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:
Jul. 23, 2002
Filed:
Aug. 30, 2001
Koji Morikawa, Tokyo, JP;
Makoto Kaneko, Tokyo, JP;
Nobumasa Kani, Tokyo, JP;
Youhei Saisyu, Tokyo, JP;
Jin Itoh, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a self-igniting possible range, both intake and exhaust valves are placed in a closure condition for a period from the end of an exhaust stroke and the beginning of an intake stroke for establishing a negative overlap period in which a residual gas is pressurized to increase its temperature, thus raising the air fuel mixture temperature in a combustion chamber up to a self-igniting possible temperature. In addition, when a crank angle reaches a predetermined crank angle in the first half of an intake stroke, a fuel is injected from an in-cylinder injector into the combustion chamber. This fuel injected becomes a premixed air fuel because of being evaporated by the gas temperature in the combustion chamber, and on shifting to a compression stroke afterwards, the temperature in the combustion chamber reaches the self-igniting possible temperature.