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:
Jun. 23, 2009
Filed:
Nov. 18, 2005
Hidenori Moriya, Susono-shi, JP;
Hidenori Moriya, Susono-shi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An internal combustion engine (), which generates power by burning a mixture of fuel and air in each combustion chamber (), is provided with an in-cylinder pressure sensor () that is located in the combustion chamber () for detecting an in-cylinder pressure, and an ECU (). ECU () calculates a heat quantity of air Qin the combustion chamber () and a heat generation quantity of fuel Qprovided into the combustion chamber (), based upon the in-cylinder pressure detected by the in-cylinder pressure sensor () and calculates an air-fuel ratio AF in the combustion chamber () based upon the heat generation quantity Qof the fuel and the heat quantity of the air Q.