Patent ID: 6293236
Filing Date: 2001-09-25
Classification: F01N,F02B,F02F

Abstract:
Mechanical breathing system for a four-stroke, fuel injected internal combustion engine, provided with multiple-valves per cylinder, in which system each cylinder breathes through the opening of all of its valves, during both the exhaust process and the intake process, comprising:at least one passage or conduit external to each engine cylinder, which provides a direct connection among an intake manifold, an exhaust manifold and valve ports of the respective cylinder, either through the engine head or outside the engine head;an air impeller to produce a forced flow of air through the system, from the intake manifold to the exhaust manifold, in order to sweep away the combustion gases and feed fresh air to the cylinders, in such a way that each cylinder in turn, at the proper time in the operating cycle, discharges the combustion gases into the system through all its valves and immediately after takes fresh air from the same system through all its valves; anda valve driving system designed to open all the valves of each cylinder, during both the exhaust process and the intake process.