EXHAUST GAS PURIFIER OF AN INTERNAL COMBUSTION ENGINE

摘要

AN EXHAUST GAS PURIFIER OF AN INTERNAL COMBUSTION ENGINE An exhaust gas purifier of a four-stroke internal combustion engine has a plurality of cylinders consisting of cylinder groups, each of which has at least two cylinders, and the opening durations of the exhaust valves in any one group do not overlap. The exhaust passages of the cylinders of one of the cylinder groups are connected to the atmosphere via a common reed valve.