JPS6065279A - Ignition-timing controller on starting of internal- combustion engine - Google Patents

Ignition-timing controller on starting of internal- combustion engine

Info

Publication number
JPS6065279A
JPS6065279A JP58172078A JP17207883A JPS6065279A JP S6065279 A JPS6065279 A JP S6065279A JP 58172078 A JP58172078 A JP 58172078A JP 17207883 A JP17207883 A JP 17207883A JP S6065279 A JPS6065279 A JP S6065279A
Authority
JP
Japan
Prior art keywords
ignition
engine
temp
starting
ignition advance
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
JP58172078A
Other languages
Japanese (ja)
Other versions
JPS6240548B2 (en
Inventor
Koichiro Haga
芳賀 宏一郎
Hiroshi Sasaki
宏 佐々木
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 JP58172078A priority Critical patent/JPS6065279A/en
Publication of JPS6065279A publication Critical patent/JPS6065279A/en
Publication of JPS6240548B2 publication Critical patent/JPS6240548B2/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
    • F02P5/15Digital data processing
    • F02P5/1502Digital data processing using one central computing unit
    • F02P5/1508Digital data processing using one central computing unit with particular means during idling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Abstract

PURPOSE:To secure the initial explosion and stabilize the perfect explosion through the increase of cranking speed by detecting the start, temp., and the number of revolutions of an engine and reducing the ignition advance according to the rise of engine temp. and the increase of the number of revolutions. CONSTITUTION:The turning-ON sinal for a starter switch 21, engine revolution speed on crank-angle sensor 23, and the detection signal for the engine temp. on a water temp. sensor 24 are input into an iginition-timing control means 22. The ignition advance value CRADV on starting which is previously assigned into a ROM22a and the iginition advance revolution correcting coefficient alpha previously assigned into a ROM22b in correspondence with the engine cooling-water temp. and the engine revolution speed are read-out, and then the product of the ignition advance read by an ignition-timing determining means 22c and the correction coefficient alpha is obtained, and this value is output as the ignition advance value CRADV.RE to be actually controlled, into an ignition apparatus 6. Said ignition advance is memorized into the ROM22a and ROM22b so as to be reduced as the cooling-water temp. rises and the revolution speed increases.

Description

【発明の詳細な説明】 く技術分野〉 本発明は内燃機関の始動時における点火時期を制御する
装置に関する。
DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a device for controlling ignition timing at the time of starting an internal combustion engine.

く背景技術〉 機関の吸入空気量等の運転状態信号に応じ点火時期を電
子的に進遅制御する点火時期制御装置が従来から知られ
る。これは機関運転状態に対応した点火時期データを予
め定めておき、検出した機関運転状態に基づいてこの制
御すべき点火時期を読み取シ、その出力信号を点火装置
のパワートランジスタ等へ供給する。
BACKGROUND TECHNOLOGY Ignition timing control devices that electronically advance or retard ignition timing in response to operating status signals such as the intake air amount of an engine have been known. In this method, ignition timing data corresponding to the engine operating state is determined in advance, the ignition timing to be controlled is read based on the detected engine operating state, and the output signal is supplied to the power transistor of the ignition device.

しかし機関のクランキング時即ち始動時には通常の点火
時期制御に用いでいる点火時期データを用いず、第1図
に示すように機関温度例えば機関冷却水温度に対するク
ランキング時の点火時期データとして別に定め、特に低
温時の点火時期を早めて始動性の向上を図っている。
However, when cranking or starting the engine, the ignition timing data that is normally used for ignition timing control is not used; instead, as shown in Figure 1, the ignition timing data during cranking is determined separately for the engine temperature, for example, the engine cooling water temperature. The ignition timing is advanced, especially at low temperatures, to improve startability.

このような始動時の点火時期制御装置は例えば特開昭5
5−139.970号公報に開示しである。
Such an ignition timing control device at the time of starting is disclosed in, for example, Japanese Patent Application Laid-open No. 5
It is disclosed in Japanese Patent No. 5-139.970.

即チマイクロコンピュータ等のコントロールユニット1
には、機関始動を検出するスタータ・スイッチ2からの
スイッチ信号、機関温度を検出する冷却水温センサ3か
らの水温信号、機関回転速度を検出するクランク角セン
サ4からのクランク角信号、及び吸入空気量を検出する
エアフローメータ5からの吸入空気量信号が夫々入力さ
れる。
Control unit 1 for microcomputer, etc.
includes a switch signal from starter switch 2 that detects engine starting, a water temperature signal from cooling water temperature sensor 3 that detects engine temperature, a crank angle signal from crank angle sensor 4 that detects engine rotation speed, and intake air. An intake air amount signal from an air flow meter 5 that detects the amount is inputted.

コントロールユニット1では、吸入空気量と機関回転速
度とに応じて予め演算された基本噴射量に応じ燃料噴射
弁開閉デユーティの基本パルス巾を割シ出し、これと機
関回転速度に応じた通常運転時の点火時期データをRO
Mに記憶させておく。
The control unit 1 determines the basic pulse width of the fuel injection valve opening/closing duty according to the basic injection amount calculated in advance according to the intake air amount and the engine rotational speed, and calculates the basic pulse width of the fuel injection valve opening/closing duty according to this and the engine rotational speed during normal operation. RO the ignition timing data of
Let M memorize it.

そして前記各検出手段(2〜5)の実際の検出信号によ
り前記点火時期データを読み取シ、点火装置6のパワー
トランジスタ7に最適点火指令信号を出力してこれをオ
ンとし、スパークプラグ8で点火を行う。尚第2図中9
はイグニッションコイル、10はディストリビュータ、
11はバッテリである。
Then, the ignition timing data is read based on the actual detection signals of each of the detection means (2 to 5), and an optimum ignition command signal is output to the power transistor 7 of the ignition device 6 to turn it on, and the spark plug 8 ignites. I do. 9 in Figure 2
is the ignition coil, 10 is the distributor,
11 is a battery.

スタータ・スイッチ2がオンとなる始動時(クランキン
グ時)には上記通常運転時のルーチンに始動時点火時期
制御ルーチンを割り込ませる。即ち冷却水温度に対する
進角値を別に第1図に示すように定めておき、特に低温
時の点火時期を早めて始動性の向上を図る。
At the time of starting (during cranking) when the starter switch 2 is turned on, the ignition timing control routine at the time of starting is inserted into the routine during normal operation. That is, the advance angle value for the cooling water temperature is separately determined as shown in FIG. 1, and the ignition timing is advanced especially at low temperatures to improve startability.

しかしこのような冷却水温度にのみ依存する始動時の点
火時期制御では、進角量の大きい低温始動時に、初爆後
完爆して自刃運転に至る前に機関が停止してしまうこと
がある。これはクランキング速度が低く不安定な始動初
期はど点火時期が過早となってピストンを介し逆回転方
向に燃焼ガス圧力が大きく作用するためである。
However, with this kind of ignition timing control at startup that depends only on the coolant temperature, during low-temperature starts with a large amount of advance, the engine may stop after the initial explosion before reaching full-scale operation. . This is because the ignition timing becomes too early during the initial startup period when the cranking speed is low and unstable, and the combustion gas pressure acts strongly in the reverse rotation direction via the piston.

一方、特開昭55−137359号公報にみられるよう
に、クランキング時の機関回転速度が低くなるほど即ち
始動初期はど進角量を小さく制御して初爆後の機関停止
を防止するようにしたものもあるが、進角量が小さ過ぎ
て初爆が困難となυ、始動に時間がかかるという別の面
からの不都合が生じた。
On the other hand, as seen in Japanese Unexamined Patent Publication No. 55-137359, the lower the engine rotation speed during cranking, the smaller the advance amount at the beginning of startup to prevent the engine from stopping after the first explosion. However, the advance angle was too small, making initial detonation difficult, and it took a long time to start, which caused other problems.

〈発明の目的〉 本発明は従来の上記の如き不都合に鑑み、機開始動時の
初爆を確実に得る一方、該初爆後の機関停止を防止する
ことを目的とする。
<Object of the Invention> In view of the above-mentioned conventional disadvantages, an object of the present invention is to ensure the initial detonation at the start of the aircraft while preventing the engine from stopping after the initial detonation.

〈発明の構成〉 上記目的達成のため本発明では、機関の始動を検出する
手段と、機関温度を検出する手段と、機関回転速度を検
出する手段と、前記各手段からの入力信号を受け機開始
動時に機関温度の上昇に応じ及び機関回転速度の増大に
応じ点火進角値を小さくする点火指令信号を点火装置に
出力する点火時期制御手段と、を設け、もって機関温度
が低いほど点火進角値を大きくする従来技術を一応踏襲
して初爆を確実に得る一方、クランキング速度が増大し
て完爆が安定するように徐々に点火進角値を小さくして
初爆後の機関停止を防止する。
<Structure of the Invention> In order to achieve the above object, the present invention includes means for detecting the start of the engine, means for detecting the engine temperature, means for detecting the engine rotation speed, and a receiver for receiving input signals from each of the above-mentioned means. and ignition timing control means that outputs an ignition command signal to the ignition device to reduce the ignition advance value in response to a rise in engine temperature and in response to an increase in engine rotational speed at the time of starting operation, so that the lower the engine temperature, the more the ignition advance. While the conventional technology of increasing the ignition angle value is followed to ensure the first explosion, the engine is stopped after the first explosion by gradually decreasing the ignition advance value so that the cranking speed increases and the complete explosion becomes stable. prevent.

〈実施例〉 以下に本発明の実施例を述べる。<Example> Examples of the present invention will be described below.

第3図の構成図において、スタータ・スイッチ21はこ
れがオンになることによって機関の始動を検出する手段
であって、該オン信号は点火時期制御手段22に入力さ
れる。
In the configuration diagram of FIG. 3, a starter switch 21 is a means for detecting engine starting when turned on, and the on signal is inputted to an ignition timing control means 22.

クランク角センサ23は機関回転速度を検出する手段で
あバ水温センサ24は機関温度この場合機関冷却水温度
を検出する手段であって、これら各センサ23.24の
検出信号は点火時期制御手段22に入力される。
The crank angle sensor 23 is a means for detecting the engine rotational speed, and the coolant temperature sensor 24 is a means for detecting the engine temperature, in this case the engine cooling water temperature. is input.

点火時期制御手段22は例えば人出方処理装置、中央演
算装置及び記憶装置からなるマイクロコンピュータによ
って構成され、ベースとなる機関冷却水温度に対応して
例えば第4図に示すようにROM22aに予め割付けら
れた始動時の点火進角値CRADVと、第5図に示すよ
うに機関回転速度によってROM22bに予め割付けら
れた点火進角回転補正係数αとを、前記検出された冷却
水温度及びクランキング速度に基づいて読み出す。
The ignition timing control means 22 is constituted by, for example, a microcomputer consisting of a turnout processing device, a central processing unit, and a storage device, and the ignition timing control means 22 is pre-allocated in the ROM 22a as shown in FIG. 4 in accordance with the base engine cooling water temperature. The detected ignition advance value CRADV at startup and the ignition advance rotation correction coefficient α pre-allocated in the ROM 22b according to the engine rotation speed as shown in FIG. Read based on.

そして点火時期決定手段22cにおいては読み取った点
火進角値と点火進角回転補正係数との積(CRADVX
α)をめ、これを実際制御すべき点火進角値CRADV
−REとして点火装置6の例えハパワートランジスタに
出力スル。
Then, in the ignition timing determining means 22c, the product of the read ignition advance value and the ignition advance rotation correction coefficient (CRADVX
α), and this is the ignition advance value CRADV that should be actually controlled.
- Output to the power transistor of the ignition device 6 as RE.

ここに、点火進角値は、冷却水温度が上昇する程小さく
なるようにROM22aに記憶され、苔た機関回転速度
が増大する程点火時期補正係数(≦1)が小さく(補正
率が大きく)即ち点火進角値が小さくなるようにROM
22bに記憶されている。
Here, the ignition advance value is stored in the ROM 22a so that it becomes smaller as the cooling water temperature rises, and the ignition timing correction coefficient (≦1) becomes smaller (the correction factor becomes larger) as the engine speed increases. In other words, the ROM is set so that the ignition advance value becomes small.
22b.

従って1ijA関低温始動時においては、クランキング
時が最も冷却水温度が低くかつ機関回転速度が小さいか
ら、点火時期決定手段22cにおいて演算される実際の
点火進角値CRADV−RE=CRADVXαは最も大
きくなって即ち最も進んで初爆が得やすくなる。クラン
キング中に一部の気筒で点火し初爆がくると、その後機
関回転速度が上昇する。この機関回転速度の上昇分だけ
点火進角回転補正係数αが小さくガるから、ROM22
aに記憶された冷却水温度のみに依存する点火進角値(
、RADV(クランキング中の冷却水温度は殆んど変化
しないからCRADVも変化しない)を徐々に小さくす
る方向に補正し、その結果初爆後の点火が早過ぎて逆転
方向に燃焼ガス圧力が加わることがなくなυ、機関停止
を防止できる。
Therefore, when starting at a low temperature of 1ijA, since the cooling water temperature is lowest and the engine speed is lowest during cranking, the actual ignition advance value CRADV-RE=CRADVXα calculated by the ignition timing determining means 22c is the largest. In other words, it will be the most advanced and it will be easier to get the first bomb. When some cylinders are ignited during cranking and the first explosion occurs, the engine speed increases. Since the ignition advance rotation correction coefficient α becomes smaller by the increase in engine rotation speed, the ROM22
Ignition advance value that depends only on the cooling water temperature stored in a (
, the RADV (the cooling water temperature during cranking hardly changes, so the CRADV also does not change) is corrected to gradually decrease, and as a result, the ignition after the first explosion is too early, and the combustion gas pressure increases in the reverse direction. This prevents the engine from stopping.

かかる作用をフローチャートとして第6図に示す。This operation is shown in FIG. 6 as a flowchart.

上記点火時期制御を冷却水温度が一30℃において行っ
た結果、第7図に示すように初爆失敗がなくなシかつ完
爆に至るまでの時間(始動時間)も大幅に短縮された。
As a result of performing the above-mentioned ignition timing control at a cooling water temperature of 130° C., as shown in FIG. 7, initial detonation failure was eliminated and the time until complete detonation (starting time) was significantly shortened.

尚図中X印は始動失敗、○印は初爆までにかかった時間
、・は完爆までにかかった時間である。
In the figure, the X mark indicates a startup failure, the ○ mark indicates the time it took to reach the first explosion, and the . mark indicates the time it took to complete the explosion.

尚上記実施例において、ベースを機関回転速度に対応し
た点火進角値にめとれを冷却水温度で補正してもよく、
或いは機関回転速度と冷却水温度に対応した点火進角値
の3次元マツプを記憶してこれを読み取るようにしでも
よいことはいうまでもない。
In the above embodiment, the base value may be adjusted to the ignition advance value corresponding to the engine speed, and the deviation may be corrected by the cooling water temperature.
Alternatively, it goes without saying that a three-dimensional map of ignition advance values corresponding to engine speed and cooling water temperature may be stored and read.

上記実施例においては始動時の点火時期制御についての
み説明しだが、始動終了後は通常の点火時期制御ルーチ
ンに移行することができるのは従来と同様である。
In the above embodiment, only the ignition timing control at the time of starting has been explained, but after the completion of starting, it is possible to shift to the normal ignition timing control routine, as in the conventional case.

〈発明の効果〉 以上述べたように本発明によると、機関温度が低いほど
点火進角を進めてクランキング時の初爆を容易に確保し
その後機関回転速度が上昇するにつれて点火進角値を小
さくするようにして完爆が安定するようにしたので、初
爆とその後の完爆が確実に得られ、もって初爆後の機関
停止を防止し得始動性が著しく向上する。とのように始
動が確実となるので、燃費の改善、バッテリ、スタータ
の小型化並びに軽量化が図られコストダウンをもたらす
ことができる。
<Effects of the Invention> As described above, according to the present invention, the lower the engine temperature is, the more the ignition advance is advanced to easily ensure the first explosion during cranking, and then as the engine speed increases, the ignition advance value is increased. Since the complete explosion is made stable by making the size smaller, the initial explosion and subsequent complete explosion are reliably obtained, thereby preventing the engine from stopping after the initial explosion and significantly improving startability. Since starting is ensured as shown in FIG.

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

第1図は従来装置の冷却水温度に応じた点火時期特性を
示すグラフ、第2図は従来装置の一例を示す系統図、第
3図は本発明における一実施例の構成を示すブロック図
、第4図は同上においてROMに記憶される冷却水温度
と点火進角値の関係を示すグラフ、第5図は同じ<RO
Mに記憶され結果を示すグラフである。 6・・・点火装置 21・・・スターク・スイッチ22
・・・点火時期制御手段 22a 、22b・・・RO
M 22c・・・点火時期決定手段 23・・・クラン
ク角センサ 24・・・水温センサ特許出願人 日産自
動車株式会社 代理人弁理士笹 島 富二雄 第4図 川 ン〈シ!p水二iJ (’C) 高 機関回転速度 (rpm) 高 第6図
FIG. 1 is a graph showing ignition timing characteristics according to cooling water temperature of a conventional device, FIG. 2 is a system diagram showing an example of a conventional device, and FIG. 3 is a block diagram showing the configuration of an embodiment of the present invention. Figure 4 is a graph showing the relationship between the cooling water temperature and the ignition advance value stored in the ROM in the same as above, and Figure 5 is the same as <RO.
It is a graph stored in M and showing the results. 6... Ignition device 21... Stark switch 22
...Ignition timing control means 22a, 22b...RO
M 22c...Ignition timing determining means 23...Crank angle sensor 24...Water temperature sensor Patent applicant Fujio Sasashima, Patent attorney representing Nissan Motor Co., Ltd. p water 2 iJ ('C) high engine rotational speed (rpm) high Fig. 6

Claims (1)

【特許請求の範囲】[Claims] 機関の始動を検出する手段と、機関温度を検出する手段
と、機関回転速度を検出する手段と、前記各手段からの
入力信号を受け機関始動時に機関温度の上昇に応じ及び
機関回転速度の増大に応じ点火進角値を小さくする点火
指令信号を点火装置に出力する点火時期制御手段と、を
設けたことを特徴とする内燃機開始動時の点火時期制御
装置。
means for detecting engine starting; means for detecting engine temperature; and means for detecting engine rotational speed; 1. An ignition timing control device for starting an internal combustion engine, comprising: ignition timing control means for outputting an ignition command signal to an ignition device to reduce an ignition advance value in accordance with the ignition timing.
JP58172078A 1983-09-20 1983-09-20 Ignition-timing controller on starting of internal- combustion engine Granted JPS6065279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58172078A JPS6065279A (en) 1983-09-20 1983-09-20 Ignition-timing controller on starting of internal- combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58172078A JPS6065279A (en) 1983-09-20 1983-09-20 Ignition-timing controller on starting of internal- combustion engine

Publications (2)

Publication Number Publication Date
JPS6065279A true JPS6065279A (en) 1985-04-15
JPS6240548B2 JPS6240548B2 (en) 1987-08-28

Family

ID=15935126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58172078A Granted JPS6065279A (en) 1983-09-20 1983-09-20 Ignition-timing controller on starting of internal- combustion engine

Country Status (1)

Country Link
JP (1) JPS6065279A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217368A (en) * 1985-07-15 1987-01-26 Toyota Motor Corp Ignition timing controller for internal-combustion engine
JPS6371476U (en) * 1986-10-29 1988-05-13
JPH024974U (en) * 1988-06-23 1990-01-12
JPH02169873A (en) * 1988-12-20 1990-06-29 Hitachi Ltd Ignition timing control device for internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217368A (en) * 1985-07-15 1987-01-26 Toyota Motor Corp Ignition timing controller for internal-combustion engine
JPS6371476U (en) * 1986-10-29 1988-05-13
JPH024974U (en) * 1988-06-23 1990-01-12
JPH02169873A (en) * 1988-12-20 1990-06-29 Hitachi Ltd Ignition timing control device for internal combustion engine

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JPS6240548B2 (en) 1987-08-28

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