公开(公告)号：US4285887A

公开(公告)日：1981-08-25

申请号：US113041

申请日：1980-01-17

Applicant: Kiyoshi Akiya

Inventor： Kiyoshi Akiya

IPC: F02M3/12 ,  F02M7/08

CPC classification number: F02M7/08 ,  F02M3/12 ,  Y10S261/39

Abstract: A carburetor herein disclosed includes a low speed spray aperture defined on the side wall of an intake duct at a position opposed to a throttle valve inside the intake duct and feeding a fuel for low speed operation in accordance with the degree of opening of the throttle valve, and a by-pass passage having, on the side wall portion of the intake duct, an intake port and a controlling stream spray port whereby the former is defined on the upstream side of the throttle valve and the latter, on the downstream side of the throttle valve. The by-pass passage incorporates therein a controlling nozzle which sprays a jet stream towards the controlling steam spray port. In accordance with an embodiment of the invention, an acceleration nozzle is additionally disposed in the by-pass passage, the nozzle opening into the by-pass passage on the upstream side of the controlling nozzle and spraying an acceleration fuel into the by-pass passage. In accordance with another embodiment of the invention, the intake duct is connected with an intake manifold having branch conduits leading to respective combustion chambers of a plurality of cylinders of an engine. The bypass passage has a plurality of controlling stream spray ports, each of which opens into each of the branch conduits.

Abstract translation: 本文公开的化油器包括限定在进气管道的侧壁上的低速喷射孔，其在与进气管道内的节流阀相对的位置处，并且根据节气门的开度供给用于低速运转的燃料 以及在进气管的侧壁部分具有进气口和控制流​​喷射口的旁路通道，由此在节流阀的上游侧和下游侧限定了前者，在下游侧 节流阀。 旁路通道内装有一个控制喷嘴，该喷嘴将喷射流喷射到控制蒸汽喷雾口。 根据本发明的实施例，加速喷嘴另外设置在旁通通道中，喷嘴开口进入控制喷嘴上游侧的旁通通道，并将加速燃料喷射到旁路通道 。 根据本发明的另一个实施例，进气管与具有分支管道的进气歧管连接，导管通向发动机的多个气缸的相应的燃烧室。 旁路通道具有多个控制流喷射口，每个控制流喷射口通向每个分支管道。