| 主权项 |
1. An internal combustion engine comprising:
a variable valve mechanism; a spark plug; and a control device, the control device controls a first control amount of the variable valve mechanism and a second control amount of the spark plug, the first control amount and the second control amount in a homogeneous lean operation region are different from the first control amount and the second control amount in a non-lean operation region, the homogeneous lean operation region is set in a first load region, the non-lean operation region is a stoichiometric or rich operation region set in a second load region, the second load region is higher than the first load region, the control device performs control, in other operation region set in a third load region, so that an air-fuel ratio of the internal combustion engine is equal to an air-fuel ratio of non-lean operation region, the first control amount of the variable valve mechanism is equal to a control amount of the homogeneous lean operation region and the second control amount of the spark plug is equal to a control amount of the non-lean operation region in accordance with an operation amount of an accelerator pedal, the third load region is determined between the first load region and the second load region. |
