Invention Grant
- Patent Title: Methods and systems for reducing catalyst cooling during fuel cut via pre-chamber ignition system
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Application No.: US17305023Application Date: 2021-06-29
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Publication No.: US11352968B1Publication Date: 2022-06-07
- Inventor: Rani Kiwan , Chris Glugla
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: McCoy Russell LLP
- Agent Geoffrey Brumbaugh
- Main IPC: F02D41/00
- IPC: F02D41/00 ; F02B19/12 ; F02B19/10 ; F02D41/02 ; F02D41/14 ; F02D13/02 ; F02D41/40 ; F02D41/12

Abstract:
Methods and systems are provided for transferring hot, compressed gases from one cylinder to another cylinder while fuel injection in both cylinders is deactivated. In one example, a method may include during a fuel shut-off event, opening a first pre-chamber injector of the first cylinder undergoing late compression or early expansion and opening a second pre-chamber injector of the second cylinder undergoing a late expansion and/or exhaust stroke or undergoing an intake stroke to allow a hot, compressed gas from the first cylinder to transfer to the second cylinder through the first and second pre-chamber injectors.
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