US 10,830,166 B2
Noise, vibration and harshness reduction in a skip fire engine control system
Louis J. Serrano, Los Gatos, CA (US); Xin Yuan, Palo Alto, CA (US); John W. Parsels, San Jose, CA (US); Mohammad R. Pirjaberi, San Jose, CA (US); Mark A. Wilcutts, Berkeley, CA (US); and Masaki Nagashima, Pacific Grove, CA (US)
Assigned to Tula Technology, Inc., San Jose, CA (US)
Filed by Tula Technology, Inc., San Jose, CA (US)
Filed on Jan. 14, 2019, as Appl. No. 16/246,888.
Application 16/246,888 is a continuation of application No. 15/340,291, filed on Nov. 1, 2016, granted, now 10,221,786.
Application 15/340,291 is a continuation of application No. 14/992,779, filed on Jan. 11, 2016, granted, now 9,512,794, issued on Dec. 6, 2016.
Claims priority of provisional application 62/102,206, filed on Jan. 12, 2015.
Claims priority of provisional application 62/137,539, filed on Mar. 24, 2015.
Prior Publication US 2019/0145329 A1, May 16, 2019
Int. Cl. F02D 41/14 (2006.01); B60W 30/20 (2006.01); F02D 41/00 (2006.01); F02D 41/30 (2006.01)
CPC F02D 41/0087 (2013.01) [B60W 30/20 (2013.01); F02D 41/0002 (2013.01); F02D 41/1498 (2013.01); F02D 41/307 (2013.01); F02D 41/3058 (2013.01); F02D 2041/0012 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A method for operating a hybrid powertrain having an internal combustion engine and an energy storage/release device, wherein both the internal combustion engine and the energy storage/release device can deliver torque to the hybrid powertrain, the method comprising:
determining an output torque request for the hybrid powertrain;
controlling the internal combustion engine and energy storage/release device so as to meet the torque request; and
using the energy storage/release device to provide a smoothing torque to at least partially cancel hybrid powertrain torque oscillations generated by the internal combustion engine;
wherein a DC term is added to the smoothing torque, wherein energy costs are considered in determining the smoothing torque,
wherein the DC term can have either sign such that the energy storage/release device can store energy from the hybrid powertrain or release energy to the hybrid Powertrain.