PRE-COMBUSTION CHAMBER BOTTOM PART, PRE-COMBUSTION CHAMBER, CYLINDER DEVICE, METHOD FOR MIXING GAS AND AIR AND IGNITING GAS-AIR MIXTURE IN PRE-COMBUSTION CHAMBER, AND METHOD FOR SUBSTITUTING PRE-COMBUSTION CHAMBER

摘要

To provide a pre-combustion chamber avoiding drawbacks of the prior art, in particular a pre-combustion chamber bottom part.SOLUTION: A pre-combustion chamber bottom part 1 for a pre-combustion chamber of a cylinder of an internal combustion engine includes an ignition chamber lower part 2 with a vertical axis 3 for mixing of gas and air and igniting a gas-air mixture in the pre-combustion chamber. The pre-combustion chamber bottom part further comprises a duct 4 for connecting the ignition chamber lower part 2 with a main combustion chamber of the cylinder, which duct includes at least one duct longitudinal axis 5. An inlet opening 6 of the duct 4 to the ignition chamber lower part 2 is formed such that the vertical axis 3 has an inclination A relative to the duct longitudinal axis 5, and the inlet opening 6 is arranged eccentrically such that a tumble flow can be formed in an ignition chamber. The duct 4 comprises only one outlet opening 7, and the outlet opening 7 is arranged such that gas-air mixture beams can be formed to be asymmetrically distributed relative to the vertical axis 3. Edges 8 at the inlet opening 6 are designed as smooth edges.SELECTED DRAWING: Figure 1