Diesel engine combustion chamber, method for igniting a fuel-air mixture in a combustion chamber of a diesel engine and diesel engine

Ignition chamber as described in one of the claims above, characterized by the fact that depression (4) is created in the piston bottom surface, whereby depression (4) has the form of a cone whose tip is not oriented towards the cylinder head (1), the ignition device being positioned in the center of the plane surface of the cylinder head.

Ignition chamber as described in one of the claims above, characterized by the fact that the angle between the plane piston bottom surface and the generatrix of the cone and of the truncated cone is of 40°-50° and/or that the angle between the plane cylinder head surface and the generatrix of the cone and of the truncated cone is of 40°-50°

Ignition chamber as described in one of the claims above, characterized by the fact that the ignition device consists in a spark plug, a glow plug or a laser spark plug.

Ignition chamber as described in one of the claims above, characterized by the fact that the ignition device is adjusted to cause simultaneously the ignition of a fuel-air mixture on the entire axis of depression (4), or is adjusted so that the vertical extension of the linear ignition in relation to the ignition chamber axis is of≧10%, convenient≧20%, more convenient≧30%, even more convenient≧40%, highly convenient≧50%, more highly convenient≧60%, especially convenient≧70%, extremely convenient≧80% and particularly convenient≧90%.

Ignition chamber as described in one of the claims above, characterized by the fact that the clear height of the ignition chamber axis is situated within the depression and/or that the radius of the bottom surface of the cone can be smaller than the cylinder radius and/or that the radius of the bottom surface of the truncated cone can be smaller than the cylinder radius.

Ignition chamber as described in one of the claims above, characterized by the fact that at least one means of injection, in particular an injection nozzle, is foreseen for the injection of fuel and/or air, whereby at least one of these means of injection is disposed so that the injection direction is not identical with the ignition chamber axis, with the convenient provision that the injection direction should be at an angle of 30° to 150°, preferably of 60° to 120°, in particular 90° to the ignition chamber axis.

Procedure for the ignition of a fuel-air mixture in the ignition chamber of a combustion engine, whereby the ignition chamber presents a cylinder with a cylinder head surface and a piston with a piston bottom surface and has an ignition chamber axis (7) and a depression (3, 4) in the cylinder head surface and/or the piston bottom surface, characterized by the fact that an ignition device is positioned alongside the ignition chamber axis (7) , the ignition device being adjusted to create linear ignition alongside the ignition chamber axis (7) and linear ignition taking place alongside the ignition chamber axis, with preference for an ignition chamber as described in one of the claims above.