Scania Cv Ab (publ)

Scania Cv Ab

Vesa Hokkanen

Kim Kylström

Peter Sperle

Lars Dahlén

Andreas Cronhjort

Jonas Holmborn

In a combustion space of a combustion engine, an inlet valve to supplies a gaseous medium which contains oxygen to the combustion space. A movable piston to compress the gaseous medium in the combustion spaces. An injector injects fuel in the combustion space in a jet which comprises a multiplicity of small fuel drops. The injector injects fuel in the combustion space at such a high initial velocity that the fuel injected in the jet mixes with the gaseous medium to form a substantially homogeneous mixture before the mixture has been decelerated to a velocity at which the fuel ignites and burns. Devices may cool the gaseous medium and the fuel before entry into the combustion space.

Arrangement and method for efficient combustion of fuel in a combustion engine

A fuel pump device includes a fuel pump in which pressure-generating components in the form of a movable piston movable through a cylinder in the fuel pump together are operable to pressurize the fuel in a chamber exposed to the components to high pressure. To prevent the clearance between the pressure-generating components from increasing with increased heating of the fuel pump and to maintain a predetermined clearance between the piston and the surrounding cylinder, a temperature-regulator maintains a temperature within a predetermined temperature range in a region of the fuel pump which includes the clearance and at least portions of the pressure-generating components.

Fuel pump device

An injector for fuel includes a passage for receiving fuel at an above-atmospheric first pressure, a pressure amplifier and an injection valve which is settable in an open position and a closed position. The injection valve includes a piston element, a closing chamber and an opening chamber. To inject fuel, the pressure amplifier generates a higher second fuel pressure in the opening chamber so that the valve element moves towards an open position and fuel is injected. To end injection of fuel, the high pressure in the opening chamber is reduced and the closing chamber is connected to the fuel source at the first pressure so that the valve is moved towards the closed position by a combined force created by the first pressure and the spring.

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Björnlunda, Sweden

Vesa Hokkanen