Back to results
US 11,643,990 B2Granted
Methods of forming a thermally isolated exhaust port
AssigneeDeere & Company
InventorJeremy M. Kessens
Life of this patent
Estimating the term…
Abstract
A method of forming a thermally isolated exhaust port, the method comprising applying an endothermic material to an exhaust port core in a mold for an engine cylinder head, forming the engine cylinder head with an exhaust port using a casting process, generating, in the cylinder head with the exhaust port during the casting process, nodular graphite iron proximate the endothermic material around the exhaust port core, and forming the thermally isolated exhaust port containing nodular graphite iron in the cylinder head.
Claims3
A method of forming a thermally isolated exhaust port, the method comprising:
- applying an endothermic material to an exhaust port core in a mold for an engine cylinder head;
- forming the engine cylinder head with an exhaust port using a casting process;
- generating, in the cylinder head with the exhaust port during the casting process, nodular graphite iron proximate the endothermic material around the exhaust port core;
- and
- forming the thermally isolated exhaust port containing nodular graphite iron in the cylinder head.
2 more elements
Dependencies are inferred from the claim text.