| 摘要 |
The invention relates to spark igniters, for aircraft jet-engine combustion chamber. The igniter, which comprises a central electrode 7 and a cylindrical earth electrode 10 surrounding the central electrode, includes a sealing collar 17 sliding elastically over the earth electrode 10 and intended to abut on the wall 4 of the combustion chamber on which the igniter is installed. <IMAGE>
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