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公开(公告)号:EP2531705A2
公开(公告)日:2012-12-12
申请号:EP10795372.1
申请日:2010-12-20
申请人: Robert Bosch GmbH
发明人: KRINN, Ilona , KOEHNE, Martin , WETZL, Franz , FELTEN, Frank , SCHMITT, Manfred , ZIEGLER, Winfried , BRZOZA, Miroslaw , GLASER, Patrick
摘要: The invention relates to a thermoelectric generator, comprising a housing in which at least one heat source pipe, at least one heat sink pipe and at least one generator element are disposed between the heat source pipe and the heat sink pipe. According to the invention, a preload mounting device is provided in the housing and provides for a spring force by which the pipes are preloaded relative to one another and which presses together the pipes and the generator element located between them. An inner face of the housing of the preload mounting device forms a support for the preload mounting device which is acted upon by a counter-force to the spring force of the preload mounting device. The invention further relates to a method for producing a thermoelectric generator. At least one heat source pipe, at least one heat sink pipe and at least one generator element are introduced into a housing. The at least one generator element is preloaded between the heat source pipe and the heat sink pipe. Furthermore, in the housing a preload mounting device is disposed, which generates a spring force for exerting a preload by which the pipes are preloaded relative to one another and the pipes compress the generator located between them. The pipes are clamped in the preload mounting device or the preload mounting device is clamped in the pipes. The pipes are acted upon by a force through an inner face of the housing, by which the preload mounting device is supported.
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公开(公告)号:EP2318687A1
公开(公告)日:2011-05-11
申请号:EP09702549.8
申请日:2009-01-09
申请人: Robert Bosch GmbH
发明人: REISS, Juergen , DEROMELAERE, Gaetan , POLSTER, Steffen , GRAF, Anja , ESCHENBACHER, Cosima , HEJTMANN, Georg , FELTEN, Frank , HENNECK, Stefan , KONSTANDIN, Alexander
IPC分类号: F02M51/02 , H01L41/083
CPC分类号: F02M51/0603 , H01L41/0833 , H01L41/0838
摘要: A piezoelectric actuator (2) for a fuel injection valve (1) has an actuator body (13) with a multiplicity of ceramic layers (25, 26, 27, 27', 27') and a multiplicity of electrode layers (28, 29, 30, 31, 32) arranged between the ceramic layers. Here, a cavity (50) is formed within the actuator body (13). In this way, it is possible for tensile stresses within the actuator body (13) of the piezoelectric actuator (2) to be displaced into non-critical regions, or dissipated in a controlled fashion by means of targeted crack initiation in said regions.
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公开(公告)号:EP2531705B1
公开(公告)日:2018-04-25
申请号:EP10795372.1
申请日:2010-12-20
申请人: Robert Bosch GmbH
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公开(公告)号:EP2318687B1
公开(公告)日:2012-03-14
申请号:EP09702549.8
申请日:2009-01-09
申请人: Robert Bosch GmbH
发明人: REISS, Juergen , DEROMELAERE, Gaetan , POLSTER, Steffen , GRAF, Anja , ESCHENBACHER, Cosima , HEJTMANN, Georg , FELTEN, Frank , HENNECK, Stefan , KONSTANDIN, Alexander
IPC分类号: F02M51/02 , H01L41/083
CPC分类号: F02M51/0603 , H01L41/0833 , H01L41/0838
摘要: A piezoelectric actuator (2) for a fuel injection valve (1) has an actuator body (13) with a multiplicity of ceramic layers (25, 26, 27, 27', 27') and a multiplicity of electrode layers (28, 29, 30, 31, 32) arranged between the ceramic layers. Here, a cavity (50) is formed within the actuator body (13). In this way, it is possible for tensile stresses within the actuator body (13) of the piezoelectric actuator (2) to be displaced into non-critical regions, or dissipated in a controlled fashion by means of targeted crack initiation in said regions.
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