US 12,258,913 B2
Method of controlling an exhaust valve arrangement
Stephen Malick, Stokesdale, NC (US)
Assigned to VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed by VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed on Oct. 30, 2023, as Appl. No. 18/497,057.
Claims priority of application No. 22204844 (EP), filed on Nov. 1, 2022.
Prior Publication US 2024/0141840 A1, May 2, 2024
Int. Cl. F02D 13/02 (2006.01); F02D 41/00 (2006.01)
CPC F02D 13/0203 (2013.01) [F02D 41/0005 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A computer-implemented method of controlling an exhaust valve arrangement of an internal combustion engine, the exhaust valve arrangement is operable to direct combusted exhaust gas out from a combustion chamber of the internal combustion engine, wherein the exhaust valve arrangement comprises a first exhaust valve and a second exhaust valve,
the method comprising:
determining, by a processor device of a computer system, a pressure level in the combustion chamber during compression release braking,
comparing, by the processor device, the pressure level with a predetermined threshold pressure; and
controlling, by the processor device, the exhaust valve arrangement to arrange the first exhaust valve to be arranged in an open position and to arrange the second exhaust valve in a closed position when the pressure level in the combustion chamber is above the predetermined threshold pressure.