Patent ID: 6253718
Filing Date: 2001-07-03
Classification: F01L,F02B,F02D,F02F

Abstract:
An engine comprising:a cylinder block having a cylinder bore;an exhaust opening at an inner wall of said cylinder bore;an exhaust port connected to said exhaust opening, said exhaust port having a first wall and a second wall;a dividing wall connecting said first wall and said second wall, so as to divide said exhaust port generally along a dividing plane;an exhaust control valve including a first valve element and a second valve element, said first valve element including a first face facing said cylinder bore and a first boss distal to said first face, said second valve element including a second face facing said cylinder bore and a second boss distal to said second face, said first face residing on one side of said dividing wall and said second face residing on another side of said dividing wall; anda valve stem connected to said first boss and said second boss to impart movement to said first boss and said second boss, a first end of said valve stem extending beyond said first boss and being supported for movement at a first location, a second end of said valve stem extending beyond said second boss and being supported for movement at a second location, wherein said first boss is connected to a first length of said valve stem, which passes through said dividing plane of said exhaust port.