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1. 发明授权

US10031046B2 Method for detecting defects in a piston for an internal combustion engine 有权
公开(公告)号：US10031046B2
公开(公告)日：2018-07-24
申请号：US15048383
申请日：2016-02-19
申请人： Mahle International GmbH
发明人： Michel Fritz , Gerhard Mook , Ioannis Papadopoulos , Holger Schnell
IPC分类号： G01M15/06 , G01N27/90
摘要： A method for detecting defects in a piston for an internal combustion engine may include providing the piston in a measurement arrangement that includes a measurement probe having a first electrical coil element for generating an electromagnetic alternating field and a second electrical coil element for detecting an electromagnetic alternating field. The method may also include moving the measurement probe over a piston surface of the piston, and providing an electrical alternating current in the first coil element to generate an electromagnetic alternating field that interacts with a material of the piston in the region under the piston surface. The method may further include evaluating an electrical alternating voltage induced in the second coil element by the electromagnetic alternating field after interaction with the material of the piston.

2. 发明申请

US20160245720A1 METHOD FOR DETECTING DEFECTS IN A PISTON FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：检测内燃机活塞缺陷的方法
公开(公告)号：US20160245720A1
公开(公告)日：2016-08-25
申请号：US15048383
申请日：2016-02-19
申请人： Mahle International GmbH
发明人： Michel Fritz , Gerhard Mook , Ioannis Papadopoulos , Holger Schnell
IPC分类号： G01M15/06
CPC分类号： G01M15/06 , G01N27/902
摘要： A method for detecting defects in a piston for an internal combustion engine may include providing the piston in a measurement arrangement that includes a measurement probe having a first electrical coil element for generating an electromagnetic alternating field and a second electrical coil element for detecting an electromagnetic alternating field. The method may also include moving the measurement probe over a piston surface of the piston, and providing an electrical alternating current in the first coil element to generate an electromagnetic alternating field that interacts with a material of the piston in the region under the piston surface. The method may further include evaluating an electrical alternating voltage induced in the second coil element by the electromagnetic alternating field after interaction with the material of the piston.
摘要翻译：用于检测用于内燃机的活塞中的缺陷的方法可以包括提供活塞的测量装置，其包括具有用于产生电磁交变场的第一电线圈元件的测量探针和用于检测电磁交替的第二电线圈元件领域。该方法还可以包括将测量探针移动到活塞的活塞表面上，并且在第一线圈元件中提供电交流电流，以产生与活塞表面下方的活塞的材料相互作用的电磁交变场。该方法还可以包括在与活塞的材料相互作用之后通过电磁交变场来评估在第二线圈元件中感生的电交流电压。

3. 发明申请

US20160349047A1 METHOD FOR THE ULTRASONIC MEASUREMENT OF A WALL THICKNESS IN HOLLOW VALVES 审中-公开
标题翻译：中空阀门壁厚超声波测量方法
公开(公告)号：US20160349047A1
公开(公告)日：2016-12-01
申请号：US15116771
申请日：2014-11-20
申请人： MAHLE INTERNATIONAL GmbH
发明人： Peter Kroos , Christoph Luven , Holger Schnell , Thomas Strelow , Richard Wlassa
IPC分类号： G01B17/02 , F16K1/36 , B23P15/00 , G01N29/22 , G01N29/04
CPC分类号： G01B17/02 , B23P15/001 , F01L3/14 , F01L2103/00 , F16K1/36 , G01N29/04 , G01N29/07 , G01N29/221 , G01N2291/02854 , G01N2291/101
摘要： A method for measuring a wall thickness in hollow valves may include determining a wall thickness in a region of a valve stem using at least one ultrasonic sensor, wherein the one ultrasonic sensor may be oriented with respect to a surface on the valve stem in such a manner that an emitted ultrasound may be introduced into the surface in a perpendicular manner. The method may additionally or alternatively include determining a wall thickness in a region of a chamfer using the at least one ultrasonic sensor, wherein the at least one ultrasonic sensor may be positioned at a location on the chamfer at which an inner tangent in a cavity runs parallel to an outer tangent on the chamfer, and wherein the ultrasonic sensor is oriented with respect to the tangents in such a manner that an emitted ultrasound is introduced into the surface in a perpendicular manner.
摘要翻译：用于测量中空阀中的壁厚的方法可以包括使用至少一个超声波传感器来确定阀杆的区域中的壁厚，其中一个超声波传感器可以相对于阀杆上的表面定向在这样的位置发射的超声波可以以垂直的方式被引入到表面中。该方法可以另外地或可选地包括使用至少一个超声波传感器来确定倒角区域中的壁厚，其中，所述至少一个超声波传感器可以被定位在空腔中的内切线运行的倒角上的位置平行于倒角上的外切线，并且其中超声波传感器相对于切线定向成使得发射的超声波以垂直方式被引入到表面中。

4. 发明授权

US10139222B2 Method for the ultrasonic measurement of a wall thickness in hollow valves 有权
公开(公告)号：US10139222B2
公开(公告)日：2018-11-27
申请号：US15116771
申请日：2014-11-20
申请人： Mahle International GmbH
发明人： Peter Kroos , Christoph Luven , Holger Schnell , Thomas Strelow , Richard Wlassa
IPC分类号： G01N29/07 , F01L3/20 , G01B17/02 , B23F15/00 , B23P15/00 , F01L3/14 , F16K1/36 , G01N29/04 , G01N29/22
摘要： A method for measuring a wall thickness in hollow valves may include determining a wall thickness in a region of a valve stem using at least one ultrasonic sensor, wherein the one ultrasonic sensor may be oriented with respect to a surface on the valve stem in such a manner that an emitted ultrasound may be introduced into the surface in a perpendicular manner. The method may additionally or alternatively include determining a wall thickness in a region of a chamfer using the at least one ultrasonic sensor, wherein the at least one ultrasonic sensor may be positioned at a location on the chamfer at which an inner tangent in a cavity runs parallel to an outer tangent on the chamfer, and wherein the ultrasonic sensor is oriented with respect to the tangents in such a manner that an emitted ultrasound is introduced into the surface in a perpendicular manner.

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