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    • 8. 发明授权
    • Pressure-measuring device
    • 压力测量装置
    • US07954382B2
    • 2011-06-07
    • US12304925
    • 2007-10-16
    • Christoph KernEwgenij LandesReiko ZachMichael SchuettoffMichael KleindlChristian DoeringSteffen SchottPavlo Saltikov
    • Christoph KernEwgenij LandesReiko ZachMichael SchuettoffMichael KleindlChristian DoeringSteffen SchottPavlo Saltikov
    • G01L7/08G01L23/22
    • G01L23/222F23Q2007/005G01L23/10
    • A pressure-measuring device is situated in a chamber of an internal combustion engine. The pressure-measuring device has a housing, a force-transmitting element that protrudes partly from the housing at a chamber-side opening of the housing, and a pressure sensor that is situated in an interior space of the housing. The pressure sensor stands in effective connection to the force-transmitting element. In addition, a diaphragm is provided that seals the interior space of the housing, in which the pressure sensor is situated, against the chamber-side opening. The diaphragm, which is preferably fashioned as a metal diaphragm, has a force-transmitting segment that is oriented in an axial direction of the force-transmitting element. Moreover, the pressure sensor stands in effective connection with the force-transmitting element via the force-transmitting segment of the diaphragm. In this way, there takes place at least a partial compensation of thermally caused changes in length of the diaphragm, caused for example by hot combustion gases, and resulting in periodic impairments of the pressure measurement made by the pressure sensor.
    • 压力测量装置位于内燃机的腔室中。 压力测量装置具有壳体,在壳体的室侧开口处部分地从壳体突出的力传递元件和位于壳体的内部空间中的压力传感器。 压力传感器有效连接到力传递元件。 此外,设置有隔膜,其将压力传感器所在的壳体的内部空间密封到室侧开口。 优选地,作为金属隔膜形成的隔膜具有沿力传递元件的轴向定向的力传递段。 此外,压力传感器经由隔膜的力传递段与力传递元件有效连接。 以这种方式,至少发生热引起的隔膜长度变化的部分补偿,例如通过热燃烧气体引起的,并且导致由压力传感器进行的压力测量的周期性损伤。