JPH02118159U

JPH02118159U -

Info

Publication number: JPH02118159U
Application number: JP2659789U
Authority: JP
Priority date: 1989-03-10
Filing date: 1989-03-10
Publication date: 1990-09-21

Description

[Brief explanation of the drawing]

第１図は本考案に係わる汎用エンジンの燃料供
給装置の一実施例の待機時及び通常運転時を示す
縦断側面図、第２図は始動燃料増量時を示す縦断
側面図、第３図は同燃料供給装置及び従来の燃料
供給装置の始動時及び暖機運転時の空燃比特性を
示す説明図、第４図は本考案に係わる汎用エンジ
ンの燃料供給装置の他の実施例の始動燃料供給時
を示す縦断側面図、第５図は待機時及び通常運転
時を示す縦断側面図、第６図は第４図の矢印Ａ方
向から見た側面図、第７図は始動燃料供給管に設
けた燃料コツクの縦断側面図、第８図，は同
燃料コツクの作用説明図、第９図は同燃料供給装
置の概略を示す側面図、第１０図は同燃料供給装
置及び従来の燃料供給装置の始動時及び暖機運転
時の空燃比特性を示す説明図、第１１，１２図は
従来の汎用エンジンの燃料供給装置を示す縦断面
図である。１……燃料タンク、２……気化器、３……燃料
供給管、４……燃料制御用フロート、５……燃料
制御用開閉弁、６……気化器２のフロート室、７
……始動燃料供給管、８……始動燃料制御用フロ
ート、９……始動燃料制御用開閉弁。 Fig. 1 is a longitudinal side view showing an embodiment of the fuel supply system for a general-purpose engine according to the present invention during standby and normal operation, Fig. 2 is a longitudinal side view showing the case when starting fuel is increased, and Fig. 3 is the same. An explanatory diagram showing the air-fuel ratio characteristics at startup and warm-up of a fuel supply system and a conventional fuel supply system. FIG. Figure 5 is a vertical side view showing standby and normal operation, Figure 6 is a side view seen from the direction of arrow A in Figure 4, Figure 7 is a side view showing the starting fuel supply pipe. FIG. 8 is a longitudinal side view of the fuel kettle. FIG. 9 is a side view schematically showing the fuel supply device. FIG. 10 is a side view of the fuel supply device and a conventional fuel supply device. FIGS. 11 and 12, which are explanatory diagrams showing air-fuel ratio characteristics during startup and warm-up, are longitudinal sectional views showing a conventional fuel supply system for a general-purpose engine. DESCRIPTION OF SYMBOLS 1... Fuel tank, 2... Carburizer, 3... Fuel supply pipe, 4... Fuel control float, 5... Fuel control on/off valve, 6... Float chamber of carburetor 2, 7
...Starting fuel supply pipe, 8...Starting fuel control float, 9...Starting fuel control opening/closing valve.

Claims

[Scope of utility model registration request]

A fuel supply system for a general-purpose engine, in which a fuel tank and a float chamber of a carburetor are connected through a fuel supply pipe, and a fuel control on-off valve and a fuel control float are provided at an inlet of the fuel supply pipe into the float chamber,
The float chamber of the carburetor and the fuel tank side of the fuel supply pipe are communicated by a starting fuel supply pipe, and a starting fuel control opening/closing valve and a starting fuel control float are provided at the inlet of the float chamber of the starting fuel supply pipe. A fuel supply device for a general-purpose engine, characterized by the following: