Scania Cv Ab

Saab Automobile Aktiebolag

Per-Inge Larsson, Sr

Per S Gillbrand

Andreas Dahl

Daniel Norling

Eric Olofsson

Michael Vallinder

Carl Fredriksson

Jonas Aspfors

Johan Linderyd

ViChi Luu

Henrik Höglund

Martin Stenberg

Andreas Millbro

The present invention relates to a turbine arrangement driven by exhaust gases from a combustion engine. The turbine arrangement comprises a turbine housing, a turbine wheel rotatably arranged in the turbine housing, a first volute section defining a curved flow passage extending about 360&#xb0; around the periphery of the turbine wheel, and an inner radial passage directing exhaust gases radially inwardly from the flow passage into a swept area of the turbine wheel. The curved flow passage has a cross section area decreasing continuously in the flow direction of the exhaust gases from an initial area at an initial angular position of the curved flow passage to an end angular position. The flow area decreases continuously with a successively reduced value from the initial angular position to an angular position located at least 270&#xb0; from the initial angular position.

Turbine arrangement comprising a volute with continuously decreasing flow area having a successively reduced value

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, A. The cylinder arrangement has a maximum volume, V. The exhaust conduit extends between the exhaust flow area, A, and a turbine wheel inlet area, A, of the turbine and has an exhaust conduit volume, Vthat is &#x2264;0.5 times the maximum volume, V. The exhaust port arrangement is configured to expose the exhaust flow area, A, at a size of at least 0.22 times the maximum volume, V, when a piston of the cylinder arrangement is at the bottom dead centre, BDC.

Four stroke internal combustion engine

Device for supplying extra air in exhaust gases from a supercharged Otto

Growing community of inventors

Vagnhärad, Sweden

Per-Inge Larsson, Sr