公开(公告)号：US20240011428A1

公开(公告)日：2024-01-11

申请号：US18265014

申请日：2021-11-05

Applicant: Scania CV AB

Inventor： Erik HÖCKERDAL ,  Stefan ORRLING ,  Oskar LEUFVEN ,  Erik LIND ,  John KROON

IPC: F02B37/12 ,  F02D13/02

CPC classification number: F02B37/12 ,  F02D13/0203 ,  F02B2037/122 ,  F02B2037/125

Abstract: The disclosure concerns a method and a control arrangement for controlling valve actuation of an ICE comprising an exhaust valve, an intake valve, and a turbo compressor. The method comprises and the control arrangement is configured to: limiting/limit valve actuation changes of the exhaust and intake valves based on compressor data including surge limit data for the turbo compressor and one or both of a current turbo compressor rotational speed and a current turbo compressor pressure ratio, to maintain a turbo compressor mass flow above a limit mass flow value.

公开(公告)号：US20220112847A1

公开(公告)日：2022-04-14

申请号：US17492245

申请日：2021-10-01

Applicant: Scania CV AB

Inventor： Andreas DAHL ,  Erik LIND ,  Christopher RINGSTRÖM

IPC: F02D13/02 ,  F02D13/04 ,  F02D35/02

Abstract: The disclosure concerns variable valve timing of a four-stroke ICE. The ICE comprises: an exhaust valve and an intake valve an exhaust camshaft an intake camshaft and a cylinder arrangement. The cylinder arrangement comprises a combustion chamber a cylinder bore and a piston. The control arrangement is configured to: perform a first sequence of changes in the timings of the exhaust and intake camshafts in order to arrive from a first camshaft timing setting at a second camshaft timing setting based on a first current maximum cylinder pressure within the combustion chamber around top dead centre fire and/or around to dead centre gas exchange.