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AssigneeRobert Bosch GmbH
InventorsReinhard Latsch, Hans Schlembach, Dieter Scherenberg
Estimating the term…
An internal combustion engine having an ignition chamber forming a closed circular cylinder and communicating via at least one transfer channel with a main combustion chamber with the ignition chamber cylindrical wall being controlled by means of an annular thermal pipe to a virtually constant, high temperature and protected against a rapid cooling toward cooled parts of the internal combustion engine and against overheating. An ignition device inserted into the ignition chamber, with an electrode, forms a spark gap toward the cylindrical wall of the ignition chamber in the region between the middle of the ignition chamber and the transfer channels. To improve the stability of the electrode, the electrode is provided with a heat conductor so as to provide more severely leaning of the fuel-air mixture to be ignited while avoiding glow sparking and reducing the emission of noise.
An internal combustion engine including a main combustion chamber and having an ignition chamber communicating by means of at least one transfer channel with said main combustion chamber, said ignition chamber comprising a closed end circular cylinder having a cylindrical wall which projects into said main combustion chamber and having said at least one transfer channel exiting from a lower portion of said cylinder wall substantially radially to the axis of said cylinder and tangentially to the cylindrical wall of said cylinder, said cylinder wall forming a first electrode, an ignition device projecting into said ignition chamber coaxially with said cylinder wall including a second electrode having a portion coaxial with said cylinder wall and a portion extending in a direction away from the coaxial portion toward said cylinder wall adapted to ignite toward said cylindrical wall of the ignition chamber, characterized in that said second electrode forms a spark gap with the surface of said cylinder wall in the lower half of said ignition chamber above said transfer channel in said ignition chamber cylindrical wall.
Dependencies are inferred from the claim text.