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. 07, 2022
Filed:
Oct. 28, 2020
Tula Technology, Inc., San Jose, CA (US);
Steven E. Carlson, Oakland, CA (US);
Xin Yuan, Palo Alto, CA (US);
Siamak Hashemi, Farmington Hills, MI (US);
Vijay Srinivasan, Farmington Hills, MI (US);
Srihari Kalluri, Ann Arbor, MI (US);
Andrew W. Phillips, Rochester, MI (US);
Mark A. Wilcutts, Berkeley, CA (US);
Louis J. Serrano, Los Gatos, CA (US);
Shikui Kevin Chen, San Jose, CA (US);
Tula Technology, Inc., San Jose, CA (US);
Abstract
Controllers and methods for managing transitions into and/or out of a cylinder cut off mode are described. In some embodiments, a skip fire based transition into a cylinder cut off mode is used in which the fraction of working cycles that are fired is gradually reduced to a threshold firing fraction. Once the threshold firing fraction has been reached, all of the working chambers are deactivated.