CYLINDER INJECTION TYPE SPARK IGNITION INTERNAL COMBUSTION ENGINE

Japanese Patent JP3651467

B2

PROBLEM TO BE SOLVED: To surely prevent misfire at the time of burning a laminated layer in a cylinder injection type spark ignition internal combustion engine for injecting fuel into a comparatively thin flat fan shape.
SOLUTION: This engine comprises an ignition plug, a cavity 8 formed on a top face of a piston, and a fuel injection valve 7 for injecting fuel into the cavity in a comparatively thin flat fan shape. The cavity has a bottom wall 8a, an opposite side wall 8b opposed to the fuel injection valve, and a return part 8c arranged on the opposite side wall and deflecting the fuel running on the opposite side wall in an inside direction of the cavity. The opposite side wall, when viewed from a flat face, has a portion composed of one part of an oval shape with an injection hole position of the fuel injection valve as one focal point HC and the position near the ignition plug as the other focal point MC. The position near the ignition plug as the other focal point is separated from a center line PC of the ignition plug to the fuel injection valve side.

Toyoichi Umehana
Soichi Matsushita
Shizuo Abe
Takashi Hashima
Tatsuo Kobayashi
Nobuyuki Muramatsu
Yasuto Tsutsumi
Fujimori Kokichi

JP2002339295A

May 25, 2005

February 05, 1999

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TOYOTA JIDOSHA KABUSHIKI KAISHA

F02B17/00; F02B23/10; F02F3/26; F02M61/18; F02B75/12; F02F1/24; (IPC1-7): F02B23/10; F02B17/00; F02F3/26; F02M61/18

JP9158736A
JP10008969A
JP10205413A
JP2000170537A
JP200027652A
JP11141338A

Takashi Ishida
Jun Tsuruta
Masaya Nishiyama

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