| 摘要 |
PROBLEM TO BE SOLVED: To raise the degree of freedom of position for ignition of mixture, so as to ignite the mixture at an appropriate position within a combustion chamber. SOLUTION: Since an annular electrode 10 for ignition is attached to a top surface 11a of a piston confronting the combustion chamber 3 with an insulator 12 interposed in between, the ignition electrode 10 and the piston 11 are electrically insulated from each other. Electromagnetic waves radiated from an electromagnetic wave radiator 4 fill the combustion chamber 3. In the vicinity of the ignition electrode 10, the electric field intensity of the electromagnetic waves is locally increased from the difference in magnetic permeability between the ignition electrode 10 and the space within the combustion chamber 3, so that plasma discharge is generated to thereby ignite the mixture within the combustion chamber 3. COPYRIGHT: (C)2006,JPO&NCIPI
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