MULTI-POINT IGNITION DEVICE AND MULTI-POINT IGNITION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a multi-point ignition device that can reliably hold an ignition device even when temperature rises.SOLUTION: A multi-point ignition device 100 for igniting a mixture in a combustion chamber 4 of an engine 1 includes: an insulation member 12 formed annularly so that an inner periphery of which faces the combustion chamber 4; a plurality of electrodes 14 held by the insulation member 12 and forming a plurality of ignition gaps 17 in the combustion chamber 4; a body part 10 provided in an outer periphery of the insulation member 12; and a ring body 11 provided between the body part 10 and the insulation member 12 and having a thermal expansion coefficient that is larger than that of the insulation member 12.SELECTED DRAWING: Figure 2