JPH07257331A - Maintenance indicating device for engine and power transmission device thereof - Google Patents

Maintenance indicating device for engine and power transmission device thereof

Info

Publication number
JPH07257331A
JPH07257331A JP5024194A JP5024194A JPH07257331A JP H07257331 A JPH07257331 A JP H07257331A JP 5024194 A JP5024194 A JP 5024194A JP 5024194 A JP5024194 A JP 5024194A JP H07257331 A JPH07257331 A JP H07257331A
Authority
JP
Japan
Prior art keywords
maintenance
engine
time
exhaust temperature
correction
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
JP5024194A
Other languages
Japanese (ja)
Other versions
JP2943899B2 (en
Inventor
Yuichiro Nabe
勇一郎 奈部
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.)
UD Trucks Corp
Original Assignee
UD Trucks Corp
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 UD Trucks Corp filed Critical UD Trucks Corp
Priority to JP5024194A priority Critical patent/JP2943899B2/en
Publication of JPH07257331A publication Critical patent/JPH07257331A/en
Application granted granted Critical
Publication of JP2943899B2 publication Critical patent/JP2943899B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To provide a maintenance indicating device for an engine and a power transmission device thereof, which can perform the maintenance at the appropriate time. CONSTITUTION:A maintenance indicating device is formed of a revolution sensor 4 for an engine 1, an exhaust temperature sensor 3 provided in an exhaust manifold 2, a computing means 7 connected to the revolution sensor 4 and the exhaust temperature sensor 3, and a display unit 8 for indicating the maintenance on the basis of the output from the computing means 7. A function for displaying with a display when the correction integrating the exceeds the rated maintenance time is also provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、エンジンおよびその動
力伝達装置のメンテナンス時期の指示装置の改良に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a maintenance time indicating device for an engine and its power transmission device.

【0002】[0002]

【従来の技術】例えば、エンジン駆動の発電機や建設機
械等のメンテナンス時期は、その設備の定格回転数と定
格負荷トルクで運転が行われることを前提として各種の
メンテナンス時期を決める事が一般に行われている。
2. Description of the Related Art For example, the maintenance time of an engine-driven generator or construction machinery is generally determined on the assumption that the equipment is operated at the rated speed and rated load torque. It is being appreciated.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、実際に
使用されている現場ではこれより低い運転条件で運転さ
れていることが多く、その結果必要以上に安全側でメン
テナンスが行われているのが実情で、稼働率の低下とな
り不経済でもある。
However, in actual use, it is often operated under operating conditions lower than this, and as a result, maintenance is performed on the safe side more than necessary. It is also uneconomical because the utilization rate decreases.

【0004】したがって、本発明は、適正時にメンテナ
ンスを行うことができるエンジンおよびその動力伝達装
置のメンテナンス指示装置を提供する事を目的としてい
る。
Therefore, an object of the present invention is to provide a maintenance instruction device for an engine and its power transmission device, which can perform maintenance at an appropriate time.

【0005】[0005]

【課題を解決するための手段】本発明によれば、エンジ
ンの回転センサと排気マニホールドに設けた排気温度セ
ンサと、前記回転センサおよび排気温度センサに接続さ
れた演算手段と、その演算手段からの出力によりメンテ
ナンスの指示をする表示部とよりなり、前記演算手段に
はあらかじめ回転数および排気温度の修正係数が記憶さ
れており、そして演算手段は前記回転数と排気温度と時
間と修正係数から補正積算時間を演算し、その演算した
補正積算時間と定格運転時のメンテナンス時間とを比較
し、補正積算時間が定格時のメンテナンス時間を越えた
ときに表示器が表示する機能を有している。
According to the present invention, a rotation sensor of an engine, an exhaust temperature sensor provided in an exhaust manifold, an arithmetic means connected to the rotation sensor and the exhaust temperature sensor, and an arithmetic means from the arithmetic means. A display unit for instructing maintenance by output, and a correction coefficient for the rotation speed and the exhaust temperature is stored in advance in the calculation means, and the calculation means corrects from the rotation speed, the exhaust temperature, the time, and the correction coefficient. The integrated time is calculated, the calculated corrected integrated time is compared with the maintenance time during rated operation, and the display has a function of displaying when the corrected integrated time exceeds the rated maintenance time.

【0006】また、本発明によれば、さらに演算手段が
定格点のエンジンの回転数、定格点の絶対排気温度での
補正係数を1として、他の点の補正係数を正比例関係に
直線近似して補正係数を求めて補正積算時間を計算す
る。
Further, according to the present invention, the calculating means further linearly approximates the correction factors at other points to the direct proportional relationship while setting the correction factor at the engine speed at the rated point and the absolute exhaust temperature at the rated point to 1. Then, the correction coefficient is obtained to calculate the correction integration time.

【0007】[0007]

【作用効果の説明】上記のように構成されたエンジンお
よびその動力伝達装置のメンテナンス指示装置におい
て、実際にエンジンが使用された回転数および付加トル
クに応じて補正した運転時間を積算し、それが定格運転
時のメンテナンス時間と比較されて定格運転時のメンテ
ナンス時間を越えたとき表示器に指示を出しメンテナン
スを行うので、より無駄のないメンテナンスが実行でき
る。
[Description of Operation and Effects] In the maintenance instruction device for the engine and its power transmission device configured as described above, the operating time corrected in accordance with the rotational speed and the additional torque at which the engine is actually used is integrated, and When the maintenance time for the rated operation is exceeded compared to the maintenance time for the rated operation, an instruction is given to the display unit to perform the maintenance, so that more efficient maintenance can be performed.

【0008】[0008]

【実施例】以下、図面を参照して、本発明の実施例を説
明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0009】図1において、エンジン1の排気マニホー
ルド2には排気温度センサ3が取付けられ、フライホイ
ルハウジング5にはエンジンの回転数を検出する回転セ
ンサ4が設けられている。そして、フライホイル5aに
は駆動軸7を介して負荷装置6が取付けられている。
In FIG. 1, an exhaust temperature sensor 3 is attached to an exhaust manifold 2 of an engine 1, and a flywheel housing 5 is provided with a rotation sensor 4 for detecting the number of revolutions of the engine. The load device 6 is attached to the flywheel 5a via the drive shaft 7.

【0010】また、排気温度センサ3は電気回路8を介
して演算手段である演算器7に接続され、回転センサ4
は電気回路9を介して演算器7に接続されている。そし
て、演算器で計算した結果のメンテナンスデータは演算
器の表示器8aに表示されるよう構成されている。な
お、符号1aはクーリングファン、符号1bはオイルパ
ンをそれぞれ示している。
Further, the exhaust gas temperature sensor 3 is connected to an arithmetic unit 7 which is an arithmetic means via an electric circuit 8, and a rotation sensor 4
Is connected to the computing unit 7 via an electric circuit 9. Then, the maintenance data as a result of calculation by the arithmetic unit is configured to be displayed on the display unit 8a of the arithmetic unit. Reference numeral 1a indicates a cooling fan, and reference numeral 1b indicates an oil pan.

【0011】図2はメンテナンス指示装置のブロックダ
イヤグラムを示し、回転センサ4と排気温度センサ3と
はそれぞれマルチプレクサ10に接続され、そのマルチ
プレクサ10はローパスフィルタ(LPF)11および
サンプル&ホールド(S&H)12を介してA/D変換
回路13に接続されている。
FIG. 2 is a block diagram of the maintenance instruction device. The rotation sensor 4 and the exhaust temperature sensor 3 are connected to a multiplexer 10, and the multiplexer 10 has a low-pass filter (LPF) 11 and a sample & hold (S & H) 12. Is connected to the A / D conversion circuit 13 via.

【0012】また、そのA/D変換回路13は演算器7
のデータバス15、アドレスバス16、制御バス17に
それぞれ接続され、データバス15は表示器8aに接続
されている。
Further, the A / D conversion circuit 13 is an arithmetic unit 7
Are connected to the data bus 15, the address bus 16 and the control bus 17, respectively, and the data bus 15 is connected to the display 8a.

【0013】また、A/D変換回路13はアドレスデコ
ーダ制御回路14に接続され、そのアドレスデコーダ制
御回路14はS&H12とマルチプレクサ10とに接続
されている。
The A / D conversion circuit 13 is connected to the address decoder control circuit 14, and the address decoder control circuit 14 is connected to the S & H 12 and the multiplexer 10.

【0014】作動の説明にあたり、まずトルクと回転数
の関係に付いて説明する。
Before explaining the operation, the relationship between the torque and the rotational speed will be described first.

【0015】エンジンおよび動力伝達系の耐久性に影響
する要因として、時間当たりに発生する仕事量と運転時
間との積である全仕事量に比例する事は知られている。
そして、時間当たりの仕事量は回転数と負荷トルクとの
積で表される。
It is known that the factor affecting the durability of the engine and the power transmission system is proportional to the total work amount which is the product of the work amount generated per hour and the operating time.
The work amount per hour is represented by the product of the rotation speed and the load torque.

【0016】また、エンジン負荷トルクと排気温度とに
は相関関係が存在し、図3において、測定の容易な排気
温度を測定すれば、負荷トルクを測定する必要がない事
を示している。
Further, there is a correlation between the engine load torque and the exhaust temperature, and FIG. 3 shows that if the exhaust temperature which can be easily measured is measured, it is not necessary to measure the load torque.

【0017】そして、図4は実験結果を整理して求めた
エンジンの回転数と補正係数の関係を示し、図5は同様
にして求めたエンジンの排気温度(絶対温度°K)と補
正係数の関係を示している。
FIG. 4 shows the relationship between the engine speed and the correction coefficient obtained by arranging the experimental results. FIG. 5 shows the engine exhaust temperature (absolute temperature K) and the correction coefficient obtained in the same manner. It shows the relationship.

【0018】また、図6は上記の回転数に対する補正係
数と排気温度に対する補正係数とから、ある回転、排気
温度で運転した場合の、定格運転時を1とした実働時間
補正係数Khの経時変動を例示するものである。
FIG. 6 shows, from the correction coefficient for the rotational speed and the correction coefficient for the exhaust gas temperature, the variation with time of the actual working time correction coefficient Kh, which is 1 when the engine is operated at a certain rotation speed and exhaust gas temperature. Is an example.

【0019】 ここで、 排気温度に対する補正係数;Kt 回転数に対する補正係数 ;Kn 実働時間補正係数 ;Kh 補正時間 ;Th 実運転時間 ;Δt とすると Kh=Kt×Kn Th=Kh×△t の関係がある。Here, correction coefficient for exhaust temperature; Kt correction coefficient for rotation speed; Kn actual working time correction coefficient; Kh correction time; Th actual operating time; Δt, Kh = Kt × Kn Th = Kh × Δt There is.

【0020】したがって、図7を参照して、エンジンが
運転を開始すると、回転信号、排気温度信号をタイムシ
ェアリングで取込み(ステップS1)、積算運転時間計
の作動を開始し(ステップS2)、回転信号、排気温度
信号により演算器7のデータバス15に記憶させてある
実働時間補正係数Khのテーブル(図8参照)から補正
係数を読みだし、(ステップS3)、短い一定時間△t
毎に前記補正係数で補正した補正時間を求める(ステッ
プS4)。
Therefore, referring to FIG. 7, when the engine starts to operate, the rotation signal and the exhaust temperature signal are taken in by time sharing (step S1), and the operation of the integrated operation time meter is started (step S2). The correction coefficient is read from the table (see FIG. 8) of the actual working time correction coefficient Kh stored in the data bus 15 of the calculator 7 according to the rotation signal and the exhaust gas temperature signal (step S3), and the short constant time Δt.
The correction time corrected by the correction coefficient is obtained for each (step S4).

【0021】そして、運転を継続している間、上記の作
動を繰返して修正積算時間に加算し(ステップS5)、
図9に例示するメンテナンステーブルの積算時間と補正
積算時間とを比較し(ステップS6)、負数の場合は戻
り、正数の場合、すなわち時間に達していれば、積算時
間に相当するメンテナンス項目を表示して制御を終わ
る。
Then, while the operation is continued, the above operation is repeated to add to the corrected integrated time (step S5),
The accumulated time in the maintenance table illustrated in FIG. 9 is compared with the corrected accumulated time (step S6). If the number is negative, the process returns. If the number is positive, that is, if the time has been reached, the maintenance item corresponding to the accumulated time is set. Display and end control.

【0022】図10および図11は、第2実施例の回転
数に対する定格運転時(点Pで示す)を1とした補正係
数と排気温度(絶対温度)に対する補正係数とを示し、
いずれも鎖線で示す通り近似の直線で補正係数を決め、
それによって、実績時間補正係数のテーブルを演算器7
のデータバス15に記憶させること以外第1実施例と同
様である。
FIG. 10 and FIG. 11 show a correction coefficient for the number of revolutions of the second embodiment, which is 1 at the time of rated operation (indicated by point P), and a correction coefficient for the exhaust temperature (absolute temperature).
In both cases, the correction coefficient is determined by an approximate straight line as shown by the chain line,
Thereby, the table of the actual time correction coefficient is calculated by the calculator 7
The same as in the first embodiment except that the data is stored in the data bus 15.

【0023】多数の実験から実際の係数を決めることは
非常に多くの工数を必要とし面倒な作業であるので、直
線で近似させたもので、実用上は定格運転を想定してメ
ンテナンスすることに比較すれば、はるかに実際に近い
メンテナンスができる。
Determining the actual coefficient from a large number of experiments requires a great deal of man-hours and is a troublesome work. Therefore, it is approximated by a straight line, and in practice, it is assumed that the rated operation is performed for maintenance. By comparison, maintenance can be done much closer to reality.

【0024】[0024]

【発明の効果】本発明によれば、以下に示すような優れ
た効果を奏する。
According to the present invention, the following excellent effects are exhibited.

【0025】(1) エンジンの負荷の種類とエンジン
の運転状態に則した時期にメンテナンスすることが可能
である。
(1) It is possible to perform maintenance at a time according to the type of load on the engine and the operating state of the engine.

【0026】(2) 個人差のない適正なメンタナンス
ができる。
(2) Appropriate maintenance can be performed without individual differences.

【0027】(3) したがって、無駄なメンテナンス
を防止する事ができ、稼働率が向上し経済的である。
(3) Therefore, useless maintenance can be prevented, the operating rate is improved, and it is economical.

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

【図1】本発明の一実施例を示す全体構成図。FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

【図2】図1のブロックダイヤグラム図。FIG. 2 is a block diagram of FIG.

【図3】排気温度とトルクと回転の関係を示す図。FIG. 3 is a diagram showing a relationship among exhaust temperature, torque, and rotation.

【図4】回転と補正係数の関係を示す図。FIG. 4 is a diagram showing a relationship between rotation and a correction coefficient.

【図5】排気温度と補正係数の関係を示す図。FIG. 5 is a diagram showing a relationship between an exhaust temperature and a correction coefficient.

【図6】実働時間補正係数の例を示す図。FIG. 6 is a diagram showing an example of an actual working time correction coefficient.

【図7】制御のフローチャート図。FIG. 7 is a flowchart of control.

【図8】実働時間補正係数テーブルの例を示す図。FIG. 8 is a diagram showing an example of an actual working time correction coefficient table.

【図9】メンテナンステーブルの例を示す図。FIG. 9 is a diagram showing an example of a maintenance table.

【図10】回転と近似補正係数の関係を示す図。FIG. 10 is a diagram showing a relationship between rotation and an approximate correction coefficient.

【図11】排気温度と近似補正係数の関係を示す図。FIG. 11 is a diagram showing a relationship between an exhaust temperature and an approximate correction coefficient.

【符号の説明】[Explanation of symbols]

1…エンジン 2…排気マニホールド 3…排気温度センサ 4…回転センサ 5…フライホイルハウジング 5a…フライホイル 6…負荷装置 7…駆動軸 8、9…電気回路 DESCRIPTION OF SYMBOLS 1 ... Engine 2 ... Exhaust manifold 3 ... Exhaust temperature sensor 4 ... Rotation sensor 5 ... Flywheel housing 5a ... Flywheel 6 ... Load device 7 ... Drive shaft 8, 9 ... Electric circuit

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 エンジンの回転センサと排気マニホール
ドに設けた排気温度センサと、前記回転センサおよび排
気温度センサに接続された演算手段と、その演算手段か
らの出力によりメンテナンスの指示をする表示部とより
なり、前記演算手段にはあらかじめ回転数および排気温
度の修正係数が記憶されており、そして演算手段は前記
回転数と排気温度と時間と修正係数から補正積算時間を
演算し、その演算した補正積算時間と定格運転時のメン
テナンス時間とを比較し、補正積算時間が定格時のメン
テナンス時間を越えたときに表示器が表示する機能を有
することを特徴とするエンジンおよびその動力伝達装置
のメンテナンス指示装置。
1. A rotation sensor of an engine, an exhaust temperature sensor provided in an exhaust manifold, a calculation means connected to the rotation sensor and the exhaust temperature sensor, and a display section for instructing maintenance by an output from the calculation means. The correction means for the rotational speed and the exhaust temperature are stored in advance in the calculation means, and the calculation means calculates the correction integration time from the rotation speed, the exhaust temperature, the time, and the correction coefficient, and the calculated correction A maintenance instruction for the engine and its power transmission device, which has a function of comparing the accumulated time with the maintenance time during rated operation and displaying on the display when the corrected accumulated time exceeds the maintenance time during rated operation apparatus.
【請求項2】 定格点のエンジンの回転数、定格点の絶
対排気温度での補正係数を1として、他の点の補正係数
を正比例関係に直線近似して補正係数を求めて補正積算
時間を計算することを特徴とする請求項1に記載のエン
ジンおよびその動力伝達装置のメンテナンス指示装置。
2. The correction coefficient at the rated point engine speed and the absolute exhaust temperature at the rated point is set to 1, and the correction coefficients at other points are linearly approximated to a direct proportional relationship to obtain the correction coefficient and the correction integration time is calculated. The maintenance instruction device for an engine and its power transmission device according to claim 1, wherein the maintenance instruction device is calculated.
JP5024194A 1994-03-22 1994-03-22 Maintenance instruction device for engine and its power transmission device Expired - Lifetime JP2943899B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5024194A JP2943899B2 (en) 1994-03-22 1994-03-22 Maintenance instruction device for engine and its power transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5024194A JP2943899B2 (en) 1994-03-22 1994-03-22 Maintenance instruction device for engine and its power transmission device

Publications (2)

Publication Number Publication Date
JPH07257331A true JPH07257331A (en) 1995-10-09
JP2943899B2 JP2943899B2 (en) 1999-08-30

Family

ID=12853504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5024194A Expired - Lifetime JP2943899B2 (en) 1994-03-22 1994-03-22 Maintenance instruction device for engine and its power transmission device

Country Status (1)

Country Link
JP (1) JP2943899B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015072238A1 (en) * 2014-09-30 2015-05-21 株式会社小松製作所 Construction equipment and operating-status management system for construction equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015072238A1 (en) * 2014-09-30 2015-05-21 株式会社小松製作所 Construction equipment and operating-status management system for construction equipment
JP6088049B2 (en) * 2014-09-30 2017-03-01 株式会社小松製作所 Construction machinery
US9792737B2 (en) 2014-09-30 2017-10-17 Komatsu Ltd. Construction machine and operation state management system for the same

Also Published As

Publication number Publication date
JP2943899B2 (en) 1999-08-30

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