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Combustion pressure sensor

  • US 4,969,352 A
  • Filed: 03/12/1990
  • Issued: 11/13/1990
  • Est. Priority Date: 08/21/1989
  • Status: Expired due to Term
First Claim
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1. In an internal combustion engine having a combustion chamber, a housing component including a first wall having a mounting boss, a second wall spaced from the first wall and having an opening, and an annular wall joining the first and second walls and at least partly defining an access well from the second wall opening to the mounting boss, the first wall substantially defining at least one side of the combustion chamber and flexing in response to varying pressure therein, the second wall being relatively rigid and located away from direct exposure to combustion chamber pressure, and at least a portion of the annular wall being compressible in response to varying combustion chamber pressure, the improvement comprising:

  • a sensor including an annular insert and an annular load sensing element, the annular insert being engaged with the second wall within the access well to secure the sensor,the sensor being engaged with the first wall so as to axially load the annular load sensing element in parallel with the compressible portion of the annular wall.

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