US Patent No. 9,725,082

IMPLEMENTING SKIP FIRE WITH START/STOP FEATURE


Patent No. 9,725,082
Issue Date August 08, 2017
Title Implementing Skip Fire With Start/stop Feature
Inventorship Ihab S. Soliman, Canton, MI (US)
Mark A. Shost, Northville, MI (US)
Truc Trung Le, Rochester Hills, MI (US)
Joseph B. Adams, Northville, MI (US)
Assignee Tula Technology, Inc., San Jose, CA (US) FCA US LLC, Auburn Hills, MI (US...

Claim of US Patent No. 9,725,082

1. A method for implementing a start/stop feature in a skip fire engine control system, the skip fire engine control system
including an internal combustion engine having a plurality of working chambers, the method comprising:
implementing a stop/start feature that involves automatically turning off the engine under selected circumstances during a
drive cycle;

determining that the turned off engine should be restarted; and
during an engine startup period, operating the engine in a skip fire manner until a target engine speed is reached wherein
the skip fire operation of the engine involves firing at least one selected working cycle of at least one selected working
chamber and deactivating at least one selected working cycle of at least one selected working chamber such that air does not
pass through the at least one working chamber during the at least one deactivated working cycle.