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. 31, 2006
Filed:
Sep. 24, 2004
Toshiharu Nogi, Hitachinaka, JP;
Takuya Shiraishi, Hitachinaka, JP;
Minoru Ohsuga, Hitachinaka, JP;
Yoko Nakayama, Hitachinaka, JP;
Noboru Tokuyasu, Hitachinaka, JP;
Toshiharu Nogi, Hitachinaka, JP;
Takuya Shiraishi, Hitachinaka, JP;
Minoru Ohsuga, Hitachinaka, JP;
Yoko Nakayama, Hitachinaka, JP;
Noboru Tokuyasu, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The amount of air to be introduced is controlled for each cylinder, whereby it is intended to make it possible to control the torque generated in each cylinder, perform an ultra-lean burn operation, purify the exhaust gas, and increase the output of an engine. An air flow control valve adapted to be on-off controlled in accordance with an operated quantity of an accelerator pedal is disposed in each branch pipe or intake port. The air flow control valve may be a throttle valve disposed in each branch pipe or it may be a variable intake valve for opening and closing the intake port.