Fuel injection type internal combustion engine

摘要

An internal combustion engine comprising a vertically extending intake duct which is arranged on the collecting portion of the intake manifold. A throttle valve and a fuel injector are arranged in the intake duct. A bypass passage is formed in the wall of the intake duct for communicating the inside of the intake duct located upstream of the throttle valve with the inside of the intake duct located downstream of the throttle valve.