JPS59201934A - Removing device of adhesive substance of ignition timing sensor - Google Patents
Removing device of adhesive substance of ignition timing sensorInfo
- Publication number
- JPS59201934A JPS59201934A JP7405383A JP7405383A JPS59201934A JP S59201934 A JPS59201934 A JP S59201934A JP 7405383 A JP7405383 A JP 7405383A JP 7405383 A JP7405383 A JP 7405383A JP S59201934 A JPS59201934 A JP S59201934A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- ignition timing
- timing sensor
- sensor
- adhesive substance
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Testing Of Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、元ファイバを利用して簡六時Iυjを検出す
る着火時期センサの付着物除去装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for removing deposits from an ignition timing sensor that detects Iυj using a source fiber.
着火時期センサは機関燃焼室の燃焼光を機関外部へ伝搬
させるが、時間経過に伴って人ソCF′X15にカーボ
ン等が何着し、このため入光:j1が減少し、善人時期
の検出が遅れるというシふ′、1かあつ1、:。The ignition timing sensor propagates the combustion light in the engine combustion chamber to the outside of the engine, but as time passes, carbon etc. adhere to the CF' If there is a delay, 1 or 1:.
本発明の目的は、入光ごl(におけるイ・」着物を適切
に除去することがてきるWrf穴時期センサのイ・1着
物除去装置を提供することである。An object of the present invention is to provide a kimono removal device for a Wrf hole timing sensor that can appropriately remove kimono when light enters the sensor.
この目的を達成するために本発明のイ・J若物除去装置
によれば、センサの入ツG側の端3[りにヒータが設け
られ、このヒータを600〜700°Cに保持して入光
部における付着物を焼き切って除去する。In order to achieve this object, according to the I/J young object removing device of the present invention, a heater is provided at the end 3 on the inlet G side of the sensor, and this heater is maintained at 600 to 700°C. Burn off and remove the deposits on the light entrance area.
600°CよりイItい温度では付着物を焼き切ること
が難しく、700’Cより高い畠度ては着火時期センサ
が劣化するおそれがある。本発明により;j:f穴時期
センサの劣化等の支障を起こすことなく、イxJ督物を
効率良く除去することができる。At temperatures higher than 600°C, it is difficult to burn off the deposits, and at temperatures higher than 700°C, the ignition timing sensor may deteriorate. According to the present invention, it is possible to efficiently remove the IxJ obstruction without causing problems such as deterioration of the j:f hole timing sensor.
好ましくは保持手段は、ヒータが600’Cより低温に
なるとヒータを通電し、ヒータが700’Cより高温に
なるとヒータの通電を中1]−,する。Preferably, the holding means energizes the heater when the temperature of the heater becomes lower than 600'C, and de-energizes the heater when the temperature of the heater becomes higher than 700'C.
付着物除去用ヒータはクロー用ヒータを兼ねることかで
き、これによりグロープラクを省略することもできる。The heater for removing deposits can also serve as a heater for claws, thereby making it possible to omit the glow plaque.
クロー用ヒータとしてはヒータが約900’Cになるこ
ともあるが、数秒の極めて短い時間であるので、着火時
期センサの劣化という支障はない。As a claw heater, the temperature may reach approximately 900'C, but since it is for an extremely short period of several seconds, there is no problem of deterioration of the ignition timing sensor.
01着物の焼き切りはグロー用通′也の終了後から所定
時間経過後に実施される。したがって機関が運転される
ごとに、すなわち適切な間l&%で(’J着物の焼き切
りが行なわれ、かつグロー期間を回避して蓄電池G電圧
が十分に回復している期間をねらって行なわれる。01 The burning of the kimono is carried out after a predetermined period of time has elapsed from the end of the glow use. Therefore, each time the engine is operated, the burnout is performed at l&%('J kimono for an appropriate period of time, and the glow period is avoided and the storage battery G voltage is sufficiently recovered.)
図+fiiを参照して本発明の実Mm例を説明する。An actual Mm example of the present invention will be described with reference to Figure +fii.
第1図の着火時期センサ1においてセン→)一本体2は
その外周面に、スパナ等の工科に係合する六角部4とシ
リンダヘットにねし1茨めされるためのねし溝6とを有
している1、光フアイバ用コネクタ8は、対応のコネク
タにねし1俟めされるためのねし満10と工具に係合す
る六角F;1(12とを有し、介在部オJ’14を介し
てセン→)本体2の出光側の端に同軸的に連結している
。細孔1(iはセンサ本体2、介在部11’ 14 、
およびコネクタ8の中心軸線に沿って形成され、光ファ
イバ18を通されている。ヒータ線20は、入九例の端
部において光ファイバ]8の外周にコイル状に巻かれて
おり、両端において導線22を介してヒータ制御装置2
4へ接続されている。In the ignition timing sensor 1 shown in Fig. 1, the main body 2 has a hexagonal part 4 on its outer circumferential surface that engages with a tool such as a spanner, and a threaded groove 6 for being fitted into the cylinder head. The optical fiber connector 8 has a screw 10 for being screwed into a corresponding connector, and a hexagon F; It is coaxially connected to the light emitting side end of the main body 2 via the OJ'14. Pore 1 (i is sensor main body 2, interposed part 11' 14,
and is formed along the central axis of the connector 8, through which the optical fiber 18 is passed. The heater wire 20 is wound in a coil shape around the outer periphery of the optical fiber 8 at its end, and connected to the heater control device 2 via conductive wires 22 at both ends.
Connected to 4.
第2図は着火時期センサ1の取付状態を示しており、シ
リンダヘッド26には副室28、燃料噴射ノズル用の孔
30、および着火時期センサ1用の孔32が形成されて
いる。着火時期センサ1は孔′32にねし嵌めされ、下
端は副室28へ突出している。着火時期センサ1の入光
端には球面状のレンズ34が取付けられ、燃料噴射ノズ
ルからの11(i対燃料36がレンズ34に当たるよう
にイ゛r穴時期センザ1の下端の位置が設定される1、
レンズ″14は11ζ1射燃刺36により洗浄されるの
で、レンズ34への異物の付着は防止される。FIG. 2 shows the state in which the ignition timing sensor 1 is installed, and the cylinder head 26 is formed with an auxiliary chamber 28, a hole 30 for a fuel injection nozzle, and a hole 32 for the ignition timing sensor 1. The ignition timing sensor 1 is press-fitted into the hole '32, and its lower end protrudes into the auxiliary chamber 28. A spherical lens 34 is attached to the light incident end of the ignition timing sensor 1, and the position of the lower end of the ignition timing sensor 1 is set so that the 11 (i) from the fuel injection nozzle hits the lens 34. Ru1,
Since the lens ``14'' is cleaned by the 11ζ1 gun 36, adhesion of foreign matter to the lens 34 is prevented.
第3図はヒータ制御装置の回路図である。各気筒のヒー
タ線20は互いに並列に接続されている。、主継電器:
38および副線電器40は互いに並列な接11セ42.
44を何し、接点44には抵抗45が面列に接続されて
いる。接点42.44は一端において高電曲46に、他
端において抵抗(センシングレジスタ)48を経て並列
接続のヒータ&!20に接続されている。抵抗48にお
ける電圧降下からヒータ線20の温度を検出することが
でき、抵抗48の両端゛電比は端子A、I3を介して電
子制御装置4つへ送られる。なおヒータ線20はり[」
−用ヒータを兼ねている。FIG. 3 is a circuit diagram of the heater control device. The heater wires 20 of each cylinder are connected in parallel to each other. , main relay:
38 and the sub-line electric appliance 40 are connected to each other in parallel with each other.
44, resistors 45 are connected to the contact 44 in a plane row. The contacts 42 and 44 are connected to the high voltage bend 46 at one end and to the heater &! connected in parallel through a resistor (sensing resistor) 48 at the other end. 20. The temperature of the heater wire 20 can be detected from the voltage drop across the resistor 48, and the voltage ratio across the resistor 48 is sent to four electronic control units via terminals A and I3. In addition, the heater wire 20 beam [''
- doubles as a heater.
第4図は電子制御装置4(+の概略図である。FIG. 4 is a schematic diagram of the electronic control device 4 (+).
端子へ、13間の電圧は差動増幅a 50を経てマルチ
プレクサ52へ送られる。マルチプレクサ52はΔ/D
(アナログ/デジタル)安換芥54から制御信号に基
づいて入力を選択してA/D変換藷54へ送る。A/D
変換器54においてA/l) q換されたデータはCP
U 56へ送られ、CI”U56は生絹電器38および
副線電器40を制御する3゜第5図はヒータ制御ルーチ
ンのフ【コーチヤードであるうグロースイッチがオンに
なった時から3秒間だけ主継電器38を経て大電流がヒ
ータ線20に流され、その後は機関冷却水f!ii:
艮1゛wに関係する時間F(Tw)だけ副線電器4oお
よびJlr;抗r(5を経て小電流がヒータ線2oに流
され、グローが行なオつれる。ヒータ線20へのり【]
−用通電がすでに終了し、グロー開始から10分が経過
した時刻に着火時期センサ1の入光F、fllにおける
付着物の焼き切りのためのヒータ線20の通電が13分
間だけ行なわれ、イ・]青物焼き切り用のJ、流が副線
電器40および抵抗45を経て流される。このように付
着物の焼き切りはクロ−期間と重ならないようにかつ蓄
電曲の電圧が十分に回復している期間をねらって行なわ
れる。この3分間では、ヒータ線20の温度が600
’Cより低くなると、ヒータ線2()への通電か始まり
、ヒータ線2071iH度が700°Cより高くなると
ヒータ&!2r、の通電が中止される。ヒータ線2〔の
温度を600〜700°Cに維持する理由は、ヒータ線
20が600°Cより低温であるとセンサ1の入光部と
してのレンズ34における付首物を焼き切ることができ
ず、ヒータ線20が700°Cより高温になると、セン
サlの劣化のおそれがあるからである。ステップ60で
は始動信号が発生したか丙かを判定し、判定が正である
場合のみ以下のステップへ進む。ステップ62ではフラ
グFsをセラl−する。ステップ04では主継電器38
のみをオンにする。The voltage between the terminals 13 and 13 is sent to a multiplexer 52 via a differential amplifier a 50. Multiplexer 52 is Δ/D
(Analog/Digital) An input is selected from the exchange box 54 based on a control signal and sent to the A/D converter 54. A/D
In the converter 54, the A/l) q converted data is converted to CP.
The CI" U56 controls the raw silk appliance 38 and the auxiliary appliance 40. Figure 5 shows the flowchart of the heater control routine. A large current is passed through the main relay 38 to the heater wire 20, and then the engine cooling water f!ii:
A small current is passed through the heater wire 2o through the auxiliary wire 4o and the resistor r(5) for a time F(Tw) related to 艮1゛w, causing a glow and being worn out. ]
- At the time when the energization for the ignition timing sensor 1 has already ended and 10 minutes have passed since the start of the glow, the heater wire 20 is energized for only 13 minutes to burn off the deposits on the incident light F and flll of the ignition timing sensor 1. ] A stream for grilling vegetables is passed through a sub-line electric device 40 and a resistor 45. In this way, the burning off of the deposits is carried out so as not to overlap with the black period and during the period when the voltage of the charge storage circuit has sufficiently recovered. During these three minutes, the temperature of the heater wire 20 is 600.
When the temperature becomes lower than 700°C, the heater wire 2 () starts to be energized, and when the temperature of the heater wire 2071iH becomes higher than 700°C, the heater &! 2r is de-energized. The reason why the temperature of the heater wire 2 is maintained at 600 to 700°C is that if the temperature of the heater wire 20 is lower than 600°C, the attached material on the lens 34 as the light entrance part of the sensor 1 cannot be burned off. This is because if the temperature of the heater wire 20 becomes higher than 700° C., there is a risk that the sensor I will deteriorate. In step 60, it is determined whether a starting signal has been generated or not, and only if the determination is positive, the process proceeds to the following steps. In step 62, the flag Fs is set to zero. In step 04, the main relay 38
Turn on only.
この結果、接点42を経て大電流がヒータ線20へ供給
される、ステップ66では主継電器38をオンにしてか
ら3秒が経過したか盃かを判定し、3秒経過するとステ
ップ68へ進む。ステップ68では主継電器38をオフ
、副線電器40をオンにする。この結果、ヒータ線20
へ’fhlJ継電器40および抵@45を経て流れ、ヒ
ータ電流は減少する。ステップ70ではI剖継電器40
がオンになってからの経過l(!j If−ifTsと
F (Tw )とを比較し、’I’s > F’ (i
’ヤ)になるとステップ72へ進む。た/としF (1
’w )は機関冷却水温度Twの減少関数である5、ス
テップ72ではフラクト゛Sがセラ1−されてから10
分が経過したD)杏かを判定し、判定が市である345
合のみステップ771へ進む。ステップ7/lては7.
継’/J Z438をオフにし、副線電Wa40をオン
にし、フラグFrをセラ1−する。ステップ70では抵
抗(センシングレジスタ)48における電圧降ドvgと
所定値v1とを比較し、Vg > Vlであればステッ
プ74へ戻り、■g≦v1てあればステップ78へ進む
。抵抗48における電圧降下Vgはヒータ線20の温度
に関係し、ヒータ線20の1′!i+!艮が上昇するに
連れてVgは減少し、vlはヒータ線20の600℃に
対応し、ヒータ線20が60+1 ”Cよりイ氏濡にあ
ればVg>Vlとなる。ステップ78ではVgと所定値
v2とを比較し、Vg < Vgてあればステップ80
へ進み、v2≧vgであればステップ82へ進む。ステ
ップ80では主継電器38および副t? ’4 ”l+
440をともにオフにする。この結果、ヒータ線20へ
の通電は中上される。ステップ82ではフラグFrがセ
ットされてから3分紅過したか占かを判定し、判定が正
であればこのブロクラムは終わり、否であればステップ
76へ戻る3、v2はヒータ線20の700°Cに対応
し、ヒータ線20が700°Cより高温にあればVg〉
vgとなる。1As a result, a large current is supplied to the heater wire 20 via the contact 42. In step 66, it is determined whether 3 seconds have elapsed since the main relay 38 was turned on, and when 3 seconds have elapsed, the process proceeds to step 68. In step 68, the main relay 38 is turned off and the auxiliary relay 40 is turned on. As a result, the heater wire 20
through relay 40 and resistor 45, the heater current decreases. In step 70, the I relay 40
Compare l(!j If-ifTs and F (Tw ) since 'I's >F' (i
'Y), the process advances to step 72. Ta/ToshiF (1
'w) is a decreasing function of the engine cooling water temperature Tw, and in step 72, 10
345 minutes have elapsed D) Determine whether it is anzu, and the determination is city.
If so, proceed to step 771. Step 7/l is 7.
Turn off the relay/J Z438, turn on the sub line electric wire Wa40, and set the flag Fr to 1-. In step 70, the voltage drop vg at the resistor (sensing register) 48 is compared with a predetermined value v1, and if Vg>Vl, the process returns to step 74, and if g≦v1, the process proceeds to step 78. The voltage drop Vg across resistor 48 is related to the temperature of heater wire 20; i+! As the temperature rises, Vg decreases, and vl corresponds to 600°C of the heater wire 20, and if the heater wire 20 is wetter than 60+1"C, Vg>Vl. In step 78, Vg is set to a predetermined value. Compare with the value v2, and if Vg < Vg, step 80
If v2≧vg, the process advances to step 82. In step 80, the main relay 38 and the secondary t? '4 ”l+
440 are both turned off. As a result, the current supply to the heater wire 20 is increased. In step 82, it is determined whether the red light has passed for 3 minutes after the flag Fr is set, and if the determination is positive, this block diagram ends, and if not, the process returns to step 76. Corresponding to C, if the heater wire 20 is at a temperature higher than 700°C, Vg>
It becomes vg. 1
第1図は着火時期センサの構造図、第2図は着火時期セ
ンサの取付状態を示す図、第3図はヒータ制御装置の回
路図、第4図は電子制御装置のブIUツク図、第5図は
ヒータ制御ルーチンのフLl−チャー1−である。
1・・・着火時期センサ、18・・・元ファイバ、20
・・・ヒータ線、24・・・ヒータ制御装置、28・・
・副室、:34・・・レンズ。
特訓出願人 1−ヨタ自動屯株式会社代B14人弁理
七 中 平 治
第2図Fig. 1 is a structural diagram of the ignition timing sensor, Fig. 2 is a diagram showing the installation state of the ignition timing sensor, Fig. 3 is a circuit diagram of the heater control device, Fig. 4 is a block diagram of the electronic control device, and Fig. 4 is a block diagram of the electronic control device. FIG. 5 shows feature 1 of the heater control routine. 1... Ignition timing sensor, 18... Original fiber, 20
... Heater wire, 24 ... Heater control device, 28 ...
- Sub-chamber: 34...Lens. Special Training Applicant 1 - Yota Autotun Co., Ltd. Representative B 14 Patent Attorneys 7 Osamu Naka Taira Figure 2
Claims (1)
へ伝搬させて混合気の着火時期を検出する着火時期セン
サにおいて、センサの入光側の嬬F;+t、に設けられ
ているヒータ、およびセンサの入光部における付着物を
焼き切る1祭にヒータを600〜700″Cの範囲に保
持する保持手段を備えていることを特徴とする、着火時
期センサの何イ9物除去装置。 2 保持手段は、ヒータが600°Cより低温になると
ヒータを通’f(’74 シ、ヒータが70(1℃より
1価温になるとヒータの通電を中上することを特徴とす
る特許請求の範囲第1項記載の付着物除去装置を。 3 前記ヒータがクロー用ヒータを兼ねることを特徴と
する特許請求の範囲第1丁〔1記載のイX4着物除去装
置。 4 付着物の焼き切りがグtr−用111電の終了後か
ら所定時間経過後に実施されることを特徴とする特許請
求の範囲第1瑣記、1戊のイ(jf17物除去装置。[Claims] 1. In an ignition timing sensor that detects the ignition timing of an air-fuel mixture by propagating combustion light in an engine combustion chamber to the outside of the engine via an optical fiber, a What kind of ignition timing sensor is it characterized in that it is equipped with a heater provided therein and a holding means that holds the heater in the range of 600 to 700''C during one cycle of burning off the deposits on the light incident part of the sensor? 9 substance removal device. 2 The holding means turns on the heater when the temperature becomes lower than 600°C, and turns off the heater when the temperature becomes lower than 70°C (1°C). A deposit removing device according to claim 1. 3. A kimono removing device according to claim 1, characterized in that the heater also serves as a claw heater. 4 Claims 1(d) and 1(d)(jf17) are characterized in that burning off the deposits is carried out after a predetermined period of time has elapsed from the end of the 111 electric charge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7405383A JPS59201934A (en) | 1983-04-28 | 1983-04-28 | Removing device of adhesive substance of ignition timing sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7405383A JPS59201934A (en) | 1983-04-28 | 1983-04-28 | Removing device of adhesive substance of ignition timing sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59201934A true JPS59201934A (en) | 1984-11-15 |
JPH0436254B2 JPH0436254B2 (en) | 1992-06-15 |
Family
ID=13536057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7405383A Granted JPS59201934A (en) | 1983-04-28 | 1983-04-28 | Removing device of adhesive substance of ignition timing sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59201934A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006526142A (en) * | 2003-03-13 | 2006-11-16 | キストラー ホールディング アクチエンゲゼルシャフト | Automatic clean optical sensor |
JP2012117535A (en) * | 2010-11-30 | 2012-06-21 | General Electric Co <Ge> | Advanced optics and optical access for laser ignition system for gas turbine including aircraft engine |
US9996090B2 (en) | 2013-05-17 | 2018-06-12 | Entegris, Inc. | Preparation of high pressure BF3/H2 mixtures |
-
1983
- 1983-04-28 JP JP7405383A patent/JPS59201934A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006526142A (en) * | 2003-03-13 | 2006-11-16 | キストラー ホールディング アクチエンゲゼルシャフト | Automatic clean optical sensor |
JP2012117535A (en) * | 2010-11-30 | 2012-06-21 | General Electric Co <Ge> | Advanced optics and optical access for laser ignition system for gas turbine including aircraft engine |
US9996090B2 (en) | 2013-05-17 | 2018-06-12 | Entegris, Inc. | Preparation of high pressure BF3/H2 mixtures |
Also Published As
Publication number | Publication date |
---|---|
JPH0436254B2 (en) | 1992-06-15 |
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