Cooling structure of cylinder block
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshikazu Shinpo, Takashi Matsutani
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Abstract
In a cooling structure of a cylinder block, a cooling medium is supplied into the cylinder block in which a water jacket continuously extends around a bore wall, so as to uniform the bore wall temperature. The cooling structure sets a cooling characteristic of the water jacket based on at least one of variation in the bore wall temperature in a direction perpendicular to the axis of the borehole and variation in the temperature of the cooling medium flowing around the bore wall. The structure improves the cylinder bore cooling efficiency or the cooling uniformity.
Claims25
A cooling structure of a cylinder block, comprising:
- a water jacket continuously extending around a cylinder bore wall so as to convey a cooling medium, the cooling medium cooling the bore wall by flowing around the bore wall;
- and
- a mechanism that sets a cooling characteristic of the water jacket based on at least one of a variation in a temperature of a cylinder bore wall in a direction perpendicular to an axis of boreholes and a variation in a temperature of the cooling medium in the direction perpendicular to the axis of boreholes, passing around the bore wall.
A cooling structure of a cylinder block, comprising:
- a water jacket continuously extending around a cylinder bore wall so as to convey a cooling medium, the cooling medium cooling the bore wall by flowing around the bore wall;
- a spacer disposed in the water jacket;
- and
- a mechanism that changes a position of cooling around an outer wall of the bore in accordance with a state of engine load.
Dependencies are inferred from the claim text.