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公开(公告)号：US20140373799A1
公开(公告)日：2014-12-25
申请号：US14364225
申请日：2013-04-26
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hiroyuki Suzuki , Akimitsu Sassa
CPC classification number: F02P19/028 , F23Q7/00 , F23Q7/001 , F23Q7/22 , F23Q2007/002 , G01L7/082 , G01M15/08
Abstract: A coupling member (180) of a glow plug (100) includes a first bend (183) and a second bend (184) folded in an axis direction OD and a joint section (185) in a tapered shape configured to connect the first bend with the second bend and reduce the diameter toward a rear end side of a body portion. Accordingly, in a limited space formed between a housing (130) and a heater unit (150), this configuration increases the length of the coupling member (180), compared with a configuration without any bend folded in the axis direction OD. This results in decreasing the spring constant k of the coupling member 180 and suppressing extension of the coupling member 180 in the axis direction due to thermal expansion.
Abstract translation: 电热塞（100）的联接构件（180）包括沿轴向OD折叠的第一弯曲部（183）和第二弯曲部（184），以及锥形形状的接合部分（185），其被构造成将第一弯曲部 具有第二弯曲并且朝着主体部分的后端侧减小直径。 因此，与壳体（130）和加热器单元（150）之间形成的有限空间相比，与在轴向OD上没有任何弯曲的构造相比，该结构增加了联接构件（180）的长度。 这导致联接构件180的弹簧常数k降低，并且由于热膨胀而抑制联接构件180在轴向方向上的延伸。
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公开(公告)号：US10048153B2
公开(公告)日：2018-08-14
申请号：US14836531
申请日：2015-08-26
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Kenjiro Nishiyuki , Toshiki Hirokawa , Akimitsu Sassa
Abstract: A variable member is connected to a rod-shaped member and connected to a tube portion to ensure airtightness within a housing, and deforms when the rod-shaped member is displaced relative to the housing along an axial direction. A position of the connection between the tube portion and the variable member in the axial direction is a position shifted from a rear end of a gap toward a front side by a predetermined length or a position at the front side with respect to the position shifted by the predetermined length. The predetermined length is a length which is 50% of a length of the gap in the axial direction.
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公开(公告)号：US10253982B2
公开(公告)日：2019-04-09
申请号：US14579459
申请日：2014-12-22
Applicant: NGK Spark Plug Co., LTD.
Inventor： Hiroyuki Suzuki , Hiroki Tsuchiya , Akimitsu Sassa
IPC: F23Q7/00
Abstract: A glow plug includes a housing having an axial hole extending in an axial line direction; a ceramic heater that is relatively displaceable with respect to the housing along the axial line direction and has at least outer surface made of ceramic; and a pressure sensor fixed to the housing and configured to output a signal based on the relative displacement of the ceramic heater. A fixed member fixed to the ceramic heater while the ceramic heater is arranged to an inner circumference of the fixed member. A welded member is welded to an outer circumference of the fixed member. An inner circumferential surface of a portion of the fixed member to which at least the welded member is welded is spaced apart from the outer surface of the ceramic heater.
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Patent Agency Ranking
公开(公告)号：US10244583B2
公开(公告)日：2019-03-26
申请号：US14710939
申请日：2015-05-13
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Akimitsu Sassa , Yoshihiro Yamamoto , Hiroshi Harada
Abstract: A glow plug including a heater (200) having a rear heat-generating element (260) formed of a resistance heat-generating element, and provided in an axial region thereof between a forward end (136) of a housing and a rear end (315) of a displacement member (300) located rearward of the forward end (136). The heat-generating element (260) is arranged separately from a forward heat-generating element (205) provided at a forward end portion of the heater.
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公开(公告)号：US09422913B2
公开(公告)日：2016-08-23
申请号：US14368577
申请日：2012-12-25
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Manabu Okinaka , Yoshihiro Yamamoto , Hiroyuki Suzuki , Akimitsu Sassa
CPC classification number: F02P19/028 , F23Q7/001 , F23Q2007/002 , G01L19/00 , G01M15/08
Abstract: A ceramic glow plug equipped with a pressure sensor including a ceramic heater, a holding device, a housing sleeve, a housing, a movable member and a pressure sensor. A heat-generating main portion P whose resistance is 75% of the total resistance of the ceramic heater is located forward of the forward end of the holding sleeve.
Abstract translation: 一种装有压力传感器的陶瓷预热塞，包括陶瓷加热器，保持装置，壳体套筒，壳体，可移动部件和压力传感器。 电阻为陶瓷加热器的总电阻的75％的发热主体P位于保持套筒的前端的前方。
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公开(公告)号：US09739487B2
公开(公告)日：2017-08-22
申请号：US14457618
申请日：2014-08-12
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Tadashi Watanabe , Yoshihiro Yamamoto , Toshiki Hirokawa , Akimitsu Sassa
CPC classification number: F23Q7/001 , F02P19/02 , F23Q2007/002 , G01L23/221
Abstract: A glow plug includes a cylindrical housing, a rod-shaped heater, a membrane portion, and a pressure sensor. The cylindrical housing extends along an axial direction. The rod-shaped heater extending along the axial direction is displaced along the axial direction and has one end portion disposed within the housing, and an other end portion which is exposed from the housing. The membrane portion connects together the heater and the housing and has a multi-layer construction which has a first layer and a second layer of which at least part is positioned nearer to the other end portion in the axial direction of the heater than the first layer. The pressure sensor measures a pressure within a combustion chamber in which the other end portion is disposed by making use of a displacement of the heater. A thickness of the second layer is larger than a thickness of the first layer.
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公开(公告)号：US09068549B2
公开(公告)日：2015-06-30
申请号：US14364225
申请日：2013-04-26
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hiroyuki Suzuki , Akimitsu Sassa
CPC classification number: F02P19/028 , F23Q7/00 , F23Q7/001 , F23Q7/22 , F23Q2007/002 , G01L7/082 , G01M15/08
Abstract: A coupling member (180) of a glow plug (100) includes a first bend (183) and a second bend (184) folded in an axis direction OD and a joint section (185) in a tapered shape configured to connect the first bend with the second bend and reduce the diameter toward a rear end side of a body portion. Accordingly, in a limited space formed between a housing (130) and a heater unit (150), this configuration increases the length of the coupling member (180), compared with a configuration without any bend folded in the axis direction OD. This results in decreasing the spring constant k of the coupling member 180 and suppressing extension of the coupling member 180 in the axis direction due to thermal expansion.
Abstract translation: 电热塞（100）的联接构件（180）包括沿轴向OD折叠的第一弯曲部（183）和第二弯曲部（184），以及锥形形状的接合部分（185），其被构造成将第一弯曲部 具有第二弯曲并且朝着主体部分的后端侧减小直径。 因此，与壳体（130）和加热器单元（150）之间形成的有限空间相比，与在轴向OD上没有任何弯曲的构造相比，该结构增加了联接构件（180）的长度。 这导致联接构件180的弹簧常数k降低，并且由于热膨胀而抑制联接构件180在轴向方向上的延伸。
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公开(公告)号：US20140352640A1
公开(公告)日：2014-12-04
申请号：US14368577
申请日：2012-12-25
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Manabu Okinaka , Yoshihiro Yamamoto , Hiroyuki Suzuki , Akimitsu Sassa
CPC classification number: F02P19/028 , F23Q7/001 , F23Q2007/002 , G01L19/00 , G01M15/08
Abstract: A ceramic glow plug equipped with a pressure sensor including a ceramic heater, a holding device, a housing sleeve, a housing, a movable member and a pressure sensor. A heat-generating main portion P whose resistance is 75% of the total resistance of the ceramic heater is located forward of the forward end of the holding sleeve.
Abstract translation: 一种装有压力传感器的陶瓷预热塞，包括陶瓷加热器，保持装置，壳体套筒，壳体，可移动部件和压力传感器。 电阻为陶瓷加热器的总电阻的75％的发热主体P位于保持套筒的前端的前方。
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