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. 05, 2019
Filed:
Aug. 25, 2016
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Kensuke Yanagawa, Otsu, JP;
Nozomu Nakamura, Kyoto, JP;
Fumiaki Hiraishi, Kyoto, JP;
Masayuki Yamashita, Kyoto, JP;
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A controlling apparatus for an engine, includes: an auto-ignition index calculating unit that is configured to calculate, based on a cylinder temperature and a cylinder pressure in a combustion chamber, an auto-ignition index which indicates easiness of occurrence of auto-ignition of fuel at a crank angle before an ignition timing in a compression stroke; a first correction coefficient calculating unit that is configured to calculate, based on an amount of fuel adhering to a wall surface of the combustion chamber at the crank angle, a wall-adhering fuel correction coefficient for correcting the auto-ignition index; and a low-speed pre-ignition predicting unit that is configured to predict, based on the auto-ignition index and the wall-adhering fuel correction coefficient, occurrence of low-speed pre-ignition.