- Patent Title: Systems and methods for reducing engine torque through spark retard
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Application No.: US15633979Application Date: 2017-06-27
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Publication No.: US10337485B2Publication Date: 2019-07-02
- Inventor: Adam Nathan Banker , Amey Y. Karnik , Jeffrey Allen Doering
- 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 Julia Voutyras
- Main IPC: F02P5/15
- IPC: F02P5/15 ; F02D41/00 ; F02D41/02 ; F02D41/12

Abstract:
Methods and systems are provided for reducing engine torque using spark retard. In one example, a method may include calculating a spark timing for each firing event of a plurality of firing events individually in order to achieve a desired amount of reduced torque as an average torque over the plurality of firing events. An occurrence of random misfire may be reduced by rounding the spark timing for each firing event of the plurality of firing events to a stable region or a misfire region.
Public/Granted literature
- US20180372056A1 SYSTEMS AND METHODS FOR REDUCING ENGINE TORQUE THROUGH SPARK RETARD Public/Granted day:2018-12-27
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