JPS61252824A - Engine cooling fan control device - Google Patents

Engine cooling fan control device

Info

Publication number
JPS61252824A
JPS61252824A JP9374985A JP9374985A JPS61252824A JP S61252824 A JPS61252824 A JP S61252824A JP 9374985 A JP9374985 A JP 9374985A JP 9374985 A JP9374985 A JP 9374985A JP S61252824 A JPS61252824 A JP S61252824A
Authority
JP
Japan
Prior art keywords
internal combustion
combustion engine
radiator fan
fan
control device
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
JP9374985A
Other languages
Japanese (ja)
Other versions
JP2676198B2 (en
Inventor
Masahito Otsuka
大塚 雅仁
Takayuki Sugiura
杉浦 孝之
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.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor 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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP60093749A priority Critical patent/JP2676198B2/en
Publication of JPS61252824A publication Critical patent/JPS61252824A/en
Application granted granted Critical
Publication of JP2676198B2 publication Critical patent/JP2676198B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Combined Controls Of Internal Combustion Engines (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PURPOSE:To enable early stabilization of an idling operation condition and to improve operation performance, by providing a control circuit which stops operation of a motor-operated type radiator fan for a given time after the starting of an internal combustion engine. CONSTITUTION:A cooling fan control device 2 has a motor-operated type radiator fan 4 being a cooling fan for an internal combustion engine. The motor- operated type radiator fan 4 is communicated to a battery 10 through a water temperature switch 6, having a contact connected at a time when the temperature of cooling water for an internal combustion engine is increased to higher than a set value, and a radiator fan relay 8. A control circuit 12 stops operation of the motor-operated type radiator fan 4 during a given time after the starting of the internal combustion engine. This causes early stabilization of an idling operation condition, and enables improvement of operation performance.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明はエンジン冷却ファン制御装置に係り、特に内
燃機関の始動後の所定時間電動式ラジェータファンの稼
動を休止させてアイドリング運転状態を早期安定させ、
運転性能を向上し得るエンジン冷却ファン制御装置に関
する。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an engine cooling fan control device, and in particular to an engine cooling fan control device that stops the operation of an electric radiator fan for a predetermined period of time after starting an internal combustion engine to quickly stabilize an idling operating state. let me,
The present invention relates to an engine cooling fan control device that can improve driving performance.

[従来の技術] 内燃機関においては、内燃機関の構成部品の温度を適正
に保つために冷却装置が設けられている。
[Prior Art] In an internal combustion engine, a cooling device is provided to keep the temperature of the components of the internal combustion engine at an appropriate level.

この冷却装置には、空冷式と水冷式とがある。従来、自
動車等の内燃機関においては、使用条件に適合する水冷
式が多用されるに至っている。水冷式の内燃機関では、
ラジェータで冷却した冷却水をウォータポンプでシリン
ダブロックのウォータジャケットに圧送し、シリンダブ
ロックからシリンダヘッドに循環してラジェータに戻し
、電動式ラジェータファンで冷却するという循環を繰返
して内燃機関の冷却を行っている。この電動式ラジェー
タシアンは、水温スイッチで検知した内燃機関の冷却水
温度が設定値以上において稼動する。
This cooling device includes an air-cooled type and a water-cooled type. BACKGROUND ART Conventionally, in internal combustion engines such as automobiles, water-cooled engines that meet the usage conditions have come to be widely used. In a water-cooled internal combustion engine,
The internal combustion engine is cooled by repeatedly pumping the cooling water cooled by the radiator into the water jacket of the cylinder block with a water pump, circulating it from the cylinder block to the cylinder head, returning to the radiator, and cooling it with an electric radiator fan. ing. This electric radiator cyan operates when the internal combustion engine cooling water temperature detected by the water temperature switch is equal to or higher than a set value.

[発明が解決しようとする問題点] ところが、従来の内燃機関の冷却装置において、電動式
ラジェータファンは、内燃機関の再始動に際し冷却水温
度が設定値以上の場合に、内燃機関の始動運転操作する
イグニシッンスイッチ又はスタータスイッチがオン動作
すると同時に稼動する。
[Problems to be Solved by the Invention] However, in the conventional internal combustion engine cooling device, the electric radiator fan does not perform the starting operation of the internal combustion engine when the cooling water temperature is higher than the set value when restarting the internal combustion engine. It operates at the same time as the ignition switch or starter switch is turned on.

このため、内燃機関に電気負荷が加わって内燃機関の負
担が増大し、再始動直後のアイドリング回転数が所定時
間低下し、この結果アイドリング運転状態が不安定にな
ってエンジンストール等のエンジン不調を招く不都合が
あった。
For this reason, an electrical load is added to the internal combustion engine, increasing the burden on the internal combustion engine, and the idling speed decreases for a certain period of time immediately after restarting.As a result, the idling operating state becomes unstable and engine malfunctions such as engine stalling occur. It was an inconvenience.

[発明の目的] そこでこの発明の目的は、上述の不都合を除去し、内燃
機関の始動後の所定時間電動式ラジェータファンの稼動
を休止させ、内燃機関の電気負荷による負担を軽減して
アイドリング運転状態を早期安定させ、運転性能の向上
を果し得るエンジン冷却ファン制御装置を実現するにあ
る。
[Object of the Invention] Therefore, the object of the present invention is to eliminate the above-mentioned inconvenience, stop the operation of the electric radiator fan for a predetermined period of time after starting the internal combustion engine, and reduce the burden of the electrical load on the internal combustion engine so that the engine can run in idling mode. The object of the present invention is to realize an engine cooling fan control device that can quickly stabilize the condition and improve driving performance.

[問題点を解決するための手段] この目的を達成するためにこの発明は、内燃機関の冷却
水温度が設定値以上において稼動する電動式ラジェータ
ファンを設け、前記内燃機関の始動後の前記電動式ラジ
ェータファンの稼動を所定時間休止させる制御回路を設
けたことを特徴とする。
[Means for Solving the Problems] In order to achieve this object, the present invention provides an electric radiator fan that operates when the temperature of the cooling water of the internal combustion engine is equal to or higher than a set value. The present invention is characterized by the provision of a control circuit that suspends operation of the radiator fan for a predetermined period of time.

[作用] この発明の構成によれば、内燃機関の始動後の所定時間
電動式ラジェータファンの稼動を制御回路によって休止
させ、これにより内燃機関の電気負荷による負担を軽減
し、内燃機関の始動直後におけるアイドリング運転状態
を早期安定させ、運転性能を向上する。
[Operation] According to the configuration of the present invention, the operation of the electric radiator fan is stopped by the control circuit for a predetermined period of time after the internal combustion engine starts, thereby reducing the burden of the electrical load on the internal combustion engine, and immediately after starting the internal combustion engine. It quickly stabilizes the idling state of the vehicle and improves driving performance.

[発明の実施例] 以下この発明・の実施例を詳細且つ具体的に説明する。[Embodiments of the invention] Embodiments of this invention will be described in detail and specifically below.

第1〜3図はこの発明の実施例を示すものである。図に
おいて、2は冷却ファン制御装置であり、この冷却ファ
ン制御装置2は内燃機関(図示せず)の冷却ファンであ
る電動式ラジェータファン4を有している。この電動式
ラジェータファン4は、内燃機関の冷却水温度が設定値
以上で接点が接続する水温スイッチ6と、ラジェータフ
ァンリレー8とを介してバッテリlOに連絡されている
。前記ラジェータファンリレー8は、ECU (電子式
制御ユニット)等からなる制御回路12に連絡されてい
る。
1 to 3 show embodiments of this invention. In the figure, 2 is a cooling fan control device, and this cooling fan control device 2 has an electric radiator fan 4 that is a cooling fan for an internal combustion engine (not shown). This electric radiator fan 4 is connected to the battery IO via a water temperature switch 6 whose contacts are connected when the temperature of the cooling water of the internal combustion engine is equal to or higher than a set value, and a radiator fan relay 8. The radiator fan relay 8 is connected to a control circuit 12 consisting of an ECU (electronic control unit) or the like.

この制御回路12には、内燃機関の始動中のスタータ信
号を出力する例えばイグニションスイッチあるいはスタ
ータスイッチ等の始動回路14が連絡されているととも
に、アイドリング運転時のアイドル信号を出力するアイ
ドルスイッチ16が連絡されている。
This control circuit 12 is connected to a starting circuit 14 such as an ignition switch or a starter switch that outputs a starter signal during starting of the internal combustion engine, and also connected to an idle switch 16 that outputs an idle signal during idling operation. has been done.

前記制御回路12には、第2図に示す如く、設定値TR
Fが設定されている。前記電動式ラジェータファン4は
、検知した冷却水温度Twがこの設定値TRF以上の際
に稼動するものである。
The control circuit 12 has a set value TR as shown in FIG.
F is set. The electric radiator fan 4 operates when the detected cooling water temperature Tw is equal to or higher than the set value TRF.

以下、この実施例の作用を第2図のフローチャートに基
づいて説明する。
The operation of this embodiment will be explained below based on the flowchart of FIG.

内燃機関の再始動時において、イグニションスイッチを
オン状態にすると、制御回路12がスタートする。そし
て、制御回路12は、冷却水温度Twが設定値Tに1以
上になったか否かを判断する。
When the ignition switch is turned on when restarting the internal combustion engine, the control circuit 12 is started. Then, the control circuit 12 determines whether the cooling water temperature Tw has reached the set value T by 1 or more.

このとき、Tw≦TRFでNoの場合には、電動式ラジ
ェータファン4を稼動する必要がないので、制御回路1
2はラジェータファンリレー8に電気信号を出力しない
とともに、水温スイッチ6の接点が離間しているので、
電動式ラジェータファン4が稼動しない(RF  0F
F)、また、Tw≧TRFでYESの場合には、始動回
路14からスタータ信号が出力されたか否かを判断する
。そして、検知した冷却水温度TVが設定値TRF以上
で且つ始動回路14がスタータ信号を出力している場合
には、水温スイッチ6の接点が接続しているにも拘らず
、制御回路12がラジェータファンリレー8に電気信号
を出力していないので、電動式ラジェータファン4が稼
動しない(RF  OF F)。
At this time, if Tw≦TRF and No, there is no need to operate the electric radiator fan 4, so the control circuit 1
2 does not output an electrical signal to the radiator fan relay 8, and the contacts of the water temperature switch 6 are separated, so
Electric radiator fan 4 does not operate (RF 0F
F) If Tw≧TRF and YES, it is determined whether a starter signal is output from the starting circuit 14 or not. If the detected coolant temperature TV is equal to or higher than the set value TRF and the starting circuit 14 is outputting a starter signal, the control circuit 12 will start the radiator even though the contacts of the water temperature switch 6 are connected. Since no electric signal is output to the fan relay 8, the electric radiator fan 4 does not operate (RF OFF).

次いで、内燃機関の始動が終了して時間t(s ec)
以内か否か判断し、時間t(s ec)以内であるYE
Sの場合には電動式ラジェータファン4が稼動しない(
RF  OFF>。また、内燃機関の再始動後の所定時
間であるt (s e c)経過した場合には、制御回
路12がラジェータファンリレー8に電気信号を出力す
るとともに、水温スイッチ6の接点が接続しているので
、電動式ラジェータファン4が稼動する(RF  ON
)。これにより、冷却水温度TWが設定値TRF以上で
あるととともに内燃機関を再始動後に、電動式ラジェー
タファン4の稼動を所定時間t(sec)4本土させる
ことができるので、内燃機関に電気負荷が加わるのを回
避し、内燃機関の負担を軽減する。これにより、第3図
の実線で示す如く、再始動直後のアイドリング回転数の
立上りを、電動式ラジェータファン4が稼動した場合(
破線で示す)に比し、よくする。この結果、エンジン不
調が生ずるのを回避し、アイドリング運転状態を早期安
定させ、運転性能を向上する。
Next, the start of the internal combustion engine is completed and a time t (sec) elapses.
YE, which is within time t (sec).
In the case of S, the electric radiator fan 4 does not operate (
RF OFF>. Further, when a predetermined time t (sec) has elapsed after restarting the internal combustion engine, the control circuit 12 outputs an electric signal to the radiator fan relay 8, and the contacts of the water temperature switch 6 are connected. Therefore, the electric radiator fan 4 operates (RF ON
). As a result, since the cooling water temperature TW is equal to or higher than the set value TRF and the electric radiator fan 4 can be operated for a predetermined period of time t (sec) after restarting the internal combustion engine, the electric load is placed on the internal combustion engine. This reduces the burden on the internal combustion engine. As a result, as shown by the solid line in FIG. 3, when the electric radiator fan 4 operates (
(shown with a broken line). As a result, engine malfunction is avoided, idling operation is stabilized early, and driving performance is improved.

なお、この実施例においては、アイドルスイッチ16か
らのアイドリング状態を示すアイドル信号をスタータ信
号とともに制御回路12に入力させ、電動式ラジェータ
ファン4の稼動を制御させることも可能である。例えば
、アイドルスイッチ16のアイドル信号入力により内燃
機関がアイドリング運転を越えた運転状態で運転されて
いる場合に、電動式ラジェータファン4の電気負荷によ
る内燃機関への負担は僅少なので内燃機関の回転数を低
下させる問題を生ずることがない、そこで、冷却水温度
が設定値TRF以上で且つ再始動後に電動式ラジェータ
ファン4を休止させずに稼動するように制御することが
可能である。これにより、高負荷運転域には、電動式ラ
ジェータファン4が稼動するので、内燃機関の運転性能
の向上を図ることができる。
In this embodiment, it is also possible to input an idle signal indicating an idling state from the idle switch 16 to the control circuit 12 together with the starter signal to control the operation of the electric radiator fan 4. For example, when the internal combustion engine is operated at a state exceeding idling due to the input of the idle signal from the idle switch 16, the load on the internal combustion engine due to the electrical load of the electric radiator fan 4 is small, so the rotational speed of the internal combustion engine is Therefore, it is possible to control the electric radiator fan 4 so that the cooling water temperature is equal to or higher than the set value TRF and the electric radiator fan 4 operates without stopping after restarting. As a result, the electric radiator fan 4 operates in the high-load operating range, so it is possible to improve the operating performance of the internal combustion engine.

[発明の効果] 以上詳細な説明から明らかなようにこの発明によれば、
内燃機関の始動後の所定時間電動式ラジェータファンの
稼動を休止させる制御回路を設けたことにより、内燃機
関の始動の際に、内燃機関の電気負荷による負担を軽減
し、内燃機関始動直後における所定アイドリング回転数
を担保してアイドリング運転状態を早期安定させ、運転
性能の向上を果し得る。
[Effects of the Invention] As is clear from the detailed explanation above, according to the present invention,
By providing a control circuit that suspends operation of the electric radiator fan for a predetermined period of time after the internal combustion engine has started, the burden caused by the electrical load on the internal combustion engine can be reduced and The idling speed can be maintained to quickly stabilize the idling state, thereby improving driving performance.

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

第1〜3図はこの発明の実施例を示すもので、第1図は
冷却ファン制御装置の説明図、第2図は冷却ファン制御
装置の作用を示すフローチャート、第3図は回転数と時
間との関係を示すグラフ図である。 図において、2は冷却ファン制御装置、4は電動式ラジ
ェータファン、6は水温スイッチ、8はラジェータファ
ンリレー、12は制御回路、そして14は始動回路であ
る。
1 to 3 show examples of the present invention, in which FIG. 1 is an explanatory diagram of a cooling fan control device, FIG. 2 is a flowchart showing the operation of the cooling fan control device, and FIG. 3 is a rotation speed and time. FIG. In the figure, 2 is a cooling fan control device, 4 is an electric radiator fan, 6 is a water temperature switch, 8 is a radiator fan relay, 12 is a control circuit, and 14 is a starting circuit.

Claims (1)

【特許請求の範囲】[Claims] 内燃機関の冷却水温度が設定値以上において稼動する電
動式ラジエータファンを設け、前記内燃機関の始動後の
所定時間前記電動式ラジエータファンの稼動を休止させ
る制御回路を設けたことを特徴とするエンジン冷却ファ
ン制御装置。
An engine comprising: an electric radiator fan that operates when the temperature of the cooling water of the internal combustion engine exceeds a set value; and a control circuit that suspends operation of the electric radiator fan for a predetermined period of time after starting the internal combustion engine. Cooling fan control device.
JP60093749A 1985-05-02 1985-05-02 Engine cooling fan controller Expired - Lifetime JP2676198B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60093749A JP2676198B2 (en) 1985-05-02 1985-05-02 Engine cooling fan controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60093749A JP2676198B2 (en) 1985-05-02 1985-05-02 Engine cooling fan controller

Publications (2)

Publication Number Publication Date
JPS61252824A true JPS61252824A (en) 1986-11-10
JP2676198B2 JP2676198B2 (en) 1997-11-12

Family

ID=14091070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60093749A Expired - Lifetime JP2676198B2 (en) 1985-05-02 1985-05-02 Engine cooling fan controller

Country Status (1)

Country Link
JP (1) JP2676198B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02252557A (en) * 1989-03-27 1990-10-11 Diafoil Co Ltd Easy heat-sealing laminated polyester film
JPH0313427U (en) * 1989-06-26 1991-02-12
KR100302759B1 (en) * 1995-12-26 2001-11-30 이계안 Method for compensating engine idle speed of vehicle
US6730580B2 (en) * 2001-07-03 2004-05-04 Taiwan Semiconductor Manufacturing Co., Ltd. Silicon substrate wafer fabrication method employing halogen gettering material and/or plasma annealing
KR100440151B1 (en) * 2002-05-20 2004-07-12 현대자동차주식회사 Radiator fan motor controlling device of vehicle
JP2012149580A (en) * 2011-01-20 2012-08-09 Hino Motors Ltd Fan clutch control method, and system therefor
JP2018090152A (en) * 2016-12-06 2018-06-14 スズキ株式会社 Air-conditioning control device for vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021562U (en) * 1983-07-20 1985-02-14 国産電機株式会社 Power supply circuit for internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021562U (en) * 1983-07-20 1985-02-14 国産電機株式会社 Power supply circuit for internal combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02252557A (en) * 1989-03-27 1990-10-11 Diafoil Co Ltd Easy heat-sealing laminated polyester film
JPH0313427U (en) * 1989-06-26 1991-02-12
KR100302759B1 (en) * 1995-12-26 2001-11-30 이계안 Method for compensating engine idle speed of vehicle
US6730580B2 (en) * 2001-07-03 2004-05-04 Taiwan Semiconductor Manufacturing Co., Ltd. Silicon substrate wafer fabrication method employing halogen gettering material and/or plasma annealing
KR100440151B1 (en) * 2002-05-20 2004-07-12 현대자동차주식회사 Radiator fan motor controlling device of vehicle
JP2012149580A (en) * 2011-01-20 2012-08-09 Hino Motors Ltd Fan clutch control method, and system therefor
JP2018090152A (en) * 2016-12-06 2018-06-14 スズキ株式会社 Air-conditioning control device for vehicle

Also Published As

Publication number Publication date
JP2676198B2 (en) 1997-11-12

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