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, 2013
Filed:
Jul. 19, 2007
Takeshi Ashizawa, Toyota, JP;
Takeshi Ashizawa, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An ECU controls an internal combustion engine that creates a tumble flow in each engine cylinder and intensifies the tumble flow using fuel injected at a timing near the intake stroke bottom dead center during homogeneous combustion. The ECU includes a fuel property identifying mechanism identifying the property of fuel and combustion state changing mechanism changing the combustion state. When the fuel has a property that requires a stoichiometric air-fuel ratio lower than the stoichiometric air-fuel ratio for gasoline, the combustion state changing mechanism changes the combustion state by, for example, retarding the ignition timing, so that the combustion progresses moderately. This prevents an excessive increase in the combustion speed.