Patent ID: 7228840
Filing Date: 2007-06-12
Classification: F02B,F02M,F02P,H01T,Y02T

Abstract:
1. A spark ignition device of an internal combustion engine, comprising a spark plug having a plurality of spark electrodes connected between an ignition coil and the earth, said spark plug being attached to a cylinder head of the internal combustion engine for igniting a mixture of air and fuel supplied from a fuel injection valve in a cylinder, wherein a nozzle orifice of said fuel injection valve is provided at a center of said spark plug, wherein said plurality of spark electrodes and discharging gaps thereof are disposed together in an annularly shaped, arc shaped, or polygonally shaped layout on one end of said spark plug so that said spark electrodes are electrically arranged in series through the discharging gaps, and wherein said spark electrodes are disposed around said nozzle orifice so that said nozzle orifice is located at a center of said annularly shaped, arc shaped, or polygonally shaped layout and said discharging gaps.