JPS6131941A - Knocking preventing device of two-plug ignition engine - Google Patents
Knocking preventing device of two-plug ignition engineInfo
- Publication number
- JPS6131941A JPS6131941A JP15489684A JP15489684A JPS6131941A JP S6131941 A JPS6131941 A JP S6131941A JP 15489684 A JP15489684 A JP 15489684A JP 15489684 A JP15489684 A JP 15489684A JP S6131941 A JPS6131941 A JP S6131941A
- Authority
- JP
- Japan
- Prior art keywords
- knocking
- sensor
- ignition
- load
- engine
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
-
- 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
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
-
- 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
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/225—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines circuit arrangements therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Testing Of Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、１つのシリンダーに２つの点火プラグを取付
けた型式の内燃機関のノッキング防止装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a knock prevention device for an internal combustion engine of the type in which two spark plugs are mounted on one cylinder.
［従来技術］
内燃機関のノッキング現象の発生を自動的に感知してそ
の停止ないし予防処置を講するための手段として従来は
ノッキングの発生に伴なうエンジンシリンダー内圧の変
動をとらえる圧力検知型のノックセンサからの情報に基
づいて燃焼制御を行なう方法がとられていたが、感圧型
のセンサは振動を受けることによってその感度が大幅に
低下し、あるいは不安定化する難点があり、車両搭載エ
ンジンのノッキング防止目的に対して信頼性が欠けてい
た。[Prior Art] As a means of automatically detecting the occurrence of knocking in an internal combustion engine and stopping it or taking preventive measures, a pressure sensing type that detects fluctuations in engine cylinder internal pressure accompanying the occurrence of knocking has conventionally been used. A method of controlling combustion based on information from a knock sensor has been used, but pressure-sensitive sensors have the disadvantage that their sensitivity significantly decreases or becomes unstable when subjected to vibrations, which makes it difficult to control the engine installed in a vehicle. It lacked reliability for the purpose of preventing knocking.
一方では、内燃機関の燃焼室内における混合気の燃焼情
況を把握するための新しい手段として火炎面センサと呼
ばれる計測器が登場してきた。最近のＳＡＥリポート（
アメリカ自動車技術協会報告） Ｎｏ 、８４０４４１
にこの火炎面センサをエンジンシリンダー内のノッキン
グ検知手段として活用できる旨の技術報告がなされてい
る。本願発明はこの文献によって得られた知識に基づい
て完成されたものであるので、第３図にこの文献に載せ
られた火炎面センサの外観図を、また第２図にこのセン
サを組込んだ燃焼排気再循環式のダブルクローズトルー
プエンジンの燃焼制御装置の作動系統図を転載した。こ
こに描かれた火炎面センサは、栓体１００の内腔内に中
心電極１０１を内蔵ｔ’ｈ絶縁体１０２が固定されてお
り電極の形状配置および電極への印加電圧に特徴がある
点を除けば本質的には在来の点火プラグの構造に近類し
ているがその機能は全く相異しており、エンジンのシリ
ンダーヘッドＡに取付けられた点火プラグ３０と対向す
る壁面に取付けられた火炎面センサ３１は、点火プラグ
の点火に伴なって発生した火炎のセンサへの到達を感知
して分析回路３２に報知し、この回路内では、点火プラ
グの点火時期情報に基づいて火炎面が点火プラグからセ
ンサに到達するまでの時間すなわち火炎面到達時間を検
知する。この分析回路には、予め火炎面到達時間とシリ
ンダー内における燃焼状況どの相関性をクランクの回転
角との関連において実験的に求めたデータが記憶されて
いるので、エンジンクランク軸に取付けられたクランク
角報知用円盤３８に対置されたクランク角センサ３９が
その制御回路４０を介して伝えてくるクランク角情報と
火炎面到達時間とを記憶されている基準データとの対比
作業を行なったうえ、点火信号処理回路３３およびディ
ストリビュータ−３４を通じて点火プラグ３０に適切な
点火信号を発する一方、信号比較回路３５を通じてイン
ジェクター３６には最適な燃料噴射量を、また燃焼排気
循環用バルブ３７には最適開度を指示する。４１は電気
回路の電源部である。On the other hand, a measuring instrument called a flame front sensor has been introduced as a new means for understanding the combustion status of the air-fuel mixture in the combustion chamber of an internal combustion engine. Recent SAE reports (
American Society of Automotive Engineers Report) No. 840441
A technical report has been made stating that this flame surface sensor can be used as a means for detecting knocking in engine cylinders. Since the present invention was completed based on the knowledge obtained from this document, Fig. 3 shows an external view of the flame front sensor described in this document, and Fig. 2 shows a diagram incorporating this sensor. The operating system diagram of the combustion control device for a double closed loop engine with combustion exhaust recirculation type has been reproduced. The flame front sensor depicted here has a center electrode 101 built into the inner cavity of a plug body 100 and a t'h insulator 102 fixed thereto, and is characterized by the shape and arrangement of the electrodes and the voltage applied to the electrodes. Other than that, the structure is essentially similar to that of a conventional spark plug, but its function is completely different.It is attached to the wall facing the spark plug 30 attached to the cylinder head A of the engine. The flame surface sensor 31 detects the arrival of the flame generated by the ignition of the spark plug to the sensor and notifies the analysis circuit 32. In this circuit, the flame surface is determined based on the ignition timing information of the spark plug. It detects the time it takes for the spark plug to reach the sensor, that is, the flame front arrival time. This analysis circuit stores in advance experimental data on the correlation between the flame front arrival time and the combustion status in the cylinder in relation to the crank rotation angle. After comparing the crank angle information and flame front arrival time transmitted by the crank angle sensor 39 placed opposite to the angle reporting disk 38 via its control circuit 40 with stored reference data, the ignition An appropriate ignition signal is issued to the ignition plug 30 through the signal processing circuit 33 and the distributor 34, while the optimum fuel injection amount is set to the injector 36 through the signal comparison circuit 35, and the optimum opening degree is set to the combustion exhaust circulation valve 37. Instruct. 41 is a power supply section of the electric circuit.
このような火炎面センサを利用した新しい方式による内
燃機関の燃焼制御方式は、火炎到達時間という唯一の燃
焼関与因子のみをとらえることによって、予め求められ
ている燃焼情況との相関データを基に、点火時期の制御
を通じて、また燃焼排気循環型エンジンの場合には循環
量の制御を介して、数多くの燃焼関与因子の影響力を折
り込み済みの最も合理的なエンジン制御を行なえる可能
性を包蔵しているところに大きな特徴がある。This new combustion control method for internal combustion engines using flame front sensors captures only the flame arrival time, the only factor involved in combustion, and based on correlation data with pre-determined combustion conditions. Through the control of ignition timing and, in the case of combustion exhaust recirculation type engines, control of the amount of recirculation, it has the potential to perform the most rational engine control that takes into account the influences of many combustion-related factors. There is a major characteristic in the fact that it is
以上は前記技術文献記事の概略の紹介であるが、この報
告書にはまた、火炎面センサによって検知される火炎到
達時間と、エンジンのノック現象の発生とは密接な連関
性があり、ノッキングに伴なつでエンジンシリンダー内
圧が急上昇し且つ波動を生ずるとともに、火炎到達時間
が明らかに早まるのでこの現象を基にノックの発生ど判
断され、したがって火炎面センサはノックセンサとして
も役立つことが指摘されている。第４図に４シリンダー
、２０００ｃｃ１燃料噴射式、０）−１ｃ型のエンジン
について計測されたクランク軸の回転に伴なうシリンダ
ー内圧の変動曲線ａおよび火炎面センサ出力の変化曲線
すを示した。横軸はクランク角度、縦軸はシリンダー内
圧およびセンサ出力のレベルを示している。圧力グラフ
の波動はノッキングの発生を示しており、ノッキング現
象に伴なうセンサ出力の急激な変動は、火炎面センサが
ノックセンサとしても機能し得ることを示唆している。The above is an overview of the technical literature article mentioned above, but this report also states that there is a close relationship between the flame arrival time detected by the flame surface sensor and the occurrence of engine knocking, and that knocking The internal pressure of the engine cylinder rises rapidly and causes waves, and the time it takes for the flame to reach the engine is clearly accelerated. Based on this phenomenon, it is determined that knock has occurred, and it has been pointed out that the flame front sensor can also be used as a knock sensor. There is. FIG. 4 shows a variation curve a of the cylinder internal pressure and a variation curve of the flame front sensor output due to the rotation of the crankshaft, which were measured for a 4-cylinder, 2000cc 1 fuel injection type, 0)-1c type engine. The horizontal axis shows the crank angle, and the vertical axis shows the cylinder internal pressure and sensor output level. Waves in the pressure graph indicate the occurrence of knocking, and the rapid fluctuations in sensor output accompanying the knocking phenomenon suggest that the flame front sensor can also function as a knock sensor.
しかし上記の文献に開示されたエンジンの燃焼制御技術
には、２プラグ点火機関の制御方法については触れられ
ておらず、またノック防止を含めて燃焼制御用の専用セ
ンサを必要とするところに技術改良の余地が残されてい
る。However, the engine combustion control technology disclosed in the above-mentioned document does not mention a control method for a two-plug ignition engine, and the technology requires a dedicated sensor for combustion control, including knock prevention. There is still room for improvement.
［技術課題］
従来技術の項でずでに述べたように、最近アメリカの技
術文献に紹介された、点火プラグと基本的には共通した
構造を有し、エンジンシリンダー内の燃焼状況を総合的
に把握する能力に優れた火炎面センサなるものが、ノッ
キングＩＡ＆の発生検知にも役立つとの報告にヒントを
得、１つのシリンダーに２つの点火プラグを取付けた２
プラグ点火機関についてモの一方の点火プラグをエンジ
ン作動中のある限られた時期に限ってノックセンサ機能
に切換えさせる方法を講じることによって、２プラグ点
火機関の特徴である着火性能の優秀さを生かすと同時に
今まで使われてぎたノッキング感知専用のノックセンサ
を不要化し、しかも在来のノックセンサの欠点であった
高速運転時の振動等による悪魔低下問題を解消しようと
することが本発明の技術課題である。[Technical Issues] As mentioned above in the section on prior art, spark plugs that have been recently introduced in American technical literature have basically the same structure as spark plugs, and are designed to comprehensively monitor the combustion situation inside an engine cylinder. Inspired by a report that a flame surface sensor with excellent ability to detect the occurrence of knocking IA is also useful for detecting the occurrence of knocking IA, we installed two spark plugs in one cylinder.
For plug ignition engines, we take advantage of the excellent ignition performance that characterizes two-plug ignition engines by devising a method that switches one spark plug to the knock sensor function only during a limited period of time during engine operation. At the same time, the technology of the present invention eliminates the need for the dedicated knock sensor that has been used up until now, and also solves the problem of poor degradation due to vibrations during high-speed driving, which was a drawback of conventional knock sensors. This is a challenge.
［技術手段］
本発明装置の基本構成を構成概念図としての第１図によ
って説明すると、エンジンのシリンダーヘッドＡの燃焼
室内にそのシリンダー軸に対して対称または非対称位置
に取付けられた火炎面センサ機能を備えた１組の点火プ
ラグ１および２はそれぞれディストリビュータ−３，４
と点火コイル５．６と点火駆動回路７．８を経て点火時
期制御回路１５に接続されている。一方、点火プラグ本
来の役割の他に、ノッキング発生感知能力を備えた火炎
面センサとしての役目も果させるための点火プラグ２に
は、その放電電流供給回路にリレースイッチ９が、また
火炎面センサとしての作動用電源部１１への接続回路に
もリレースイッチ１０が介在され、この両スイッチは連
動関係に置かれる。火炎面センサ用電源部１１はノッキ
ング検知回路１２を経て点火時期制御回路１５につらな
る。またエンジンの吸気負圧センサ１３は点火時期制御
回路１５につらなるとともに、負圧水準の検定回路１４
を介して、２つのリレースイッチ９および１０のオン−
オフ用リレー１６にも接続する。１７は点火プラグの電
源部、１８はエンジンシリンダ一群である。[Technical Means] The basic configuration of the device of the present invention will be explained with reference to FIG. 1 as a conceptual diagram. The flame front sensor function is installed in the combustion chamber of the cylinder head A of the engine at a symmetrical or asymmetrical position with respect to the cylinder axis. A pair of spark plugs 1 and 2 are connected to distributors 3 and 4, respectively.
The ignition timing control circuit 15 is connected to the ignition timing control circuit 15 via an ignition coil 5.6 and an ignition drive circuit 7.8. On the other hand, in addition to the original role of the ignition plug, the ignition plug 2 is also equipped with a relay switch 9 in its discharge current supply circuit, and a flame surface sensor. A relay switch 10 is also interposed in the connection circuit to the operating power source 11, and these two switches are placed in an interlocking relationship. The flame surface sensor power supply section 11 is connected to an ignition timing control circuit 15 via a knocking detection circuit 12. In addition, the engine intake negative pressure sensor 13 is connected to the ignition timing control circuit 15, and the negative pressure level verification circuit 14.
The two relay switches 9 and 10 are turned on via
It is also connected to the off relay 16. Reference numeral 17 represents a power supply section for a spark plug, and reference numeral 18 represents a group of engine cylinders.
［作用］
技術手段の項で示した第１図の実施例に基づいて本発明
装置の作動について次に説明する。[Operation] The operation of the apparatus of the present invention will now be described based on the embodiment shown in FIG. 1 in the section of technical means.
エンジンの始動時には２つの点火プラグ１と２はともに
その本来の役割である混合気の着火のために機能し、２
プラグ点火機関の優れた長所である着火性能の優秀さを
十分に発揮する。When the engine starts, the two spark plugs 1 and 2 both function to ignite the air-fuel mixture, which is their original role.
It fully demonstrates the excellent ignition performance, which is the great advantage of plug ignition engines.
エンジンのノッキング現象は一般に低負荷ないし中負荷
のもとでは発生する恐れがないので、中負荷域までは２
プラグ点火の状態を継続させて該領域における専ら着火
向上に寄与させる。そしてしだいに高負荷域に移行して
いくと、エンジンの吸気負荷センサ１３から負荷検定回
路１４に送り込まれている負荷信号に基づいて、この負
荷がノック発生の危険限界値を越えたことが検知され、
負荷検定回路１４はリレー１６に指示を発して連動リレ
ースイッチ９と１０を切換えさせることによって点火プ
ラグ２は火炎面センサに変身する。There is generally no risk of engine knocking occurring under low or medium loads, so up to the medium load range
The plug ignition state is continued to contribute exclusively to improving ignition in this region. As the load gradually shifts to a high load range, it is detected based on the load signal sent from the engine's intake load sensor 13 to the load verification circuit 14 that the load has exceeded the critical limit value for knock occurrence. is,
The load verification circuit 14 issues an instruction to the relay 16 to switch the interlocking relay switches 9 and 10, thereby transforming the spark plug 2 into a flame surface sensor.
点火プラグ１からの火炎到達時間を検知することによっ
てノッキング現象を含むシリンダー内の燃焼状況を把握
する能力を備えた火炎面センサとしての点火プラグ１か
ら発する電気的出力の変動は、火炎面センサ用電源部１
１を経てノッキング検知回路１２に入力され、回路内に
記憶されているノッキング発生出力水準との比較が行な
われてノッキング発生と判定した時には、点火時期制御
回路１５に点火時期を遅らせるための指令が発せられる
ので、ノックを生じる条件が取り除かれることになる。Fluctuations in the electrical output from the spark plug 1 act as a flame surface sensor that has the ability to grasp the combustion situation in the cylinder, including knocking phenomena, by detecting the flame arrival time from the spark plug 1. Power supply part 1
1 to the knocking detection circuit 12 and compared with the knocking occurrence output level stored in the circuit, and when it is determined that knocking has occurred, a command is sent to the ignition timing control circuit 15 to delay the ignition timing. Since the knock is emitted, the conditions that would cause the knock to occur are removed.
［実施例］
すでに説明した第１図に示された実施例においては、エ
ンジンの負荷がノッキングを起しやすい水準以上の状態
を保ち続けている間は、２つの点火プラグの内、一方の
プラグを継続的に火炎面センサ機能を保持し続けるよう
に構成されているが、負荷の如何にかかわらず、一方の
点火プラグを一定の時間間隔例えば点火用放電パルスの
２０〜３０回に１回、あるいは周期的に０．１〜１．０
秒間の間だけという具合に絶えず間欠的に火炎面センサ
機能に切換えさる方法をとってもよい。[Embodiment] In the embodiment shown in FIG. 1, which has already been explained, while the engine load continues to be at a level that is more likely to cause knocking, one of the two spark plugs is turned off. However, regardless of the load, one spark plug is activated at a certain time interval, for example, once every 20 to 30 ignition discharge pulses, regardless of the load. Or periodically 0.1 to 1.0
It is also possible to continuously switch to the flame front sensor function intermittently, such as for only a few seconds.
また点火プラグを既述のようにエンジンシリンダー内の
燃焼状況を総合的に判断するための有力なパラメーター
としての火炎到達時間を計測するための火炎面センサと
して兼用することも可能であるので、必要に応じてこの
火炎面センサからの出力信号の解析回路を別個に設ける
ことによって、ノッキング現象の防止目的のみにとどま
ることなく、燃料と空気の混合比の制御等を同時に行な
うことができる。In addition, as mentioned above, the spark plug can also be used as a flame surface sensor to measure the flame arrival time, which is an important parameter for comprehensively determining the combustion status in the engine cylinder. By providing a separate analysis circuit for the output signal from the flame front sensor in accordance with this, it is possible not only to prevent the knocking phenomenon but also to control the mixture ratio of fuel and air at the same time.
［発明の効果］
イ）２プラグ点火機関において、１つのシリンダーに取
付けられた２つのプラグの内の１つをノッキングを生じ
やすい運転条件のもとで、あるいは常時一定の時間間隔
をもって間欠的にノッキング感知機能をそなえた火炎面
センサに変身させることによって、従来使われてきたノ
ック検知専用のセンサが不要化する。[Effects of the invention] a) In a two-plug ignition engine, one of the two plugs attached to one cylinder is operated under operating conditions that tend to cause knocking, or intermittently at regular intervals. By converting it into a flame surface sensor with a knock detection function, the conventional sensor dedicated to knock detection becomes unnecessary.
口）在来の圧力変動感知型のノックセンサは、車両の高
速走行に伴なう振動などによって感度が著しく低下し、
あるいは感度が不安定化する難点があったのに対−で、
火炎面センサは振動の影響を全く受けず、高い水準の感
度が常に維持される。Ex) Conventional pressure fluctuation sensing type knock sensors lose their sensitivity significantly due to vibrations caused by high speed driving of the vehicle.
Or, in contrast to the problem of unstable sensitivity,
The flame front sensor is completely unaffected by vibrations and maintains a high level of sensitivity at all times.
第１図は本発明装置の構成概念図、第２図は火炎面セン
サを′ノッキング検知用に使った在来のエンジン燃焼制
御装置の構成概念図、第３図は在来の火炎面センサの外
観図、第４図は在来の火炎面センサをエンジンシリンダ
ー内に取付けた時の火炎面センサ出力およびシリンダー
内圧対クランク角の相関性を示したグラフである。Figure 1 is a conceptual diagram of the configuration of the device of the present invention, Figure 2 is a conceptual diagram of a conventional engine combustion control system that uses a flame front sensor for knocking detection, and Figure 3 is a conceptual diagram of a conventional engine combustion control system that uses a flame front sensor for knocking detection. The external view, FIG. 4, is a graph showing the flame front sensor output and the correlation between cylinder internal pressure and crank angle when a conventional flame front sensor is installed in an engine cylinder.
Claims (1)
グ点火機関において、 前記機関の負荷が設定値を上回ったことを検知するブー
ストセンサと、該ブーストセンサからの出力信号に基づ
いて、前記点火プラグのいずれか一方のプラグをノッキ
ング感知用の火炎面センサとしての機能に切換えさせる
ための手段と、該センサ信号に基づいて燃焼制御を行な
うための制御回路とを組合せてなる２プラグ点火機関の
ノッキング防止装置。 ２）前記点火プラグのいずれか一方のプラグを一定の時
間間隔をもつて間欠的にノッキング感知用火炎面センサ
の機能に切換えさせるように構成されていることを特徴
とする特許請求の範囲第１項記載の２プラグ点火機関の
ノッキング防止装置。 ３）前記火炎面センサが、前記燃焼室内に取付けられた
一方の点火プラグの放電時からこの放電によって発生し
た火炎が他方の点火プラグに到達するまでの時間を計測
する機能を備えた型式のものであることを特徴とする特
許請求の範囲第１項および第２項記載の２プラグ点火機
関のノッキング防止装置。[Claims] 1) In a two-plug ignition engine in which two spark plugs are installed in one combustion chamber, a boost sensor detects that the load of the engine exceeds a set value, and an output from the boost sensor. A combination of means for switching one of the spark plugs to function as a flame surface sensor for detecting knocking based on a signal, and a control circuit for controlling combustion based on the sensor signal. Anti-knocking device for two-plug ignition engines. 2) Claim 1, characterized in that the spark plug is configured to intermittently switch one of the spark plugs to the function of a flame surface sensor for detecting knocking at regular time intervals. Anti-knocking device for a two-plug ignition engine as described in . 3) The flame surface sensor is of a type that has a function of measuring the time from when one spark plug installed in the combustion chamber is discharged until the flame generated by this discharge reaches the other spark plug. A knocking prevention device for a two-plug ignition engine according to claims 1 and 2, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15489684A JPS6131941A (en) | 1984-07-24 | 1984-07-24 | Knocking preventing device of two-plug ignition engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15489684A JPS6131941A (en) | 1984-07-24 | 1984-07-24 | Knocking preventing device of two-plug ignition engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6131941A true JPS6131941A (en) | 1986-02-14 |
Family
ID=15594323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15489684A Pending JPS6131941A (en) | 1984-07-24 | 1984-07-24 | Knocking preventing device of two-plug ignition engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6131941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5495757A (en) * | 1991-05-15 | 1996-03-05 | Siemens Automotive S.A. | Method and device for detection of ignition failures in an internal combustion engine cylinder |
-
1984
- 1984-07-24 JP JP15489684A patent/JPS6131941A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5495757A (en) * | 1991-05-15 | 1996-03-05 | Siemens Automotive S.A. | Method and device for detection of ignition failures in an internal combustion engine cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4846129A (en) | Ignition system improvements for internal combustion engines | |
| US7086382B2 (en) | Robust multi-criteria MBT timing estimation using ionization signal | |
| US20060288982A1 (en) | Ignition timing control device of internal combustion engine | |
| JPH1030977A (en) | Preignition detecting apparatus | |
| JPH07166947A (en) | Detecting method of self-ignition in combustion cylinder for spark-discharge ignition internal combustion engine | |
| US5606118A (en) | System and method for detecting misfire in an internal combustion engine | |
| JPS5945834B2 (en) | Knotking avoidance device | |
| US5349299A (en) | Fuel supply misfire-detecting system for internal combustion engines | |
| US8924134B2 (en) | Knock control device of internal combustion engine | |
| JP3157156B2 (en) | Method of operating an internal combustion engine | |
| US6691555B2 (en) | Firing state discrimination system for internal combustion engines | |
| JPH07167029A (en) | Detecting method of misfire in combustion cylinder for spark discharge ignition internal combustion engine | |
| US10519879B2 (en) | Determining in-cylinder pressure by analyzing current of a spark plug | |
| JPS6131941A (en) | Knocking preventing device of two-plug ignition engine | |
| JP2596139B2 (en) | Knocking control device for alcohol mixed fuel internal combustion engine | |
| US4408592A (en) | Ignition system for internal combustion engines | |
| JP4302843B2 (en) | Internal combustion engine control method | |
| JPH07198545A (en) | Method for determining load in combustion cylinder of spark-charge igniting internal combustion engine | |
| Zhao et al. | Engine performance monitoring using spark plug voltage analysis | |
| JPS62248852A (en) | Combustion controller for internal combustion engine | |
| JP2500497Y2 (en) | Control device for internal combustion engine | |
| KR100251209B1 (en) | Ignition timing control method according to the output of a knock sensor | |
| JP2000145606A (en) | Time course detecting method for ignition plug in internal combustion engine | |
| JP2775814B2 (en) | Combustion determination method for spark ignition internal combustion engine | |
| JPH1089216A (en) | Knocking control device for internal combustion engine |