JPH039315B2 - - Google Patents
Info
- Publication number
- JPH039315B2 JPH039315B2 JP56083422A JP8342281A JPH039315B2 JP H039315 B2 JPH039315 B2 JP H039315B2 JP 56083422 A JP56083422 A JP 56083422A JP 8342281 A JP8342281 A JP 8342281A JP H039315 B2 JPH039315 B2 JP H039315B2
- Authority
- JP
- Japan
- Prior art keywords
- glow plug
- relay
- resistor
- temperature
- resistance
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910001120 nichrome Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はデイーゼル機関の始動補助装置に用い
られるグロープラグの電流制限用抵抗器の抵抗体
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a resistor for a current limiting resistor of a glow plug used in a starting assist device for a diesel engine.
［従来の技術］
デイーゼル機関等の内燃機関には、始動を容易
にするためグロープラグが装着され、グロープラ
グに通電して予熱がなされる。[Prior Art] An internal combustion engine such as a diesel engine is equipped with a glow plug to facilitate starting, and the glow plug is energized to preheat the engine.
予熱を短時間に行うため、グロープラグを急速
加熱型とし、グロープラグの通電制御を２つのリ
レーを用い、第１のリレーで大電流を供給し、急
速に加熱し、所定温度に上昇後は第２のリレーを
用い電流制限用抵抗器を介して通電し、グロープ
ラグ温度を所定温度に保持する装置が提案されて
いる。 In order to perform preheating in a short time, the glow plug is of a rapid heating type, and two relays are used to control the glow plug's energization. A device has been proposed that uses a second relay to supply current through a current limiting resistor to maintain the glow plug temperature at a predetermined temperature.
［発明が解決しようとする課題］
しかるに、従来の電流制限用抵抗器は次のよう
な欠点があつた。[Problems to be Solved by the Invention] However, the conventional current limiting resistor has the following drawbacks.
(ア) 電流制限用抵抗器をエンジン始動時のバツテ
リー電圧値で設計すると、アフターグローの
際、バツテリー電圧が上昇するのでグロープラ
グの溶断が起こり易い。(a) If the current limiting resistor is designed based on the battery voltage value at the time of engine startup, the battery voltage increases during afterglow, making it easy for the glow plug to melt.
(イ) 電流制限用抵抗器をエンジン始動後のバツテ
リー電圧値で設計するとエンジン始動時に所定
温度を維持できない。(a) If the current limiting resistor is designed based on the battery voltage value after the engine starts, the specified temperature cannot be maintained when the engine starts.
本発明の目的は、エンジン始動時にはグロープ
ラグを十分な温度に保持し、エンジン始動後バツ
テリー電圧が上昇しても、適度に電流を制限しグ
ロープラグへの印加電圧を上昇させず、グロープ
ラグの温度維持に優れたグロープラグの電流制限
用抵抗器の提供にある。 The purpose of the present invention is to maintain the glow plug at a sufficient temperature when starting the engine, and even if the battery voltage increases after the engine starts, the current is appropriately limited and the voltage applied to the glow plug does not increase. An object of the present invention is to provide a current limiting resistor for a glow plug that is excellent in maintaining temperature.
［課題を解決するための手段］ 本発明は、次の構成を採用した。[Means to solve the problem] The present invention employs the following configuration.
急速加熱昇温型グロープラグＧと、該グロープ
ラグＧに設定時限ｔ１の間大電流を流すリレー
と、前記グロープラグＧが所定温度に昇温した
後、設定時限ｔ２の間前記グロープラグＧに制限
された電流を流すリレーとを備えてなるデイー
ゼル機関の始動補助装置に用いられ、前記リレー
により通電されるとともに、容器４内に抵抗体
５を配してなるグロープラグの電流制限用抵抗器
２において、前記抵抗体５は、抵抗温度係数がほ
ぼ一定の、鉄クロムまたはニクロム等で形成され
た抵抗材５１と、常温で前記抵抗材５１より抵抗
値が小さく、且つ、抵抗温度係数が大きな正の値
を有する、純ニツケル等で形成された抵抗材５２
とを電気的に直列接続してなる。 A rapid heating temperature increase type glow plug G, a relay that causes a large current to flow through the glow plug G for a set time period t1, and a relay that supplies a large current to the glow plug G for a set time period t2 after the glow plug G has been heated to a predetermined temperature. A current limiting resistor for a glow plug, which is used in a diesel engine starting auxiliary device comprising a relay that allows a limited current to flow, is energized by the relay, and has a resistor 5 disposed within a container 4. In No. 2, the resistor 5 includes a resistance material 51 made of iron chromium, nichrome, etc., which has a substantially constant temperature coefficient of resistance, and a resistance material 51 that has a smaller resistance value than the resistance material 51 at room temperature and a larger temperature coefficient of resistance. Resistance material 52 made of pure nickel or the like and having a positive value
are electrically connected in series.
［作用および発明の効果］ 電流制限用抵抗器２は次のように作用する。[Action and effect of invention] The current limiting resistor 2 functions as follows.
まず、リレーによりグロープラグＧに大電流
が流れ、グロープラグＧは急速に昇温する。 First, a large current flows through the glow plug G by the relay, and the temperature of the glow plug G increases rapidly.
次に、リレーの通電が終了し、グロープラグ
Ｇには電流制限用抵抗器２を介してリレーによ
り通電が行われる。このため、電流制限用抵抗器
２の抵抗値（抵抗材５１と抵抗材５２との和）は
小さい値を取る。この抵抗器２は通電により発熱
（主に抵抗材５１）し始める。 Next, the relay is energized, and the glow plug G is energized by the relay via the current limiting resistor 2. Therefore, the resistance value of the current limiting resistor 2 (the sum of the resistance material 51 and the resistance material 52) takes a small value. This resistor 2 begins to generate heat (mainly the resistance material 51) when energized.
この状態で、デイーゼル機関の始動が行われ、
始動に伴い、バツテリー電圧は上昇する。 In this state, the diesel engine is started,
As the engine starts, the battery voltage increases.
抵抗材５１の発熱量がバツテリー電圧の上昇に
伴つて増加し、抵抗材５２の温度上昇を起こし、
その抵抗値を上げる。 The amount of heat generated by the resistance material 51 increases as the battery voltage increases, causing a rise in the temperature of the resistance material 52.
Increase its resistance value.
電流制限用抵抗器２の抵抗値はリレーの通電
開始時に比べ大きい値となる。 The resistance value of the current limiting resistor 2 becomes a larger value than when the relay starts energizing.
電流制限用抵抗器２により奏する効果は次のと
おりである。 The effects produced by the current limiting resistor 2 are as follows.
(あ) グロープラグの電流制限用抵抗器２は、上
述の如く作用するので、エンジン始動時にはグ
ロープラグＧを十分な温度に保持し、エンジン
始動後バツテリー電圧が上昇しても、適度に電
流を制限しグロープラグＧへの印加電圧を上昇
させず、グロープラグＧの温度維持に優れる。(A) The current limiting resistor 2 of the glow plug acts as described above, so it maintains the glow plug G at a sufficient temperature when starting the engine, and maintains a moderate current even if the battery voltage rises after the engine starts. It is excellent in maintaining the temperature of the glow plug G without increasing the voltage applied to the glow plug G.
(い) 電流制限用抵抗器２の抵抗体５は、抵抗温
度係数がほぼ一定の、鉄クロムまたはニクロム
等で形成された抵抗材５１と、常温で前記抵抗
材５１より抵抗値が小さく、且つ、抵抗温度係
数が大きな正の値を有する、純ニツケル等で形
成された抵抗材５２とを電気的に直列接続して
なる。ここで、電流制限用抵抗器２の抵抗値は
抵抗材５１，５２の合成抵抗であり、温度と抵
抗値とは適度に推移する。このため、抵抗器２
での電流制御は適正に行え、機関始動後のグロ
ープラグ２の温度維持が容易となる。(b) The resistor 5 of the current limiting resistor 2 includes a resistor material 51 made of iron chromium, nichrome, etc., which has a substantially constant temperature coefficient of resistance, and a resistor material 51 that has a resistance value smaller than that of the resistor material 51 at room temperature, and , and a resistance material 52 made of pure nickel or the like having a large positive temperature coefficient of resistance are electrically connected in series. Here, the resistance value of the current limiting resistor 2 is the combined resistance of the resistance materials 51 and 52, and the temperature and resistance value change appropriately. For this reason, resistor 2
Current control can be performed appropriately, and the temperature of the glow plug 2 can be easily maintained after the engine is started.
［実施例］
次に本発明を図に示す一実施例に基づき説明す
る。[Example] Next, the present invention will be described based on an example shown in the drawings.
第１図はデイーゼルエンジンの始動補助装置を
示し、Ａはエンジンのキースイツチ、Ｂはバツテ
リー、Ｇは副燃焼室に装着された急速加熱昇温型
グロープラグである。 FIG. 1 shows a starting assist device for a diesel engine, where A is an engine key switch, B is a battery, and G is a rapid heating temperature rise type glow plug installed in the auxiliary combustion chamber.
通電制御装置１は、急速昇温用リレーと、温
度維持用通電リレーと、タイマT1、T2、リレ
ー３１，３３とからなる。 The energization control device 1 includes a rapid temperature increase relay, a temperature maintenance energization relay, timers T 1 and T 2 , and relays 31 and 33.
急速昇温用リレーは、グロープラグＧを急速
に昇温させる目的で大電流を供給するためのもの
である。 The rapid temperature increase relay is for supplying a large current for the purpose of rapidly increasing the temperature of the glow plug G.
温度維持用通電リレーは、グロープラグＧが
所定温度に昇温した後、その温度を維持させる目
的で電流制限用抵抗器２を介して限定された電流
を通電するためのものである。 The temperature maintenance energizing relay is for passing a limited current through the current limiting resistor 2 in order to maintain the temperature of the glow plug G after it has risen to a predetermined temperature.
タイマT1、T2は、それぞれ、時定数を決定す
るためのRC充放電回路、基準電圧設定用の分圧
回路および比較器を備える。 Timers T 1 and T 2 each include an RC charging/discharging circuit for determining a time constant, a voltage dividing circuit for setting a reference voltage, and a comparator.
リレー３１は、タイマT1がハイレベルの出力
を生じたとき（設定時限t1の間）、その接点を閉
じ、リレーとバツテリーＢとを電気接続する。 The relay 31 closes its contacts to electrically connect the relay and the battery B when the timer T1 produces a high level output (during the set time period t1 ).
リレー３３は、タイマT2がハイレベルの出力
を生じたとき（設定時限t2の間）、その接点を閉
じ、リレーとバツテリーＢとを電気接続する。 The relay 33 closes its contacts and electrically connects the relay and the battery B when the timer T2 produces a high level output (during the set time period t2 ).
運転者がエンジンのキースイツチＡをOFFか
らONにして、グロープラグＧおよび通電制御装
置１への通電を開始すると、グロープラグＧの温
度Ｔは、第２図の如く、まずタイマT1の設定時
限t1の間にリレーが接点Iaを閉じて大電流を流
すので急速に昇温してT0となり、その後は、タ
イマT2の出力によりリレーが接点ａを閉じ
ていて電流制限用抵抗器２を通して通電するので
該温度をほぼT0に維持する。この状態で、運転
者がキースイツチＡをSTへ投入してスタータ・
モータ駆動の操作を行うと機関は円滑に始動す
る。 When the driver turns the engine key switch A from OFF to ON and starts energizing the glow plug G and the energization control device 1, the temperature T of the glow plug G first changes to the set time of the timer T1 , as shown in Fig. 2. During t 1 , the relay closes contact Ia and a large current flows, so the temperature rises rapidly and reaches T 0. After that, the relay closes contact a due to the output of timer T 2 , and current limiting resistor 2 The temperature is maintained at approximately T 0 by applying current through the tube. In this state, the driver turns key switch A to ST to turn on the starter.
The engine starts smoothly when the motor drive is operated.
第３図は、抵抗器２の一実施例を示す。 FIG. 3 shows one embodiment of the resistor 2.
４は、外壁に機関のインテークマニホールドの
取付けねじ４１が形成され、締結用ボルト状の頭
部４２を有する金属容器、５は抵抗体であり、本
実施例では、抵抗温度係数がほぼ一定の、鉄クロ
ムまたはニクロム等の金属線を螺巻した抵抗値
RBの抵抗材５１と、抵抗温度係数が正で大きい
純ニツケル等の金属線を螺巻した抵抗値RAの抵
抗材５２とを接続金具５３で直列接続して形成さ
れる。 4 is a metal container having an engine intake manifold mounting screw 41 formed on the outer wall and a fastening bolt-shaped head 42; 5 is a resistor; in this embodiment, the resistance temperature coefficient is approximately constant; Resistance value of spirally wound metal wire such as iron chrome or nichrome
A resistance material 51 having a resistance value R B and a resistance material 52 having a resistance value R A formed by spirally winding a metal wire such as pure nickel having a large positive temperature coefficient of resistance are connected in series using a connecting fitting 53 .
５５，５６は抵抗体５の両端子に接続した耐熱
性の絶縁被覆付リード線、６は金属容器４の内壁
と抵抗体５とを絶縁するため、両者の間に介在さ
せた容器状の絶縁体であり、本実施例では金属容
器４の内壁に密着するセラミツク製有底円筒体が
用いられている。 55 and 56 are heat-resistant insulated lead wires connected to both terminals of the resistor 5, and 6 is a container-shaped insulator interposed between the inner wall of the metal container 4 and the resistor 5 to insulate them. In this embodiment, a ceramic cylinder with a bottom that is in close contact with the inner wall of the metal container 4 is used.
７は金属容器４内および絶縁体６内に充填され
たマグネシア、アルミナなどのセラミツク粉体の
絶縁性充填材であり、抵抗材５１，５２は絶縁性
充填材７を介在させて並列配置されている。ま
た、上記セラミツク粉体の代わりに熱固着剤等で
モールドする方法を用いる場合もある。 7 is an insulating filler made of ceramic powder such as magnesia or alumina filled in the metal container 4 and the insulator 6, and the resistive materials 51 and 52 are arranged in parallel with the insulating filler 7 interposed therebetween. There is. Further, a method of molding with a heat fixing agent or the like may be used instead of the ceramic powder.
８は金属容器４の開口部を塞ぐため該開口部に
嵌着された蓋、９は該蓋８に設けたリード線取出
し用穴８１，８２と、該穴８１，８２を挿通する
リード線５５，５６とのシール材、１０は機関に
取付けた際の洩れを防止するためのパツキンであ
る。 8 is a lid fitted to the opening of the metal container 4 to close it; 9 is a lead wire extraction hole 81, 82 provided in the lid 8; and a lead wire 55 inserted through the hole 81, 82. , 56, and 10 are packings for preventing leakage when installed in an engine.
以上の構成からなる本発明のグロープラグの電
流制限用抵抗器は次のように作動する。 The current limiting resistor of the glow plug of the present invention having the above structure operates as follows.
リレーによつて抵抗器２を介してグロープラ
グＧへ通電し、所定温度を保持するときは抵抗器
２は大きい正の抵抗温度係数を有する抵抗材５２
のもつ抵抗値RAと、抵抗温度係数がほぼ一定の
抵抗材５１のもつ抵抗値RUとの合成抵抗値RTで
グロープラグＧは通電制御される。 When the glow plug G is energized by the relay through the resistor 2 and a predetermined temperature is maintained, the resistor 2 is a resistive material 52 having a large positive temperature coefficient of resistance.
The glow plug G is energized by a composite resistance value R T of the resistance value R A of the glow plug G and the resistance value R U of the resistive material 51 having a substantially constant resistance temperature coefficient.
電源電圧が低いときは、この抵抗器２での電力
消費も少なく発熱も小さいので、この合成抵抗値
RTは低い抵抗値RT1を有して、グロープラグＧを
加熱する（第５図参照）。 When the power supply voltage is low, this resistor 2 consumes less power and generates less heat, so this combined resistance value
R T has a low resistance value R T1 and heats the glow plug G (see FIG. 5).
エンジン始動後は、バツテリー電圧の上昇と抵
抗器２での発熱量で抵抗材５２の抵抗値が増大し
て抵抗値RT2となり、グロープラグＧへの印加電
圧を制御する。 After the engine is started, the resistance value of the resistance material 52 increases due to the increase in battery voltage and the amount of heat generated by the resistor 2, and reaches the resistance value R T2 , thereby controlling the voltage applied to the glow plug G.
このグロープラグＧの印加電圧制御特性は、抵
抗材５１と抵抗材５２の比率Ｋで、自由に設定す
ることができ、これにより抵抗器２を介しての通
電に対するグロープラグＧの降温特性も比率Ｋに
より第６図のグラフの如く変化する。 The applied voltage control characteristic of the glow plug G can be freely set by the ratio K of the resistive material 51 and the resistive material 52, and thereby the temperature decreasing characteristic of the glow plug G with respect to current passing through the resistor 2 can also be set as a ratio. K changes as shown in the graph of FIG.
すなわち、900℃で約0.7Ω程度のグロープラグ
を４個を並列接続し、抵抗材５１（本実験例では
鉄クロム線を螺巻したもの）を70ｍΩ程度、抵抗
材５２（純ニツケル線を螺巻したもの）を30ｍΩ
程度とし、バツテリー電圧約12Vでリレーを約
６秒間作動させた後、リレーで通電したとこ
ろ、ほぼ900℃を維持し、その後電源電圧を15V
まで上昇させたとき、グロープラグＧ温度は約
800℃程度となり、エンジン始動後のバツテリー
電圧上昇時に非常によい温度制御特性を示した。 That is, four glow plugs with a resistance of about 0.7Ω at 900°C are connected in parallel, and a resistance material 51 (in this experiment, a spirally wound iron chrome wire) of about 70mΩ and a resistance material 52 (a pure nickel wire spirally wound) are connected in parallel. 30 mΩ
After operating the relay for about 6 seconds with a battery voltage of about 12V, the relay was energized, and the temperature was maintained at approximately 900℃, and then the power supply voltage was reduced to 15V.
When the glow plug G temperature is increased to approximately
The temperature reached approximately 800℃, demonstrating very good temperature control characteristics when the battery voltage rises after the engine starts.
本発明は上記実施例以外に次の実施態様も含
む。 In addition to the above embodiments, the present invention also includes the following embodiments.
ａ 抵抗材５１，５２は上記金属抵抗線以外に帯
状、導電性セラミツクであつても良い。a The resistive materials 51 and 52 may be strip-shaped or conductive ceramics in addition to the above-mentioned metal resistance wires.
ｂ 第４図に示すように、電流制限用抵抗器２を
インテークマニホールドに配設し、発生するジ
ユール熱により吸気を加熱するようにしても良
い。b As shown in FIG. 4, a current limiting resistor 2 may be disposed in the intake manifold, and the intake air may be heated by generated Joule heat.
ｃ 電流制限用抵抗器２の設置場所は限定され
ず、また抵抗器２の容器４はフインや凹凸が有
つても良い。c The installation location of the current limiting resistor 2 is not limited, and the container 4 of the resistor 2 may have fins or irregularities.
ｄ リレーは上記実施例ではリレーの通電時
も通電状態となつているが、リレーがOFF
となると同時に通電がなされたり、設定時限ｔ
１の途中で通電がなされるような構成であつて
も良い。d The relay is in the energized state even when the relay is energized in the above example, but when the relay is OFF
The current is turned on at the same time as t, or the set time
It is also possible to adopt a configuration in which energization is performed in the middle of step 1.
第１図は本発明にかかるグロープラグの電流制
限用抵抗器の作動を説明するための電気結線図、
第２図はグロープラグの昇温特性を示すグラフ、
第３図は抵抗器の断面図、第４図は機関の概略
図、第５図は抵抗体の温度変化を示すグラフ、第
６図はグロープラグの温度変化を示すグラフであ
る。
図中１……通電制御装置、２……グロープラグ
の電流制限用抵抗器、４……金属容器（容器）、
５……抵抗体、Ｇ……急速加熱昇温型グロープラ
グ、５１……抵抗材、５２……抵抗材、ｔ１……
設定時限、ｔ２……設定時限、Ｉ……急速昇温用
リレー（リレーＩ）、……温度維持用通電リレ
ー（リレー）。
FIG. 1 is an electrical wiring diagram for explaining the operation of the current limiting resistor of the glow plug according to the present invention;
Figure 2 is a graph showing the temperature rise characteristics of glow plugs.
FIG. 3 is a sectional view of the resistor, FIG. 4 is a schematic diagram of the engine, FIG. 5 is a graph showing the temperature change of the resistor, and FIG. 6 is a graph showing the temperature change of the glow plug. In the figure, 1... energization control device, 2... glow plug current limiting resistor, 4... metal container (container),
5...Resistor, G...Rapid heating temperature rise type glow plug, 51...Resistance material, 52...Resistance material, t1...
Setting time limit, t2... Setting time limit, I... Relay for rapid temperature rise (relay I),... Energizing relay for temperature maintenance (relay).
Claims (1)
プラグＧに設定時限ｔ１の間大電流を流すリレー
と、前記グロープラグＧが所定温度に昇温した
後、設定時限ｔ２の間前記グロープラグＧに制限
された電流を流すリレーとを備えてなるデイー
ゼル機関の始動補助装置に用いられ、前記リレー
により通電されるとともに、容器４内に抵抗体
５を配してなるグロープラグの電流制限用抵抗器
２において、 前記抵抗体５は、抵抗温度係数がほぼ一定の、
鉄クロムまたはニクロム等で形成された抵抗材５
１と、 常温で前記抵抗材５１より抵抗値が小さく、且
つ、抵抗温度係数が大きな正の値を有する、純ニ
ツケル等で形成された抵抗材５２と を電気的に直列接続してなることを特徴とするグ
ロープラグの電流制限用抵抗器２。[Scope of Claims] 1. A rapid heating temperature increase type glow plug G, a relay that allows a large current to flow through the glow plug G for a set time period t1, and a set time period t2 after the glow plug G has heated up to a predetermined temperature. The glow plug G is used in a diesel engine starting auxiliary device comprising a relay that supplies a limited current to the glow plug G, and is energized by the relay and has a resistor 5 disposed within the container 4. In the plug current limiting resistor 2, the resistor 5 has a substantially constant resistance temperature coefficient.
Resistance material 5 made of iron chrome or nichrome, etc.
1 and a resistive material 52 made of pure nickel or the like, which has a smaller resistance value than the resistive material 51 at room temperature and a large positive temperature coefficient of resistance, are electrically connected in series. Features: Glow plug current limiting resistor 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8342281A JPS57198369A (en) | 1981-05-30 | 1981-05-30 | Resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8342281A JPS57198369A (en) | 1981-05-30 | 1981-05-30 | Resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57198369A JPS57198369A (en) | 1982-12-04 |
| JPH039315B2 true JPH039315B2 (en) | 1991-02-08 |
Family
ID=13801992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8342281A Granted JPS57198369A (en) | 1981-05-30 | 1981-05-30 | Resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198369A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824476U (en) * | 1981-08-10 | 1983-02-16 | いすゞ自動車株式会社 | Resistor for temperature control of glow plugs |
| JPS59162372A (en) * | 1983-03-08 | 1984-09-13 | Diesel Kiki Co Ltd | Starting aids for diesel engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5460630A (en) * | 1977-10-04 | 1979-05-16 | Bosch Gmbh Robert | Preheating plug for internal combustion engine |
| JPS55101771A (en) * | 1979-01-25 | 1980-08-04 | Diesel Kiki Co Ltd | Auxiliary starting device for diesel engine |
| JPS561955U (en) * | 1979-06-19 | 1981-01-09 | ||
| JPS5659496A (en) * | 1979-10-19 | 1981-05-22 | Matsushita Electric Ind Co Ltd | Sheathed heater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5522383Y2 (en) * | 1978-08-02 | 1980-05-28 |
-
1981
- 1981-05-30 JP JP8342281A patent/JPS57198369A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5460630A (en) * | 1977-10-04 | 1979-05-16 | Bosch Gmbh Robert | Preheating plug for internal combustion engine |
| JPS55101771A (en) * | 1979-01-25 | 1980-08-04 | Diesel Kiki Co Ltd | Auxiliary starting device for diesel engine |
| JPS561955U (en) * | 1979-06-19 | 1981-01-09 | ||
| JPS5659496A (en) * | 1979-10-19 | 1981-05-22 | Matsushita Electric Ind Co Ltd | Sheathed heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57198369A (en) | 1982-12-04 |
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