JPH0246052U

JPH0246052U -

Info

Publication number: JPH0246052U
Application number: JP12487788U
Authority: JP
Priority date: 1988-09-24
Filing date: 1988-09-24
Publication date: 1990-03-29

Description

[Brief explanation of drawings]

第１図は本考案に係る２バレル型キヤブレタの
一実施例においてエンジンの高回転、高負荷時の
態様を示す概略断面図、第２図は第１図に示した
キヤブレタの高回転、高負荷運転時以外の作動態
様を示す要部断面図、第３図は本考案に係るキヤ
ブレタの作用を示す出力特性図である。１０……キヤブレタボデー、１２……１次通路
、１４……２次通路、１６……１次ラージベンチ
ユリ、２０……１次絞り弁、２２……２次ラージ
ベンチユリ、２６……２次絞り弁、２８……吸気
マニホールド、３２……ロツド、４２……ベンチ
ユリ負圧取出口、５０……第１圧力応動アクチユ
エータ、５４……第２圧力応動アクチユエータ。 FIG. 1 is a schematic sectional view showing an embodiment of the two-barrel carburetor according to the present invention at high speeds and high loads of the engine, and FIG. 2 is a schematic cross-sectional view of the carburetor shown in FIG. 1 at high speeds and high loads. FIG. 3 is a cross-sectional view of the main part showing the operating mode other than during operation, and an output characteristic diagram showing the action of the carburetor according to the present invention. 10... Carburetor body, 12... Primary passage, 14... Secondary passage, 16... Primary large bench lily, 20... Primary throttle valve, 22... Secondary large bench lily, 26... Secondary Throttle valve, 28... Intake manifold, 32... Rod, 42... Bench lily negative pressure outlet, 50... First pressure responsive actuator, 54... Second pressure responsive actuator.

Claims

[Scope of utility model registration request]

a first pressure-responsive actuator that controls the opening degree of a secondary throttle valve provided in the secondary passage in response to the bench lily negative pressure in the primary passage and the secondary passage; A second throttle valve comprising a movable wall member such as a diaphragm to which the pressure in the intake manifold is supplied and an opening regulating member connected to the movable wall member and limiting the opening of the secondary throttle valve. When the engine is operating at a state other than high speed and high load operation, the low pressure of the intake manifold is maintained on the other side of the movable wall member of the second pressure responsive actuator. By this, the opening regulating member is held in an inoperative position where it does not limit the opening of the secondary throttle valve, and when the engine enters a high rotation and high load operating state, the opening regulating member is held on the other side. The low pressure that had been maintained is gradually released and replaced with high internal manifold pressure, so that the opening regulating member is displaced to an operating position that limits the opening of the secondary throttle valve within a delay time. A two-barrel carburetor characterized by the following structure.