Invention Grant
- Patent Title: Method and system for pre-ignition control
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Application No.: US13603238Application Date: 2012-09-04
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Publication No.: US08447502B2Publication Date: 2013-05-21
- Inventor: John Eric Rollinger , Chris Paul Glugla , Robert Roy Jentz , Robert Sarow Baskins , Karen Willard
- Applicant: John Eric Rollinger , Chris Paul Glugla , Robert Roy Jentz , Robert Sarow Baskins , Karen Willard
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Alleman Hall McCoy Russell & Tuttle LLP
- Agent Julia Voutyras
- Main IPC: F02D41/14
- IPC: F02D41/14

Abstract:
Methods and systems are provided for mitigating engine pre-ignition based on a feed-forward likelihood of pre-ignition and feedback from a pre-ignition event. In response to an indication of pre-ignition, a cylinder may be enriched while an engine load is limited. The enrichment may be followed by an enleanment to restore exhaust catalyst feed-gas oxygen levels. The mitigating steps may be adjusted based on engine operating conditions, a pre-ignition count, as well as the nature of the pre-ignition.
Public/Granted literature
- US20120330536A1 METHOD AND SYSTEM FOR PRE-IGNITION CONTROL Public/Granted day:2012-12-27
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