１・・・・・・始動用吸気通路、２・・・
・・・スタータ・プランジャ、３・・・・・・ガイド孔
、４・・・・・・燃料計量ニードル、５・・・・・・燃
料供給口、６・・・・・・エアブリードチューブ、７・
・・・・・燃料ウェル、訃・・・・・スタータージェッ
ト、９・・・・・・第１のダイアフラム、１０・１・・
・・・ばね、１２・・・・・・第２のダイアフラム、１
３・・・・・・上部筐体、１４・・・・・・下部筐体、
１８・・・・・・負圧室、２０・・・・・・サーモワッ
クス、２１・・・・・・制御棒、２２・・・・・・ＰＴ
Ｃ電気ヒータ、２３・・・・・・バイメ　　□タル負圧
切換弁、２５・・・・・・逆止弁。The figure is a longitudinal sectional view of an embodiment of the starting auxiliary carburetor of the present invention. Explanation of symbols: 1...Intake passage for starting, 2...
... Starter plunger, 3 ... Guide hole, 4 ... Fuel metering needle, 5 ... Fuel supply port, 6 ... Air bleed tube, 7.
...Fuel well, bottom...Starter jet, 9...First diaphragm, 10.1...
...Spring, 12...Second diaphragm, 1
3... Upper housing, 14... Lower housing,
18... Negative pressure chamber, 20... Thermo wax, 21... Control rod, 22... PT
C electric heater, 23... Vime □ Tal negative pressure switching valve, 25... Check valve.

Claims

[Scope of utility model registration request]

(1) A first diaphragm 9, a second diaphragm 12 having a larger effective area than the first diaphragm 9, and a thermowax 20 are sequentially arranged concentrically with the starter plunger 2, and at least start cranking the engine. Sometimes, the thermowax 20 provides a starter plunger opening that matches the ambient temperature, and when the engine temperature rises to the set temperature after the engine completes warm-up operation, the engine intake pipe negative pressure In the starting auxiliary carburetor that is introduced into the negative chamber 18 formed by the first diaphragm 9 and the second diaphragm 12 and completely closes the starter plunger 2, the negative pressure chamber 18
A temperature-sensitive switching valve is connected to connect the negative pressure chamber 18 to the atmosphere when the engine temperature is below a set temperature, and to the intake pipe when the engine temperature is above the set temperature, and a temperature-sensitive switching valve is connected between the temperature-sensitive switching valve and the intake pipe. is provided with a check valve that opens toward the intake pipe, so that even if the engine stops and the intake pipe negative pressure disappears, when the engine temperature is higher than the set temperature, the negative pressure chamber 18 remains open during engine operation. An auxiliary starting carburetor characterized by being maintained at a negative pressure in the intake pipe.

(2) A PTC electric heater that generates heat when energized after the engine completely explodes is attached to the thermowax 20 so that heat can be transferred to the starter plunger 2 during the warm-up process until the engine temperature rises to the set temperature. is controlled by the thermowax 20 to an opening degree that provides a starting air-fuel mixture with a mixture ratio and amount that matches the warm-up state of the engine.
The starting auxiliary carburetor described in item 1).

(3) The temperature-sensitive switching valve is a bimetal negative pressure switching valve 23'
The starting auxiliary carburetor according to claim (1) of the utility model registration.