公开(公告)号：US11719172B2

公开(公告)日：2023-08-08

申请号：US17343478

申请日：2021-06-09

Applicant: VOLVO TRUCK CORPORATION

Inventor： Anders Eriksson ,  Jan Odeberg

IPC: F02D13/02 ,  F02D23/00 ,  F02D41/00 ,  F02D41/26

CPC classification number: F02D13/0249 ,  F02D23/00 ,  F02D41/0082 ,  F02D41/26

Abstract: A method performed by a control unit (11) for controlling exhaust valves (1A-6A, 1B-6B) of cylinders (1-6) in an internal combustion engine (10) is provided. The method comprise controlling (410) a number of first exhaust valves (1A-3A) for a first set of cylinders (1-3) to transfer exhaust gas to a turbine (8)) during part of an exhaust phase (Δt1) of the first set of cylinders (1-3) via a first exhaust manifold (12). Also, the method comprises controlling (420) a number of second exhaust valves (1B-3B) for the first set of cylinders (1-3) to transfer exhaust gas to an exhaust gas recirculation, EGR, conduit (9)) during part of the exhaust phase (Δt1) of the first set of cylinders (1-3) via a second exhaust manifold (7). The method further comprises controlling (430) a number of first exhaust valves (4A-6A) for a second set of cylinders (4-6) to transfer exhaust gas to the turbine (8) during part of an exhaust phase (Δt2) of the second set of cylinders (4-6) via the first exhaust manifold (12). Furthermore, the method comprises controlling (440) a number of second exhaust valves (4B-6B) for the second set of cylinders (4-6) to transfer exhaust gas to the EGR conduit (9) during a part of the exhaust phase (Δt2) of the second set of cylinders (4-6) via the second exhaust manifold (7). Here, the exhaust phase (Δt1) of the first set of cylinders (1-3) is separated in time from the exhaust phase (Δt2) of the second set of cylinders (4-6).
A control unit (11), a computer program, a carrier, an internal combustion engine and a vehicle is also provided.