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. 06, 2006
Filed:
Mar. 31, 2004
Shiro Yamaoka, Hitachi, JP;
Minoru Oosuga, Hitachinaka, JP;
Toshiharu Nogi, Hitachinaka, JP;
Takuya Shiraishi, Hitachinaka, JP;
Yuusuke Kihara, Hitachi, JP;
Shiro Yamaoka, Hitachi, JP;
Minoru Oosuga, Hitachinaka, JP;
Toshiharu Nogi, Hitachinaka, JP;
Takuya Shiraishi, Hitachinaka, JP;
Yuusuke Kihara, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A compression ignition internal combustion engine includes a combustion chamber, an intake valve, intake port, and an exhaust valve. The temperature and pressure in the combustion chamber are increased to self-ignite an air-fuel mixture with the compressive operation of a piston after closing of the intake valve. A fuel injection valveinjects pressurized air, serving as an ignition trigger factor, directly into the combustion chamber so that the air-fuel mixture under the expansion stroke of the piston is brought into an ignitable state. An ECUcontrols the injection timing of the pressurized air depending on the ignition timing. The self-ignition timing can be controlled to a proper timing in a wide engine operating range with respect to a load and a revolution speed without changing the shape of the combustion chamber to a large extent.