US 11,946,423 B2
Recharging management for skipping cylinders
Louis Joe Serrano, Los Gatos, CA (US); Xiaoping Cai, Fremont, CA (US); Yongyan Cao, San Jose, CA (US); Vijay Srinivasan, Farmington Hills, MI (US); Kevin Shikui Chen, San Jose, CA (US); Andrea Marie Evans, Columbus, IN (US); and Avra Brahma, Fishers, IN (US)
Assigned to Tula Technology, Inc., San Jose, CA (US)
Filed by Tula Technology, Inc., San Jose, CA (US); and Cummins, Inc., Columbus, IN (US)
Filed on Jul. 12, 2021, as Appl. No. 17/373,247.
Claims priority of provisional application 63/071,295, filed on Aug. 27, 2020.
Prior Publication US 2022/0065182 A1, Mar. 3, 2022
Int. Cl. F02D 41/00 (2006.01); F02D 35/02 (2006.01); F02D 41/14 (2006.01); F02D 41/38 (2006.01)
CPC F02D 41/0087 (2013.01) [F02D 35/024 (2013.01); F02D 41/0007 (2013.01); F02D 41/0055 (2013.01); F02D 41/0077 (2013.01); F02D 41/1401 (2013.01); F02D 41/38 (2013.01); F02D 2041/0012 (2013.01); F02D 2041/141 (2013.01); F02D 2041/1433 (2013.01); F02D 2200/0406 (2013.01)] 37 Claims
OG exemplary drawing
 
1. A method for managing recharging of cylinders of an internal combustion engine during skip fire operation of the engine, the method comprising:
determining a maximum allowed deactivation time for a cylinder; and
recharging the cylinder, without combustion, before the maximum allowed deactivation time is exceeded.