US 11,840,996 B2
Variable energy ignition systems, methods, and apparatuses
J. Steven Kolhouse, Columbus, IN (US); Daniel J. O'Connor, Columbus, IN (US); and Philipe F. Saad, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Dec. 23, 2022, as Appl. No. 18/088,156.
Application 18/088,156 is a continuation of application No. 17/530,596, filed on Nov. 19, 2021, granted, now 11,536,239.
Application 17/530,596 is a continuation of application No. PCT/US2019/033214, filed on May 21, 2019.
Prior Publication US 2023/0129719 A1, Apr. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F02P 5/15 (2006.01); F02D 19/02 (2006.01); F02D 19/08 (2006.01); F02P 3/045 (2006.01); F02P 3/05 (2006.01); F02P 5/152 (2006.01); F02P 15/08 (2006.01); F02P 15/10 (2006.01)
CPC F02P 5/151 (2013.01) [F02D 19/029 (2013.01); F02D 19/084 (2013.01); F02D 19/087 (2013.01); F02P 3/045 (2013.01); F02P 3/05 (2013.01); F02P 5/1527 (2013.01); F02P 15/08 (2013.01); F02P 15/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, by a controller, fuel quality data regarding a fuel for a spark-ignition engine;
determining, by the controller, a fuel quality metric based on the fuel quality data; and
controlling, by the controller, an ignition energy characteristic of an ignitor in response to the fuel quality metric.