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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
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.
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公开(公告)号：US20200049047A1
公开(公告)日：2020-02-13
申请号：US16495621
申请日：2018-03-23
Applicant: Scania CV AB
Inventor： Henrik BIRGERSSON , Stefan ORRLING , David TEMPELMANN
Abstract: A method and a system for control of a dosage device and/or an engine that produces an exhaust stream (203) treated by an exhaust treatment system (250) that injects at least one additive into the exhaust stream (203) with a dosage device (271) to evaporate in an evaporation chamber (280). The method includes determining a time dependent condition of a position at an internal wall (281) of the evaporation chamber (280), the condition being determined based on the internal temperature related to the position, the internal temperature being determined based on a temperature model for the evaporation chamber (280) and an exhaust temperature for the exhaust stream (203) upstream of the evaporation chamber (208); determining a risk for at least one spatially resolved critical condition related to the position based on the time dependent condition, and controlling the dosage device (271) and/or the engine based on the determined risk.
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