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:
Nov. 28, 2023
Filed:
Jan. 15, 2019
Applicant:
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Sagamihara, JP;
Inventors:
Assignee:
MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/04 (2006.01); F02D 41/00 (2006.01); F02B 39/16 (2006.01); F02D 41/22 (2006.01); F02D 41/28 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0007 (2013.01); F02B 39/16 (2013.01); F02D 41/009 (2013.01); F02D 41/22 (2013.01); F02D 41/28 (2013.01); F02B 2039/168 (2013.01); F02D 2041/286 (2013.01); F02D 2200/0406 (2013.01);
Abstract
A temporal change of a turbo rotation speed of a turbocharger is detected for each cycle of an engine. A first vibration component corresponding to each of cylinders is specified from a pulsation component included in the temporal change of the turbo rotation speed, and the first vibration components for each of the cylinders are integrated over a plurality of cycles. A variation of combustion states in the plurality of cylinders is calculated by comparing integration results among the cylinders.