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公开(公告)号：US10724917B2
公开(公告)日：2020-07-28
申请号：US15711321
申请日：2017-09-21
发明人： Yusuke Satoh , Kazuo Takahashi , Aki Sudo , Keisuke Sasaki , Masakatsu Nagai
摘要： A pressure detection device includes: a cylindrical body made of a conductor; a pressure receiver made of a conductor, the pressure receiver being mounted to one end side of the body and receiving pressure from the outside; a signal generator arranged inside the body, the signal generator being electrically connected to the pressure receiver and generating a signal corresponding to the pressure received by the pressure receiver; and a cover made of an insulator with a lower thermal conductivity than thermal conductivities of the body and the pressure receiver, the cover continuously covering an outer surface of the pressure receiver and a portion of an outer surface of the body, the portion being located at a side closer to the pressure receiver.
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公开(公告)号：US10221782B2
公开(公告)日：2019-03-05
申请号：US15021735
申请日：2015-03-26
摘要： An in-cylinder pressure detecting apparatus for detecting a pressure in a combustion chamber of an internal combustion engine is provided. The in-cylinder pressure detecting apparatus comprises a pressure detecting element mounted on a tip-portion of a fuel injection device which injects fuel into the combustion chamber, and an amplifying circuit unit having an amplifying circuit which amplifies a signal output from the pressure detecting element and outputs a pressure detection signal. An in-cylinder pressure detecting unit integrated fuel injection device is configured by integrating an in-cylinder pressure detecting unit with the fuel injection device. The in-cylinder pressure detecting unit includes the pressure detecting element, the amplifying circuit unit, and a connecting member connecting the pressure detecting element with the amplifying circuit unit. The in-cylinder pressure detecting unit integrated fuel injection device is mounted on the internal combustion engine.
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公开(公告)号：US12130201B2
公开(公告)日：2024-10-29
申请号：US18420018
申请日：2024-01-23
IPC分类号： G01M15/08
CPC分类号： G01M15/08
摘要： A pressure detection device 1 includes: an enclosure assembly configured to be mounted in a communication hole in an internal combustion engine; a diaphragm head 32 provided at one end of the enclosure assembly and configured to receive pressure of combustion gas from the internal combustion engine; and a buffer member 80 located at the diaphragm head 32 and configured to supply the combustion gas to the diaphragm head 32 while reducing the temperature of the combustion gas. Female threads formed on a first buffer member 81 of the buffer member 80 and male threads formed on a second buffer member 82 of the buffer member 80 are configured to threadably engage each other.
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公开(公告)号：US10996127B2
公开(公告)日：2021-05-04
申请号：US16079254
申请日：2017-02-21
发明人： Yuta Kanamori , Masanori Yomoyama , Tetsuya Aiba , Ikuo Takahashi , Hiroshi Nakagawa , Kazuo Takahashi , Yusuke Satoh
摘要： A pressure detection device includes: a piezoelectric element that detects a pressure change via a diaphragm head or the like; a circuit board that is provided with a processing circuit that performs electrical processing with respect to a charge signal outputted from the piezoelectric element; a conductive housing member, which has conductivity and is disposed to cover (house) the circuit board, and which is connected to the ground of the circuit board; and a housing (a leading end side housing, the diaphragm head and a rear end side housing), which houses the piezoelectric element, the circuit board and the housing member, and which is electrically insulated from the piezoelectric element, the circuit board and the housing member.
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公开(公告)号：US10458328B2
公开(公告)日：2019-10-29
申请号：US15129598
申请日：2015-03-25
发明人： Kazuo Takahashi , Yoshihiko Soga
IPC分类号： F02B77/08 , G01L23/10 , G10L19/06 , B23K26/24 , G01L9/08 , G01L19/14 , G01M15/08 , G01L19/06
摘要： A combustion pressure sensor has a case member with a joint surface on the side of a tip end and in which an opening portion is provided. A joint surface of a pressure reception member on which a combustion pressure acts is brought into planar contact with the joint surface of the case member so as to block the opening portion. A welding portion joins the joint surfaces to each other. A piezoelectric element stored in the case member converts a pressing force based on the combustion pressure transmitted from the pressure reception member into a signal. On the side of one edge side in at least the one joint surface, the one joint surface is limited to a given depth of welding from the other edge side. A predetermined clearance portion is provided so as to form a predetermined gap with the opposite joint surface and a welding portion is provided which includes at least all the limited joint surface from the other edge side in the one joint surface.
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