JP2016133070A - Fuel injection valve with cylinder pressure sensor - Google Patents

Fuel injection valve with cylinder pressure sensor Download PDF

Info

Publication number
JP2016133070A
JP2016133070A JP2015008437A JP2015008437A JP2016133070A JP 2016133070 A JP2016133070 A JP 2016133070A JP 2015008437 A JP2015008437 A JP 2015008437A JP 2015008437 A JP2015008437 A JP 2015008437A JP 2016133070 A JP2016133070 A JP 2016133070A
Authority
JP
Japan
Prior art keywords
signal transmission
fuel injection
cylinder pressure
injection valve
transmission member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2015008437A
Other languages
Japanese (ja)
Inventor
岳 佐藤
Gaku Sato
佐藤　　岳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Keihin Corp
Original Assignee
Keihin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Keihin Corp filed Critical Keihin Corp
Priority to JP2015008437A priority Critical patent/JP2016133070A/en
Priority to DE102016200572.3A priority patent/DE102016200572A1/en
Publication of JP2016133070A publication Critical patent/JP2016133070A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
    • G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/24—Fuel-injection apparatus with sensors
    • F02M2200/247—Pressure sensors

Abstract

PROBLEM TO BE SOLVED: To provide a fuel injection valve with a cylinder pressure sensor for allowing easy and reliable connection of a signal transmission member, when constituted by a plurality of members, and still preventing the occurrence of disconnection, etc.SOLUTION: A signal transmission part 24 constituting a fuel injection valve 10 has a first signal transmission member 66 connected at its front end to a sensor 20, and a second signal transmission member 68 connected at its base end to an amplification member 48. A first connection 76 of the first signal transmission member 66, formed in a convex shape, is inserted into a concave 88 of a second connection 86 of the second signal transmission member 68 and connected thereto with solder 78. In this case, between the first connection 76 and the concave 88, there is a predetermined clearance C along the axial direction.SELECTED DRAWING: Figure 2

Description

本発明は、内燃機関における燃焼室に直接噴射する直噴式の内燃機関に用いられ、前記燃焼室内の筒内圧を検出可能なセンサを有した筒内圧センサ付き燃料噴射弁に関する。   The present invention relates to a fuel injection valve with an in-cylinder pressure sensor that is used in a direct injection type internal combustion engine that directly injects into a combustion chamber of the internal combustion engine and has a sensor capable of detecting the in-cylinder pressure in the combustion chamber.

従来から、内燃機関における燃焼室の筒内圧を検出する目的で、燃料噴射弁の先端に内圧センサを装着したものが知られている。この内圧センサは、燃料噴射弁の先端と内燃機関を構成するシリンダヘッドの取付孔との間に配置され、該内圧センサには、検出した筒内圧を検出信号として外部へ伝達するためにリード線が接続されている。そして、このリード線が、例えば、電子制御ユニットに接続され、筒内圧が検出信号として前記電子制御ユニットに出力されることにより前記筒内圧に基づいた制御等が行われる（例えば、特許文献１参照）。   2. Description of the Related Art Conventionally, an internal pressure sensor is known at the tip of a fuel injection valve for the purpose of detecting the in-cylinder pressure of a combustion chamber in an internal combustion engine. This internal pressure sensor is disposed between the tip of the fuel injection valve and the mounting hole of the cylinder head that constitutes the internal combustion engine. The internal pressure sensor has a lead wire for transmitting the detected in-cylinder pressure to the outside as a detection signal. Is connected. The lead wire is connected to, for example, an electronic control unit, and the in-cylinder pressure is output to the electronic control unit as a detection signal, thereby performing control based on the in-cylinder pressure (see, for example, Patent Document 1). ).

特開平９−５３４８３号公報JP-A-9-53483

しかしながら、上述した燃料噴射弁に装着される内圧センサでは、該内圧センサと電子制御ユニットとを接続しているリード線が燃料噴射弁の外部に露出している。そのため、例えば、内圧センサを燃料噴射弁と共にシリンダヘッドへ組み付ける際や組み付け状態において、前記リード線に対して負荷がかかることで断線してしまう恐れがあり、該断線によって筒内圧を検出できないことが懸念される。   However, in the internal pressure sensor attached to the fuel injection valve described above, the lead wire connecting the internal pressure sensor and the electronic control unit is exposed to the outside of the fuel injection valve. Therefore, for example, when the internal pressure sensor is assembled to the cylinder head together with the fuel injection valve or in the assembled state, there is a risk of disconnection due to a load applied to the lead wire, and the in-cylinder pressure cannot be detected due to the disconnection. Concerned.

また、上述した断線等のリスクを回避する目的で、例えば、リード線を燃料噴射弁の内部に収納することが考えられるが、センサから出力端子まで一本のリード線で接続して収納することが困難であるという問題がある。   Further, for the purpose of avoiding the risk of disconnection or the like described above, for example, it is conceivable to store the lead wire inside the fuel injection valve, but it is connected and stored from the sensor to the output terminal with a single lead wire. There is a problem that is difficult.

本発明は、前記の課題を考慮してなされたものであり、信号伝達部材を複数の部材から構成した場合でも、その接続を容易且つ確実に行うことができ、しかも断線等の発生を防止することが可能な筒内圧センサ付き燃料噴射弁を提供することを目的とする。   The present invention has been made in consideration of the above-described problems. Even when the signal transmission member is composed of a plurality of members, the connection can be easily and reliably performed, and the occurrence of disconnection or the like is prevented. It is an object of the present invention to provide a fuel injection valve with an in-cylinder pressure sensor.

前記の目的を達成するために、本発明は、内燃機関の燃焼室に対して燃料を直接噴射する燃料噴射弁の端部に燃焼室内の筒内圧を検出するセンサを有した筒内圧センサ付き燃料噴射弁において、
センサで検出された筒内圧を検出信号として伝達する信号伝達部材を有し、
信号伝達部材は、センサに接続される第１伝達部と、
第１伝達部に接続されると共に、検出信号を外部へと出力する信号端子へ接続される第２伝達部と、
を備え、
第１伝達部と第２伝達部との接続部には、その一方に形成される凹状接続部と、他方に形成され凹状接続部内に挿入される凸状接続部とを有し、凹状接続部と凸状接続部との間にクリアランスが設けられると共に、凹状接続部と凸状接続部とが半田によって電気的に接続されることを特徴とする。 In order to achieve the above object, the present invention provides a fuel with an in-cylinder pressure sensor having a sensor for detecting the in-cylinder pressure in the combustion chamber at the end of a fuel injection valve that directly injects fuel into the combustion chamber of the internal combustion engine. In the injection valve,
A signal transmission member that transmits the in-cylinder pressure detected by the sensor as a detection signal;
The signal transmission member includes a first transmission unit connected to the sensor;
A second transmission part connected to the first transmission part and connected to a signal terminal for outputting a detection signal to the outside;
With
The connection portion between the first transmission portion and the second transmission portion has a concave connection portion formed on one side thereof, and a convex connection portion formed on the other side and inserted into the concave connection portion. A clearance is provided between the convex connection portion and the convex connection portion, and the concave connection portion and the convex connection portion are electrically connected by solder.

本発明によれば、燃焼室内の筒内圧を検出するセンサを有した筒内圧センサ付き燃料噴射弁において、センサで検出された筒内圧を検出信号として伝達する信号伝達部材を備え、センサに接続される第１伝達部と、第１伝達部に接続され、且つ、検出信号を外部へと出力する信号端子へ接続される第２伝達部とを有し、その一方に形成される凹状接続部と、他方に形成され凹状接続部へ挿入される凸状接続部とがクリアランスを介して設けられ、半田によって電気的に接続されている。   According to the present invention, a fuel injection valve with an in-cylinder pressure sensor having a sensor for detecting an in-cylinder pressure in a combustion chamber includes a signal transmission member that transmits the in-cylinder pressure detected by the sensor as a detection signal, and is connected to the sensor. A first transmission part, and a second connection part connected to the first transmission part and connected to a signal terminal for outputting a detection signal to the outside, and a concave connection part formed on one side thereof A convex connection part formed on the other side and inserted into the concave connection part is provided via a clearance, and is electrically connected by solder.

従って、第１伝達部と第２伝達部とを接続する際、凸状接続部を凹状接続部内へと挿入することで互いに位置決めされた状態で容易且つ確実に組み付けることができると共に、半田を加熱して溶融させる際に、第１及び第２伝達部が熱膨張して変形した場合でもクリアランスによって凸状接続部と凹状接続部との接触が好適に回避されるため、互いの接触による応力発生が抑制され、応力に起因した第１伝達部と第２伝達部との間における断線の発生を防止することができる。   Therefore, when connecting the first transmission part and the second transmission part, the convex connection part can be easily and reliably assembled in a state of being positioned with respect to each other by inserting the convex connection part into the concave connection part. When the first and second transfer parts are thermally expanded and deformed when melted, the contact between the convex connection part and the concave connection part is preferably avoided by the clearance. Is suppressed, and occurrence of disconnection between the first transmission portion and the second transmission portion due to stress can be prevented.

また、クリアランスを、信号伝達部材の延在方向に沿って設けるとよい。   Moreover, it is good to provide a clearance along the extension direction of a signal transmission member.

さらに、半田を、凸状接続部に設けられた収納部に設けることにより、凸状接続部と凹状接続部とを接続する際、予め収納部へ半田を収納しておくことで作業効率を向上させることが可能となる。   Furthermore, by providing solder in the storage part provided in the convex connection part, when connecting the convex connection part and the concave connection part, the work efficiency is improved by storing the solder in the storage part in advance. It becomes possible to make it.

本発明によれば、以下の効果が得られる。   According to the present invention, the following effects can be obtained.

すなわち、筒内圧センサ付き燃料噴射弁において、センサに接続される第１伝達部と、第１伝達部に接続され検出信号を外部へと出力する信号端子へ接続される第２伝達部とを有し、その一方に形成される凹状接続部と、他方に形成され凹状接続部へ挿入される凸状接続部とを設けることで、第１伝達部と第２伝達部とを接続する際、凸状接続部を凹状接続部内へと挿入することで容易且つ確実に接続することができる。また、凸状接続部と凹状接続部との間にクリアランスを設けることで半田によって互いを電気的に接続する際、加熱によって第１及び第２伝達部が熱膨張して変形した場合でもクリアランスによって凸状接続部と凹状接続部との接触を好適に回避できるため、接触による応力の発生が抑制され、応力に起因した第１伝達部と第２伝達部との間の断線の発生を防止することが可能となる。   That is, the fuel injection valve with an in-cylinder pressure sensor includes a first transmission unit connected to the sensor and a second transmission unit connected to the signal terminal that is connected to the first transmission unit and outputs a detection signal to the outside. When the first transmission part and the second transmission part are connected by providing a concave connection part formed on one side and a convex connection part formed on the other side and inserted into the concave connection part, The connection can be made easily and reliably by inserting the connection part into the concave connection part. In addition, when the first and second transmission parts are thermally expanded and deformed by heating, when clearance is provided between the convex connection part and the concave connection part to electrically connect each other with solder, the clearance may be used. Since the contact between the convex connection part and the concave connection part can be suitably avoided, the generation of stress due to the contact is suppressed, and the occurrence of disconnection between the first transmission part and the second transmission part due to the stress is prevented. It becomes possible.

本発明の実施の形態に係る筒内圧センサ付き燃料噴射弁の一部断面全体正面図である。It is a partial cross section front view of the fuel injection valve with a cylinder pressure sensor which concerns on embodiment of this invention. 図１の筒内圧センサ付き燃料噴射弁における第１及び第２接続部近傍を示す拡大断面図である。FIG. 3 is an enlarged cross-sectional view showing the vicinity of first and second connection portions in the fuel injection valve with an in-cylinder pressure sensor of FIG. 1.

本発明に係る筒内圧センサ付き燃料噴射弁について好適な実施の形態を挙げ、添付の図面を参照しながら以下詳細に説明する。図１において、参照符号１０は、本発明の実施の形態に係る筒内圧センサ付き燃料噴射弁を示す。   The fuel injection valve with an in-cylinder pressure sensor according to the present invention will be described in detail below with reference to the accompanying drawings by giving preferred embodiments. In FIG. 1, reference numeral 10 indicates a fuel injection valve with an in-cylinder pressure sensor according to an embodiment of the present invention.

この筒内圧センサ付き燃料噴射弁１０（以下、単に燃料噴射弁１０という）は、図１に示されるように、ハウジング１２と、該ハウジング１２の外周側に設けられる樹脂モールド部１４と、該ハウジング１２の基端に設けられ燃料の供給される燃料供給部１６と、前記ハウジング１２の先端に設けられる燃料噴射部１８と、前記燃料噴射部１８の先端に装着されるセンサ２０と、図示しない電子制御ユニット（ＥＣＵ）に接続された信号端子２２と前記センサ２０とを電気的に接続して出力信号を伝達する信号伝達部（信号伝達部材）２４とを含む。   As shown in FIG. 1, a fuel injection valve 10 with a cylinder pressure sensor (hereinafter simply referred to as a fuel injection valve 10) includes a housing 12, a resin mold portion 14 provided on the outer peripheral side of the housing 12, and the housing. 12, a fuel supply unit 16 that is supplied with fuel, a fuel injection unit 18 that is provided at the front end of the housing 12, a sensor 20 that is attached to the front end of the fuel injection unit 18, and an electronic device (not shown). A signal transmission unit (signal transmission member) 24 that electrically connects a signal terminal 22 connected to a control unit (ECU) and the sensor 20 to transmit an output signal is included.

なお、以下、燃料噴射弁１０における燃料供給部１６側を基端側（矢印Ａ方向）、燃料噴射部１８側を先端側（矢印Ｂ方向）として説明する。   Hereinafter, the fuel supply unit 16 side of the fuel injection valve 10 will be described as the base end side (arrow A direction), and the fuel injection unit 18 side will be described as the front end side (arrow B direction).

ハウジング１２は、例えば、燃料噴射弁１０を駆動させるソレノイド部として構成され、その中心に設けられる固定コア２６と、該固定コア２６の外周側に設けられコイル２８を保持するボビン３０と、前記ボビン３０のさらに先端外周側に設けられる円筒状のホルダ３２と、前記コイル２８の励磁作用下に変位する可動コア（図示せず）とを有している。   The housing 12 is configured as, for example, a solenoid unit that drives the fuel injection valve 10, and includes a fixed core 26 provided at the center thereof, a bobbin 30 provided on the outer peripheral side of the fixed core 26 and holding a coil 28, and the bobbin. 30 has a cylindrical holder 32 provided on the outer peripheral side of the tip, and a movable core (not shown) that is displaced under the exciting action of the coil 28.

固定コア２６は、ホルダ３２の基端に対してさらにハウジング１２の基端側（矢印Ａ方向）へと延在し、後述する樹脂モールド部１４の中心に配置されると共に、その外周面には後述する樹脂モールド部１４の係合される環状の第１溝部３４が形成される。また、固定コア２６の基端側には燃料供給部１６が設けられている。   The fixed core 26 further extends toward the base end side (arrow A direction) of the housing 12 with respect to the base end of the holder 32, and is disposed at the center of the resin mold portion 14 to be described later. An annular first groove portion 34 to be engaged with a resin mold portion 14 to be described later is formed. A fuel supply unit 16 is provided on the base end side of the fixed core 26.

ボビン３０は、例えば、円筒状に形成され、固定コア２６とホルダ３２との間に設けられ、その基端側（矢印Ａ方向）には増幅部材（第２伝達部）４８に係合される係合ピン３６が形成される。また、ボビン３０の外周側には、半径内方向に窪んだ部位にコイル２８が巻回され、該コイル２８の外周側には後述する信号伝達部２４を構成する第２信号伝達部材（第２伝達部）６８が保持される。なお、係合ピン３６は、円筒状のボビン３０の周方向において後述する樹脂モールド部１４のカプラ部４４側となる位置に設けられる。   The bobbin 30 is formed, for example, in a cylindrical shape, and is provided between the fixed core 26 and the holder 32, and is engaged with an amplifying member (second transmission portion) 48 on the base end side (arrow A direction). An engagement pin 36 is formed. Further, a coil 28 is wound around the outer peripheral side of the bobbin 30 in a portion recessed in the radial inward direction, and a second signal transmission member (second second) constituting a signal transmission unit 24 described later is formed on the outer peripheral side of the coil 28. The transmission unit) 68 is held. In addition, the engaging pin 36 is provided in the position which becomes the coupler part 44 side of the resin mold part 14 mentioned later in the circumferential direction of the cylindrical bobbin 30.

コイル２８は、その端部がボビン３０の基端側（矢印Ａ方向）へと延在し、後述する樹脂モールド部１４に内蔵された一対の駆動端子３８の端部へとそれぞれ接続される。そして、図示しないコネクタから駆動端子３８を通じてコイル２８へと通電されることで励磁して磁力が生じる。これにより、ハウジング１２においてコイル２８の励磁作用下に可動コアがボビン３０の内部で変位し、燃料噴射部１８に設けられた弁体（図示せず）を吸引して開弁させる。   The ends of the coils 28 extend toward the base end side (in the direction of arrow A) of the bobbin 30 and are respectively connected to the ends of a pair of drive terminals 38 incorporated in the resin mold portion 14 described later. The coil 28 is energized from a connector (not shown) to the coil 28 through the drive terminal 38 to generate magnetism. As a result, the movable core is displaced inside the bobbin 30 under the exciting action of the coil 28 in the housing 12, and a valve body (not shown) provided in the fuel injection unit 18 is sucked and opened.

また、ホルダ３２の基端外周面には、半径内方向に窪んだ環状の第２溝部４０が形成され、後述する樹脂モールド部１４が係合される。   An annular second groove 40 that is recessed radially inward is formed on the outer peripheral surface of the proximal end of the holder 32, and a resin mold portion 14 to be described later is engaged therewith.

樹脂モールド部１４は、例えば、樹脂製材料から成形によってハウジング１２の外周側に形成され、円筒状に形成された本体部４２と、該本体部４２の基端から側方に突出したカプラ部４４と、前記本体部４２とカプラ部４４とを接続する接続部４６とを有している。そして、樹脂製材料から樹脂モールド部１４を成形することで、本体部４２の中心に設けられた固定コア２６の第１溝部３４と、該本体部４２の先端側に設けられたホルダ３２の第２溝部４０へそれぞれ溶融した樹脂製材料が入り込み、ハウジング１２が前記樹脂モールド部１４の中央及び先端に対して固定される。   The resin mold part 14 is formed on the outer peripheral side of the housing 12 by molding from a resin material, for example, and a main body part 42 formed in a cylindrical shape, and a coupler part 44 projecting sideways from the base end of the main body part 42. And a connecting portion 46 for connecting the main body portion 42 and the coupler portion 44. Then, by molding the resin mold portion 14 from a resin material, the first groove portion 34 of the fixed core 26 provided at the center of the main body portion 42 and the first of the holder 32 provided at the front end side of the main body portion 42. The melted resin material enters the two groove portions 40 respectively, and the housing 12 is fixed to the center and the tip of the resin mold portion 14.

カプラ部４４は、例えば、断面長方形状に形成され本体部４２の軸方向（矢印Ａ、Ｂ方向）に対して所定角度だけ傾斜するように斜め上方に向かって突出している。また、カプラ部４４は、その端部が開口して内部に空間を有し、後述する増幅部材４８の信号端子２２及び電源端子５２と、コイル２８へ通電を行うための一対の駆動端子３８とがそれぞれ露出するように設けられる。   The coupler portion 44 is formed, for example, in a rectangular cross section and protrudes obliquely upward so as to be inclined by a predetermined angle with respect to the axial direction (arrow A, B direction) of the main body portion 42. The coupler portion 44 has an open end and a space inside. The signal terminal 22 and the power supply terminal 52 of the amplification member 48 to be described later, and a pair of drive terminals 38 for energizing the coil 28. Are provided so as to be exposed.

この増幅部材４８は、例えば、樹脂モールド部１４の内部に設けられ、断面矩形状の基板５０と、該基板５０に対して電気的に接続された信号端子２２及び電源端子５２と、前記基板５０の全体を覆うように形成された封止部５４とを含み、センサ２０で検出された検出値を増幅させ前記信号端子２２から外部へと出力する目的で設けられる。   The amplifying member 48 is provided, for example, inside the resin mold portion 14, and has a rectangular cross-section substrate 50, the signal terminal 22 and the power supply terminal 52 electrically connected to the substrate 50, and the substrate 50. And a sealing portion 54 formed so as to cover the entirety of the sensor, and is provided for the purpose of amplifying the detection value detected by the sensor 20 and outputting the detected value from the signal terminal 22 to the outside.

基板５０の一端部には、信号端子２２及び電源端子５２が半田等によって電気的に接続され、一方、前記基板５０の他端部側には、後述する信号伝達部２４の第２信号伝達部材６８と接続される接続孔（図示せず）が形成されている。   The signal terminal 22 and the power terminal 52 are electrically connected to one end of the substrate 50 by solder or the like, while the second signal transmission member of the signal transmission unit 24 described later is connected to the other end of the substrate 50. A connection hole (not shown) connected to 68 is formed.

そして、増幅部材４８は、樹脂モールド部１４を成形する際、封止部５４の係合孔にボビン３０の係合ピン３６を挿入して位置決めされた状態で一体的にモールドされると同時に、前記電源端子５２の接続された端部とは反対側の端部が信号伝達部２４と接続される。   When the amplification member 48 is molded, the resin mold portion 14 is molded integrally with the engagement pin 36 of the bobbin 30 inserted into the engagement hole of the sealing portion 54 and positioned. The end of the power supply terminal 52 opposite to the connected end is connected to the signal transmission unit 24.

このカプラ部４４には、図示しないコネクタが接続されることで、電源端子５２を通じて増幅部材４８及びセンサ２０へと電源が供給され、信号端子２２を通じてセンサ２０で検出された検出値が電気信号として外部へ出力されると共に、駆動端子３８からハウジング１２のコイル２８へと通電がなされる。   When a connector (not shown) is connected to the coupler unit 44, power is supplied to the amplifying member 48 and the sensor 20 through the power terminal 52, and the detection value detected by the sensor 20 through the signal terminal 22 is an electrical signal. In addition to being output to the outside, power is supplied from the drive terminal 38 to the coil 28 of the housing 12.

燃料供給部１６は、図１に示されるように、例えば、固定コア２６の内部に燃料の供給される供給通路（図示せず）を有し、燃料噴射弁１０の基端側（矢印Ａ方向）に開口した供給通路の端部に図示しない燃料配管が接続される。そして、燃料配管を通じて供給された燃料が供給通路を通じて先端側に設けられた燃料噴射部１８側（矢印Ｂ方向）へと供給される。   As shown in FIG. 1, the fuel supply unit 16 has, for example, a supply passage (not shown) through which fuel is supplied inside the fixed core 26, and the base end side (in the direction of arrow A) of the fuel injection valve 10. A fuel pipe (not shown) is connected to the end of the supply passage that is open at (). Then, the fuel supplied through the fuel pipe is supplied to the fuel injection unit 18 side (in the direction of arrow B) provided on the tip side through the supply passage.

燃料噴射部１８は、ハウジング１２の先端に連結されるバルブハウジング６０と、該バルブハウジング６０の先端に内蔵された弁体（図示せず）とを備える。そして、バルブハウジング６０の内部には燃料供給部１６から燃料が供給され、弁体がコイル２８の励磁作用下に基端側（矢印Ａ方向）へと移動することにより、先端から燃料が所定圧力で燃焼室内へと噴射される。   The fuel injection unit 18 includes a valve housing 60 connected to the tip of the housing 12 and a valve body (not shown) built in the tip of the valve housing 60. The fuel is supplied from the fuel supply unit 16 to the inside of the valve housing 60, and the valve body moves toward the base end side (in the direction of arrow A) under the excitation action of the coil 28. Is injected into the combustion chamber.

このバルブハウジング６０は、例えば、金属製材料から形成され、ハウジング１２の先端を閉塞する第１フランジ部６２と、該第１フランジ部６２から先端側（矢印Ｂ方向）に向かって一直線上に延在する筒部６４とを有し、前記筒部６４の先端には、その外周側に円筒状のセンサ２０が圧入され嵌合される。   The valve housing 60 is formed of, for example, a metal material, and extends in a straight line from the first flange portion 62 toward the distal end side (in the direction of arrow B). The first flange portion 62 closes the distal end of the housing 12. The cylindrical sensor 20 is press-fitted and fitted to the outer peripheral side of the end of the cylindrical portion 64.

センサ２０は、例えば、その内部に圧電素子（図示せず）を備え、該圧電素子に接続された接続端子が基端側（矢印Ａ方向）で露出している。また、センサ２０の外周面には、後述するカバー部材８２の保持部８０が当接する。そして、センサ２０は、例えば、その先端内周側が前記バルブハウジング６０に対して全周溶接によって結合される。   The sensor 20 includes, for example, a piezoelectric element (not shown) therein, and a connection terminal connected to the piezoelectric element is exposed on the base end side (arrow A direction). Further, a holding portion 80 of a cover member 82 to be described later contacts the outer peripheral surface of the sensor 20. For example, the inner peripheral side of the tip of the sensor 20 is coupled to the valve housing 60 by welding all around.

信号伝達部２４は、バルブハウジング６０の外周側に設けられセンサ２０に接続された第１信号伝達部材（第１伝達部）６６と、ハウジング１２のホルダ３２に収納され、前記第１信号伝達部材６６と信号端子２２とを接続する第２信号伝達部材６８とを含む。   The signal transmission unit 24 is housed in a first signal transmission member (first transmission unit) 66 provided on the outer peripheral side of the valve housing 60 and connected to the sensor 20, and a holder 32 of the housing 12. 66 and a second signal transmission member 68 that connects the signal terminal 22.

第１信号伝達部材６６は、例えば、樹脂製材料から円筒状に形成され、バルブハウジング６０における筒部６４の外周側に設けられる絶縁体７０と、前記絶縁体７０の内部に設けられる第１導電層７２とを有する。そして、第１導電層７２は、例えば、半田等によってセンサ２０の接続端子に対して電気的に接続される。   The first signal transmission member 66 is formed, for example, in a cylindrical shape from a resin material, and the insulator 70 provided on the outer peripheral side of the cylindrical portion 64 in the valve housing 60 and the first conductivity provided in the insulator 70. Layer 72. The first conductive layer 72 is electrically connected to the connection terminal of the sensor 20 by, for example, solder.

絶縁体７０は、例えば、耐熱性樹脂等の樹脂製材料から形成され、その基端側には、バルブハウジング６０の形状に対応して第１フランジ部６２を覆うように拡径した第２フランジ部７４が形成される。   The insulator 70 is formed of a resin material such as a heat-resistant resin, for example, and has a second flange whose diameter is increased on the base end side so as to cover the first flange portion 62 corresponding to the shape of the valve housing 60. A portion 74 is formed.

この第２フランジ部７４は、図１及び図２に示されるように、第１フランジ部６２の下方に配置され、第２信号伝達部材６８側（矢印Ａ方向）に向かって凸状に形成された第１接続部（凸状接続部）７６を有する。第１接続部７６は、第２フランジ部７４に対して略直交するように所定高さだけ突出した円筒状に形成され、その内部には半田７８の装填可能な収納部７６ａが形成される。   As shown in FIGS. 1 and 2, the second flange portion 74 is disposed below the first flange portion 62 and is formed in a convex shape toward the second signal transmission member 68 side (in the direction of arrow A). The first connection portion (convex connection portion) 76 is provided. The first connecting portion 76 is formed in a cylindrical shape protruding by a predetermined height so as to be substantially orthogonal to the second flange portion 74, and a storage portion 76 a into which a solder 78 can be loaded is formed.

また、絶縁体７０の径方向に沿った厚さ中央には、例えば、メッキ層からなる第１導電層７２が形成され、該第１導電層７２は、略一定の厚さで前記絶縁体７０に沿って円筒状に形成される。この絶縁体７０の先端は、バルブハウジング６０の筒部６４と共にセンサ２０の内部に圧入されると共に、基端が前記第１接続部７６の内周面に露出している。   In addition, a first conductive layer 72 made of, for example, a plating layer is formed at the center of the thickness along the radial direction of the insulator 70, and the first conductive layer 72 has a substantially constant thickness. Is formed in a cylindrical shape. The distal end of the insulator 70 is press-fitted into the sensor 20 together with the cylindrical portion 64 of the valve housing 60, and the proximal end is exposed on the inner peripheral surface of the first connection portion 76.

一方、絶縁体７０の外周側には、図１に示されるように、例えば、金属製材料から円筒状に形成されたカバー部材８２が前記絶縁体７０を覆うように装着され、前記カバー部材８２は、バルブハウジング６０の形状に対応して筒部６４及び第１フランジ部６２を覆うように基端側（矢印Ａ方向）が拡径して形成される。このカバー部材８２の先端には、センサ２０の基端側の外周面を保持する保持部８０が形成される。   On the other hand, as shown in FIG. 1, for example, a cover member 82 formed in a cylindrical shape from a metal material is attached to the outer peripheral side of the insulator 70 so as to cover the insulator 70, and the cover member 82. Corresponds to the shape of the valve housing 60 and is formed by expanding the base end side (arrow A direction) so as to cover the cylindrical portion 64 and the first flange portion 62. A holding portion 80 that holds the outer peripheral surface of the base end side of the sensor 20 is formed at the distal end of the cover member 82.

第２信号伝達部材６８は、図１及び図２に示されるように、例えば、樹脂製材料から形成され、軸方向（矢印Ａ、Ｂ方向）に沿って所定長さを有した板形状からなり、その軸方向に沿った略中央部近傍がボビン３０に対して固定される。   As shown in FIGS. 1 and 2, the second signal transmission member 68 is formed of, for example, a resin material and has a plate shape having a predetermined length along the axial direction (arrows A and B directions). The vicinity of the substantially central portion along the axial direction is fixed to the bobbin 30.

また、第２信号伝達部材６８の内部には通電可能な材料から形成された第２導電層８４が形成される。第２導電層８４は、例えば、メッキ層から形成され、略一定の厚さで第２信号伝達部材６８の軸方向（矢印Ａ、Ｂ方向）に沿って先端から基端まで延在している。   A second conductive layer 84 made of a material that can be energized is formed inside the second signal transmission member 68. The second conductive layer 84 is formed of, for example, a plating layer, and extends from the distal end to the proximal end along the axial direction (arrow A and B directions) of the second signal transmission member 68 with a substantially constant thickness. .

この第２信号伝達部材６８の先端には、図２に示されるように、軸線と直交する半径内方向に突出した第２接続部（凹状接続部）８６が形成され、該第２接続部８６が第１信号伝達部材６６の基端に臨むように形成されると共に、前記第１信号伝達部材６６の第１接続部７６が挿入可能な凹部８８を有している。凹部８８は、第１信号伝達部材６６側（矢印Ｂ方向）に向かって開口し、その内周面に第２導電層８４の端部が露出すると共に、その内部に第１接続部７６が挿入された際、軸方向（矢印Ａ、Ｂ方向）に沿った所定間隔のクリアランスＣを有している。   As shown in FIG. 2, a second connection portion (concave connection portion) 86 that protrudes in a radially inward direction orthogonal to the axis is formed at the tip of the second signal transmission member 68, and the second connection portion 86. Is formed so as to face the proximal end of the first signal transmission member 66, and has a recess 88 into which the first connection portion 76 of the first signal transmission member 66 can be inserted. The recess 88 opens toward the first signal transmission member 66 (in the direction of arrow B), the end of the second conductive layer 84 is exposed on the inner peripheral surface thereof, and the first connection portion 76 is inserted therein. When it is done, it has a clearance C of a predetermined interval along the axial direction (arrow A, B direction).

すなわち、凹部８８における基端側の内壁面と第１接続部７６の基端部とが接触することなく互いに離間するように設けられる。   In other words, the inner wall surface on the proximal end side of the recess 88 and the proximal end portion of the first connection portion 76 are provided so as to be separated from each other without contact.

そして、この第２接続部８６に第１信号伝達部材６６の第１接続部７６が挿入され、該凹部８８内に露呈した第２導電層８４と前記第１信号伝達部材６６の第１導電層７２とが半田７８によって電気的に接続される。   Then, the first connection portion 76 of the first signal transmission member 66 is inserted into the second connection portion 86, and the second conductive layer 84 exposed in the recess 88 and the first conductive layer of the first signal transmission member 66. 72 is electrically connected by solder 78.

一方、第２信号伝達部材６８の基端には、図１に示されるように、先端側に対して縮径した小径な第３接続部９０を有し、前記第３接続部９０には、その外周面に沿って第２導電層８４の一部が環状に露出している。   On the other hand, as shown in FIG. 1, the proximal end of the second signal transmission member 68 has a third connecting portion 90 having a small diameter reduced with respect to the distal end side. A part of the second conductive layer 84 is annularly exposed along the outer peripheral surface.

そして、増幅部材４８における基板５０の接続孔（図示せず）に第３接続部９０が挿入され半田等によって電気的に接続されることにより、第２信号伝達部材６８が増幅部材４８と電気的に接続される。   The third connection portion 90 is inserted into a connection hole (not shown) of the substrate 50 in the amplification member 48 and is electrically connected by solder or the like, so that the second signal transmission member 68 is electrically connected to the amplification member 48. Connected to.

これにより、第１及び第２信号伝達部材６６、６８を介してセンサ２０と信号端子２２及び電源端子５２とが互いに電気的に接続された状態となる。   Thereby, the sensor 20, the signal terminal 22, and the power supply terminal 52 are electrically connected to each other via the first and second signal transmission members 66 and 68.

本発明の実施の形態に係る筒内圧センサ付き燃料噴射弁１０は、基本的には以上のように構成されるものであり、次に信号伝達部２４を組み付ける場合について説明する。   The in-cylinder pressure sensor-equipped fuel injection valve 10 according to the embodiment of the present invention is basically configured as described above. Next, a case where the signal transmission unit 24 is assembled will be described.

先ず、信号伝達部２４を構成する第２信号伝達部材６８の第２接続部８６に対して第１信号伝達部材６６の第１接続部７６を挿入すると共に、前記第２信号伝達部材６８の第３接続部９０を増幅部材４８の接続孔へと挿入する。なお、この場合、第１接続部７６の収納部７６ａには予め半田７８が装填されている。   First, the first connection part 76 of the first signal transmission member 66 is inserted into the second connection part 86 of the second signal transmission member 68 constituting the signal transmission part 24, and the second signal transmission member 68 has the second connection part 86. The three connection portions 90 are inserted into the connection holes of the amplification member 48. In this case, the solder 78 is loaded in the storage portion 76a of the first connection portion 76 in advance.

この第２接続部８６は、第１信号伝達部材６６側（矢印Ｂ方向）に向かって開口した凹部８８を有し、一方、第１接続部７６は、第２信号伝達部材６８側（矢印Ａ方向）に向かって凸状に形成されているため、凸状の第１接続部７６を凹状の第２接続部８６へと挿入することで容易且つ確実に接続準備状態とすることができる。   The second connection portion 86 has a recess 88 that opens toward the first signal transmission member 66 side (in the direction of arrow B), while the first connection portion 76 is connected to the second signal transmission member 68 side (in the direction of arrow A). Since the convex first connection portion 76 is inserted into the concave second connection portion 86, the connection ready state can be easily and reliably obtained.

次に、第１信号伝達部材６６、第２信号伝達部材６８及び増幅部材４８が互いに挿入され仮組みされた状態で、例えば、図示しない加熱装置によって信号伝達部２４の外側から加熱することで、半田７８が溶融して第１接続部７６の第１導電層７２と第２接続部８６の第２導電層８４とが電気的に接続されると共に、第３接続部９０の第２導電層８４と増幅部材４８の基板５０とが電気的に接続される。   Next, in a state where the first signal transmission member 66, the second signal transmission member 68, and the amplification member 48 are inserted and temporarily assembled, for example, by heating from the outside of the signal transmission unit 24 by a heating device (not shown), The solder 78 is melted to electrically connect the first conductive layer 72 of the first connection portion 76 and the second conductive layer 84 of the second connection portion 86, and the second conductive layer 84 of the third connection portion 90. And the substrate 50 of the amplifying member 48 are electrically connected.

この際、第１及び第２信号伝達部材６６、６８が加熱装置（図示せず）の加熱作用下に熱膨張した場合でも、その第１接続部７６と第２接続部８６との間に軸方向に沿ったクリアランスＣが設けられているため、該熱膨張によって互いに接近する方向に変形した場合でも接触することが回避される。そのため、第１信号伝達部材６６と第２信号伝達部材６８とが互いに接触した際に懸念される応力の発生が抑制される。   At this time, even when the first and second signal transmission members 66 and 68 are thermally expanded under the heating action of a heating device (not shown), the shaft is interposed between the first connection portion 76 and the second connection portion 86. Since the clearance C along the direction is provided, contact is avoided even when the thermal expansion causes deformation in directions approaching each other. Therefore, generation | occurrence | production of the stress which is anxious when the 1st signal transmission member 66 and the 2nd signal transmission member 68 contact each other is suppressed.

なお、このクリアランスＣは、例えば、加熱装置によって与えられる熱量、該熱量で加熱された際の第１及び第２信号伝達部材６６、６８の熱膨張量に基づき、互いに接触することがない軸方向への距離で予め設定されている。   The clearance C is, for example, based on the amount of heat given by the heating device, and the amount of thermal expansion of the first and second signal transmission members 66 and 68 when heated by the amount of heat, so that they do not contact each other. Is preset by the distance to.

次に、上述したように信号伝達部２４の組み付けられた燃料噴射弁１０の動作について説明する。   Next, the operation of the fuel injection valve 10 with the signal transmission unit 24 assembled as described above will be described.

図示しない内燃機関の運転中において、電子制御ユニットからの制御信号によって燃料噴射弁１０の駆動端子３８からコイル２８へ通電がなされ、前記コイル２８が励磁することで燃料噴射部１８の弁体が開弁し、燃料供給部１６の供給通路に供給された高圧の燃料が燃料噴射部１８を介して前記内燃機関の燃焼室内へと直接噴射される。この際、センサ２０は、燃焼室内の圧力（筒内圧）が付与されることで、圧電素子が前記圧力に応じた電圧を発生して出力信号として出力する。   During operation of the internal combustion engine (not shown), the coil 28 is energized from the drive terminal 38 of the fuel injection valve 10 by a control signal from the electronic control unit, and the valve body of the fuel injection unit 18 is opened by exciting the coil 28. The high-pressure fuel supplied to the supply passage of the fuel supply unit 16 is directly injected into the combustion chamber of the internal combustion engine via the fuel injection unit 18. At this time, the sensor 20 is applied with a pressure (in-cylinder pressure) in the combustion chamber, so that the piezoelectric element generates a voltage corresponding to the pressure and outputs it as an output signal.

この検出信号は、センサ２０、第１信号伝達部材６６、第２信号伝達部材６８を経て増幅部材４８へと出力され、該増幅部材４８において前記検出信号が増幅された後、信号端子２２を介して電子制御ユニットへと出力される。   This detection signal is output to the amplification member 48 through the sensor 20, the first signal transmission member 66, and the second signal transmission member 68. After the detection signal is amplified in the amplification member 48, the detection signal is passed through the signal terminal 22. Output to the electronic control unit.

そして、例えば、電子制御ユニットにおいて、増幅された出力信号から燃焼室の圧力が算出され、該圧力に基づいた燃焼制御等に利用される。   For example, in the electronic control unit, the pressure in the combustion chamber is calculated from the amplified output signal, and is used for combustion control based on the pressure.

以上のように、本実施の形態では、燃料噴射弁１０における信号伝達部２４において、センサ２０に接続される第１信号伝達部材６６と、増幅部材４８に接続される第２信号伝達部材６８とを有し、前記第１信号伝達部材６６の基端に凸状に形成された第１接続部７６を設け、前記第２信号伝達部材６８の先端に設けられた第２接続部８６の凹部８８へと挿入している。この際、第１接続部７６と第２接続部８６との間には軸方向に沿った所定間隔のクリアランスＣが設けられている。   As described above, in the present embodiment, in the signal transmission unit 24 in the fuel injection valve 10, the first signal transmission member 66 connected to the sensor 20 and the second signal transmission member 68 connected to the amplification member 48. A first connecting portion 76 formed in a convex shape at the base end of the first signal transmitting member 66, and a concave portion 88 of the second connecting portion 86 provided at the distal end of the second signal transmitting member 68. It is inserted into. At this time, a clearance C having a predetermined interval along the axial direction is provided between the first connection portion 76 and the second connection portion 86.

従って、第１信号伝達部材６６と第２信号伝達部材６８とを接続する際、凸状の第１接続部７６を凹状の第２接続部８６の凹部８８内へと挿入することで互いに位置決めされた状態とし、第１信号伝達部材６６と第２信号伝達部材６８とを容易且つ確実に組み付けることができる。また、例えば、加熱装置によって第１接続部７６に収納された半田７８を溶融させる際に前記第１及び第２信号伝達部材６６、６８が熱膨張して変形した場合でも、軸方向に沿って設けられたクリアランスＣによって前記第１接続部７６と第２接続部８６とが接触してしまうことが好適に回避される。   Therefore, when the first signal transmission member 66 and the second signal transmission member 68 are connected, the convex first connecting portion 76 is inserted into the concave portion 88 of the concave second connecting portion 86 to be positioned with respect to each other. Thus, the first signal transmission member 66 and the second signal transmission member 68 can be easily and reliably assembled. Further, for example, even when the first and second signal transmission members 66 and 68 are deformed due to thermal expansion when the solder 78 accommodated in the first connection portion 76 is melted by the heating device, the axial direction is maintained. It is preferably avoided that the first connecting portion 76 and the second connecting portion 86 come into contact with each other due to the provided clearance C.

その結果、信号伝達部２４を構成する第１信号伝達部材６６と第２信号伝達部材６８とを接続する際、互いの接触による応力の発生が抑制され、前記応力に起因した第１信号伝達部材６６と第２信号伝達部材６８との間の断線が防止される。   As a result, when the first signal transmission member 66 and the second signal transmission member 68 constituting the signal transmission unit 24 are connected, generation of stress due to mutual contact is suppressed, and the first signal transmission member due to the stress is suppressed. Disconnection between 66 and the second signal transmission member 68 is prevented.

また、信号伝達部２４を、第１及び第２信号伝達部材６６、６８という２つの部材から構成しているため、燃料噴射弁１０の内部へ好適に収納して接続することが可能となる。   Moreover, since the signal transmission part 24 is comprised from two members called the 1st and 2nd signal transmission members 66 and 68, it becomes possible to accommodate and connect inside the fuel injection valve 10 suitably.

さらに、第１接続部７６の内部に半田７８を収納するための収納部７６ａを設けることで、前記第１接続部７６と第２接続部８６とを接続する際、予め前記収納部７６ａへ半田７８を収納しておくことが可能となり作業効率を向上させることが可能となる。   Further, by providing a storage portion 76a for storing the solder 78 inside the first connection portion 76, when connecting the first connection portion 76 and the second connection portion 86, solder is previously applied to the storage portion 76a. 78 can be stored and work efficiency can be improved.

なお、本発明に係る筒内圧センサ付き燃料噴射弁は、上述の実施の形態に限らず、本発明の要旨を逸脱することなく、種々の構成を採り得ることはもちろんである。   In addition, the fuel injection valve with an in-cylinder pressure sensor according to the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.

１０…筒内圧センサ付き燃料噴射弁 １２…ハウジング
１４…樹脂モールド部 １６…燃料供給部
１８…燃料噴射部 ２０…センサ
２２…信号端子 ２４…信号伝達部
４８…増幅部材 ６６…第１信号伝達部材
６８…第２信号伝達部材 ７０…絶縁体
７２…第１導電層 ７６…第１接続部
７６ａ…収納部 ７８…半田
８４…第２導電層 ８６…第２接続部
８８…凹部 DESCRIPTION OF SYMBOLS 10 ... Fuel injection valve with in-cylinder pressure sensor 12 ... Housing 14 ... Resin mold part 16 ... Fuel supply part 18 ... Fuel injection part 20 ... Sensor 22 ... Signal terminal 24 ... Signal transmission part 48 ... Amplifying member 66 ... 1st signal transmission member 68 ... 2nd signal transmission member 70 ... Insulator 72 ... 1st conductive layer 76 ... 1st connection part 76a ... Storage part 78 ... Solder 84 ... 2nd conductive layer 86 ... 2nd connection part 88 ... Recessed part

Claims (3)

内燃機関の燃焼室に対して燃料を直接噴射する燃料噴射弁の端部に燃焼室内の筒内圧を検出するセンサを有した筒内圧センサ付き燃料噴射弁において、
前記センサで検出された前記筒内圧を検出信号として伝達する信号伝達部材を有し、
前記信号伝達部材は、前記センサに接続される第１伝達部と、
前記第１伝達部に接続されると共に、前記検出信号を外部へと出力する信号端子へ接続される第２伝達部と、
を備え、
前記第１伝達部と前記第２伝達部との接続部は、その一方に形成される凹状接続部と、他方に形成され該凹状接続部内に挿入される凸状接続部とを有し、前記凹状接続部と前記凸状接続部との間にクリアランスが設けられると共に、前記凹状接続部と前記凸状接続部とが半田によって電気的に接続されることを特徴とする筒内圧センサ付き燃料噴射弁。 In a fuel injection valve with an in-cylinder pressure sensor having a sensor for detecting the in-cylinder pressure in the combustion chamber at the end of the fuel injection valve that directly injects fuel into the combustion chamber of the internal combustion engine,
A signal transmission member that transmits the in-cylinder pressure detected by the sensor as a detection signal;
The signal transmission member includes a first transmission unit connected to the sensor;
A second transmission unit connected to the first transmission unit and connected to a signal terminal for outputting the detection signal to the outside;
With
The connection part between the first transmission part and the second transmission part has a concave connection part formed on one side thereof, and a convex connection part formed on the other side and inserted into the concave connection part, A fuel injection with an in-cylinder pressure sensor, wherein a clearance is provided between the concave connection portion and the convex connection portion, and the concave connection portion and the convex connection portion are electrically connected by solder. valve. 請求項１記載の筒内圧センサ付き燃料噴射弁において、
前記クリアランスは、前記信号伝達部材の延在方向に沿って設けられることを特徴とする筒内圧センサ付き燃料噴射弁。 The fuel injection valve with an in-cylinder pressure sensor according to claim 1,
The fuel injection valve with an in-cylinder pressure sensor, wherein the clearance is provided along an extending direction of the signal transmission member. 請求項１又は２記載の筒内圧センサ付き燃料噴射弁において、
前記半田は、前記凸状接続部に設けられた収納部に設けられることを特徴とする筒内圧センサ付き燃料噴射弁。 The fuel injection valve with an in-cylinder pressure sensor according to claim 1 or 2,
The fuel injection valve with an in-cylinder pressure sensor, wherein the solder is provided in a storage portion provided in the convex connection portion.
JP2015008437A 2015-01-20 2015-01-20 Fuel injection valve with cylinder pressure sensor Pending JP2016133070A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015008437A JP2016133070A (en) 2015-01-20 2015-01-20 Fuel injection valve with cylinder pressure sensor
DE102016200572.3A DE102016200572A1 (en) 2015-01-20 2016-01-18 Fuel injection valve with cylinder internal pressure sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015008437A JP2016133070A (en) 2015-01-20 2015-01-20 Fuel injection valve with cylinder pressure sensor

Publications (1)

Publication Number Publication Date
JP2016133070A true JP2016133070A (en) 2016-07-25

Family

ID=56293926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015008437A Pending JP2016133070A (en) 2015-01-20 2015-01-20 Fuel injection valve with cylinder pressure sensor

Country Status (2)

Country Link
JP (1) JP2016133070A (en)
DE (1) DE102016200572A1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3809919B2 (en) 1995-06-09 2006-08-16 株式会社日立製作所 Cylinder internal pressure detector

Also Published As

Publication number Publication date
DE102016200572A1 (en) 2016-07-21

Similar Documents

Publication Publication Date Title
JP6503190B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP5819220B2 (en) Fuel injection valve with in-cylinder pressure sensor
US9683742B2 (en) Pressure sensor integrated glow plug
JP2016133068A5 (en)
JP6431385B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP2016133067A (en) Fuel injection valve with in-cylinder pressure sensor
US10012194B2 (en) Fuel injection valve with cylinder internal pressure sensor
JP2016133070A (en) Fuel injection valve with cylinder pressure sensor
JP2016133066A (en) Fuel injection valve with cylinder pressure sensor
JP6027423B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP6002565B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP2016133069A (en) Fuel injection valve with cylinder pressure sensor
JP5969373B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP6722538B2 (en) Fuel injection valve with cylinder pressure sensor
JP6096495B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP6017293B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP2016133071A (en) Fuel injection valve with cylinder pressure sensor
JP5932401B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP5878815B2 (en) Glow plug and manufacturing method thereof
JP2014118827A (en) Fuel injection valve with in-cylinder pressure sensor
JP2018017138A (en) Fuel injection valve with cylinder pressure sensor, and its manufacturing method
JP2007085577A (en) Glow plug with combustion pressure sensor
JP6008087B2 (en) Fuel injection valve with in-cylinder pressure sensor
JP6270598B2 (en) Fuel injection device
JP5996410B2 (en) Fuel injection valve with in-cylinder pressure sensor