JPS59120779A - Ignition timing control circuit of internal-combustion engine - Google Patents

Ignition timing control circuit of internal-combustion engine

Info

Publication number
JPS59120779A
JPS59120779A JP57226589A JP22658982A JPS59120779A JP S59120779 A JPS59120779 A JP S59120779A JP 57226589 A JP57226589 A JP 57226589A JP 22658982 A JP22658982 A JP 22658982A JP S59120779 A JPS59120779 A JP S59120779A
Authority
JP
Japan
Prior art keywords
ignition timing
cylinder
crank angle
pressure
output
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
Application number
JP57226589A
Other languages
Japanese (ja)
Other versions
JPH0320597B2 (en
Inventor
Tatsuro Morita
森田 達郎
Hiroshi Yamaguchi
博司 山口
Hiroshi Miwakeichi
三分一 寛
Kuniaki Sawamoto
沢本 国章
Satoru Takizawa
瀧澤 哲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP57226589A priority Critical patent/JPS59120779A/en
Publication of JPS59120779A publication Critical patent/JPS59120779A/en
Publication of JPH0320597B2 publication Critical patent/JPH0320597B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02PIGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00Advancing or retarding ignition; Control therefor
    • F02P5/04Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145Advancing 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
    • F02P5/155Analogue data processing
    • F02P5/1553Analogue data processing by determination of elapsed angle with reference to a particular point on the motor axle, dependent on specific conditions
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

Abstract

PURPOSE:To invariably obtain the optimum ignition timing regardless of variations of an engine or secular changes by detecting the internal pressure and crank angle of each cylinder to determine the maximum-pressure crank angle and compensating and controlling the ignition timing based on this maximum- pressure crank angle. CONSTITUTION:Output signals of pressure sensors 20-23 attached to individual cylinders are selected by a multiplexer 24 in accordance with the output of a crank angle sensor 1 and are fed to a calculating circuit 28 after A/D conversion 25. The ignition timing A is determined from a calculating circuit B 30 based on outputs of the said sensor 1 and an air flow meter 2. In addition, the crank position when the internal pressure was the maximum for each cylinder is read out from a memory A29, and the average value of predetermined times is determined. An average value of average values of the said individual cylinders is determined by the calculating circuit B30, and the obtained ignition timing is compensated and controlled in an ignition timing control device 32 based on the output of the circuit B30.

Description

【発明の詳細な説明】 不発明は内燃機関の点火時期制御装置に関する〇従来の
内燃機関の点火時期制御装置としては例えば第1図に示
すようなものがある0この装置では、機関のクランク軸
の基準位置および角度を検出するクランク角センサ1、
機関への1回転当りの吸入空気流量Qf検出するエアフ
ロメータ7I7/2、機関のスロットルバルブが全閉で
あるか否かを検出するスロットルバルブ全閉検出スイッ
チ3からの各信号が制御回路4に入力される。制御回路
4はCPU5、ROM6、RAM?、入出力制御回路8
等で構成され、前記各入力信号に基いて演算制御した点
火信号を点火時期信号出力端子9からトランジスタ10
に出力する。トランジスタ10によって増幅された点火
信号は点火コイル11に与えられ、このコイル11の2
次側に発生する高圧パルスが分配器12を介して各気筒
の点火栓13に与えられ点火が行イつれる。
DETAILED DESCRIPTION OF THE INVENTION The invention relates to an ignition timing control device for an internal combustion engine. As a conventional ignition timing control device for an internal combustion engine, there is, for example, the one shown in FIG. a crank angle sensor 1 that detects the reference position and angle of the
Signals from the air flow meter 7I7/2, which detects the intake air flow rate Qf per revolution to the engine, and the throttle valve fully closed detection switch 3, which detects whether the engine throttle valve is fully closed, are sent to the control circuit 4. is input. Control circuit 4 includes CPU 5, ROM 6, and RAM? , input/output control circuit 8
etc., and the ignition signal which is calculated and controlled based on each input signal is sent from the ignition timing signal output terminal 9 to the transistor 10.
Output to. The ignition signal amplified by the transistor 10 is given to the ignition coil 11.
A high-pressure pulse generated on the next side is applied to the spark plug 13 of each cylinder via the distributor 12, causing ignition.

ここで制御回路4における点火時期制御は、第2圀に示
すフローチャートにしたがって次のように行われる。ま
ず、スロットルバルブ全閉検出スイッチ3によってスロ
ットルバルブが全閉であるか否かが検出され(ステップ
15)、全閉すなわちアイドリンク運転の場合lこはク
ランク軸の基準位置およびクランク角センサ1の検出信
号から得られる機関回転数Nに基いて第3図に示す特性
Iが検出され(ステップ16)、点火時期(進角値〕A
倍信号出力される(ステップ18)o一方スロットルバ
ルプが全閉でない場合には上記機関回転数Nとエアフロ
ーメータの検出信号から得られる吸入空気流量Qに基づ
いて第4図に示す特性■が検索され(ステップ1T)、
点火時期(進角値)A信号が出力される(ステップ18
)。これによって点火時期が適正制御され、燃料消費、
運転性、排気性能等についての改善が図られている。
Here, the ignition timing control in the control circuit 4 is performed as follows according to the flowchart shown in the second section. First, the throttle valve fully closed detection switch 3 detects whether or not the throttle valve is fully closed (step 15). Characteristic I shown in FIG. 3 is detected based on the engine speed N obtained from the detection signal (step 16), and the ignition timing (advance value) A
A double signal is output (step 18) o On the other hand, if the throttle valve is not fully closed, the characteristic ■ shown in Fig. 4 is searched based on the engine speed N and the intake air flow rate Q obtained from the air flow meter detection signal. (Step 1T),
Ignition timing (advance value) A signal is output (step 18
). This allows the ignition timing to be properly controlled, reducing fuel consumption and
Improvements have been made in drivability, exhaust performance, etc.

しかしながら、このような従来の内燃機関の点火時期制
御装置にあっては、実質的に機関回転数Nと吸入空気流
量Qだけに基づいて点火時期を決定するものとなってい
るため、機関の製造上のばらつきや経時変化に対応でき
ないことがあり、必ずしも最適な点火時期に制御できす
、機関に要求される性能を発揮できないという問題点が
ある。
However, in such a conventional ignition timing control device for an internal combustion engine, the ignition timing is determined based only on the engine speed N and the intake air flow rate Q, so it is difficult to manufacture the engine. There are problems in that it may not be possible to respond to the above variations and changes over time, and it is not always possible to control the ignition timing to the optimum timing, making it impossible to achieve the performance required of the engine.

本発明は上述の点を考慮してなされたもので、機関各気
筒の筒内圧力およびクランク角を検出して圧力最大クラ
ンク角を求め、この圧力最大クランク角に基いて点火時
期を補正制御することにより最適点火時期に点火し得る
内燃機関の点火時期制御装置を提供するものである。
The present invention has been made in consideration of the above points, and detects the in-cylinder pressure and crank angle of each cylinder of the engine to determine the maximum pressure crank angle, and corrects and controls the ignition timing based on this maximum pressure crank angle. The present invention provides an ignition timing control device for an internal combustion engine that can ignite at the optimum ignition timing.

以下第5図乃至第12図を参照して本発明を実施例につ
き説明する。
Embodiments of the present invention will be described below with reference to FIGS. 5 to 12.

第5図は4気筒内燃機関に適用した本発明の一実施例を
示すブロック線図である。この場合、4気筒の各々に各
筒内圧力Pを検出する圧力センサ20〜23を設ける。
FIG. 5 is a block diagram showing an embodiment of the present invention applied to a four-cylinder internal combustion engine. In this case, pressure sensors 20 to 23 are provided for each of the four cylinders to detect the cylinder pressure P.

これら圧力センサ20〜23は例えば点火栓の座金部に
取付けられた圧電菓子等として構成される。これと共に
前述のクランク角センサ1およびエア70−メータ2そ
設ける。
These pressure sensors 20 to 23 are configured, for example, as piezoelectric confectionery attached to a washer of a spark plug. Along with this, the above-mentioned crank angle sensor 1 and air meter 2 are provided.

圧力センサ20〜23の各出力はマルチプレクサ24に
与えられ、マルチプレクサ24によりクランク角θ1こ
したがい何れかの圧力センサが選択されその出力がA/
D変換器25に与えられる。
Each output of the pressure sensors 20 to 23 is given to a multiplexer 24, which selects one of the pressure sensors according to the crank angle θ1 and outputs the output from A/23.
The signal is applied to the D converter 25.

A7/D変換器25はマルチプレクサ24により選択さ
れた圧力センサが出力する筒内圧力Pのアナログ値を、
クランク角1°毎にディジタル値に変換する。またパル
スカウンタ26はクランク角センサ1からのクランク角
度信号をカウントして機関回転数Nを出力する。ざらに
A/D変換器2Tはエア70−メータ2が出力する機関
1回転当りの吸入空気流量Qのアナログ値をディジタル
値に変換する。
The A7/D converter 25 converts the analog value of the cylinder pressure P output by the pressure sensor selected by the multiplexer 24 into
Convert every 1° of crank angle into a digital value. Further, the pulse counter 26 counts the crank angle signal from the crank angle sensor 1 and outputs the engine rotation speed N. Roughly speaking, the A/D converter 2T converts the analog value of the intake air flow rate Q per engine revolution outputted from the air meter 2 into a digital value.

演算回路A28は圧力センサ20〜23からの各筒内圧
力とクランク角センサ1からのクランク角位置θに基い
て筒内圧力Pが最大となったときのり2ンク角位置θp
maxf計測し出力する。メモIJ A 29は演算回
路A28から出力されるθPmaxの値を記憶する。θ
pmaxの値は1番気筒(i=1〜4)毎に現在から過
去のnサイクル(n=4〜32)についての各位(θp
max)inがメモリA29の該当するアドレスに記憶
される。
The arithmetic circuit A28 calculates the cylinder angle position θp when the cylinder pressure P reaches the maximum based on each cylinder pressure from the pressure sensors 20 to 23 and the crank angle position θ from the crank angle sensor 1.
Measure and output maxf. Memo IJA 29 stores the value of θPmax output from arithmetic circuit A28. θ
The value of pmax is calculated from each cylinder (θp
max)in is stored at the corresponding address in the memory A29.

一方演算回路B30は点火時期AI−演算し出力する。On the other hand, the calculation circuit B30 calculates the ignition timing AI and outputs it.

すなわち演算回路B30はまず前述の特性I (第3図
)または特性■(第4図)にしたがって点火時期Aを演
算する。次に前記メモリ29から各気筒毎のθpmax
、つまりθin%読出して各気筒毎の平均値θin%求
めた上で、全ての気筒についての平均値θmを求める。
That is, the arithmetic circuit B30 first calculates the ignition timing A according to the characteristic I (FIG. 3) or the characteristic II (FIG. 4) described above. Next, θpmax for each cylinder is stored in the memory 29.
That is, after reading θin% and finding the average value θin% for each cylinder, the average value θm for all cylinders is found.

この全気筒平均値θmに基いて補正値αを求め、点火時
期Aと加算しA’=A+αを求めてメモリB31にスト
アする〇このメそ1JB31の記憶内容が演算回路B3
0によって読出されて点火時期制御回路32に与えられ
、各気筒の点火時期制御に用いられる。
Calculate the correction value α based on this all-cylinder average value θm, add it to the ignition timing A, calculate A'=A+α, and store it in the memory B31. The memory contents of this meso 1JB31 are the calculation circuit B3
0 is read out and given to the ignition timing control circuit 32, where it is used to control the ignition timing of each cylinder.

第6図は第5図における点火時期制御回路32をより詳
細に示したもので、演算回路B30から転送される点火
時期A′の値はレジスタ33に一時格納される。同じく
演算回路B30の出力が与えられるパルスカウンタ34
は1°信号をカウントしレジスタ33へのデータ転送の
度毎にリセットされる。レジスタ33の値とパルスカウ
ンタ34の値は比較器35で比較され比較結果に応じて
点火信号がトランジスタ10そ介して点火コイル11に
出力され、更に分配器12を経て点火栓13に与えられ
る。
FIG. 6 shows the ignition timing control circuit 32 in FIG. 5 in more detail, and the value of ignition timing A' transferred from the arithmetic circuit B30 is temporarily stored in the register 33. A pulse counter 34 also receives the output of the arithmetic circuit B30.
counts 1° signal and is reset every time data is transferred to the register 33. The value of the register 33 and the value of the pulse counter 34 are compared by a comparator 35, and depending on the comparison result, an ignition signal is outputted to the ignition coil 11 via the transistor 10, and further provided to the ignition plug 13 via the distributor 12.

次に第5図および第6図に示した実施例の動作を説明す
る。
Next, the operation of the embodiment shown in FIGS. 5 and 6 will be explained.

第7図は演算回路A28の動作フローチャートであり、
クランク角センサ1からの入力信号に基きり2ンク角位
置θを判定しくステップ40)、θ二〇°〜60°のと
きは1番気筒の、θ=180°〜240°のときは3番
気筒の、θ=360°〜420°のときは4番気筒の、
θ=540°〜600°のときは2番気筒の谷圧カセン
サが検出する筒内圧力Pをマルチブレフサ24  によ
って選択して出力させ(ステップ41〜44 ) 、A
/D変換器25によりクランク角1°毎にディジタル変
換する(ステップ45)0さらに演算回部28は再びθ
を判別しくステップ46)、θ=60°または240°
または420゜または600°と判定するとA/D変換
器25にその判定信号を出力してA/D変換を終了させ
る。これと共に各気筒毎のそのサイクル(1爆発)分の
筒内圧力が最大であったときのクランク位置(θpma
x)in’)計測し、これをメモ!JA29の該当する
アドレスに記憶する(ステップ47)。
FIG. 7 is an operation flowchart of the arithmetic circuit A28,
Based on the input signal from the crank angle sensor 1, the second cylinder angle position θ is determined (Step 40). of the cylinder, when θ=360° to 420°, the number 4 cylinder,
When θ=540° to 600°, the in-cylinder pressure P detected by the valley pressure sensor of the No. 2 cylinder is selected and outputted by the multi-pressure sensor 24 (steps 41 to 44), and A
/D converter 25 performs digital conversion every 1° of crank angle (step 45). Furthermore, calculation circuit 28 again converts θ
Step 46), θ=60° or 240°
Alternatively, if it is determined to be 420° or 600°, the determination signal is output to the A/D converter 25 to terminate the A/D conversion. Along with this, the crank position (θpma) when the cylinder pressure for each cycle (one explosion) is at its maximum
x)in') Measure and note this down! It is stored in the corresponding address of JA29 (step 47).

第8図は第7図の70−テヤートにおけるステップ41
〜44による各気筒のA/D変換タイミングおよびこれ
に基く点火時期演算のタイミングを示したものである。
Figure 8 shows step 41 in 70-Tayat of Figure 7.
44 shows the A/D conversion timing of each cylinder and the timing of ignition timing calculation based on this.

第9図は演算回路B30の動作フローチャートである。FIG. 9 is an operation flowchart of the arithmetic circuit B30.

演算回路B30はパルスカウンタ26からの機関回転数
信号NとA/D変換器2Tからの吸入空気流量信号Qお
よび図示しない水温センサからの冷却水温度信号等を読
取り、前述のように特性■ (第3図)または特性■ 
(第4図)に基いて点火時期A’)求める(ステップ5
0)。次にメモリA29からθ1n(iは気筒数で1〜
4、nは整数で1〜4(〜32))を読出して所定値B
(例えば2゜ATDC)と比較し、θf 曵ミBどな、
るもの−・にQいての平均値θinを求める。これを1
〜4番気筒について行いθ1m〜04 m ’&求める
(ステップ51)。なお、θinが全てθf n < 
Bの場合はθf n = B(2°A T D C)と
する。
The arithmetic circuit B30 reads the engine speed signal N from the pulse counter 26, the intake air flow rate signal Q from the A/D converter 2T, the cooling water temperature signal from the water temperature sensor (not shown), etc., and calculates the characteristic ■ ( Figure 3) or characteristics ■
Determine the ignition timing A') based on (Fig. 4) (Step 5
0). Next, from memory A29 θ1n (i is the number of cylinders from 1 to
4, n is an integer, read out 1 to 4 (to 32)) and set it to the predetermined value B.
(for example, 2° ATDC), θf B, etc.
Find the average value θin for Q. This is 1
.theta.1m.about.04 m'&determined (step 51). Note that all θin is θf n <
In the case of B, θf n = B (2°A T D C).

次に01m〜04mについて所定値C(例えば2゜AT
DC=B)と比較し、θf m ) Cとなるものにつ
いて平均値θm%求める。全てθf n (Cの場合は
0m=C(2°ATDC)とする(ステップ52)0こ
のθmによって次のようにαそ決定する(ステップ53
)。すなわちθmが、 θm、≧0θt+4のとき    α=α+2θt+4
〉θm〉θfのとき α=α+1θm=θtのとき  
   α=α θt〉θm〉θf−4のとき  α=α−1θm〈θf
−4のとき   α=α−2とする。θfは最も燃費の
良い角度である。
Next, for 01m to 04m, a predetermined value C (for example, 2°AT
DC=B) and find the average value θm% for θf m )C. All θf n (In case of C, set 0m=C(2°ATDC) (Step 52) 0 From this θm, α is determined as follows (Step 53
). That is, when θm is θm, ≧0θt+4, α=α+2θt+4
When 〉θm〉θf When α=α+1θm=θt
When α=α θt〉θm〉θf-4 α=α-1θm〈θf
-4, α=α−2. θf is the angle with the best fuel efficiency.

次に前のAとαとを加え合わせA’=A+αを演算する
(ステップ54)oこのA’ KメモリB31にストア
する(ステップ55)oまた演算回路B30は各シリン
ダの圧縮上死点前70°の時期にメモ’JB31からデ
ータを得て70−A’を演算し点火時期制御装置32の
レジスタ33にデータを転送する。
Next, add the previous A and α to calculate A'=A+α (step 54) o Store this A' in the K memory B31 (step 55) At the time of 70°, data is obtained from the memo 'JB31', 70-A' is calculated, and the data is transferred to the register 33 of the ignition timing control device 32.

第10図は点火時期制御装置32(第61)の動作を示
すタイムチャートである。上死点前70゜の時期70B
TDCにレジスタ33に70−Aが転送されると共にカ
ウンタ34がリセットされる。
FIG. 10 is a time chart showing the operation of the ignition timing control device 32 (61st). Period 70B at 70° before top dead center
70-A is transferred to the register 33 at TDC, and the counter 34 is reset.

そしてカウンタ34は以後クランク角1°信号そよラン
トしそのカウント値がレジスタ33の値と一致すると比
較器35が出力を生じ点火動作が行われる。
Thereafter, the counter 34 generates a signal of 1° of crank angle, and when the count value matches the value of the register 33, the comparator 35 outputs an output and the ignition operation is performed.

第11図は第5図の実施例におけるクランク角センサ1
の出力信号を示したもので、1番気筒の圧縮上死点毎の
基準信号aとクランク角1°毎の信号すとからなる。
FIG. 11 shows the crank angle sensor 1 in the embodiment shown in FIG.
It shows the output signal of , and consists of a reference signal a for each compression top dead center of the No. 1 cylinder and a signal for each crank angle of 1°.

第12Pは上記θtつまり燃費最良点と点火時期との関
係を示したものである0したがって筒内圧力が最大とな
るクランク角位置θpmaxが所定位置にあることが燃
費上液も好都合であり、点火時期がこれより進んでも遅
れても燃費が悪化する。
The 12th P indicates the relationship between the above θt, that is, the best fuel efficiency point, and the ignition timing. Therefore, it is convenient for the fuel efficiency to be at a predetermined position when the crank angle position θpmax, where the cylinder pressure is maximum, is at a predetermined position. Fuel efficiency will worsen whether the timing is earlier or later than this.

このことから第9図のステップ53におけるα演算では
θt±4°の範囲で点火時期Aの補正値αそ求めるよう
にしている。
Therefore, in the α calculation in step 53 of FIG. 9, the correction value α of the ignition timing A is calculated within the range of θt±4°.

上記実施例における平均値θmの求め方はi気筒機関に
おけるi個のデータ中最大側、最小側データを除き残り
のものの平均をとるようにしているが、この除外をどの
ようにするかは任意に決め得る。
In the above embodiment, the average value θm is calculated by excluding the maximum and minimum data among the i data of the i-cylinder engine, and taking the average of the remaining data. However, how this exclusion is determined is arbitrary. can be decided.

不発明は上述のように、機関の筒内圧力およびクランク
角を検出して圧力最大クランク角を求め、この圧力最大
クランク角を所定値にするよう点火時期を補正制御する
ようにしたため、機関のばらつき、経時変化に拘らず最
適点火時期に点火することができる。
As mentioned above, the invention detects the cylinder pressure and crank angle of the engine to determine the maximum pressure crank angle, and corrects and controls the ignition timing to bring the maximum pressure crank angle to a predetermined value. It is possible to ignite at the optimum ignition timing regardless of variations or changes over time.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来の内燃機関の点火時期制御装置の構成を示
すブロック線図、M2図は第1図の装置の動作を示すフ
ローチャート、第3肉は第1図の装置におけるアイドリ
ンク運転時の点火時期特性図、第4図は同じく通常運転
時の点火時期特性図、第5図は本発明の一実施例を示す
ブロック線図、第6図は同芙施例中の点火時期制御装置
の構成を示すブロック線図、第7図は同じく演算回路A
の動作を示すフローチャート、第8図はサイクル全体の
各動作を示すタイムチャート、第9図は上記実施例中の
演算回路Bの動作を示す70−チャート、第10図は同
じく点火時期制御回路の動作を示すタイムチャート、第
11図は機関のクランク軸の基準位置と角度検出信号と
の関係を示す波形図、第12図は筒内圧力最大クランク
角に対する点火時期および燃費の各特性を示す図である
01・・・クランク角センサ、   2・・・エアフロ
ーメータ、   10・・・トランジスタ、   11
・・・点火コイル、   12・・・分配器、   1
3・・・点火栓、20〜23・・・圧力検出器、  2
4・・・マルチプレクサ、A、A’・・・点火時期、 
 N・・・機関回転数、  P・・・筒内圧力、  Q
・・・吸入空気流量〇竹許出願人  日産自動車株式会
社 代理人 弁理士 笹 島 畠二雄 第1図 第2図
Fig. 1 is a block diagram showing the configuration of a conventional ignition timing control device for an internal combustion engine, Fig. M2 is a flowchart showing the operation of the device in Fig. 1, and Fig. 3 shows the idling operation of the device in Fig. 1. FIG. 4 is an ignition timing characteristic diagram during normal operation, FIG. 5 is a block diagram showing an embodiment of the present invention, and FIG. 6 is a diagram of an ignition timing control device in the same embodiment. A block diagram showing the configuration, FIG. 7 is also the arithmetic circuit A.
8 is a time chart showing each operation of the entire cycle, FIG. 9 is a 70-chart showing the operation of the arithmetic circuit B in the above embodiment, and FIG. 10 is a flowchart showing the operation of the ignition timing control circuit. A time chart showing the operation, Fig. 11 is a waveform chart showing the relationship between the reference position of the engine crankshaft and the angle detection signal, and Fig. 12 is a chart showing the characteristics of ignition timing and fuel efficiency with respect to the maximum cylinder pressure crank angle. 01...Crank angle sensor, 2...Air flow meter, 10...Transistor, 11
...Ignition coil, 12...Distributor, 1
3... Spark plug, 20-23... Pressure detector, 2
4...Multiplexer, A, A'...Ignition timing,
N... Engine speed, P... Cylinder pressure, Q
...Intake air flow rate〇 Bamboo permit applicant Nissan Motor Co., Ltd. agent Patent attorney Fujio Hatake Sasashima Figure 1 Figure 2

Claims (1)

【特許請求の範囲】[Claims] 多気筒内燃機関の各気筒内圧力を検出する手段と、前記
内燃機関のクランク角を検出する手段と、前記雨検出手
段の出力を得て気筒内圧力が最大となるクランク角を求
める手段と、前記内燃機関の各気筒における所定爆発回
数の気筒同圧力最大クランク角の平均値を求める第1の
演算手段と、この第1の演算手段からの気筒毎平均値の
平均値を求める第2の演算手段と、この笛2の演算手段
の出力に基き点火時期を調整する手段とそそなえた内燃
機関の点火時期制御回路。
means for detecting the pressure in each cylinder of a multi-cylinder internal combustion engine; means for detecting the crank angle of the internal combustion engine; and means for obtaining the output of the rain detecting means to determine the crank angle at which the cylinder pressure is maximum; a first calculation means for calculating the average value of the maximum crank angle of the cylinder same pressure for a predetermined number of explosions in each cylinder of the internal combustion engine; and a second calculation means for calculating the average value of the cylinder-by-cylinder average values from the first calculation means. and means for adjusting the ignition timing based on the output of the calculation means of the whistle 2.
JP57226589A 1982-12-27 1982-12-27 Ignition timing control circuit of internal-combustion engine Granted JPS59120779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57226589A JPS59120779A (en) 1982-12-27 1982-12-27 Ignition timing control circuit of internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57226589A JPS59120779A (en) 1982-12-27 1982-12-27 Ignition timing control circuit of internal-combustion engine

Publications (2)

Publication Number Publication Date
JPS59120779A true JPS59120779A (en) 1984-07-12
JPH0320597B2 JPH0320597B2 (en) 1991-03-19

Family

ID=16847542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57226589A Granted JPS59120779A (en) 1982-12-27 1982-12-27 Ignition timing control circuit of internal-combustion engine

Country Status (1)

Country Link
JP (1) JPS59120779A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716874A (en) * 1985-09-27 1988-01-05 Champion Spark Plug Company Control for spark ignited internal combustion engine
JPH01187367A (en) * 1988-01-19 1989-07-26 Fuji Heavy Ind Ltd Ignition timing controller for internal combustion engine
US5043112A (en) * 1987-10-09 1991-08-27 The Dow Chemical Company Process for forming articles comprising poly(phenylene sulfide) (PPS)
WO1993004223A1 (en) * 1991-08-17 1993-03-04 The Dow Chemical Company Microporous hollow fiber or film membrane of poly(phenylene sulfide) (pps)
US5202023A (en) * 1991-12-20 1993-04-13 The Dow Chemical Company Flexible hollow fiber fluid separation module
US5246647A (en) * 1989-03-28 1993-09-21 The Dow Chemical Company Process of making microporous hollow fiber or film membrane of poly(phenylene sulfide) (PPS)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716874A (en) * 1985-09-27 1988-01-05 Champion Spark Plug Company Control for spark ignited internal combustion engine
US5043112A (en) * 1987-10-09 1991-08-27 The Dow Chemical Company Process for forming articles comprising poly(phenylene sulfide) (PPS)
JPH01187367A (en) * 1988-01-19 1989-07-26 Fuji Heavy Ind Ltd Ignition timing controller for internal combustion engine
US5246647A (en) * 1989-03-28 1993-09-21 The Dow Chemical Company Process of making microporous hollow fiber or film membrane of poly(phenylene sulfide) (PPS)
WO1993004223A1 (en) * 1991-08-17 1993-03-04 The Dow Chemical Company Microporous hollow fiber or film membrane of poly(phenylene sulfide) (pps)
US5202023A (en) * 1991-12-20 1993-04-13 The Dow Chemical Company Flexible hollow fiber fluid separation module

Also Published As

Publication number Publication date
JPH0320597B2 (en) 1991-03-19

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