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. 12, 2012
Filed:
Mar. 24, 2009
Internal combustion engine of spark-ignition direct-injection type and fuel injecting method thereof
Tatsuya Fujikawa, Hiroshima, JP;
Toshiaki Nishimoto, Hiroshima, JP;
Masahisa Yamakawa, Hiroshima, JP;
Kouji Shishime, Hiroshima, JP;
Kiyotaka Sato, Hiroshima, JP;
Tatsuya Fujikawa, Hiroshima, JP;
Toshiaki Nishimoto, Hiroshima, JP;
Masahisa Yamakawa, Hiroshima, JP;
Kouji Shishime, Hiroshima, JP;
Kiyotaka Sato, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
A multi-hole injector directly injects fuel into a combustion chamber. Intake air is introduced into the combustion chamber through intake ports to provide tumble flow in the combustion chamber. A cavity is formed in a part of the top surface of a piston which is eccentric to the exhaust side. In the intake stroke, fuel injection ends in a downstroke of a piston. When the crank angle is 100 degrees after the top dead center in the intake stroke at which the fuel injection ends, a most downward lower spray collides with a part of the top surface of the piston which ranges on the intake side from the edge on the exhaust side of the cavity. A most upward upper spray does not come into contact with a spark plug. Thus, the fuel injection can enhance the tumble flow to promote homogeneous dispersion of fuel-air mixture in the combustion chamber.