| 摘要 |
A combustion pressure sensor has a cylindrical housing having a fixing functional member fixed to an engines head, and a sealing functional member disposed on the inner side of the fixing member, a transmission member disposed on the inner side of the sealing member through an opening to face a combustion chamber and to be movable along the axial direction, a detecting unit disposed between the sealing member and the transmission member to detect a combustion pressure in the combustion chamber in response to the movement of the transmission member, and a seal member for shielding the opening from the combustion chamber. The members are connected with each other at a connection area such that extension and contraction in the axial direction in each of the functional members is independent of the other one.
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