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:
May. 17, 2022
Filed:
Oct. 12, 2020
Applicant:
Yelir, Inc., Fort Collins, CO (US);
Inventors:
Michael B. Riley, Fort Collins, CO (US);
John Craig Hedrick, Boerne, TX (US);
Steven Gerard Fritz, La Vernia, TX (US);
Assignee:
Yelir, Inc., Fort Collins, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 41/02 (2006.01); F02D 13/06 (2006.01); F02D 41/14 (2006.01); F02B 75/02 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0245 (2013.01); F02D 13/06 (2013.01); F02D 41/0007 (2013.01); F02D 41/0087 (2013.01); F02D 41/1446 (2013.01); F02B 2075/025 (2013.01);
Abstract
A method of raising exhaust gas temperatures of a two-cycle uniflow scavenged engine at lower loads. At lower loads, the exhaust valves are activated with a frequency that is less frequent than every engine cycle. This exhaust valve deactivation may be combined with additional engine operating strategies, such as by using fewer than all cylinders as combusting cylinders, adjusting fueling to combusting cylinders, and reducing compressor output.