Abstract: An apparatus for magnetic pre-treating of a first or second flow of fluid (11, 12) in one supply pipe (1, 1?) to a combustion chamber (6), wherein at least one magnetic field (22) is extended through said flow of fluid (11, 12) passing through said supply pipe (1, 1?), wherein said magnetic field (22) is induced by at least one electromagnet (2) each said electro magnet comprising an electrical coil (21) provided with energy from a voltage source (3); with an electrical pulse generator (4) provided with voltage from said voltage source (3) and arranged to generate electrical pulses (p) with a desire frequency (f) to said electrical coil (21).

Abstract: A turbo charger driven by exhaust gas from a combustion engine via an exhaust inlet to the turbo charger, the turbo charger having an axial inlet for combustion air generally at atmospheric pressure, from an outlet at a bent pipe portion with an inlet from an inlet channel from an air inlet, the inlet channel having at least one arched wall of non-magnetic material, with an inward facing surface and an outward facing surface relative to the inlet channel, wherein along the arched wall is arranged a series of at least three magnets having sequentially opposite magnetization directions directed mainly orthogonal to the wall, and with a pole surface of each magnet generally in level with the wall, and with a mutual separation between the magnets being at least as long as a half of a first width of the inlet channel's cross-section.