The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2021
Filed:
Mar. 13, 2019
Caterpillar Inc., Deerfield, IL (US);
Ashwin A. Hattiangadi, Edwards, IL (US);
Srikanth Reddy Boddapati, Krishna District, IN;
Dongyao Wang, Rochester Hills, MI (US);
Uijal Paladhi, Murshidabad, IN;
Paul David Smallidge, West Lafayette, IN (US);
John Robert Brubaker, Battle Ground, IN (US);
Abe Ingold, Metamora, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A valve seat insert for a gas exchange valve such as an intake valve controlling gas exchange of a cylinder includes an insert body having an inner peripheral surface, an outer peripheral surface, and a valve seating surface structured to contact the gas exchange valve at a closed position and profiled to limit valve recession thereof. The valve seating surface includes an arrangement of linear segments and curved segments forming wear crowns to contact the gas exchange valve at different wear states. The valve seat insert is further structured by way of the inner peripheral surface with an incoming flow crown, and a venturi extending from the incoming flow crown toward a throat of the valve seat insert. The venturi accelerates incoming gas flow.