Evaporated-fuel treating apparatus in ganged carburetor

Abstract

Abstract PURPOSE:To supply the mixed gas having a uniform air-fuel ratio into all cylinders by purging the evaporated fuel adsorbed into an evaporated-fuel adsorbing apparatus during the operation of a car only into a front carburetor between the carburetors installed at the front and rear parts of the car. CONSTITUTION:The upper space of the float chambers 6 of the first and the second carburetors B and C installed at the front and rear part of a car is connected to an evaporated-fuel adsorbing apparatus 24 through evaporated-fuel induits 21 and 22 and a solenoid valve 23. In this case, a purging port 26 is formed onto the inner wall surface of a suction passage 2 in the vicinity on the upstream side of a throttle valve 5 at the idling position of the first carburetor B, and connected to the apparatus 24 through an evaporated-fuel purging conduit 27. Since the first carburetor B is installed at the front of the car, said carburetor can be cooled by the passage wind, and the temperature is lower than that of the second carburetor C. Therefore, though the mixed gas supplied from the first carburetor B becomes lean, this phenomenon can be compensated by feeding the evaporated fuel from the purging port 26.

Inventors

• 👤 Hiromi Naito
• 👤 内藤　広海

Bibliographic Details