To provide a control apparatus for an internal combustion engine, which can generate exhaust pressure pulsation at an early period while suppressing the degradation of volumetric efficiency and can effectively utilize a scavenging effect while softening a ...

The method involves controlling closing of intake valve during scavenging stage which affects pressure inside chamber. During closing of intake valve, the exhaust pressure is lessened, generating a pressure difference with respect to intake pressure. The i...