JPS585475A - Controller for quick-heating glow plug - Google Patents
Controller for quick-heating glow plugInfo
- Publication number
- JPS585475A JPS585475A JP10206981A JP10206981A JPS585475A JP S585475 A JPS585475 A JP S585475A JP 10206981 A JP10206981 A JP 10206981A JP 10206981 A JP10206981 A JP 10206981A JP S585475 A JPS585475 A JP S585475A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- glow plug
- comparator
- contact
- relay
- 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
Links
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
- F02P19/021—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 characterised by power delivery controls
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ディーゼルエンジンの始動補助装置であるグ
ロープラグの制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a glow plug, which is a starting assist device for a diesel engine.
ディー(ルエンジンO論動性を良くするために燃焼型内
を加熱するが、そO加熱のためグロープラグ食用いる仁
とは全知である。Die (engine) heats the inside of the combustion mold to improve O logic, but I am omniscient that glow plugs are used to heat the engine.
従来、燃焼基円の予熱論定温直(約100℃)K違する
まで5〜7秒の時間をかけて予熱していた。Conventionally, preheating was performed over a period of 5 to 7 seconds until the temperature of the combustion base reached a constant temperature (approximately 100° C.).
しかしながら、こaS〜1秒の予熱時間を待つというこ
とは、ガソリンを燃料とするエンジンに慣れ親しんだ運
転者に11ILりては耐えが九ことで612゜予熱時間
の短縮が望まれる。ζ01HIK対処するため、加熱ス
ピードを上げ、急遍加熱をすることになる。とζろがシ
ーズ瀝ダ■−プツダの様に、コイルが鞘材内部に埋設さ
れている場合、急速加熱による大電流を急激にグロープ
ラグに通電するとコイル部は、発熱量が大−きいために
急速に加熱されるが、外側は温jfが上らないtまであ
るとか、あるいLコイル巻密度の高い場所では温度は上
る曝し
が4IVM度の低い場所では温度が低いう状態が生ずる
。従って緩かな加熱スピードのときはグロープラグ全体
が除々に加熱されるため、コイル部と外表部の温度差は
小さく問題がないが、急速加熱では外表部が900℃に
達するときはコイル部は1100℃に奄なろというむと
である。このことはグロープラグの急速加熱において、
−外表面の温度をもとにコイル抵抗を演算し、これを基
に電流を制御する装置を用いると、外表部の温度が90
0℃でも内部温度か1100uにもなることがあること
を意味し、グロープラグの耐久性を着しく劣化させる原
因となる。However, waiting for a preheating time of 1 second is difficult for drivers accustomed to gasoline-fueled engines to withstand, so it is desirable to shorten the preheating time by 612°. In order to deal with ζ01HIK, the heating speed will be increased and heating will be done rapidly. If the coil is buried inside the sheath material, such as in the case of putuda, if a large current due to rapid heating is suddenly applied to the glow plug, the coil will generate a large amount of heat. However, on the outside, the temperature jf does not rise until t, or in places where the L coil winding density is high, the temperature rises, but in places with low exposure of 4 IVM degrees, a state occurs where the temperature is low. Therefore, when the heating speed is slow, the entire glow plug is heated gradually, so the temperature difference between the coil part and the outer surface is small and there is no problem. However, with rapid heating, when the outer surface reaches 900°C, the coil part is It is called Amanaro in ℃. This means that when rapidly heating a glow plug,
- If you use a device that calculates the coil resistance based on the temperature of the outer surface and controls the current based on this, the temperature of the outer surface will be 90.
This means that even at 0°C, the internal temperature can reach as high as 1100 u, which causes a severe deterioration in the durability of the glow plug.
そζで、本発明は、このような不具合を解消する丸めグ
ロープラグの加熱を2段階にし、初めのI[1段目はグ
ー−プラグの加熱設定抵抗を高くし、後の第2段目のそ
れを低くすることにょ9、発熱コイル部の加熱過ぎによ
るグロープラグの耐久性劣化を防ぐ急加熱グロープラグ
の制御装置を提供することを目的とする。Therefore, the present invention solves this problem by heating the round glow plug in two stages. It is an object of the present invention to provide a control device for a rapidly heating glow plug that prevents deterioration of durability of the glow plug due to overheating of the heating coil portion by reducing the temperature.
次に本発明の実施ガを図面を参照しつつ詳細に説明する
。Next, embodiments of the present invention will be described in detail with reference to the drawings.
第1図は急速加熱aの場合と緩速加熱すの場合のグロー
プラグの抵抗と予熱温度の関係を示す図である。同図に
示すように設定予熱温度Tsを得るためのグロープラグ
抵抗は急速加熱の場合はRsであるが、緩加熱の場合は
それよシ小さいRMである。FIG. 1 is a diagram showing the relationship between the resistance of the glow plug and the preheating temperature in the case of rapid heating a and the case of slow heating. As shown in the figure, the glow plug resistance for obtaining the set preheating temperature Ts is Rs in the case of rapid heating, but is RM, which is smaller than that in the case of slow heating.
従って急速加熱で抵抗Reを検知して制御する制御方法
で祉グロープラグの加熱完了後、一定温度を保持するた
めに′kt易の抵抗値でコントロールする七、グロープ
ラグの温y社さらに高< TMになってしまうので発熱
コイルの加熱過ぎKよる溶断岬の原因になる。そζでこ
の発熱コイルの加熱過ぎを防ぎ、グロ・−プラグの加熱
の安定化をはかる制御装置が必要となるのである。Therefore, by using a control method that detects and controls the resistance Re during rapid heating, after the heating of the glow plug is completed, it is controlled with an easy resistance value to maintain a constant temperature. Since it becomes TM, overheating of the heating coil causes a fusion cape. Therefore, a control device is required to prevent the heating coil from overheating and stabilize the heating of the glow plug.
l[2図は、本発明に係る急速加熱グロープラグの制御
装置に用いる回路図である。EOは電源で、車−のバッ
テリーなどからなる。2はキースイッチ、r4は第1リ
レーの常開接点、R・はグロープラグの電流検出用抵抗
で、グロープラグの常温抵抗値の1/1o以下の値を有
する。1はグロープラグで、Rgはグロー)゛ラグの発
熱コイルの抵抗である。Figure 2 is a circuit diagram used in a control device for a rapid heating glow plug according to the present invention. EO is the power source, which consists of things like car batteries. 2 is a key switch, r4 is a normally open contact of the first relay, and R is a current detection resistor of the glow plug, which has a value of 1/1o or less of the normal temperature resistance value of the glow plug. 1 is the glow plug, and Rg is the resistance of the heating coil of the glow lug.
グロープラグの加熱電流は、電源Eo−+命−スイース
イッチ2→電流検出用抵抗グロープラグ→電源E。The heating current for the glow plug is as follows: power supply Eo-+ life switch 2 → current detection resistor glow plug → power supply E.
なる回路を経て流れることになる。R1s R1m R
4OR4は抵抗で、抵抗R1+ R1とグロープラグの
電流検出用抵抗R・、グロープラグの発熱コイル°の抵
抗Rgは第1のブリッジ回路を構成し、抵抗−5R4と
抵抗8・、Rgで第2のブリッジ回路を構成する。cl
。It will flow through a circuit. R1s R1m R
4OR4 is a resistor, resistor R1 + R1 and the glow plug's current detection resistor R・, the glow plug's heating coil resistance Rg constitute the first bridge circuit, and the resistor -5R4 and the resistor 8・, Rg constitute the second bridge circuit. Configure a bridge circuit. cl
.
Co1d比叡器で、01社グロープラグの抵抗が第1図
のRsに達した時出力を出すようセットされ、第1ブリ
ッジ回路の端子a、bKIIk続され、Csuグロープ
ラグの抵抗がM1図のRNに達した時出力を出すように
セットされ、第2のブリッジ回路の端子aaKil続さ
れる。3は0回路で比較器Ct 、 C,の出力端子に
接続される。4は遅延回路でOR回路暴の出力端子に働
絖される。5社リレー駆動装置で、洞見ばワンシ冒ット
マルチバイプレータで構成でれる* RLIは第1リレ
ーコイルで一方端をリレー張
駆動回路5の出力端子に接続し、他端子接地する。The Co1d Hiei device is set to output when the resistance of the 01 glow plug reaches Rs in Figure 1, and the terminals a and bKIIk of the first bridge circuit are connected, and the resistance of the Csu glow plug is set to RN in the M1 diagram. It is set to output an output when it reaches , and is connected to the terminal aaKil of the second bridge circuit. 3 is a 0 circuit connected to the output terminal of the comparator Ct, C,. 4 is a delay circuit which is applied to the output terminal of the OR circuit. The RLI is a relay drive device made by 5 companies, and is composed of a multi-vibrator made by Domiba Wanshi.
6は増巾器で比較器C1の出力端子に接続する。6 is an amplifier connected to the output terminal of the comparator C1.
RI4a第4aレーコイルで増巾器1の出力端子に接続
されるgh r4B o r&bは第2リレーの常開接
点でr41は第2リレーを自己保持する作用を、r4b
t[2ブリッジ−動を作動させる丸めに接続されている
。gh r4B o r&b is the normally open contact of the second relay, and r41 is the self-holding contact of the second relay, and r4b
t[2 bridge-connected to the rounding that activates the motion.
次に回路の動作について説明する。まずキースイッチ2
を投入すると、前述のように電sEo→キースイッチ2
→ag1リレーの常閉接点r4→電流検出用抵抗Re→
グロープラグ1→電源Roと電流が流れグロープラグの
超急速加熱が開始される。Next, the operation of the circuit will be explained. First, key switch 2
When you turn on the power switch sEo → key switch 2 as mentioned above,
→ Normally closed contact r4 of ag1 relay → Current detection resistor Re →
Current flows from the glow plug 1 to the power source Ro, and ultra-rapid heating of the glow plug begins.
グロープラグが加熱され温度が上昇すると発熱コイルの
抵抗Rgの111も増大し、それと共にブリッジ回路の
端子畠の電位も上昇する。発熱コイルの抵抗Rgが第1
図のR8の甑に達すると比較器C1が出力信号を発生す
る。2の出力信号がOR回路5、遅延回路4を介し、第
1リレー駆動装置5を作動させ、この駆動装置の作動に
より駆動装置のワンシ曹ットiルテパイブレータの出力
中の時間だけすV −コイルRL、を励磁する。リレー
コイk RLlO励磁によりリレーが作動しその接点r
4 を開放して加熱電流を遮断し超急速加熱を中止する
。一方比較器Qの出力は増巾器6にょ9増巾され第2リ
レーのコイルRL、を励磁する。第2リレーが作動する
と、その接点r41、r/abが閉じ、r14@ Kよ
シ第2リレーが自己保持するとともにr4bにょシ前述
の第2プリン回路が構成される。すν駆動装置5のワン
シ冒ットマルチバイプレータの出力が終了すると、第1
リレーは復帰しその接点r4が再び閉じ加熱電流がグロ
ーパルスに再び流れることになる。先の加熱中止でグロ
ープラグの温度が下るが、この再加熱により温度が再び
上昇し発熱コイルの抵抗+m Rgが増大すると共に、
第2ブリツジ回路端子&、C閣の電圧鳴増大する* k
go*が第1図RNの値になると比較器C3が出力信号
を出し、この出力偏号はOR回路5、遅延回路4を介し
てリレーm鯛装置を作動する。リレー駆動装置の作動に
ょクワンシ■ットーrルチバイプレータの出力中だけ第
1リレーを作動させ、リレー接点r4により加熱回路を
開放し加熱を中止する。それ以後a IJリレー駆動装
置の断続的出力によシリレー接点r40開閉が繰巾返さ
れ燃焼室の温度予熱設定温度に保九れることになる。When the glow plug is heated and its temperature rises, the resistance Rg of the heating coil 111 also increases, and at the same time, the potential of the terminal field of the bridge circuit also rises. The resistance Rg of the heating coil is the first
When reaching R8 in the figure, comparator C1 generates an output signal. The output signal of 2 operates the first relay driving device 5 through the OR circuit 5 and the delay circuit 4, and the operation of this driving device causes the V-coil to be activated only during the output time of the driving device's one-piece rotary pipebrator. RL is excited. Relay coil k RLIO excitation activates the relay and its contact r
4 Open to cut off the heating current and stop ultra-rapid heating. On the other hand, the output of the comparator Q is amplified by the amplifier 6 and 9 to excite the coil RL of the second relay. When the second relay is activated, its contacts r41 and r/ab are closed, and the second relay is self-maintained at r14@K, and the aforementioned second circuit is formed at r4b. When the output of the one-shot multivibrator of the driving device 5 is completed, the first
The relay returns and its contact r4 closes again, allowing heating current to flow through the glow pulse again. The temperature of the glow plug drops when the heating is stopped earlier, but the temperature rises again due to this reheating, and the resistance +m Rg of the heating coil increases.
Voltage noise at second bridge circuit terminal & C cabinet increases*k
When go* reaches the value RN in FIG. 1, the comparator C3 outputs an output signal, and this output polarization operates the relay m-tai device via the OR circuit 5 and the delay circuit 4. When the relay drive device is activated, the first relay is activated only during the output of the multi-vibrator, and the heating circuit is opened by relay contact r4 to stop heating. Thereafter, the relay contact r40 is repeatedly opened and closed by the intermittent output of the IJ relay drive device, and the temperature of the combustion chamber is maintained at the preheating set temperature.
以上、詳細に説明したように、本発明に係るグロープラ
グの制御装置によれば、グロープラグの加熱を2段階に
区分し、始めの第1段目の加熱は急速加熱時における予
熱設定温f Ts K対応する夛ロープラグの抵抗値R
sを検知して加熱制御し、第2段目の加熱は緩速加熱に
おける予熱設定温[Tsに対応するグロープラグの抵抗
値RNを検知して加熱制御するようにしたので、グロー
プラグの加熱過ぎによる発熱コイルの断線や溶断等のグ
ロープラグの耐久性の劣化を防ぎ、グロープラグの安定
した加熱が得られる。As described above in detail, according to the glow plug control device according to the present invention, the heating of the glow plug is divided into two stages, and the first stage heating is performed at the preheating set temperature f during rapid heating. Ts K Resistance value R of corresponding Takuro plug
s is detected to control the heating, and the second stage heating is performed by detecting the resistance value RN of the glow plug corresponding to the preheating set temperature [Ts in slow heating. This prevents deterioration in the durability of the glow plug, such as disconnection or fusing of the heating coil due to overheating, and provides stable heating of the glow plug.
第1図は急速加熱の場合と緩速加熱の場合のグロープラ
グの抵抗と予熱温度の関係を示す図、第2wrは本発明
に係るグロープラグの制御回路図、Eo・・・電源、1
・・・グロープラグ、R・・・・電流検出用抵抗、c、
e c、・・・比較器、RLI * RLI・・・第
1、第2リレーコイル、r4.r−1rムb・・・第1
、第2リレーの接点、R1e R1* Rj * R4
・・・抵抗、5・・・OR回路、4・・・遅延回路、5
・・・リレー駆動装置、6・・・増巾器特許出願人 い
すソ自動車株式会社
代理人 弁塩士辻 實
外2名Fig. 1 is a diagram showing the relationship between glow plug resistance and preheating temperature in the case of rapid heating and slow heating, 2nd wr is a control circuit diagram of the glow plug according to the present invention, Eo...power supply, 1
...Glow plug, R...Resistor for current detection, c,
e c, ... comparator, RLI * RLI ... first and second relay coils, r4. r-1r m b...1st
, second relay contact, R1e R1* Rj * R4
...Resistance, 5...OR circuit, 4...Delay circuit, 5
... Relay drive device, 6... Multiplier patent applicant Isuso Jidosha Co., Ltd. agent Tsuji Benshioji 2 people
Claims (2)
熱体會有するグロープラグと、電流検出用抵抗と、信号
が印加され・九と1WA路が開かれる常閉型の電流制御
素子とt電源に対して直列に接続するグロープラグ加熱
回路にあって、電流検出用抵抗の両港に発生する電圧を
もとに発熱体の抵抗値を演算すゐ第1と籐2の演算装置
を有し、誼第1と3112(D演算装置の各々の演算結
果が予め設定され危値以上になったとき出力を出す第1
と第2の比較器と、前記籐1と第20比較器のいずれか
が出力信号を発したと11#I出力信号を受けて作動す
ゐ前記電流制御素子を駆動する駆動装置と、前記第20
演算装置を前記グロープラグ加熱回路に並列に像絖する
常Mal電流制御素子と、前le第1の比較器の信号を
受けて作動し、かつ第10比較器の信号が停止して4自
己保持する前記常開飄電流制御素子會駆動する駆動装置
を有することtlI黴とする急加熱グロープラグの制御
装置。(1) A glow plug with a heating element whose resistance value changes according to changes in heating temperature, a current detection resistor, a normally closed current control element to which a signal is applied and the 9 and 1 WA paths are opened, and t. A glow plug heating circuit that is connected in series to a power source has calculation devices No. 1 and No. 2 that calculate the resistance value of the heating element based on the voltage generated at both ports of the current detection resistor. 1st and 3112 (1st part that outputs when the calculation result of each D calculation unit exceeds a preset critical value)
and a second comparator; a drive device that drives the current control element and operates upon receiving the 11#I output signal when either the rattan 1 or the 20th comparator issues an output signal; 20
The arithmetic unit is connected in parallel to the glow plug heating circuit, and operates in response to the signal from the first comparator, and when the signal from the tenth comparator stops, 4 self-holding is performed. A control device for a rapid heating glow plug, comprising a drive device for driving the normally open current control element assembly.
〕大きくシ次善許霧求の範−嬉1項記載の急加熱グロー
プラグの制御装量。(2) The setting value of the first comparator is set to be larger than the setting value of the 20th comparator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10206981A JPS585475A (en) | 1981-06-30 | 1981-06-30 | Controller for quick-heating glow plug |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10206981A JPS585475A (en) | 1981-06-30 | 1981-06-30 | Controller for quick-heating glow plug |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS585475A true JPS585475A (en) | 1983-01-12 |
Family
ID=14317470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10206981A Pending JPS585475A (en) | 1981-06-30 | 1981-06-30 | Controller for quick-heating glow plug |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS585475A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5476735A (en) * | 1977-11-29 | 1979-06-19 | Isuzu Motors Ltd | Device of controlling preheating plug of engine |
-
1981
- 1981-06-30 JP JP10206981A patent/JPS585475A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5476735A (en) * | 1977-11-29 | 1979-06-19 | Isuzu Motors Ltd | Device of controlling preheating plug of engine |
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