초록 ▼

An exhaust gas cleaning device of an internal combustion engine wherein a secondary-air supply passage is connected to an exhaust system of the engine and a reed valve means is provided in the intermediate part of the secondary-air supply passage for opening in response to the pulsation pressure of

An exhaust gas cleaning device of an internal combustion engine wherein a secondary-air supply passage is connected to an exhaust system of the engine and a reed valve means is provided in the intermediate part of the secondary-air supply passage for opening in response to the pulsation pressure of the exhaust gas in the exhaust system to supply secondary air for cleaning exhaust gas to an exhaust passage and burn the unburnt components present in the exhaust passage thereby to clean exhaust gas. A desired amount of secondary air is supplied to each of a plurality of exhaust systems so that the exhaust gas cleaning efficiency as well as the reliability and durability of the reed valve means are improved and moreover a good external appearance is obtained.

대표청구항 ▼

In an internal combustion engine having a plurality of exhaust systems which are made different in length from each other and comprise a plurality of exhaust ports formed in an engine main body and separately communicated with a combustion chamber above a single cylinder and exhaust pipes communicat

In an internal combustion engine having a plurality of exhaust systems which are made different in length from each other and comprise a plurality of exhaust ports formed in an engine main body and separately communicated with a combustion chamber above a single cylinder and exhaust pipes communicated with said plural exhaust ports respectively, an exhaust gas cleaning device wherein secondary-air supply pipes are communicated with said plural exhaust systems respectively and further connected with reed valve means adapted to open and close in response to the pulsation pressures of the exhaust gas in said plurality of exhaust systems communicated with said secondary-air supply pipes.