JPS597272A - Self-diagnosis starting system of self-diagnosing device of engine for motorcar - Google Patents
Self-diagnosis starting system of self-diagnosing device of engine for motorcarInfo
- Publication number
- JPS597272A JPS597272A JP57115500A JP11550082A JPS597272A JP S597272 A JPS597272 A JP S597272A JP 57115500 A JP57115500 A JP 57115500A JP 11550082 A JP11550082 A JP 11550082A JP S597272 A JPS597272 A JP S597272A
- Authority
- JP
- Japan
- Prior art keywords
- self
- diagnosis
- time
- timer
- 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
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Of Engines (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は自動車用エンジンの自己診断装置に関する。[Detailed description of the invention] The present invention relates to a self-diagnosis device for an automobile engine.
従来、電子制御燃料噴射システムを備えた自動車用エン
ジンにおいて、センサ類を含め制御回路か正しく働いて
いるか否かをチェックするための自己診断装置を設けた
ものがある。2. Description of the Related Art Conventionally, some automobile engines equipped with an electronically controlled fuel injection system are equipped with a self-diagnosis device for checking whether a control circuit including sensors is working properly.
ところで、従来の自己診断装置は、電源が役人された時
点（エンシンキースイノヂがオン）から制御回路の通常
の演算ルーチンと平行して自己診断を行なうものと、専
用の入力端子を有し、入力信号を受けたときから自己診
断を開始するものとにわけられる。By the way, conventional self-diagnosis devices perform self-diagnosis in parallel with the normal calculation routine of the control circuit from the moment the power is turned on (engine key function is turned on), and have a dedicated input terminal. Self-diagnosis starts when an input signal is received.
しかし、前者のものは演算ルーチンの処理に悪影響を与
え、また後者のものは専用に入力端子が必要となり、い
ずれにしても性能、コスト面での負担が大きくなるとい
う問題点があった。However, the former method has a negative effect on the processing of the arithmetic routine, and the latter method requires a dedicated input terminal, which in any case poses a problem in terms of performance and cost.
本発明はこのような従来の問題点を解決することを目的
としてなされたもので、電源が投入された時点から時間
計測を開始し、エンジンの点火信号の毎にクリアされて
再び時間δ１測を開始するタイマを備え、このタイマの
計測時間が設定時間以上になったときに自己診断を開始
するようにした自己診断開始システムを提供することに
より、電源投入からクランキング開始までに時間を要し
た場合やエンストを生じた場合などにのみ自己診断を行
なうようにして、通常の演算ルーチンへの悪影響を極力
避け、また専用の診断開始用入力端子を不要とし、もっ
て性能、コスト面への負担を軽減するようにしたもので
ある。The present invention was made with the aim of solving these conventional problems.The present invention starts time measurement from the moment the power is turned on, is cleared every time the engine ignition signal is received, and then measures the time δ1 again. By providing a self-diagnosis start system that includes a timer to start the self-diagnosis and starts the self-diagnosis when the time measured by this timer exceeds the set time, it is possible to eliminate the time required from turning on the power to starting cranking. By performing self-diagnosis only when the engine stalls or when the engine stalls, the system avoids negative effects on normal calculation routines as much as possible, and eliminates the need for a dedicated input terminal for starting the diagnosis, thereby reducing the burden on performance and cost. It was designed to reduce this.
以下、実施例を説明する。Examples will be described below.
本発明に係る自己診断装置には、エンジンキースイッチ
（アクセサリ−接点）がオンされて、システムに電源が
投入されると時間計測を開始するタイマが備えられてお
り、このタイマに関係するフローチャートを第１図に示
しである。The self-diagnosis device according to the present invention is equipped with a timer that starts measuring time when the engine key switch (accessory contact) is turned on and power is supplied to the system. This is shown in FIG.
第１図左側が一定周期（例えば６５．５ｍ５）毎に行な
われるタイマルーチンで、１１０のタイマインクリメン
トでカウントアツプする。１２０では例えば８ヒツトの
カウント値が１０進で２５５ （１６進でＦＰ）を越
えた（オーバーフロー）か否かを判定し、越えない場合
は、１４０ヘジヤンプして、カラン１−値を設定値と比
較し、カウント値が設定値より小さい場合には、１６０
ヘジヤンプして、図示しないメインルーチンへリターン
する。The left side of FIG. 1 shows a timer routine that is performed every fixed period (for example, 65.5 m5), and counts up with a timer increment of 110. 120, for example, determines whether the count value of 8 hits exceeds 255 in decimal (FP in hexadecimal) (overflow), and if it does not, jumps to 140 and sets the Callan 1-value as the set value. Compare and if the count value is smaller than the set value, 160
The program then jumps back and returns to the main routine (not shown).
一方、第１図右側−は前記タイマルーチンと並行してエ
ンジンの点火信号が入力される毎に行なわれる点火信号
処理ルーチンで、２１０でタイマをクリア（リセット）
シ、２２０でメインルーチンへリターンする。On the other hand, on the right side of FIG. 1 is an ignition signal processing routine that is executed every time an engine ignition signal is input in parallel with the timer routine, and the timer is cleared (reset) at 210.
Step 220 returns to the main routine.
したがって、第２図のタイミングチャートをあわせて参
照し、電源投入（アクナナり一接点がオン）からスター
タ接点がオンされて第１回目の点火信号により点火信号
処理ルーチンにおいてタイマがクリアされるまでの時間
が極端に長くなければ、タイマルーチンにおいて１１０
のタイマインクリメン１−を通過する毎にカウントアツ
プされるカウント値が１４０で比較される設定値より小
さく、自己診断は開始されない。Therefore, with reference to the timing chart in Fig. 2, the period from power-on (one contact is turned on) until the starter contact is turned on and the timer is cleared in the ignition signal processing routine by the first ignition signal. 110 in the timer routine unless the time is extremely long.
The count value counted up each time the timer increment 1- is passed is smaller than the set value compared at 140, and self-diagnosis is not started.
これとは逆に、電源投入からクランキングまでの時間が
長く第１回目の点火信号が入力されるまでにかなりの時
間を要したときは、タイマルーチンにおいて１１０のタ
イマインクリメントを通過する毎にカウントアンプされ
るカウント値が大きくなり、１４０での設定値との比較
でカウント値の方が大きくなるので、１５０の自己診断
開始準備（フラグセット）へ移行して後、リターンする
。これにより自己診断が開始される。On the other hand, if the time from power-on to cranking is long and it takes a considerable amount of time until the first ignition signal is input, the timer routine will count every time the timer increments 110. The amplified count value becomes larger, and the count value becomes larger when compared with the set value at 140, so the process moves to 150, preparation for starting self-diagnosis (flag setting), and then returns. This starts self-diagnosis.
尚、１１０のタイマインクリメン１−〇カランＩ・値が
２５５ （１’Ｆ）を越えた場合はカウント値が０（
１６進で００）に戻ってしまうので、１２０のオーバー
フローで比較し、越えた場合（カウント値が０の場合）
は、１３０のタイマディクリメントを通過さセてカウン
トダウンし、すなわちカウント値を２５５に戻してから
１４０の比較へ移行するようにし、誤゛Ｆ１１定を防止
している。In addition, if the timer increment 1-0 callan I value of 110 exceeds 255 (1'F), the count value will be 0 (
Since it returns to 00 in hexadecimal, compare it with an overflow of 120, and if it exceeds (if the count value is 0)
The timer decrements at 130 and counts down, that is, returns the count value to 255 before proceeding to the comparison at 140 to prevent false F11 determination.
勿論、タイマが点火信号によってクリアされた後も、タ
イマルーチンは続行され、タイマは点火信号から次の点
火信号までの時間計測を行なう。Of course, even after the timer is cleared by the ignition signal, the timer routine continues, and the timer measures the time from one ignition signal to the next.
したがって、第２図のタイミングチャートを参照し、途
中でエンストを生じた場合、再始動までの時間がかかれ
ば、自己診断が開始され、また電源投入からスタータ接
点をオンするまでの時間を故意に遅らせた場合なども自
己給断Ｑ始される。Therefore, referring to the timing chart in Fig. 2, if the engine stalls during the process, self-diagnosis will start if it takes time to restart, and the time from turning on the power until turning on the starter contact will be Even if you delay, self-supply Q will start.
以上説明したように本発明によれば、自己診断開始のた
めの専用入力ポートを必要とせす、コスト面での負圧が
小さくなり、且つ、；七時診断を行なわないので、診断
を行なわない通常の場合、演算ルーチンへの悪影響をな
くすることができるという効果が得られる。As explained above, according to the present invention, the negative pressure required in terms of cost due to the need for a dedicated input port for starting self-diagnosis is reduced; In a normal case, the effect is that the negative influence on the arithmetic routine can be eliminated.
第１図は本発明の一実施例を示すフローチャート、第２
図は同上の動作の態様を示すタイミングチャートである
。
特許出願人 日本電子機器株式会社
代理人 弁理士 笹 島 富二雄FIG. 1 is a flowchart showing one embodiment of the present invention, and FIG.
The figure is a timing chart showing the mode of operation same as above. Patent applicant: Japan Electronics Co., Ltd. Agent: Fujio Sasashima
Claims (1)
された時点から時間計測を開始し、エンジンの点火信号
の毎にクリアされて再び時間計測を開始するタイマを備
え、このタイマの計測時間が設定時間以上になったとき
に自己診断を開始するようにしたことを特徴とする自己
診断開始システム。A self-diagnosis device for an automobile engine is equipped with a timer that starts measuring time from the moment the power is turned on, is cleared every time the engine ignition signal is received, and starts measuring time again, and the time measured by this timer is equal to the set time. A self-diagnosis starting system characterized in that the self-diagnosis is started when the above conditions are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115500A JPS597272A (en) | 1982-07-05 | 1982-07-05 | Self-diagnosis starting system of self-diagnosing device of engine for motorcar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115500A JPS597272A (en) | 1982-07-05 | 1982-07-05 | Self-diagnosis starting system of self-diagnosing device of engine for motorcar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS597272A true JPS597272A (en) | 1984-01-14 |
Family
ID=14664043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57115500A Pending JPS597272A (en) | 1982-07-05 | 1982-07-05 | Self-diagnosis starting system of self-diagnosing device of engine for motorcar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597272A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5956880U (en) * | 1982-09-30 | 1984-04-13 | 日本電気ホームエレクトロニクス株式会社 | Clock pulse generation circuit |
| CN113702725A (en) * | 2020-05-20 | 2021-11-26 | 浙江绍兴苏泊尔生活电器有限公司 | Testing method and device for household appliance, household appliance and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263530A (en) * | 1975-11-19 | 1977-05-26 | Hitachi Ltd | Electronic progressive angle circuit |
-
1982
- 1982-07-05 JP JP57115500A patent/JPS597272A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263530A (en) * | 1975-11-19 | 1977-05-26 | Hitachi Ltd | Electronic progressive angle circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5956880U (en) * | 1982-09-30 | 1984-04-13 | 日本電気ホームエレクトロニクス株式会社 | Clock pulse generation circuit |
| CN113702725A (en) * | 2020-05-20 | 2021-11-26 | 浙江绍兴苏泊尔生活电器有限公司 | Testing method and device for household appliance, household appliance and storage medium |
| CN113702725B (en) * | 2020-05-20 | 2024-02-13 | 浙江绍兴苏泊尔生活电器有限公司 | Household appliance testing method and device, household appliance and storage medium |
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