公开(公告)号：DE102008041712B4

公开(公告)日：2021-03-04

申请号：DE102008041712

申请日：2008-08-29

Applicant: DENSO CORP

Inventor： GOTO TSUNETOSHI ,  WATARAI TAKEHIRO ,  HIROSE YOSHINOBU

IPC: F23Q7/00

Abstract: Glühkerze (100) mit einem Verbrennungsdrucksensor (16), mit:einem Heizbauteil (11), das angepasst ist, um in einem Ende eines Kerzenlochs (1b) zum Erhöhen einer Temperatur einer Brennkammer (2) platziert zu sein;einem zylindrischen Bauteil (14), das an einer Außenumfangswand des Heizbauteils (11) fest gesichert ist;einem Gehäuse (10), das angepasst ist, um fest an dem Kerzenloch (1b) gesichert zu sein und eine Außenumfangswand des zylindrischen Bauteils (14) hält, damit dieses zu einem axialen Versatz in der Lage ist;einer Membran (15), die durch das Gehäuse (10) und das zylindrischen Bauteil (14) fest gestützt ist;dem Verbrennungsdrucksensor (16), der an der Membran (15) montiert ist und zum Erfassen eines Verbrennungsdrucks in der Brennkammer (2) auf eine Dehnung anspricht, die in der Membran (15) aufgrund eines axialen Versatzes des zylindrischen Bauteils (14) auftritt;einer Abdeckung (19), die mit dem Gehäuse (10) verbunden ist, um einen hermetisch geschlossenen Innenraum (B) zur abgedichteten Aufnahme des Verbrennungsdrucksensors (16) festzulegen, und die eine Einbringbohrung (119) aufweist; undeinem Leitungskabel (17), das flexibel ist und mit dem Heizbauteil (11) fest verbunden ist, um dieses mit elektrischem Strom zu versorgen, wobei sich das Leitungskabel (17) durch die Einbringbohrung (119) erstreckt und mit einer Innenumfangswand der Einbringbohrung (119) hermetisch abgedichtet verbunden ist,wobeiein Zwischenraum (20) zwischen einer Außenumfangswand des Leitungskabels (17) und einer Innenumfangswand des zylindrischen Bauteils (14) vorgesehen ist,ein Antivibrationsbauteil (18) in dem Zwischenraum (20) angeordnet ist, undder Zwischenraum (20) derart vorgesehen ist, dass die Außenumfangswand des Leitungskabels (17) und die Innenumfangswand des zylindrischen Bauteils (14) nicht dazu gebracht werden, miteinander in Kontakt zu treten, wenn sich das Leitungskabel (17) durch einen von einer Schwankung des Verbrennungsdrucks verursachten axialen Versatz des Heizbauteils (11) am stärksten biegt.

公开(公告)号：FR2847731A1

公开(公告)日：2004-05-28

申请号：FR0313688

申请日：2003-11-21

Applicant: DENSO CORP

Inventor： KANAO KEIJI ,  GOTO TSUNETOSHI

IPC: H01T13/20 ,  H01T13/32 ,  C22C5/04 ,  H01T13/39 ,  H01T21/02

Abstract: A spark plug comprises center electrode, insulator, insulator housing, and ground electrode. The ground electrode has one end portion connected to the housing and other end portion opposed to the center electrode via a discharge gap. An iridium alloy-firing tip made of a rod-like iridium alloy is connected to a portion of at least one of the center electrode and the ground electrode facing to the discharge gap. A spark plug comprises center electrode (30), insulator holding the center electrode, housing holding and fixing the insulator, and ground electrode having one end portion (31) connected to the housing and the other end portion opposed to the center electrode via a discharge gap. An iridium (Ir) alloy firing tip (50) made of a rod-like Ir alloy is connected to a portion of the center electrode and the ground electrode facing to the discharge gap. The cross-sectional area of Ir alloy firing tip taken along a plane perpendicular to an axis of the iridium alloy-firing tip has an out-of-round configuration. When the firing tip is assumed that a circumscribed circle has a largest diameter A among virtual circles each contacting the portions of a visible outline of the cross- sectional area and an inscribed circle has a largest diameter B among inscribed circles each being coaxial with the circumscribed circle, a ratio of the diameter B to the diameter A (B/A) is 0.8-1. The visible outline of the cross-sectional area is constituted by a serial joint of at least 7 straight or curved line elements, and the angle between each line element and adjacent line element is 125-235 degrees. An Independent claim is also included for a method for manufacturing a spark plug comprising configuring the cross-sectional area of the Ir alloy firing tip in such a manner that the visible outline is constituted by a serial joint of at least 7 straight or curved line elements and an angle between each line element and an adjacent line element is 125-235 degrees, and welding an entire circumferential surface of the Ir alloy firing tip by laser welding to the portion of the center electrode and the ground electrode facing to the discharge gap.

公开(公告)号：BR102014023730A2

公开(公告)日：2016-05-03

申请号：BR102014023730

申请日：2014-09-24

Applicant: DENSO CORP

Inventor： GOTO TSUNETOSHI

IPC: G01N27/409

Abstract: sensor de gás um sensor de gás inclui pelo menos um elemento de sensor de gás 4, um aquecedor 3, um par de cabos de condução 2, um par de encaixes terminais 1 formado para conectar entre os blocos de eletrodo 31 disposto nos respectivos lados de superficies opostas em uma lateral de extremidade de base do aquecedor e o par de cabos de condução 2. o encaixe terminal 1 inclui uma base conformada em placa 1 o se estende em uma direção axial, um cotovelo 11, uma parte de contato 12, e uma parte de friso 13. a parte de contato 12 é formada em uma forma esférica de forma a se projetar em direção ao bloco de eletrodo 31.

公开(公告)号：BR102014024053A2

公开(公告)日：2016-04-19

申请号：BR102014024053

申请日：2014-09-26

Applicant: DENSO CORP

Inventor： GOTO TSUNETOSHI

IPC: C04B35/48 ,  G01N27/407 ,  G01N27/409 ,  H01M8/1253

Abstract: sensor de gás. um sensor de gás (gs) para detectar um componente específico em um gás a ser medido. um elemento de sensor de gás ( 4) inclui uma porção de detecção (40) formada de uma camada de base de eletrólito sólido ( 400), uma camada de eletrodo de referência ( 401 ), e uma camada de eletrodo de medição (402). um aquecedor (5) se estende de maneira axial e é retangular na forma da seção transversal, e é configurado para aquecer o elemento de sensor de gás ( 4 ). um encaixe terminal positivo (1) inclui um prendedor de aquecedor (10) para prender o aquecedor (5). o prendedor de aquecedor (10) inclui um par de superficies de contato de prendedor (102) para pressionar de maneira resiliente contra superfícies laterais longas do aquecedor (5) para permitir o movimento do aquecedor (5) em uma direção longitudinal de seção transversal, e os encaixes terminais de aquecedor (2) incluem, na extremidade proximal do aquecedor ( 5), superficies de contato de condução (20) para pressionar de maneira resiliente contra um par de aquecedores de eletrodos (52) provido nas superficies laterais longas do aquecedor (5).

公开(公告)号：DE10346580A1

公开(公告)日：2004-05-13

申请号：DE10346580

申请日：2003-10-07

Applicant: DENSO CORP

Inventor： KANAO KEIJI ,  GOTO TSUNETOSHI ,  ABE NOBUO ,  SUZUKI HIROFUMI

IPC: F02P13/00 ,  F16J15/08 ,  H01T13/08

Abstract: An object of the present invention is to provide a spark plug gasket (provided on the outer surface of the metal member of a spark plug) which assures a sealing between the spark plug and engine head by elastically deforming itself during screwing in the spark plug into an engine head and at the same time does not easily suffer an plastic deformation during driving the engine. The two requirements for assuring the close contact capability and suppressing the plastic deformation are simultaneously satisfied by a twice or three-times bent gasket with Hv0.5 of greater than or equal to 200 and smaller than or equal to 400. particularly, the twice bent gasket of the thickness of the gasket plate itself of 0.3 mm and made of SUS 304 of Hv0.5 of 350 did hardly suffer a loss of springiness under 50 G vibration.

公开(公告)号：DE10354439B4

公开(公告)日：2015-05-28

申请号：DE10354439

申请日：2003-11-21

Applicant: DENSO CORP

Inventor： KANAO KEIJI ,  GOTO TSUNETOSHI

IPC: C22C5/04 ,  H01T13/20 ,  B23K26/323 ,  H01T13/32 ,  H01T13/39 ,  H01T21/02

Abstract: Zündkerze, mit: einer Mittelelektrode (30); einem die Mittelelektrode (30) haltenden Isolator (20); einem den Isolator (20) haltenden und fixierenden Gehäuse (10); einer Masseelektrode (40), von der ein Endabschnitt mit dem Gehäuse (10) verbunden ist und der andere Endabschnitt der Mittelelektrode (30) über einen dazwischen liegenden Funkenspalt (70) gegenüberliegt; und einer stabförmigen Zündspitze (50, 60) aus einer Ir-Legierung, von der ein Ende in einer Achse der Zündspitze (50, 60) mit der Mittelelektrode (30) oder der Masseelektrode (40) verbunden ist, dadurch gekennzeichnet, dass die Zündspitze (50, 60) entlang einer zur Achse der Zündspitze (50, 60) senkrechten Ebene eine Querschnittsfläche (55) hat, deren sichtbarer Umriss als eine mehreckige Form ausgebildet ist, die aus einer Gruppe von mehreckigen Formen ausgewählt ist, die aus einem Siebeneck bis zu einem Zwölfeck besteht, und bei der, wenn unterstellt wird, dass in der Querschnittsfläche (55) der Zündspitze (50, 60) ein Umkreis (C1) einen größten Durchmesser A unter fiktiven Kreisen hat, die jeweils mindestens drei Abschnitte eines sichtbaren Umrisses der Querschnittsfläche berühren, und ein Inkreis (C2) einen größten Durchmesser B unter Inkreisen hat, die mit dem Umkreis (C1) gleichachsig sind, das Verhältnis B/A des Durchmessers B zu dem Durchmesser A größer als 0,8 und nicht größer als 0,96 ist; und die gesamte Umfangsfläche des einen Endes der Zündspitze (50, 60) durch Laserschweißen mit einem Abschnitt der Mittelelektrode (30) oder der Masseelektrode (40) verschweißt ist, der dem Funkenspalt (70) zugewandt ist.

公开(公告)号：FR2877777A1

公开(公告)日：2006-05-12

申请号：FR0508870

申请日：2005-08-30

Applicant: DENSO CORP

Inventor： ABE NOBUO ,  KAWASHIMA YASUSHI ,  GOTO TSUNETOSHI

IPC: H01T13/20

Abstract: Il est proposé une bougie d'allumage (1) conçue de façon à être compacte sans nuire à la résistance mécanique d'un isolant en porcelaine. La bougie d'allumage (1) comprend une enveloppe métallique (2) ayant une extrémité basale et une extrémité sommitale. L'isolant (3) en porcelaine est constitué par un cylindre creux qui comporte un corps et une tête (31) d'isolant. Le corps est retenu à l'intérieur de l'enveloppe métallique (2). La tête (31) d'isolant s'étend depuis l'extrémité basale de l'enveloppe métallique (2) selon une direction longitudinale de l'isolant (3) en porcelaine et a une longueur comprenant un corps principal (366) aboutissant au corps de l'isolant (3) en porcelaine et une partie terminale située loin du corps. Le corps principal (366) a un diamètre extérieur D1, un diamètre intérieur D2 et un module de section Z, au niveau d'une partie formant diamètre extérieur le plus petit de celui-ci, qui satisfont les relations 7,1 mm ≤D1 ≤8,8 mm, D2 ≥2,8 mm et Z ≥33 mm3.

公开(公告)号：DE102005041094A1

公开(公告)日：2006-03-23

申请号：DE102005041094

申请日：2005-08-30

Applicant: DENSO CORP

Inventor： ABE NOBUO ,  KAWASHIMA YASUSHI ,  GOTO TSUNETOSHI

IPC: H01T13/02 ,  H01T13/22

Abstract: A spark plug is provided which is designed to be compact without sacrificing a mechanical strength of a porcelain insulator. The spark plug includes a metal shell having a base end and a top end. The porcelain insulator is made of a hollow cylinder which includes a body and an insulator head. The body is retained within the metal shell. The insulator head extends from the base end of the metal shell in a lengthwise direction of the porcelain insulator and has a length made up of a major body leading to the body of the porcelain insulator and an end portion lying far away from the body. The major body has an outer diameter D 1 , an inner diameter D 2 , and a section modulus Z at a smallest-outer diameter portion thereof which meet relations of 7.1 mm =2.8 mm, and Z>=33 mm 3 .

公开(公告)号：DE10354439A1

公开(公告)日：2004-07-22

申请号：DE10354439

申请日：2003-11-21

Applicant: DENSO CORP

Inventor： KANAO KEIJI ,  GOTO TSUNETOSHI

IPC: C22C5/04 ,  H01T13/20 ,  H01T13/32 ,  H01T13/39 ,  H01T21/02

Abstract: A spark plug comprises center electrode, insulator, insulator housing, and ground electrode. The ground electrode has one end portion connected to the housing and other end portion opposed to the center electrode via a discharge gap. An iridium alloy-firing tip made of a rod-like iridium alloy is connected to a portion of at least one of the center electrode and the ground electrode facing to the discharge gap. A spark plug comprises center electrode (30), insulator holding the center electrode, housing holding and fixing the insulator, and ground electrode having one end portion (31) connected to the housing and the other end portion opposed to the center electrode via a discharge gap. An iridium (Ir) alloy firing tip (50) made of a rod-like Ir alloy is connected to a portion of the center electrode and the ground electrode facing to the discharge gap. The cross-sectional area of Ir alloy firing tip taken along a plane perpendicular to an axis of the iridium alloy-firing tip has an out-of-round configuration. When the firing tip is assumed that a circumscribed circle has a largest diameter A among virtual circles each contacting the portions of a visible outline of the cross- sectional area and an inscribed circle has a largest diameter B among inscribed circles each being coaxial with the circumscribed circle, a ratio of the diameter B to the diameter A (B/A) is 0.8-1. The visible outline of the cross-sectional area is constituted by a serial joint of at least 7 straight or curved line elements, and the angle between each line element and adjacent line element is 125-235 degrees. An Independent claim is also included for a method for manufacturing a spark plug comprising configuring the cross-sectional area of the Ir alloy firing tip in such a manner that the visible outline is constituted by a serial joint of at least 7 straight or curved line elements and an angle between each line element and an adjacent line element is 125-235 degrees, and welding an entire circumferential surface of the Ir alloy firing tip by laser welding to the portion of the center electrode and the ground electrode facing to the discharge gap.

公开(公告)号：FR2845529A1

公开(公告)日：2004-04-09

申请号：FR0311600

申请日：2003-10-03

Applicant: DENSO CORP

Inventor： KANAO KEIJI ,  GOTO TSUNETOSHI ,  ABE NOBUO ,  SUZUKI HIROFUMI

IPC: F02P13/00 ,  F16J15/08 ,  H01T13/08

Abstract: An object of the present invention is to provide a spark plug gasket (provided on the outer surface of the metal member of a spark plug) which assures a sealing between the spark plug and engine head by elastically deforming itself during screwing in the spark plug into an engine head and at the same time does not easily suffer an plastic deformation during driving the engine. The two requirements for assuring the close contact capability and suppressing the plastic deformation are simultaneously satisfied by a twice or three-times bent gasket with Hv0.5 of greater than or equal to 200 and smaller than or equal to 400. particularly, the twice bent gasket of the thickness of the gasket plate itself of 0.3 mm and made of SUS 304 of Hv0.5 of 350 did hardly suffer a loss of springiness under 50 G vibration.