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. 02, 2010
Filed:
Jul. 26, 2006
Hidenori Moriya, Susono, JP;
Hidenori Moriya, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An internal combustion engine control apparatus includes an in-cylinder pressure sensor for detecting in-cylinder pressure. A combustion start time and combustion end time, which are parameters serving as control indexes for an internal combustion engine, are determined in accordance with ignition timing. Information about a heat release amount is acquired in accordance with the in-cylinder pressures that are measured at two points by the in-cylinder pressure sensor. The in-cylinder pressure is estimated in accordance with a relationship among the heat release amount information, control index parameters, and in-cylinder pressure.