Title:
COMBUSTION PRESSURE SENSOR AND ITS ASSEMBLY IN AN ENGINE COMPONENT OF AN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2018/084711
Kind Code:
A3
Abstract:
A combustion pressure sensor comprises a sensor body (9), at least one first optical fibre (1, 2) inserted into the sensor body (9), and a resiliently deformable membrane (7; 13) attached to the sensor body (9). The at least one first optical fibre (1, 2) is arranged for allowing measuring of a pressure induced deflection of the resiliently deformable membrane (9). An end (25) of the at least one first optical fibre (1, 2) is connected to the sensor body (9) in a manner that withstands temperatures within a range of temperatures hot enough to regenerate soot depositions on the resiliently deformable membrane (7; 13), yet cool enough to prevent melting of the resiliently deformable membrane (7; 13). When included in an internal combustion engine, at least one such combustion pressure sensor is positioned with its resiliently deformable membrane (7; 13) in direct contact with a surrounding body (8) of an engine component for direct transfer of heat to the surrounding body (8).
Inventors:
NOOIJEN PAUL JOHAN WILLEM MARIA (NL)
Application Number:
PCT/NL2017/050717
Publication Date:
June 14, 2018
Filing Date:
November 07, 2017
Export Citation:
Assignee:
NOOIJEN PAUL JOHAN WILLEM MARIA (NL)
International Classes:
F02M65/00; G01L9/00; G01L11/02; G01L23/06; G01M15/08; G02B6/44
Domestic Patent References:
| WO1998035210A1 | 1998-08-13 |
Foreign References:
| US5146083A | 1992-09-08 | |||
| US20040031326A1 | 2004-02-19 | |||
| US6131465A | 2000-10-17 |
Attorney, Agent or Firm:
JANSEN, C. M. (NL)
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