| 主权项 |
1. A method of exhaust aftertreatment for an internal combustion engine system, which includes an engine with at least one cylinder, each cylinder with divided exhaust gas flow between at least one blowdown exhaust valve and at least one scavenging exhaust valve, and at least one cylinder connected to an exhaust subsystem through a blowdown exhaust valve manifold and a scavenging exhaust valve manifold having the exhaust subsystem in fluid communication with a first catalyst, the exhaust subsystem in communication with the engine, the method comprising:
communicating exhaust gas from at the blowdown exhaust valve manifold and the scavenging exhaust valve manifold to the first catalyst; and varying the timing of the at least one blowdown exhaust valve. |
