JPH03122266U

JPH03122266U -

Info

Publication number: JPH03122266U
Application number: JP3064190U
Authority: JP
Priority date: 1990-03-26
Filing date: 1990-03-26
Publication date: 1991-12-13

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すものであり、第
１図は吸気装置の一部切欠き全体正面図、第２図
はスロツトルボデイおよびエアクリーナの正面図
、第３図は第２図の矢視図、第４図は第２図の
矢視図、第５図は第２図の−線断面図、第
６図は第５図の−線断面図、第７図は第２図
の−線断面図、第８図は第２図の−線断
面図である。２……吸気通路、１２……燃料噴射弁、１３…
…燃料ポンプ、１４……燃料供給圧調整弁、２１
……弁室、２２……負圧室、２３……キヤツプ、
２４……ダイヤフラム、２５ａ……弁孔、２６…
…弁体、２７……ばね、２９……燃料供給通路、
３０……戻り通路、３３……通路、３６……負圧
通路、３７……ハウジング、Ｂ……通路形成体と
してのスロツトルボデイ、Ｅ……エンジン本体。 The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway overall front view of the intake system, Fig. 2 is a front view of the throttle body and air cleaner, and Fig. 3 is a view taken in the direction of the arrow in Fig. 2. Figure 4 is a view taken along the arrow in Figure 2, Figure 5 is a sectional view taken along the - line in Figure 2, Figure 6 is a sectional view taken along the - line in Figure 5, and Figure 7 is a sectional view taken along the - line in Figure 2. The sectional view, FIG. 8, is a sectional view taken along the - line in FIG. 2...Intake passage, 12...Fuel injection valve, 13...
... Fuel pump, 14 ... Fuel supply pressure regulating valve, 21
... Valve chamber, 22 ... Negative pressure chamber, 23 ... Cap,
24...Diaphragm, 25a...Valve hole, 26...
... Valve body, 27 ... Spring, 29 ... Fuel supply passage,
30... Return passage, 33... Passage, 36... Negative pressure passage, 37... Housing, B... Throttle body as a passage forming body, E... Engine body.

Claims

[Scope of utility model registration request]

A fuel injection valve 12 for injecting fuel toward the intake passage 2 is disposed in a passage forming body B having an intake passage 2 communicating with the engine body E, and the fuel injection valve 12 includes a fuel pump 13, In an engine intake system connected to a fuel supply pressure regulating valve 14 that can adjust the fuel supply pressure according to the intake pressure of the intake passage 2, the fuel supply pressure regulating valve 14 is connected to the passage forming body B.
and a cap 23 coupled to the passage forming body B.
and a passage forming body B.
and a diaphragm 24 which forms a valve chamber 21 between the cap 23 and the passage forming body B while sandwiching the peripheral edge thereof, and also forms a negative pressure chamber 22 between the cap 23 and the diaphragm 24, which faces the valve chamber 21 and forms a passage. A valve body 26 is provided in the diaphragm 24 to open and close the valve hole 25a provided in the forming body B, and the valve body 26 is housed in the negative pressure chamber 22 so as to bias the diaphragm 24 in a direction to close the valve hole 25a. The passage forming body B includes a fuel supply passage 29 that communicates the fuel pump 13 and the valve chamber 21, and a valve hole 25.
A return passage 30 communicating with a, a passage 33 connecting the fuel injection valve 12 and the valve chamber 21, and a negative pressure passage 36 connecting the intake passage 2 and the negative pressure chamber 22 are formed. Device.