A resonator (12) for reducing intake air noise is connected to an intake air duct (6) connecting a throttle chamber (5) and an air cleaner case (7). This blow-by gas treatment device is equipped with a fresh air introduction passage comprising a fresh air ...

In a detection of a temperature of fresh air which is supplied to an intake manifold 6 of an engine 1, by a fresh air temperature sensor 120, the invention aims at preventing precision of an engine control from dropping due to difference in an attached pos...

The engine (1) has an oil separator (4) arranged in an air intake (3) before a cylinder (2). A supercharger (9) supplies compressed charging-air to the cylinder. The oil separator is arranged downstream to an intercooler (10) that is arranged between the s...

The present invention has an object to provide an internal combustion engine in which abnormal combustion accompanying inflow of oil hardly occurs. For this purpose, in one mode of the present invention, the internal combustion engine includes a plurality ...

A fuel feed system of an engine is provided with a gas-fuel separating unit for separating oil mist generated in an engine case from air with a labyrinth, and an auto fuel cock is operated by pressure pulsation of the air from which the oil mist is separat...