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US 11,125,140 B2Granted
Engine cooling structure
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYoshiki Endo
Life of this patent
Estimating the term…
Abstract
An engine cooling structure includes a head gasket sitting between a bottom surface of a cylinder head and a top surface of a cylinder block, a connection water passage for coolant that connects an in-head water jacket and an in-block water jacket to each other, and a reed valve that opens and closes in correspondence with a differential pressure of coolant in the in-head water jacket and coolant in the in-block water jacket. The reed valve includes a reed portion arranged integrally with a part of the head gasket corresponding to the connection water passage.
Claims6
An engine cooling structure comprising:
- a head gasket sitting between a bottom surface of a cylinder head and a top surface of a cylinder block;
- an in-head water jacket in the cylinder head;
- an in-block water jacket in the cylinder block;
- a connection water passage for coolant that extends through the head gasket to connect the in-head water jacket and the in-block water jacket to each other;
- and
- a reed valve that opens and closes in correspondence with a differential pressure of coolant in the in-head water jacket and coolant in the in-block water jacket,
- wherein the reed valve includes a reed portion that is configured by cutting a groove into the head gasket and arranged integrally with a part of the head gasket corresponding to the connection water passage,
- the reed portion includes a first end and a second end, the first end being a portion of the head gasket where the groove is not cut out, the second end being a portion of the head gasket enclosed by the groove, and
- the second end is arranged so as to block an opening in the bottom surface of the cylinder head in the connection water passage.
6 more elements
Dependencies are inferred from the claim text.