Homogeneous charge compression ignition internal combustion engine that performs egr, and ignition timing control method for the engine

The EGR homogeneous charge compression ignition type internal combustion engine combustion chamber and the intake and exhaust passages communicating. The use of an intake valve of the combustion chamber and the intake passage and cut off, and using the exhaust valve and the exhaust passage blocked. In the exhaust stroke the exhaust valve closing timing with respect to the top dead center of the piston is advanced. Variable turbocharger supercharging pressure located in intake passageway. This configuration of the engine operating range extended to higher load region.