公开(公告)号：US20190101038A1

公开(公告)日：2019-04-04

申请号：US16083326

申请日：2017-03-15

Applicant: SCANIA CV AB

Inventor： Johan LINDERYD ,  Matthias USSNER ,  Torbjörn ELLIASSEN ,  Thomas TIMREN

IPC: F01N5/02 ,  F01N3/02 ,  F01N3/20

Abstract: The present invention relates a control system and a method for controlling exhaust flow in an exhaust line of a combustion engine comprising at least one exhaust treatment component and an evaporator of a waste heat recovery system. The control system comprises a valve arrangement in the exhaust line control unit, a temperature sensor to sense a temperature of the exhaust treatment component and a control unit configured to position the valve arrangement in a first position, when the exhaust treatment component has a lower temperature than a specific temperature of exhaust gases directed flow through to the exhaust treatment component before being directed to flow through the evaporator, and in a second position, when the exhaust treatment component has a higher temperature than said specific temperature of exhaust gases that are directed to flow through the evaporator before being directed to flow through the exhaust treatment component.

公开(公告)号：US20190153906A1

公开(公告)日：2019-05-23

申请号：US16306759

申请日：2017-05-08

Applicant: Scania CV AB

Inventor： Eric OLOFSSON ,  Andreas DAHL ,  Johan LINDERYD ,  Henrik HÖGLUND ,  Torbjörn ELIASSEN ,  Per STÅLHAMMAR ,  Jonas ASPFORS

IPC: F01L1/053 ,  F01L1/08 ,  F01L9/02 ,  F01L1/18 ,  F01L1/46 ,  F01L13/00 ,  F02D41/00

Abstract: Provided is a four stroke internal combustion engine comprising at least one cylinder arrangement, a crankshaft, a camshaft, and a turbine. The camshaft is synchronized with the crankshaft to rotate at a same rotational speed as the crankshaft. A linkage arrangement is configured to prevent the motion of the valve head every alternate rotation of the camshaft, such that the exhaust opening remains closed during a compression stroke of the piston. Also a method for controlling a four stroke internal combustion engine is disclosed.

公开(公告)号：US20180320579A1

公开(公告)日：2018-11-08

申请号：US15772441

申请日：2016-10-05

Applicant: Scania CV AB

Inventor： Eric OLOFSSON ,  Daniel NORLING ,  Michael VALLINDER ,  Jonas ASPFORS ,  Johan LINDERYD ,  Henrik HÖGLUND ,  Per-Inge LARSSON ,  Andreas DAHL ,  Martin STENBERG

IPC: F02B27/04 ,  F02B75/02 ,  F02B37/02 ,  F02C6/12 ,  F02F7/00 ,  F02F1/42

CPC classification number: F02B27/04 ,  F02B37/02 ,  F02B37/025 ,  F02B75/02 ,  F02B2075/027 ,  F02C6/12 ,  F02F1/4264 ,  F02F7/006 ,  F05D2220/40 ,  Y02T10/144 ,  Y02T10/146

Abstract: A four stroke internal combustion engine is disclosed comprising at least one cylinder arrangement, an exhaust conduit, and at least one turbine. The cylinder arrangement comprises an exhaust port arrangement configured to open and close an exhaust flow area, ACYL. The cylinder arrangement has a maximum volume, VMAX. The exhaust conduit extends between the exhaust flow area, ACYL, and a turbine wheel inlet area, ATIN, of the turbine and has an exhaust conduit volume, VEXH that is ≤0.5 times the maximum volume, VMAX. The exhaust port arrangement is configured to expose the exhaust flow area, ACYL, at a size of at least 0.22 times the maximum volume, VMAX, when a piston of the cylinder arrangement is at the bottom dead centre, BDC.