JPS6295175U

JPS6295175U -

Info

Publication number: JPS6295175U
Application number: JP18825585U
Authority: JP
Priority date: 1985-12-06
Filing date: 1985-12-06
Publication date: 1987-06-17

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例の縦断面図、第２
図Ａはその超音波振動子を駆動する運転域の説明
図、第２図Ｂは同じく超音波振動子の駆動制御内
容の一例を表す流れ図である。第３図は従来例の
縦断面図である。１…内燃機関の本体、８…吸気分岐管、９…吸
気分岐管の集合部、１０…同分岐通路部、１１…
スロツトルボデイ、１２…セカンダリ通路、１４
…気化空間、１５…プライマリ通路、１６…同通
路出口部、１７…ラバルノズル、１８…燃料供給
ノズル、１９…制御回路、２２…セカンダリ絞り
弁、２３…プライマリ絞り弁、２４…圧力制御弁
、２７…ダイアフラム装置、２８…同装置のロツ
ド、３１…同ダイアフラム、３２…同大気室、３
３…同負圧室、３６…同コイルスプリング、３７
…超音波振動子、３８…超音波加振器、３９…振
動子の支持柱、４１…クランク角センサ、４２…
吸気管圧力センサ。 Figure 1 is a vertical sectional view of one embodiment of this invention, Figure 2
Figure A is an explanatory diagram of the operating range in which the ultrasonic transducer is driven, and Figure 2B is a flow chart showing an example of the drive control content of the ultrasonic transducer. FIG. 3 is a longitudinal sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Main body of internal combustion engine, 8... Intake branch pipe, 9... Gathering part of intake branch pipes, 10... Same branch passage part, 11...
Throttle body, 12...Secondary passage, 14
...Vaporization space, 15...Primary passage, 16...Same passage outlet, 17...Laval nozzle, 18...Fuel supply nozzle, 19...Control circuit, 22...Secondary throttle valve, 23...Primary throttle valve, 24...Pressure control valve, 27 ...diaphragm device, 28...rod of the same device, 31...same diaphragm, 32...same atmospheric chamber, 3
3... Same negative pressure chamber, 36... Same coil spring, 37
...Ultrasonic vibrator, 38... Ultrasonic exciter, 39... Vibrator support column, 41... Crank angle sensor, 42...
Intake pipe pressure sensor.

Claims

[Scope of utility model registration request]

The intake passage that connects to the intake pipe collection part of a multi-cylinder internal combustion engine is separated into a relatively small-diameter primary passage and a relatively large-diameter secondary passage each equipped with a throttle valve, and a fuel supply nozzle is installed in the middle. The outlet of the primary passage is opened into the secondary passage, and a nozzle is formed downstream of the throttle valve of the primary passage in the vicinity of the outlet;
A fuel system in which the throttle valves in the primary and secondary passages are linked to each other so that in low load ranges, the opening ratio of the secondary side is smaller than that of the primary side, and in high load ranges, the opening ratio of the secondary side increases as well. In the supply device, an annular ultrasonic vibrator having a cross-sectional shape substantially the same as that of the outlet is supported at a position near the downstream side of the outlet of the primary passage, and a detection means for detecting the intake air amount and load of the engine. and a control means for driving the ultrasonic vibrator in a predetermined operating range in cooperation with the detection means.