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:
Mar. 17, 2020
Filed:
Oct. 25, 2018
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Iucf-hyu (Industry-university Cooperation Foundation Hanyang University), Seoul, KR;
Seungwoo Hong, Seoul, KR;
Hyungbok Lee, Seongnam-si, KR;
Yeongseop Park, Seoul, KR;
Dong Hee Han, Seoul, KR;
Haksu Kim, Daegu, KR;
Myoungho Sunwoo, Seoul, KR;
Donghyuk Jung, Seoul, KR;
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA MOTORS CORPORATION, Seoul, KR;
IUCF-HYU (Industry-University Cooperation Foundation Hanyang University, Seoul, KR;
Abstract
A method of calculating an exhaust gas recirculation (EGR) rate using combustion pressure of a cylinder of an internal combustion engine includes: detecting, by a pressure sensor, the combustion pressure of the cylinder in real time; calculating, by a processor, a data characteristic of a combustion pressure waveform per cycle through principal component analysis based on the detected combustion pressure of the cylinder; calculating, by the processor, a moment of the combustion pressure waveform per cycle by calculating a probability distribution based on the detected combustion pressure of the cylinder; calculating, by the processor, the EGR rate using the calculated data characteristic, the calculated moment, and engine operating conditions; and controlling, by the processor, the EGR rate based on the calculated EGR rate and a target EGR rate.