Patent ID: 6983730

Claim:
A homogeneous charge compression ignition engine for operation with a mixture of fuel and oxygen-containing gas, the engine comprising: a combustion chamber for supply with the mixture of fuel and oxygen-containing gas; a reciprocation piston for compressing and igniting the mixture in the combustion chamber; an output shaft rotated by reciprocation of the piston; an intake valve and an exhaust valve for opening and closing the combustion chamber; a variable valve actuation mechanism for opening and closing the intake valve or the exhaust valve to perform internal exhaust gas recirculation; a heater for heating the oxygen-containing gas or mixture before the oxygen-containing gas or the mixture is supplied to the combustion chamber; a storage device for storing correspondence information of an amount of internal exhaust gas recirculation and a heated state of the oxygen-containing gas or mixture heated by the heater that are necessary to perform homogeneous charge compression ignition in relation with the load of the engine and the rotation speed of the output shaft; and a controller for controlling the variable valve actuation mechanism and the heater to achieve the amount of internal exhaust gas recirculation and the heated state of the oxygen-containing gas or mixture in correspondence with the load required for the engine and the rotation speed required for the output shaft.