Invention Grant
- Patent Title: Valve seat insert for engine having double-crowned seating surface profiled for limiting valve recession
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Application No.: US16188577Application Date: 2018-11-13
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Publication No.: US10934899B2Publication Date: 2021-03-02
- Inventor: Ashwin Hattiangadi , Rong Qu , Sanjay Kumar , Kevin Yoder
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Deerfield
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Deerfield
- Agency: Brannon Sowers & Cracraft
- Main IPC: F01L3/04
- IPC: F01L3/04 ; F01L3/22 ; F02M21/02 ; F16K1/42 ; F16K25/00 ; F16K25/04

Abstract:
A valve seat insert for a gas exchange 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 crowns to contact the gas exchange valve at different wear states.
Public/Granted literature
- US20200149441A1 VALVE SEAT INSERT FOR ENGINE HAVING DOUBLE-CROWNED SEATING SURFACE PROFILED FOR LIMITING VALVE RECESSION Public/Granted day:2020-05-14
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