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1. 发明公开

EP0663588A1 Piston-mounted power generator, especially for telemetry systems 失效
标题翻译： Auf Kolben蒙特勒发电机，遥控系统公司。
公开(公告)号：EP0663588A1
公开(公告)日：1995-07-19
申请号：EP94120366.3
申请日：1994-12-22
申请人： CUMMINS ENGINE COMPANY, INC.
发明人： Varo, Richard G. , Archuleta, Steven A.
IPC分类号： G01M15/00 , H02K35/06
CPC分类号： H02K35/06 , F02B63/041 , G01M15/02 , G01M15/048 , H02K7/14
摘要： A piston-mounted power generator has a piston-mounted magnet unit (1) formed of a coil (2) with a permanent magnet core (3) that is fitted with pole extensions (5, 6). The unit (1) is mounted to the piston skirt (8) with the pole extensions having a small clearance from the inner wall (10) of the piston cylinder formed by cylinder wall liner (12). Shallow grooves (14) are machined into the cylinder wall (10). The grooves (14) have a crescent-shaped longitudinal cross section, that extends circumferentially in the cylinder wall (10) for a distance that is only slightly longer than the width of the pole extensions. The width of each groove (14) is equal to the spacing between the pole extensions (5, 6) and the axial spacing between the adjacent pairs of grooves (14) is equal to the thickness of the pole extensions (5, 6). Electrical power is generated in the coil 2 by the rapid change in flux in the magnetic circuit linked through it as the effective gap between the poles and wall changes as the poles (5, 6) pass each of the grooves (14) and is maximized when the spacing of the poles and grooves results in the magnetic circuit being made and broken simultaneously at both poles. Transducers and telemetry modules (TTM) can be mounted within the interior of the piston and electrically connect to the coil to be powered thereby. To increase the power generated, the grooves (14') can be backfilled with a nonmagnetic material (15) by flame-spraying or the like. For special pistons, annular grooves can be used instead ones having the preferred crescent shape.
摘要翻译：活塞安装的发电机具有由具有永磁铁芯（3）的线圈（2）形成的活塞安装的磁体单元（1），永磁铁芯（3）装配有极延伸部（5,6）。单元（1）安装到活塞裙部（8）上，其杆极延伸部与由气缸壁衬套（12）形成的活塞气缸的内壁（10）间隔小。浅槽（14）被加工到气缸壁（10）中。槽（14）具有月牙形纵截面，其在气缸壁（10）中周向延伸一段距离，其长度仅比极延伸部分的宽度稍长。每个槽（14）的宽度等于电极延伸部（5,6）之间的间隔，并且相邻的槽对（14）之间的轴向间距等于电极延伸部（5,6）的厚度。随着磁极和壁之间的有效间隙随着极（5,6）通过每个沟槽（14）而发生磁路中的磁通量的快速变化，在线圈2中产生电力，并且最大化当极和沟的间距导致磁路在两极同时被制造和断开时。传感器和遥测模块（TTM）可以安装在活塞的内部，并且电连接到由其供电的线圈。为了增加产生的功率，可以通过火焰喷射等用非磁性材料（15）来回填凹槽（14'）。对于特殊活塞，可以使用具有优选新月形状的环形槽。

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