Invention Grant
- Patent Title: Valve train system for extended duration intake valve opening
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Application No.: US17449992Application Date: 2021-10-05
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Publication No.: US11698033B2Publication Date: 2023-07-11
- Inventor: Adam C. Cecil , Richard J. Gustafson
- Applicant: Cummins Inc.
- Applicant Address: US IN Columbus
- Assignee: Cummins Ins.
- Current Assignee: Cummins Ins.
- Current Assignee Address: US IN Columbus
- Agency: Taft, Stettinius & Hollister LLP
- Main IPC: F02D13/02
- IPC: F02D13/02 ; F01L1/047 ; F01L1/18 ; F01L1/24

Abstract:
A variable valve timing assembly is provided for extending a duration of an intake valve opening. The variable valve timing assembly includes an intake rocker mounted on a pedestal and operable by a cam lobe to open and close the intake valve. The intake rocker includes a lever extension, and a holding member in the pedestal is lockable in position by a hydraulic circuit in the pedestal to contact the lever extension of the intake rocker and hold the intake valve in the open position. A reset pin in the pedestal is actuatable by the cam lobe to release the holding member to allow the intake valve to close.
Public/Granted literature
- US20220025825A1 VALVE TRAIN SYSTEM FOR EXTENDED DURATION INTAKE VALVE OPENING Public/Granted day:2022-01-27
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