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:
Oct. 13, 1992
Filed:
Jul. 17, 1991
Hidemi Ohnaka, Susono, JP;
Masaaki Tanaka, Susono, JP;
Yuuichi Kato, Susono, JP;
Michio Furuhashi, Susono, JP;
Koichi Satoya, Susono, JP;
Yasuhiro Ooi, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
A boost pressure control system for an engine, by which a boost pressure of the engine is controlled in accordance with a load of the engine. The system controls the boost pressure in two different control modes, i.e., an acceleration mode and a normal mode, and when a degree of acceleration required becomes larger than a predetermined value, the acceleration mode is selected in which the boost pressure is made higher than in the normal mode. To avoid a sudden drop of the boost pressure, the system maintains the acceleration mode even after the completion of the acceleration, until the engine load becomes low enough that the boost pressure drops to the level at which the switching to the normal mode does not cause a sudden pressure drop.