Patent ID: 7089912
Filing Date: 2006-08-15
Classification: F02B,F02D,Y02T

Abstract:
1. An internal combustion engine provided with at least one cylinder and comprising: a fuel supply, through which fuel is supplied to a combustion chamber; a piston in the engine cylinder whose compression action causes a mixture of air and fuel within the combustion chamber to be ignited; at least one inlet valve for admitting gas which includes fresh air into said cylinder; at least one exhaust valve for exhausting combusted gases from said cylinder; a sensor; a control unit electrically coupled to said inlet valve, said exhaust valve, said sensor, and said fuel supply to control the timing of said inlet and exhaust valves and fuel quantity supplied by said fuel supply, said control unit determining a desired combustion timing and a current combustion timing, said current combustion timing based on a signal from said sensor, said control unit further adjusting at least one of an exhaust valve closing time and an intake valve opening time such that said current combustion timing approaches said desired combustion timing wherein said exhaust closes before top dead center and said inlet valve opens after top dead center.