Combustion Chamber for Diesel Engines with Inclined Engine Valves
AssigneeC.R.F. Societa Consortile per Azioni
InventorsGianluca CANINO, Marco CUNIBERTI, Mario DURANDO, Damiano MICELLI
Life of this patent
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Abstract
A new architecture of a combustion chamber for a diesel engine allows arranging the engine valves according to an axis inclined with respect to the cylinder axis by an angle greater than 8°, without reducing the swirl ratio obtained at the end of the compression stage.
Claims3
A diesel engine having at least one cylinder defined in a engine block, a cylinder head having a bottom surface delimiting a combustion chamber associated to said cylinder, at least two intake valves and two exhaust valves associated to said cylinder, said at least two intake valves and two exhaust valves controlling respective intake and exhaust conduits formed in said cylinder head and ending up on said bottom surface of the cylinder head delimiting the combustion chamber, wherein said surface is a mainly flat surface and orthogonal to the cylinder axis,
- said intake and exhaust valves each having a respective valve axis which is inclined with respect to the cylinder axis by an angle greater than 8°,
- said surface of the cylinder head including a flat surface portion delimiting the combustion chamber, orthogonal to the cylinder axis and spaced from the bottom surface of the cylinder head, and
- said flat surface portion being a circular surface concentric with the cylinder which is joined to the plane of the bottom surface of the cylinder head through a substantially conical annular surface portion, with a dome-like rounded or arched profile.
Dependencies are inferred from the claim text.