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. 25, 2008
Filed:
Jul. 08, 2004
Hidenori Moriya, Susono, JP;
Kohei Miwa, Nissin, JP;
Hidenori Moriya, Susono, JP;
Kohei Miwa, Nissin, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An internal combustion engine () generates power by burning a mixture of fuel and air in a combustion chamber (). The internal combustion engine () is provided with a crank angle sensor (), an in-cylinder pressure sensor () detecting an in-cylinder pressure at the time when a crank angle detected by the crank angle sensor () reaches a predetermined angle, and an ECU (). The ECU () calculates a combustion rate at predetermined timing based upon a control parameter which is a product of an in-cylinder pressure detected by the in-cylinder pressure sensor () and a value obtained by exponentiating an in-cylinder volume at the timing of detecting the in-cylinder pressure with a predetermined index, and corrects ignition timing by each ignition plug () so that the calculated combustion rate is equal to a target value.