ENERGY CONSEVING EXHAUST PASSAGE FOR AN INTERNAL COMBUSTION ENGINE

摘要

Each engine cylinder has two exhaust valves operated together by a common rocker arm through a common tappet. The exhaust passage(16) from each valve runs parallel to the valve stems and then bends at an angle to join a common exhaust passage(8). The inlet section of the common passage contains a dividing wall(54), which keeps the two streams from the two valves separate for the first part of their flow after their change of direction. The second valve stem passes through a slot in the dividing wall. The arrangement allows large gas flows with low hydraulic losses improving enine efficiency.