JPH0336424A - Sheathed glow plug - Google Patents
Sheathed glow plugInfo
- Publication number
- JPH0336424A JPH0336424A JP17154189A JP17154189A JPH0336424A JP H0336424 A JPH0336424 A JP H0336424A JP 17154189 A JP17154189 A JP 17154189A JP 17154189 A JP17154189 A JP 17154189A JP H0336424 A JPH0336424 A JP H0336424A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heat
- metal tube
- resistant metal
- metal
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 73
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000005485 electric heating Methods 0.000 claims abstract description 6
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000010292 electrical insulation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 229910001338 liquidmetal Inorganic materials 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用骨Ｆｆ１
本発明は、ディーゼルエンジンに用いられるシーズグロ
ープラグに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial use bone Ff1 The present invention relates to a sheathed glow plug used in a diesel engine.
［従来の技術］
従来のシーズグロープラグは、低炭素鋼で形成された筒
状の主体金具と、該主体金具に挿着されるステンレスチ
ューブと、該チューブおよび主体金具に挿設される中心
電極と、該中心電極の先端とチューブの内底との間に接
続される鉄クロム線巻抵抗線と、チューブ内に充填され
るマグネシアとを備えてなる。[Prior Art] A conventional sheathed glow plug includes a cylindrical metal shell made of low carbon steel, a stainless steel tube inserted into the metal shell, and a center electrode inserted into the tube and the metal shell. , an iron-chromium wire-wound resistance wire connected between the tip of the center electrode and the inner bottom of the tube, and magnesia filled in the tube.
［発明が解決しようとする課題］
しかるに、従来のシーズグロープラグは、チューブが発
熱しても周囲に熱が伝わり難く、燃料を含んだ周りの空
気の温度が墳火点に達するまでの時間が長くかかり、完
爆までの時間が長いという欠点があった。[Problem to be solved by the invention] However, in conventional sheathed glow plugs, even if the tube generates heat, the heat is difficult to transfer to the surrounding area, and it takes a long time for the temperature of the surrounding air containing fuel to reach the firing point. The drawback was that it took a long time and it took a long time to complete the explosion.
本発明の目的は、燃料への着火性に優れ、エンジン完爆
までの時間が短縮できるシーズグロープラグの提供にあ
る。An object of the present invention is to provide a sheathed glow plug that has excellent fuel ignitability and can shorten the time required for complete engine explosion.
［課題を解決するための手段］
上記目的を達成するため、本発明は、金属製の筒状主体
金具と、該筒状主体金具内に先端部を突出して装着され
る耐熱金属チューブと、該耐熱金属チューブおよび筒状
主体金具に同軸的かつ電気絶縁を保って配設される中心
電極と、該中心電極の先端と前記耐熱金属チューブの内
底との間に接続される電気発熱体と、前記耐熱金属チュ
ーブ内に充填される絶縁粉末とを備えてなるシーズグロ
ープラグにおいて、後端部が耐熱金属チューブに当接し
、先端部が耐熱金属チューブと間隙を形成するように、
耐熱金属チューブを通気穴付金属キャップで取り巻いた
構成を採用した。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cylindrical metal shell made of metal, a heat-resistant metal tube mounted with its tip protruding inside the cylindrical metal shell, and a center electrode disposed coaxially and electrically insulated on the heat-resistant metal tube and the cylindrical metal shell; an electric heating element connected between the tip of the center electrode and the inner bottom of the heat-resistant metal tube; and an insulating powder filled in the heat-resistant metal tube, the sheathed glow plug having a rear end abutting the heat-resistant metal tube and a distal end forming a gap with the heat-resistant metal tube,
A heat-resistant metal tube is surrounded by a metal cap with ventilation holes.
［作用および発明の効果］
（請求項１の作用）
（１）主体金具と中心電極との間に給電すると、電気発
熱体は発熱し、この熱は絶縁粉末を介して耐熱金属チュ
ーブに伝わりチューブの温度が上がる。[Actions and Effects of the Invention] (Actions of Claim 1) (1) When power is supplied between the metal shell and the center electrode, the electric heating element generates heat, and this heat is transmitted to the heat-resistant metal tube via the insulating powder, and the tube temperature increases.
（２）チューブの熱は主に伝導により通気穴付金属キャ
ップに伝わりキャップは熱くなる。さらに、隙間内の空
気は、チューブとキャップの両方から熱の輻射を受け、
またキャップにより空気は流動し難くなっているので熱
が効率良く伝導され、隙間内に早期に高温空気層が形成
される。(2) Heat from the tube is transferred to the metal cap with ventilation holes mainly by conduction, and the cap becomes hot. Furthermore, the air within the gap receives heat radiation from both the tube and the cap,
Furthermore, since the cap makes it difficult for air to flow, heat is efficiently conducted, and a high-temperature air layer is quickly formed within the gap.
（３）霧状に燃料が噴射される。大部分の燃料がキャッ
プに当たり、燃料は気化潜熱を得て気化する。(3) Fuel is injected in a mist form. Most of the fuel hits the cap, and the fuel gains latent heat of vaporization and vaporizes.
（４）気化した燃料は、通気穴から内部に入り、高温空
気層やチューブの壁面に触れて着火する。(4) The vaporized fuel enters the interior through the ventilation hole, touches the high-temperature air layer and the wall of the tube, and ignites.
（請求項１の効果〉
キャップに燃料が当たり、気化して通気穴がら内部に入
り、高温空気層やチューブの壁面に触れて着火がなされ
る。つまり、気化した燃料と高温空気層、チューブとの
接触であるので接触効率が良く、シーズグロープラグは
、燃料への着火性に優れ、エンジン完爆までの時間が短
い。(Effects of Claim 1) Fuel hits the cap, vaporizes and enters the inside of the vent hole, touches the high temperature air layer and the wall surface of the tube and is ignited.In other words, the vaporized fuel and the high temperature air layer and the tube wall are ignited. The sheathed glow plug has excellent ignition properties for the fuel and shortens the time required for the engine to fully explode.
（請求項２の作用〉
（１）チューブの熱は伝導により金網に伝わり金網は熱
くなる。さらに、網目間の空気は、チューブと金網の両
方から熱の輻射を受ける。また金網により流動し難くな
っているので熱が効率良く伝導され、網目間に早期に高
温空気層が形成される。(Effect of Claim 2) (1) Heat from the tube is transferred to the wire mesh by conduction, and the wire mesh becomes hot.Furthermore, the air between the meshes receives heat radiation from both the tube and the wire mesh.Furthermore, the wire mesh makes it difficult to flow. Because of this, heat is conducted efficiently and a high-temperature air layer is quickly formed between the meshes.
（２） ｉｔ状に燃料が噴射される。大部分の燃料が金
網に当たり、燃料は気化潜熱を得て気化する。(2) Fuel is injected in an it-like manner. Most of the fuel hits the wire mesh, and the fuel gains latent heat of vaporization and vaporizes.
（３）気化した燃料は、網目がら内部に入り、高温空気
層やチューブの壁面に触れて着火する。(3) The vaporized fuel enters the inside of the mesh, touches the high-temperature air layer and the wall of the tube, and ignites.
（請求項２の効果）
金網は、熱を裏面の全面に伝導により受けるので極めて
早期に熱くなる。このため、高温空気層は一層早く形成
され、エンジン完爆までの時間はより短い。(Effect of Claim 2) Since the wire mesh receives heat by conduction over the entire back surface, it becomes hot very quickly. For this reason, a high temperature air layer is formed more quickly, and the time required for the engine to fully explode is shorter.
［実施例］ 本発明の第１実施例を第１図に基づき説明する。[Example] A first embodiment of the present invention will be described based on FIG.
シーズグロープラグＡは、筒状主体金具１と、該筒状主
体金具１の先端部１１に挿着されるチューブ２と、該チ
ューブ２内に挿設される中心電極３と、該中心電極３の
先端面３１と前記チューブ２の内底２１との間に接続さ
れる発熱コイル４と、前記チューブ２内に充填される絶
縁粉末５とを備え、通気穴６１付き金属筒６でチューブ
２の先端部２２を包囲してなる。The sheathed glow plug A includes a cylindrical metal shell 1, a tube 2 inserted into the tip 11 of the cylindrical metal shell 1, a center electrode 3 inserted into the tube 2, and a center electrode 3. The tube 2 is equipped with a heating coil 4 connected between the distal end surface 31 of the tube 2 and the inner bottom 21 of the tube 2, and an insulating powder 5 filled in the tube 2. It surrounds the tip 22.
筒状主体金具１は、炭素鋼で形成され、必要に応じて外
壁には金属鍍金が施されている。外周には取付ねじ１２
および六角部１３が設けられている。また、この筒状主
体金具１の先１４ｆ１１１には前記チューブ２を取付け
るための渭１４が穿設され、かつ先端にはエンジン側と
の気密を保持するためのコニカルシート面１７が周設さ
れている。The cylindrical metal shell 1 is made of carbon steel, and the outer wall is plated with metal if necessary. There are 12 mounting screws on the outer periphery.
and a hexagonal portion 13 are provided. Further, the tip 14f111 of the cylindrical metal shell 1 is provided with an arm 14 for attaching the tube 2, and a conical seat surface 17 is provided around the tip to maintain airtightness with the engine side. There is.
チューブ２（外径６ｍｍ、肉厚０．６ｍｍ）は、耐熱ス
テンレス綱で形成され、有底円筒状を呈している。The tube 2 (outer diameter 6 mm, wall thickness 0.6 mm) is made of heat-resistant stainless steel and has a cylindrical shape with a bottom.
中心電極３は、導体金属で形成され、前記チューブ２お
よび筒状主体金具１と同軸的かつ電気絶縁を図って挿設
されている。なお、チューブ２内に嵌め込まれる先端部
３２は径小となっている。The center electrode 3 is formed of a conductive metal, and is inserted coaxially and electrically insulated from the tube 2 and the cylindrical metal shell 1. Note that the distal end portion 32 that is fitted into the tube 2 has a small diameter.
発熱コイル４は、鉄クロム線（線径Ｑ、３ｍｍ）を螺巻
く巻径３ｍｍ）してなる。The heating coil 4 is formed by spirally winding an iron chrome wire (wire diameter Q, 3 mm).
絶縁粉末５は、電気絶縁性を有するマグネシアのセラミ
ック粉末である。なお、５１は絶縁性を有するパツキン
である。The insulating powder 5 is a magnesia ceramic powder having electrical insulation properties. Note that 51 is a packing having insulation properties.
金属筒６は、チューブ２と同材質の耐熱ステンレス綱で
形成され、後端部６２は、チューブ２と同一・内径を有
し、先端部６３は、チューブ２よりやや大きい内径を有
している。複数個の通気穴６１は金属筒６の先端部６３
＠に形成されている。The metal tube 6 is made of heat-resistant stainless steel, which is the same material as the tube 2, and the rear end 62 has the same inner diameter as the tube 2, and the tip 63 has a slightly larger inner diameter than the tube 2. . The plurality of ventilation holes 61 are located at the tip 63 of the metal cylinder 6.
It is formed as @.
なお、後端部６２は前記講１４にちょうど嵌まる大きさ
である。Incidentally, the rear end portion 62 is sized to just fit into the socket 14.
つぎに、シーズグロープラグＡの製造方法（要部）につ
いて述べる。Next, the manufacturing method (main part) of the sheathed glow plug A will be described.
（１）筒状主体金具１の溝１４に金属筒６の後端部６２
の外壁をろう付けする。(1) The rear end 62 of the metal cylinder 6 is inserted into the groove 14 of the cylindrical metal shell 1.
braze the outer wall of the
（２）絶縁粉末５が封入され、発熱コイル４が取付けら
れ、中心電極３が挿設されたチューブアラシイを筒状主
体金具１内に圧入する。なお、チューブアラシイの中心
電極３は六角部１３内で固定部材（図示せず）により電
気絶縁を図って筒状主体金具１に固定される。(2) A tube assembly in which the insulating powder 5 is sealed, the heating coil 4 is attached, and the center electrode 3 is inserted is press-fitted into the cylindrical metal shell 1. The center electrode 3 of the tube arashi is fixed to the cylindrical metal shell 1 within the hexagonal portion 13 with a fixing member (not shown) for electrical insulation.
（３）中心電極３の後端側に、絶縁板１５、中心電極固
定ナツト１６、リード線取付はナツト（図示せず〉を取
付けて完成する。(3) Attach the insulating plate 15, the center electrode fixing nut 16, and a nut (not shown) for attaching the lead wire to the rear end side of the center electrode 3 to complete the process.
つぎに、シーズグロープラグＡの始動性比較試験および
作用効果について述べる。Next, a comparison test on starting performance and the effects of the sheathed glow plug A will be described.
始動性比較試験は、シーズグロープラグＡおよび比較品
を渦流室エンジンを搭載した単画に装着し、環境温度を
一２５℃に設定して行った。この結果を第２図に示す。The startability comparison test was conducted by attaching the sheathed glow plug A and the comparative product to a single panel equipped with a vortex chamber engine, and setting the environmental temperature to -25°C. The results are shown in FIG.
第２図のグラフの横軸は通電経過時間であり、縦軸はエ
ンジン回転数である。The horizontal axis of the graph in FIG. 2 is the elapsed energization time, and the vertical axis is the engine rotation speed.
なお、比較品はシーズグロープラグＡから金属筒６を取
り去ったものである。The comparative product is a sheathed glow plug A with the metal tube 6 removed.
初爆に要する時間は、比較品の３秒に対し、シーズグロ
ープラグＡは１秒である。また、完爆迄の時間は、比較
品では５５秒かかるのに対し、発明品は４０秒である。The time required for the first explosion is 1 second for the sheathed glow plug A, compared to 3 seconds for the comparative product. In addition, it takes 55 seconds for the comparative product to fully detonate, while the invented product takes 40 seconds.
このため、シーズグロープラグＡを用いることにより、
燃料への着火性が良くなり、エンジン完爆までの時間を
１５秒程度短縮できる。Therefore, by using Seeds Glow Plug A,
The ignitability of the fuel improves, and the time it takes for the engine to fully explode can be shortened by about 15 seconds.
つぎに、本発明の第２実施例を第３図に基づき説明する
。Next, a second embodiment of the present invention will be described based on FIG.
本実施例では、金属筒６の代わりに金属ｆｓ６と同材料
の通気穴７１付きの有底円筒７を用いている。また、有
底円筒７は、チューブアラシイを筒状主体金具１内に圧
入により組付けた後、溝１４に圧入して嵌め込んで介装
している。In this embodiment, instead of the metal cylinder 6, a bottomed cylinder 7 with a ventilation hole 71 made of the same material as the metal fs6 is used. Further, the bottomed cylinder 7 is inserted by press-fitting the tube assembly into the cylindrical metal shell 1 and then press-fitting it into the groove 14 .
本実施例のシーズグロープラグＢは、底７２を叩いて容
易に後端部７・３を渭１４に圧入することができる為、
製造が容易である。In the sheathed glow plug B of this embodiment, the rear end portions 7 and 3 can be easily press-fitted into the armature 14 by tapping the bottom 72.
Easy to manufacture.
また、渦流室の気流が金属ｒＪ６の下から侵入しないの
で高温空気層の保持特性に優れ、エンジンの始動性がシ
ーズグロープラグＡよりやや良好である。In addition, since the airflow in the swirl chamber does not enter from below the metal rJ6, the high-temperature air layer retention property is excellent, and the engine startability is slightly better than that of the sheathed glow plug A.
つぎに、本発明の第３実施例を第４図に基づき説明する
。Next, a third embodiment of the present invention will be described based on FIG. 4.
本実施例のシーズグロープラグＣは、ステンレスの網８
をチューブ２の先端部２２に巻装し、金属リング９でｗ
４８を縛り、金属リング９と網８どを溶接してなる。The sheathed glow plug C of this embodiment has a stainless steel mesh 8
Wrap it around the tip 22 of the tube 2, and tighten it with the metal ring 9.
48 is tied up, and the metal ring 9 and the net 8 are welded together.
シーズグロープラグＣは、金網８の裏面が直接チューブ
２に当接しているので、金網８への熱の伝導性が良い。In the sheathed glow plug C, since the back surface of the wire mesh 8 is in direct contact with the tube 2, heat conductivity to the wire mesh 8 is good.
このため、早期に網目間に高温空気層が形成され、エン
ジン完爆までの時間はシーズグロープラグＡ、Ｂよりさ
らに短い。Therefore, a high-temperature air layer is formed between the meshes at an early stage, and the time until the engine completely explodes is even shorter than that of the sheathed glow plugs A and B.
本発明は上記実施例以外につぎの実施態様を含む。The present invention includes the following embodiments in addition to the above embodiments.
ａ、チューブ２の材質は、ハステロイ（商標）などでも
良く、外径は３ｍｍ・−６ｍｍ、肉厚は０゜４ｍｍ〜４
．２ｍｍが好適であり、先端部は先細でも良い。a. The material of the tube 2 may be Hastelloy (trademark), etc., and the outer diameter is 3 mm/-6 mm, and the wall thickness is 0°4 mm to 4 mm.
．． 2 mm is preferred, and the tip may be tapered.
６０発熱コイル４の材質は、その他、ニクロム、ニッケ
ル、タングステン、モリブデン等でも良く、線径は０．
２ｍｍ〜０．６ｍｍ、巻径は２ｍｍ〜４ｍｍが好適であ
り、巻くピッチは異なっていても良い。また、発熱コイ
ル４としては、抵抗温度係数の一定な鉄クロム、ニクロ
ムを用い、この発熱コイルに正の高抵抗温度係数のニッ
ケル、鉄などの制御コイルを直列に接続したものであっ
ても良い。The material of the heating coil 4 may be nichrome, nickel, tungsten, molybdenum, etc., and the wire diameter may be 0.60.
The winding diameter is preferably 2 mm to 0.6 mm, and the winding diameter is preferably 2 mm to 4 mm, and the winding pitch may be different. The heating coil 4 may be made of iron chromium or nichrome, which has a constant temperature coefficient of resistance, and a control coil made of nickel, iron, or the like, which has a high positive temperature coefficient of resistance, may be connected in series to this heating coil. .
Ｃ０通気六６１．７１の形状、大きさ、数、位置は任意
で良い。The shape, size, number, and position of the C0 ventilation six 61.71 may be arbitrary.
ｄ、金属筒６の材質は、耐熱金属であれば良く、金Ｊｉ
ＣｌｌＪ６とチューブ２との隙間間隔は任意で良く、ま
た、金属ｆ！ｉ６はその先端がチューブ２と溶接されて
いても良い。d. The material of the metal cylinder 6 may be any heat-resistant metal, such as gold.
The gap between CllJ6 and tube 2 may be arbitrary, and the metal f! The tip of i6 may be welded to tube 2.
第１図は本発明の第１実施例にかかるシーズグロープラ
グの部分断面図、第２図はそのグロープラグの始動性比
較試験結果を示すグラフである。
第３図は本発明の第２実施例にかかるシーズグロープラ
グの部分断面図である。
第４図は本発明の第３実施例にかかるシーズグロープラ
グの側面図である。
図中 Ａ、Ｂ、Ｃ・・・シーズグロープラグ １・・・
筒状主体金具 ２・・・チューブ（耐熱金属チューブ）
３・・・中心電極 ４・・・発熱コイル（電気発熱体）
５・・・絶縁粉末 ６・・・金属筒（通気穴付金属キャ
ップ〉 ７・・・有底円筒〈通気穴付金属キャップ）８
−・−ｗＡ（金！ｆｉｌ） ２２−ｉｌｌＨＬ ６
２．７３・・・後端部FIG. 1 is a partial sectional view of a sheathed glow plug according to a first embodiment of the present invention, and FIG. 2 is a graph showing the results of a startability comparison test of the glow plug. FIG. 3 is a partial sectional view of a sheathed glow plug according to a second embodiment of the present invention. FIG. 4 is a side view of a sheathed glow plug according to a third embodiment of the present invention. In the diagram A, B, C...Seeded glow plug 1...
Cylindrical main metal fitting 2...Tube (heat-resistant metal tube)
3... Center electrode 4... Heating coil (electric heating element)
5... Insulating powder 6... Metal cylinder (metal cap with ventilation holes) 7... Bottomed cylinder (metal cap with ventilation holes) 8
-・-wA (Fil!fil) 22-illHL 6
2.73... Rear end
Claims (1)
属チューブと、 該耐熱金属チューブおよび筒状主体金具に同軸的かつ電
気絶縁を保って配設される中心電極と、該中心電極の先
端と前記耐熱金属チューブの内底との間に接続される電
気発熱体と、 前記耐熱金属チューブ内に充填される絶縁粉末と を備えてなるシーズグロープラグにおいて、後端部が耐
熱金属チューブに当接し、先端部が耐熱金属チューブと
間隙を形成するように、耐熱金属チューブを通気穴付金
属キャップで取り巻いたことを特徴とするシーズグロー
プラグ。 ２）金属製の筒状主体金具と、 該筒状主体金具内に先端部を突出して装着される耐熱金
属チューブと、 該耐熱金属チューブおよび筒状主体金具に同軸的かつ電
気絶縁を保つて配設される中心電極と、該中心電極の先
端と前記耐熱金属チューブの内底との間に接続される電
気発熱体と、 前記耐熱金属チューブ内に充填される絶縁粉末と を備えてなるシーズグロープラグにおいて、前記耐熱金
属チューブの先端部に金網を巻装したことを特徴とする
シーズグロープラグ。[Scope of Claims] 1) A cylindrical metal shell made of metal, a heat-resistant metal tube installed with its tip protruding into the cylindrical metal shell, and a heat-resistant metal tube that is coaxial with and attached to the heat-resistant metal tube and the cylindrical metal shell. A center electrode arranged while maintaining electrical insulation, an electric heating element connected between the tip of the center electrode and the inner bottom of the heat-resistant metal tube, and an insulating powder filled in the heat-resistant metal tube. The sheathed glow plug is characterized in that the heat-resistant metal tube is surrounded by a metal cap with ventilation holes so that the rear end abuts the heat-resistant metal tube and the tip forms a gap with the heat-resistant metal tube. Sees glow plug. 2) A cylindrical metal shell made of metal, a heat-resistant metal tube installed with its tip protruding inside the cylindrical metal shell, and a heat-resistant metal tube arranged coaxially and electrically insulated between the heat-resistant metal tube and the cylindrical metal shell. A sheath glow comprising: a center electrode provided therein; an electric heating element connected between the tip of the center electrode and the inner bottom of the heat-resistant metal tube; and an insulating powder filled in the heat-resistant metal tube. 1. A sheathed glow plug, characterized in that a wire mesh is wrapped around the tip of the heat-resistant metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171541A JP2683108B2 (en) | 1989-07-03 | 1989-07-03 | Seeds glow plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171541A JP2683108B2 (en) | 1989-07-03 | 1989-07-03 | Seeds glow plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0336424A true JPH0336424A (en) | 1991-02-18 |
| JP2683108B2 JP2683108B2 (en) | 1997-11-26 |
Family
ID=15925037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1171541A Expired - Lifetime JP2683108B2 (en) | 1989-07-03 | 1989-07-03 | Seeds glow plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2683108B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007000367A1 (en) * | 2005-06-27 | 2007-01-04 | Robert Bosch Gmbh | Sheathed-element glow plug |
| JP2010249406A (en) * | 2009-04-15 | 2010-11-04 | Ihi Corp | Ignition device and burner device |
| CN113847183A (en) * | 2021-09-23 | 2021-12-28 | 上海鑫歆源电子有限公司 | Heat control module, drive circuit and ignition coil driver |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5482065B2 (en) * | 2009-07-14 | 2014-04-23 | 株式会社Ｉｈｉ | Burner equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS427580Y1 (en) * | 1964-04-21 | 1967-04-12 | ||
| JPS5623863U (en) * | 1979-07-31 | 1981-03-04 | ||
| JPS57155026A (en) * | 1981-02-07 | 1982-09-25 | Bosch Gmbh Robert | Glow plug for internal combustion engine |
| JPS59231323A (en) * | 1983-06-13 | 1984-12-26 | Ngk Spark Plug Co Ltd | Ceramic glow plug |
-
1989
- 1989-07-03 JP JP1171541A patent/JP2683108B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS427580Y1 (en) * | 1964-04-21 | 1967-04-12 | ||
| JPS5623863U (en) * | 1979-07-31 | 1981-03-04 | ||
| JPS57155026A (en) * | 1981-02-07 | 1982-09-25 | Bosch Gmbh Robert | Glow plug for internal combustion engine |
| JPS59231323A (en) * | 1983-06-13 | 1984-12-26 | Ngk Spark Plug Co Ltd | Ceramic glow plug |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007000367A1 (en) * | 2005-06-27 | 2007-01-04 | Robert Bosch Gmbh | Sheathed-element glow plug |
| JP2010249406A (en) * | 2009-04-15 | 2010-11-04 | Ihi Corp | Ignition device and burner device |
| CN113847183A (en) * | 2021-09-23 | 2021-12-28 | 上海鑫歆源电子有限公司 | Heat control module, drive circuit and ignition coil driver |
| CN113847183B (en) * | 2021-09-23 | 2022-09-30 | 上海鑫歆源电子有限公司 | Heat control module, drive circuit and ignition coil driver |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2683108B2 (en) | 1997-11-26 |
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