The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2023
Filed:
Mar. 03, 2022
Applicant:
Tula Technology, Inc., San Jose, CA (US);
Inventors:
Shikui Kevin Chen, San Jose, CA (US);
Matthew A. Younkins, San Jose, CA (US);
Louis J. Serrano, Los Gatos, CA (US);
Assignee:
Tula Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/20 (2006.01); F02D 41/00 (2006.01); F01N 11/00 (2006.01); F01N 3/021 (2006.01); F02D 41/40 (2006.01); F01N 13/00 (2010.01); F01N 3/08 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2033 (2013.01); F01N 3/021 (2013.01); F01N 3/0814 (2013.01); F01N 3/2066 (2013.01); F01N 11/005 (2013.01); F01N 13/009 (2014.06); F02D 41/0087 (2013.01); F02D 41/401 (2013.01); F01N 2430/08 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1602 (2013.01); F02D 2041/0012 (2013.01); F02D 2200/0802 (2013.01); F02D 2200/0804 (2013.01); Y02T 10/12 (2013.01); Y02T 10/40 (2013.01);
Abstract
A skip fire engine controller and method of control is described wherein during transitions from a first firing density to a second firing density, a firing density and a pumping density are separately set so as to balance the conflicting demands of (a) torque control, (b) Noise, Vibration and Harshness (NVH), (c) air flow through the engine and (d) air-fuel ratio.