JPH0218646U

JPH0218646U -

Info

Publication number: JPH0218646U
Application number: JP9423288U
Authority: JP
Priority date: 1988-07-15
Filing date: 1988-07-15
Publication date: 1990-02-07

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す縦断面図、第
２図・第３図は本考案の始動燃料保留室の加圧手
段の他の実施例を示す断面図、第４図は本考案の
他の実施例を示す要部断面図である。７……感知室、９……燃料ポンプ、１６，１７
……燃料供給通路、２０……燃料弁、２５……始
動燃料保留室、２６……加圧手段、２７……リタ
ーン通路、２８……逆止弁、３０……始動ポンプ
。 FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, FIGS. 2 and 3 are sectional views showing other embodiments of the pressurizing means for the starting fuel storage chamber of the present invention, and FIG. 4 is a longitudinal sectional view showing one embodiment of the present invention. FIG. 7 is a sectional view of main parts showing another embodiment of the invention. 7... Sensing chamber, 9... Fuel pump, 16, 17
... Fuel supply passage, 20 ... Fuel valve, 25 ... Starting fuel holding chamber, 26 ... Pressurizing means, 27 ... Return passage, 28 ... Check valve, 30 ... Starting pump.

Claims

[Scope of utility model registration request]

a fuel pump operated by the pulsation of the internal combustion engine;
a diaphragm defining a sensing chamber for directing fuel from the fuel pump to a fuel nozzle at a constant pressure; and a fuel valve operable in conjunction with the diaphragm to connect and disconnect communication between the fuel pump and the sensing chamber. In the diaphragm type carburetor equipped with the above, a starting fuel holding chamber is connected in the middle of a fuel supply passage connecting the fuel valve and the fuel tank and is equipped with fuel pressurizing means in the chamber, and a starting fuel holding chamber is provided with a starting fuel holding chamber, and the fuel is sent to the starting fuel holding chamber. A starting device for a diaphragm type carburetor, which includes a starting pump that supplies fuel, and a return passage that opens a check valve to return fuel in the starting fuel storage chamber to a fuel tank when the pressure inside the starting fuel storage chamber reaches a certain level or higher.