Scania Cv Ab

Michael Vallinder

Andreas Dahl

Erik Höckerdal

Anders Larsson

Daniel Norling

Eric Olofsson

Niclas Gunnarsson

Per-Inge Larsson, Sr

Jonas Aspfors

Niklas Philipson

Henrik Höglund

David Raymand

Martin Stenberg

Johan Linderyd

Johan Hagberg

Henrik Skog

Disclosed is a four-stroke direct injection engine comprising a camshaft, and exhaust valve, and a control system. The control system is configured to change the timing of the camshaft to advance a closing of the exhaust valve, control a first fuel injection step during a compression stroke of the piston, control a second fuel injection step during a power stroke of the piston, and control a third fuel injection step, after the second fuel injection step, during the power stroke of the piston.

Four-stroke internal combustion engine and method of operating four-stroke internal combustion engine

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

A four-stroke internal combustion engine is disclosed comprising an exhaust valve control arrangement with an exhaust valve phase-shifting device configured to phase-shift control of the at least one exhaust valve to a state where the at least one exhaust valve is controlled in such a way that it is opened during the expansion stroke of the engine and closed during the exhaust stroke of the engine, in order to achieve engine-braking via compression in the cylinders during the exhaust stroke. An inlet valve control arrangement comprises an inlet valve phase-shifting device configured to regulate the amount of air pumped through the engine during the engine braking by regulating the phase-shift of the at least one inlet valve. The present disclosure also relates to a vehicle comprising an engine and method of controlling an engine, a computer program and a computer program for performing a method of controlling an engine.

Four-stroke internal combustion engine thereto related vehicle and method

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Stockholm, Sweden

Michael Vallinder