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1. 发明专利

JPS58176459A CARBURETOR 失效
公开(公告)号：JPS58176459A
公开(公告)日：1983-10-15
申请号：JP6064882
申请日：1982-04-12
申请人： NIPPON CARBURETER
发明人： FUJITA KAZUHITO , NISOU TERUYUKI
IPC分类号： F02M7/23 , F02M7/10
摘要： PURPOSE:To enable to prevent air-fuel mixture from becoming lean at the medium and high speed operational range of an engine, by opening a bleed air intake port at a position near a venturi on the upstream or downstream sides of the same. CONSTITUTION:An intake pipe 11 having an intake port 10 opened in an intake passage 1 is connected to a lead jet 8 at a position near a venturi 2 on the upstream side of the same, and a side portion if the intake passage 1 and the pipe 11 are communicated with each other via a small-diameter jet 12. With such an arrangement, air bubbles are produced in an emulsion pipe 9 at the time of low- speed operation of an engine since the velocity of air flow in the intake passage 1, so that atomization of fuel supplied from a main nozzle 6 is promoted. Further, since the velocity of air flow at the intake port 10 is increased as the engine speed is increased from low, medium to high, air bleeding effect is reduced and the air-fuel mixture becomes rich, so that almost no air bleeding is caused. Therefore, it is enabled to keep the air-fuel ratio at a required value and to prevent increasing of the specific fuel consumption and deterioration of exhaust gas without adversely affecting the driving performance of the engine.

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