Patent ID: 6640771
Filing Date: 2003-11-04
Classification: F01L,F02B,F02D,Y02T

Abstract:
An internal combustion engine run on Otto fuel which may be compression ignition operated in a first operational range and spark ignition operated in a second operational range, with means for adjusting valve timing of at least one intake valve and of at least one exhaust valve, with at least one ignition equipment and at least one direct injection equipment in each cylinder, wherein there is provided at least one intake camshaft for actuating the intake valves and at least one exhaust camshaft for actuating the exhaust valves, wherein at least one intake valve in each cylinder is movable between a first and a second lift position by a device for changing the valve lift, and wherein at least one exhaust valve is actuatable by a residual gas recirculation system during an intake lift.