公开(公告)号：US4052489A

公开(公告)日：1977-10-04

申请号：US675807

申请日：1976-04-12

Applicant: Roberto Jose Frey

Inventor： Roberto Jose Frey

IPC: F02M7/08

CPC classification number: F02M7/08

Abstract: The intake manifold of a carburetor of an internal combustion engine has between its air inlet end and its discharge end a throat portion and a butterfly valve adjacent the discharge end. First fuel injection means communicate with the interior of the manifold in the region of the throat portion for injection of fuel into the latter during normal operation of the engine, and second fuel injection means communicate with the interior of the manifold above and closely adjacent the butterfly valve for injecting additional fuel into the latter during acceleration of the engine.