JPS6324152B2 - - Google Patents
Info
- Publication number
- JPS6324152B2 JPS6324152B2 JP56044294A JP4429481A JPS6324152B2 JP S6324152 B2 JPS6324152 B2 JP S6324152B2 JP 56044294 A JP56044294 A JP 56044294A JP 4429481 A JP4429481 A JP 4429481A JP S6324152 B2 JPS6324152 B2 JP S6324152B2
- Authority
- JP
- Japan
- Prior art keywords
- glow plug
- relay
- temperature
- energization
- current
- 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
Links
- 238000004880 explosion Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 230000007420 reactivation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000013021 overheating 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
- 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
Description
【発明の詳細な説明】
本発明は、デイーゼル機関などの内燃機関に装
着されるグロープラグの温度を瞬時に機関の完爆
温度に昇温させると共に昇温後該グロープラグ温
度を最適に制御するための通電制御装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention instantly raises the temperature of a glow plug installed in an internal combustion engine such as a diesel engine to the complete explosion temperature of the engine, and optimally controls the temperature of the glow plug after the temperature rise. The present invention relates to an energization control device for.
予熱のため当初グロープラグへ大電流を供給し
て急速昇温させ、該グロープラグが所定温度に昇
温後は温度維持のため小電流を供給して、一定時
間グロープラグを所定温度に維持するグロープラ
グの通電制御装置が提案され、予熱時間の短縮が
図られているが、かかる通電制御装置においても
通常10秒間程度の予熱時間が必要であり、デイー
ゼル機関の欠点となつている。かかる欠点を解消
するためには予熱時間を１秒〜２秒程度に短縮す
ればよいが、かかる急速な昇温速度を採用すると
グロープラグの温度を上記機関の完爆に必要な適
当温度（通常800℃〜1000℃）に止めることが困
難となり、1200℃以上への過昇温による発熱体の
溶断などトラブルが発生した。なお完爆とは機関
燃焼室で着火および燃焼が正常に行なわれる状態
をいう。 For preheating, a large current is initially supplied to the glow plug to rapidly raise the temperature, and after the glow plug reaches a predetermined temperature, a small current is supplied to maintain the temperature to maintain the glow plug at a predetermined temperature for a certain period of time. A glow plug energization control device has been proposed to shorten the preheating time, but even such a energization control device usually requires a preheating time of about 10 seconds, which is a drawback of diesel engines. In order to eliminate this drawback, the preheating time can be shortened to about 1 to 2 seconds, but if such a rapid temperature increase rate is adopted, the temperature of the glow plug can be adjusted to the appropriate temperature required for complete explosion of the engine (normally It became difficult to keep the temperature at 800℃ to 1000℃, and problems such as heating elements melting due to excessive temperature rise to 1200℃ or higher occurred. A complete explosion is a state in which ignition and combustion occur normally in the engine combustion chamber.
本発明の目的は、予熱時間を１〜２秒以下に短
縮でき、予熱のための待ち時間を省略しグロープ
ラグへの通電開始と同時にスタータ・モータへの
通電が開始できるグロープラグ通電制御装置を提
供すること、およびかかる装置においてグロープ
ラグの温度制御が容易で過昇温が確実に防止でき
るグロープラグの通電制御装置の提供することに
ある。 An object of the present invention is to provide a glow plug energization control device that can shorten the preheating time to 1 to 2 seconds or less, eliminate the waiting time for preheating, and start energizing the starter motor at the same time as the glow plug starts energizing. Another object of the present invention is to provide a glow plug energization control device that can easily control the temperature of the glow plug and reliably prevent excessive temperature rise in such a device.
つぎに本発明を図に示す一実施例に基づき説明
する。 Next, the present invention will be explained based on an embodiment shown in the drawings.
第１図はデイーゼル機関の予熱装置を示し、Ｖ
はバツテリ、Ｇはグロープラグ、Ｓはキースイツ
チ、GLはキースイツチのグロープラグ通電用端
子、STはキースイツチのスタータ・モータ通電
用端子、１は本発明にかかるグロープラグの通電
制御装置である。通電制御装置１は、グロープラ
グＧに大電流を供給するための通電制御リレー
と、グロープラグＧの昇温速度を温度制御が容易
な範囲とするための電流制御用抵抗R1を介して
電流を流す通電制御リレーと、設定温度に昇温
後のグロープラグを保温するため前記電流制限用
抵抗R1とR2との合成抵抗を介して電流を流す通
電制御リレーと、前記のリレー，，の開
閉時間を制御する制御回路２と、グロープラグＧ
に直列接続されたグロープラグの温度検出装置３
である抵抗R3とからなる。前記制御回路２は第
２図に示す如く、グロープラグＧの温度検出装置
からの温度信号ｔと設定した機関の完爆下限温度
t1とを入力としてリレーを制御する比較器C1
と、前記比較器C1の出力信号で制御され、設定
した機関の完爆適当温度t2に上昇させるよう適当
な時間出力し前記リレーを制御するタイマー
T1と、グロープラグＧへの通電信号を入力とし、
リレーを制御するタイマT2からなる。本実施
例では、タイマT2は第６図に示す如く、時定数
決定のためのRC充電回路１１と抵抗R11とR12と
からなる基準電圧設定用回路１２とコンデンサＣ
の放電回路１３を形成するトランジスタQ1とコ
ンパレータC3とからなる。 Figure 1 shows the preheating device of a diesel engine.
is a battery, G is a glow plug, S is a key switch, GL is a glow plug energizing terminal of a key switch, ST is a starter/motor energizing terminal of a key switch, and 1 is a glow plug energization control device according to the present invention. The energization control device 1 controls current through an energization control relay for supplying a large current to the glow plug G and a current control resistor R 1 for controlling the temperature increase rate of the glow plug G within a range where temperature control is easy. an energization control relay that causes current to flow through a combined resistance of the current limiting resistors R 1 and R 2 in order to keep the glow plug warm after the temperature has been raised to a set temperature, and the aforementioned relay, control circuit 2 for controlling the opening/closing time of the glow plug G;
Glow plug temperature detection device 3 connected in series with
It consists of a resistor R3 . As shown in FIG. 2, the control circuit 2 receives the temperature signal t from the temperature detection device of the glow plug G and the set lower limit temperature of the engine
Comparator C 1 that controls the relay with t 1 and input
and a timer which is controlled by the output signal of the comparator C1 and controls the relay by outputting an output for an appropriate time so as to raise the temperature to the set temperature t2 suitable for complete explosion of the engine.
Input T 1 and the energization signal to glow plug G,
It consists of a timer T2 that controls the relay. In this embodiment, as shown in FIG. 6, the timer T2 includes an RC charging circuit 11 for determining a time constant, a reference voltage setting circuit 12 consisting of resistors R11 and R12 , and a capacitor C.
It consists of a transistor Q 1 and a comparator C 3 forming a discharge circuit 13.
つぎに上記通電制御装置１の作動を第４図の波
形図と共に説明する。 Next, the operation of the energization control device 1 will be explained with reference to the waveform diagram in FIG. 4.
運転者は機関を始動するため第４図イに示す如
くキースイツチＳを端子STに投入すると、ロに
示すように比較器C1およびタイマT2はハイレベ
ルの出力を生じ第４図ニに示す如くリレーと
はONされ、グロープラグＧの通電とスタータ・
モータへの通電が同時もしくはほゞ同時に開始さ
れる。グロープラグＧは、リレーを介して直接
バツテリと接続されるため大電流が供給される。
この時の昇温速度が400℃／秒〜800℃／秒程度に
設定されているのでグロープラグＧは第４図ハに
示す如く、機関の完爆下限温度t1（600℃〜800℃）
まで１秒程度で急激に温度が上昇する。グロープ
ラグＧがほゞ該下限温度t1に到達すると比較器C1
の出力がロウレベルに反転するのでリレーは
OFFとなる。この比較器C1の出力で、タイマー
T1が作動し、リレーをONにして、通電制御抵
抗R1を介してグロープラグＧは通電される。こ
の間のグロープラグＧの昇温速度は前記t1までの
上昇特性に比べ、1/4〜2/3程度にゆるやかになり
凡そ100℃／秒〜200℃／秒程度の昇温速度とされ
る。こうすることによつて温度制御の精度が容易
に保証できる。タイマーT1の作用でグロープラ
グＧが完爆適当温度t2（800〜1000℃）迄昇温させ
るとタイマT1はOFFとなりリレーはOFFする。
リレーがOFFとなると、リレーはR1＋R2の
合成抵抗でグロープラグＧへ通電をし、グロープ
ラグ温度をほゞ所定温度t2に保持する。 When the driver turns on the key switch S to the terminal ST as shown in Figure 4A to start the engine, the comparator C1 and timer T2 produce high level outputs as shown in Figure 4D, as shown in Figure 4D. The relay is turned on, and the glow plug G is energized and the starter is turned on.
Energization to the motors is started simultaneously or almost simultaneously. Since the glow plug G is directly connected to the battery via a relay, a large current is supplied to the glow plug G.
Since the temperature increase rate at this time is set to about 400°C/sec to 800°C/sec, the glow plug G reaches the engine's lower limit temperature for complete explosion t 1 (600°C to 800°C), as shown in Figure 4 C.
The temperature rises rapidly in about 1 second. When the glow plug G almost reaches the lower limit temperature t1 , the comparator C1
Since the output of is inverted to low level, the relay is
It becomes OFF. At the output of this comparator C 1 , the timer
T 1 is activated, turning on the relay and energizing the glow plug G via the energization control resistor R 1 . During this time, the temperature increase rate of the glow plug G is approximately 1/4 to 2/3 slower than the temperature increase characteristic up to t 1 , and is approximately 100℃/sec to 200℃/sec. . By doing so, the accuracy of temperature control can be easily guaranteed. When the temperature of the glow plug G is raised to the temperature t2 (800 to 1000°C) suitable for complete explosion by the action of the timer T1 , the timer T1 is turned off and the relay is turned off.
When the relay is turned off, the relay energizes the glow plug G with the combined resistance of R 1 +R 2 and maintains the glow plug temperature at approximately the predetermined temperature t 2 .
機関は、グロープラグが完爆下限温度T1に昇
温した時点もしくはそれより１〜２秒後に燃焼室
内での爆燃により自力回転し始め、始動は完了す
るが、運転者がキースイツチＳはGL端子に接続
しておくことにより、グロープラグＧはアフター
グローのためタイマT2の設定時限の間完爆に必
要な温度を保持し始動直後のスムーズな運転を保
障する。 The engine begins to rotate on its own due to deflagration in the combustion chamber when the glow plug reaches the lower limit temperature for complete explosion T1 , or 1 to 2 seconds after that temperature, and the engine starts to complete, but when the driver presses the key switch S to the GL terminal. By connecting the glow plug G to afterglow, it maintains the temperature necessary for complete explosion for the time set by timer T2 , ensuring smooth operation immediately after startup.
タイマT2によるリレーを介してのグロープ
ラグＧへの通電は端子STへの接続時点からタイ
マT2に設定時限の終了までなされるが、設定時
限更新のための放電回路１３を設けることによ
り、機関の始動後運転者がキースイツチを端子
STから端子GLにもどした時点で設定時限T11が
開始され、この期間がアフターグローとなる。第
３図に本考案の他の実施例を示し、その動作を第
５図に示す。これは前記リレーの動作をタイマ
ーT3で制御する場合である。キースイツチをST
にするとタイマT3は、グロープラグの印加電圧
を検出し、印加電圧に応じてリレーをONに
し、グロープラグを急速に加熱する。タイマー
T3がOFFになるとこの信号を入力としてタイマ
ーT4が作動し、グロープラグへ通電制御抵抗R1
を介して、グロープラグへ通電する。通電時間
は、グロープラグへの印加電圧に応じて成されt2
まで上昇させる。t2まで上昇するとリレーは
OFFとなる。リレーはキースイツチONと同時
にタイマーT2の作用でONしており、通電制御抵
抗R1＋R2でグロープラグへ通電し、グロープラ
グ温度をt2に維持する。これらのタイマーは、グ
ロープラグの電圧を検出して通電時間を決定する
電圧制御タイマーで説明したが、これに拘われる
ことなく、実状に沿つて時限を固定してもよい。 The glow plug G is energized by the timer T 2 via the relay from the time of connection to the terminal ST until the end of the time set in the timer T 2 , but by providing a discharge circuit 13 for updating the set time, After the engine starts, the operator turns on the key switch.
The set time period T11 starts when ST returns to terminal GL, and this period becomes afterglow. Another embodiment of the present invention is shown in FIG. 3, and its operation is shown in FIG. This is the case when the operation of the relay is controlled by timer T3 . ST key switch
When set, timer T3 detects the voltage applied to the glow plug, turns on the relay according to the applied voltage, and rapidly heats the glow plug. timer
When T 3 turns OFF, timer T 4 operates using this signal as input, and current is passed to the glow plug through control resistor R 1
energize the glow plug via the The energization time is determined according to the voltage applied to the glow plug t 2
rise to. When t rises to 2 , the relay is
It becomes OFF. The relay is turned on by the action of timer T2 at the same time as the key switch is turned on, and the glow plug is energized by the energization control resistor R1 + R2 to maintain the glow plug temperature at t2 . Although these timers have been described as voltage-controlled timers that detect the voltage of the glow plug and determine the energization time, the time limit may be fixed depending on the actual situation without being limited to this.
以上述べた如く本発明にかかるグロープラグの
通電制御装置は、グロープラグに大電流を供給す
るための通電制御リレーと、グロープラグの昇
温速度を温度制御が容易な範囲とするための電流
制限用抵抗を介して電流を流す通電制御リレー
と、設定温度に昇温後のグロープラグを保温する
ため電流制限用抵抗を介して電流を流す通電制御
リレーと、前記のリレー，，の開閉時間
を制御する制御回路とからなり、グロープラグを
瞬間的に完爆に必要な下限温度まで昇温させ、該
下限温度から適当温度までは昇温速度を低めてグ
ロープラグの温度制御を容易にして該グロープラ
グの過昇温を防止しているので、予熱時間は１〜
２秒以下に短縮でき、予熱のための待ち時間を省
略しグロープラグへの通電開始と同時にスター
タ・モータへの通電が開始可能であると共にグロ
ープラグの温度制御が容易で過昇温が確実に防止
できる。 As described above, the glow plug energization control device according to the present invention includes an energization control relay for supplying a large current to the glow plug, and a current limiter for controlling the temperature increase rate of the glow plug to a range where temperature control is easy. An energization control relay that causes current to flow through a current limiting resistor, an energizing control relay that causes current to flow through a current limiting resistor to keep the glow plug warm after it has risen to a set temperature, and the opening/closing time of the aforementioned relays. It consists of a control circuit that instantly raises the temperature of the glow plug to the lower limit temperature required for complete explosion, and then lowers the temperature increase rate from the lower limit temperature to an appropriate temperature, making it easier to control the temperature of the glow plug. Preheating time is 1 to 1 to prevent overheating of the glow plug.
The time can be shortened to less than 2 seconds, eliminating the waiting time for preheating, making it possible to start energizing the starter motor at the same time as energizing the glow plug, and making it easy to control the temperature of the glow plug to ensure that there is no excessive temperature rise. It can be prevented.
第１図、第３図は本発明のグロープラグの通電
制御装置を備えたデイーゼル機関の予熱装置の概
略図、第２図は通電制御装置のブロツク図、第４
図、第５図は作動説明のための波形図、第６図は
放電回路付タイマT1の回路図である。
１……グロープラグの通電制御装置、２……制
御回路、，，……リレー。
1 and 3 are schematic diagrams of a preheating device for a diesel engine equipped with a glow plug energization control device according to the present invention, FIG. 2 is a block diagram of the energization control device, and FIG.
5 is a waveform diagram for explaining the operation, and FIG. 6 is a circuit diagram of the timer T1 with a discharge circuit. 1... Glow plug energization control device, 2... Control circuit, ,... Relay.
Claims (1)
と、 前記グロープラグへ直接大電流を供給する急速
昇温用通電リレーを備え前記温度検出手段の信
号に基いて前記通電リレーを通電制御し前記グ
ロープラグの温度を完爆下限温度t1にするリレー
制御手段と、 電流制限用抵抗R1を介して前記グロープラグ
へ電流を供給する通電リレーを備え前記リレー
制御手段による前記通電リレーへの通電終了
後前記温度検出手段の信号に基いて設定される時
間前記通電リレーを通電し、前記グロープラグ
を完爆温度にするタイマT1と、 前記グロープラグへの通電開始とともに作動を
開始し設定時限の間出力するタイマT2と、 前記タイマT2の作動中に前記電流制限用抵抗
R1と前記電流制限用抵抗R1に直列に設けられた
電流制限用抵抗R2とを介して前記グロープラグ
へ電流を供給する通電制御リレーと、 スタータモータへの通電信号により前記タイマ
T2を再作動し、スタータモータへの通電信号が
停止してから設定時限の間アフターグローをさせ
る再作動手段と からなるグロープラグの通電制御装置。 ２ 前記リレーＩ制御手段は前記温度検出手段の
信号に基づいて通電リレーにより前記グロープ
ラグを通電する比較器C1であることを特徴とす
る特許請求の範囲第１項記載のグロープラグの通
電制御装置。 ３ 前記リレー制御手段は前記前記温度検出手
段の信号に基づいて設定される時間前記通電リレ
ーにより前記グロープラグを通電するタイマ
T3であることを特徴とする特許請求の範囲第１
項記載のグロープラグの通電制御装置。 ４ 前記電流制限用抵抗R1と前記電流制限用抵
抗R2には一体化された３端子型レジスターが用
いられることを特徴とする特許請求の範囲第１項
ないし第３項のいずれかに記載のグロープラグの
通電制御装置。 ５ 前記グロープラグへの通電時の昇温速度は、
前記通電リレーを介して行われる場合には200
℃／秒以上であり、前記通電制御リレーを介し
て行われる場合には前記通電リレーを介して行
われる場合の昇温速度の90％以下であることを特
徴とする特許請求の範囲第１項ないし第３項のい
ずれかに記載のグロープラグの通電制御装置。[Scope of Claims] 1. The temperature detection means includes: a rapid temperature increase glow plug; a temperature detection means for detecting the temperature of the glow plug; and a rapid temperature increase energization relay that supplies a large current directly to the glow plug. relay control means that controls energization of the energizing relay based on a signal to bring the temperature of the glow plug to a lower limit temperature t1 ; and a energizing relay that supplies current to the glow plug via a current limiting resistor R1 . a timer T1 that energizes the energizing relay for a time set based on a signal from the temperature detecting means after the end of energization of the energizing relay by the relay control means to bring the glow plug to the complete explosion temperature; a timer T 2 that starts operating when electricity starts flowing to the glow plug and outputs an output for a set time period; and a timer T 2 that outputs an output for a set time period;
an energization control relay that supplies current to the glow plug via R 1 and a current-limiting resistor R 2 provided in series with the current-limiting resistor R 1 ;
A glow plug energization control device comprising a reactivation means for reactivating T2 and causing afterglow for a set time period after the energization signal to the starter motor stops. 2. The glow plug energization control according to claim 1, wherein the relay I control means is a comparator C1 that energizes the glow plug by means of an energization relay based on a signal from the temperature detection means. Device. 3. The relay control means is a timer for energizing the glow plug by the energization relay for a time set based on a signal from the temperature detection means.
Claim 1 characterized in that T 3
The glow plug energization control device described in . 4. According to any one of claims 1 to 3, an integrated three-terminal resistor is used for the current limiting resistor R1 and the current limiting resistor R2 . energization control device for glow plugs. 5 The temperature increase rate when the glow plug is energized is:
200 if done through said energizing relay
C/sec or more, and when carried out via the energization control relay, the rate of temperature increase is 90% or less of the temperature increase rate when carried out via the energization relay. The glow plug energization control device according to any one of items 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4429481A JPS57159963A (en) | 1981-03-25 | 1981-03-25 | Electric conduction controller of glow plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4429481A JPS57159963A (en) | 1981-03-25 | 1981-03-25 | Electric conduction controller of glow plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57159963A JPS57159963A (en) | 1982-10-02 |
| JPS6324152B2 true JPS6324152B2 (en) | 1988-05-19 |
Family
ID=12687483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4429481A Granted JPS57159963A (en) | 1981-03-25 | 1981-03-25 | Electric conduction controller of glow plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57159963A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6429273U (en) * | 1987-08-14 | 1989-02-21 | ||
| US11739693B2 (en) | 2020-11-18 | 2023-08-29 | Pratt & Whitney Canada Corp. | Method and system for glow plug operation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55114877A (en) * | 1979-02-26 | 1980-09-04 | Diesel Kiki Co Ltd | Auxiliary starter of diesel engine |
| JPS5685568A (en) * | 1979-12-15 | 1981-07-11 | Mazda Motor Corp | Apparatus for passing electric current through glow plug of diesel engine |
-
1981
- 1981-03-25 JP JP4429481A patent/JPS57159963A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55114877A (en) * | 1979-02-26 | 1980-09-04 | Diesel Kiki Co Ltd | Auxiliary starter of diesel engine |
| JPS5685568A (en) * | 1979-12-15 | 1981-07-11 | Mazda Motor Corp | Apparatus for passing electric current through glow plug of diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57159963A (en) | 1982-10-02 |
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