公开(公告)号：US4314535A

公开(公告)日：1982-02-09

申请号：US150774

申请日：1980-05-19

申请人： Yuzu Takeuchi ,  Shigetaka Takada ,  Toshiharu Morino

发明人： Yuzu Takeuchi ,  Shigetaka Takada ,  Toshiharu Morino

IPC分类号： F02D35/00 ,  F02M7/17 ,  F02M7/24 ,  F02M7/28 ,  F02B33/00 ,  F02M7/00

CPC分类号： F02M7/24 ,  F02D35/0061 ,  F02M7/17

摘要： A feedback type variable venturi carburetor in which the negative pressure regulated by the variable venturi at a constant level is supplied to a solenoid valve which is opened and closed at a frequency of 5-30 Hz and whose open-close time ratio is controlled in accordance with the signal from exhaust gas sensor to control the vacuum pressure applied to a diaphragm chamber of an air-bleed flow control means thereby controlling the air-fuel ratio of the mixture at an optimum level. This invention obviates the use of a regulator for regulating the negative pressure from the intake manifold and precludes the drawbacks experienced with conventional carburetors, such as the slow response in the feedback control caused when the main fuel system and the idling system of the conventional carburetor are switched over, and the unstable supply of fuel when the fuel begins to be delivered from the main fuel system.

摘要翻译： 一种反馈型可变文丘里化油器，其中由可变文丘里管调节的负压恒定地供应到电磁阀，该电磁阀以5-30Hz的频率打开和关闭，并且其开闭时间比率根据 利用来自废气传感器的信号来控制施加到排气流量控制装置的隔膜室的真空压力，从而将混合物的空燃比控制在最佳水平。 本发明避免了使用调节器来调节来自进气歧管的负压，并且排除了常规化油器所遇到的缺陷，例如当主燃料系统和常规化油器的空转系统为 当燃油开始从主燃料系统输送时，燃料供应不稳定。