JPS59102970U

JPS59102970U - Engine secondary valve control device

Info

Publication number: JPS59102970U
Application number: JP20202282U
Authority: JP
Inventors: 弘大林
Original assignee: マツダ株式会社
Priority date: 1982-12-27
Filing date: 1982-12-27
Publication date: 1984-07-11

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]

第１図は本考案装置を備えた複式気化器の概略断面図、
第２図は本考案装置主要部の構造の実施例を示す断面図
、第３図は正常時とエアクリーナの目詰まり時とにおけ
るベンチュリ部の負圧とエンジン回転数との関係を示す
グラフである。２・・・１次側吸気通路、３・・・２次側吸気通路、４
・・・１次側絞弁、５・・・１次側ベンチュリ部、６・
・・２次側制御弁、７・・・２次側ベンチュリ部、１０
・・・負圧式アクチュエータ、２０・・・負圧補正装置
、２１・・・大気導入用通路、２３・・・圧力応動式制
御弁。第１図FIG. 1 is a schematic cross-sectional view of a multiple carburetor equipped with the device of the present invention;
Fig. 2 is a sectional view showing an example of the structure of the main part of the device of the present invention, and Fig. 3 is a graph showing the relationship between the negative pressure in the venturi section and the engine speed in normal conditions and when the air cleaner is clogged. . 2...Primary side intake passage, 3...Secondary side intake passage, 4
...Primary side throttle valve, 5...Primary side venturi section, 6.
...Secondary side control valve, 7...Secondary side venturi section, 10
... Negative pressure actuator, 20... Negative pressure correction device, 21... Air introduction passage, 23... Pressure responsive control valve. Figure 1

Claims

[Scope of utility model registration request]

Primary side throttle valves 2 and 2 are provided in the primary side intake passage and the secondary side intake passage.
The dual carburetor is equipped with a secondary throttle valve and a negative pressure actuator using the venturi negative pressure as an operating source to open the secondary throttle valve when the negative pressure in the venturi section is equal to or higher than a predetermined value. (In the engine of i, there is an air introduction passage that enables the introduction of air into the negative pressure supplied from the venturi section to the actuator, and an air introduction passage that is arranged in the air introduction passage and is upstream of the venturi section and downstream of the air cleaner. A pressure-responsive control valve that controls the amount of atmospheric air introduced according to the pressure inside the intake passage, and as the pressure inside the intake passage decreases, the negative pressure is corrected in the direction of decreasing the negative pressure by introducing atmospheric air. A secondary valve control device for an engine, comprising a correction device.