公开(公告)号：US5452087A

公开(公告)日：1995-09-19

申请号：US147830

申请日：1993-11-04

申请人： Henry F. Taylor ,  Robert A. Atkins ,  William N. Gibler ,  Chung-Eun Lee ,  James J. McCoy ,  Matthew O. Spears ,  Mark D. Oakland ,  Victor P. Swenson ,  Gregory M. Beshouri

发明人： Henry F. Taylor ,  Robert A. Atkins ,  William N. Gibler ,  Chung-Eun Lee ,  James J. McCoy ,  Matthew O. Spears ,  Mark D. Oakland ,  Victor P. Swenson ,  Gregory M. Beshouri

IPC分类号： G01L11/02 ,  G01L23/16 ,  G01B9/02

CPC分类号： G01L23/16 ,  G01L11/025

摘要： A method and apparatus is provided for measuring pressure in a pressure containing vessel with a non-intrusive, metal-embedded fiber optic pressure sensor. The pressure containing vessel may, for example, be the combustion chamber of an internal combustion engine. A Fabry-Perot Interferometer is arranged in a terminated, single mode fiber to function as a strain gauge. The fiber Fabry-Perot Interferometer (FFPI) is embedded in a metal part which may be disposed in a wall of the pressure containing vessel. The metal part and FFPI experience a longitudinal strain in response to the pressure in the vessel. In another aspect of the invention, a non-intrusive fiber containing the FFPI may be embedded along the axis of a metal bolt. The bolt may be used to attach a part or structure, which is directly exposed to the pressure, to the wall of the vessel. Consequently, the bolt and FFPI experience a longitudinal strain in response to the pressure on the part or structure. In this aspect, the part or structure exposed to the pressure may be, for example, a fuel injection valve that is attached by the bolt to a cylinder head of an internal combustion engine.

摘要翻译： 提供了一种用于利用非侵入式金属嵌入式光纤压力传感器测量含压容器中的压力的​​方法和装置。 压力容器例如可以是内燃机的燃烧室。 法布里 - 珀罗干涉仪布置在端接的单模光纤中，用作应变仪。 纤维法布里 - 珀罗干涉仪（FFPI）嵌入在可以设置在压力容器的壁中的金属部件中。 金属部件和FFPI响应于容器中的压力而经历纵向应变。 在本发明的另一方面，可以沿着金属螺栓的轴线嵌入含有FFPI的非侵入性纤维。 螺栓可以用于将直接暴露于压力的部件或结构附接到容器的壁。 因此，螺栓和FFPI响应于部件或结构上的压力而经历纵向应变。 在这方面，暴露于压力的部分或结构可以是例如通过螺栓附接到内燃机的气缸盖的燃料喷射阀。

公开(公告)号：US5714680A

公开(公告)日：1998-02-03

申请号：US147029

申请日：1993-11-04

申请人： Henry F. Taylor ,  Robert A. Atkins ,  Chung-Eun Lee ,  James H. Gardner ,  William N. Gibler ,  Matthew O. Spears ,  James J. McCoy ,  Mark D. Oakland ,  Victor P. Swenson

发明人： Henry F. Taylor ,  Robert A. Atkins ,  Chung-Eun Lee ,  James H. Gardner ,  William N. Gibler ,  Matthew O. Spears ,  James J. McCoy ,  Mark D. Oakland ,  Victor P. Swenson

IPC分类号： G01L9/00 ,  G01L23/16 ,  G01B9/02 ,  G01L7/08 ,  G02B6/26

CPC分类号： G01L23/16 ,  G01L9/0079

摘要： A method and apparatus are provided for measuring pressure in a combustion chamber of an internal combustion engine is provided with a non-intrusive, metal-embedded fiber optic pressure sensor. A Fabry-Perot Interferometer is arranged in a terminated, single mode fiber to function as a pressure gauge. The fiber Fabry-Perot Interferometer (FFPI) is embedded in a metal part which is disposed in the cylinder head of the engine. The metal part and FFPI experience a longitudinal compression in response to the pressure in the chamber. In another aspect of the invention, a non-intrusive fiber containing the FFPI is embedded in a hole drilled or otherwise provided in the metal housing of a spark plug. The spark plug is threaded into the cylinder head of an internal combustion engine and is directly exposed to the combustion chamber pressure. Consequently, the spark plug housing and FFPI experience a longitudinal strain in response to the pressure in the chamber.

摘要翻译： 提供了一种用于测量内燃机的燃烧室中的压力的​​方法和装置，其具有非侵入式金属嵌入式光纤压力传感器。 Fabry-Perot干涉仪布置在端接的单模光纤中，用作压力计。 纤维法布里 - 珀罗干涉仪（FFPI）嵌入设置在发动机气缸盖中的金属部件中。 金属部件和FFPI响应于腔室中的压力而经历纵向压缩。 在本发明的另一方面，将含有FFPI的非侵入式纤维嵌入钻孔或以其他方式设置在火花塞的金属外壳中的孔中。 火花塞螺纹连接到内燃机的气缸盖中，并直接暴露于燃烧室的压力。 因此，火花塞壳体和FFPI响应于腔室中的压力而经历纵向应变。