JPH09195767A - Cooling fan control device - Google Patents
Cooling fan control deviceInfo
- Publication number
- JPH09195767A JPH09195767A JP896996A JP896996A JPH09195767A JP H09195767 A JPH09195767 A JP H09195767A JP 896996 A JP896996 A JP 896996A JP 896996 A JP896996 A JP 896996A JP H09195767 A JPH09195767 A JP H09195767A
- Authority
- JP
- Japan
- Prior art keywords
- cooling fan
- current
- control
- cooling
- control current
- 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
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、必要な時に必要な
冷却能力が得られるようにした冷却ファン制御装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling fan control device capable of obtaining a required cooling capacity when needed.
【０００２】[0002]
【従来の技術】従来、特開平３−２５３７１８号公報
は、冷媒圧力スイッチの作動状態から、冷媒圧力状態と
冷却水温の何れか一方に基づき冷却ファンの回転数制御
を行う油圧駆動ファンの回転数制御装置において、冷媒
圧力スイッチの作動時間を計測し、基準値と比較して、
ファン回転数の増減制御を行う装置を提供している。そ
の作用、効果は、冷媒の急激な温度変化、頻繁な冷媒圧
力スイッチのオン、オフ動作がなくなり、騒音の発生が
抑制されることにあった。2. Description of the Related Art Conventionally, Japanese Patent Laid-Open No. 3-253718 discloses a rotation speed of a hydraulically driven fan that controls the rotation speed of a cooling fan based on either the refrigerant pressure state or the cooling water temperature from the operating state of a refrigerant pressure switch. In the control device, measure the operating time of the refrigerant pressure switch, compare with the reference value,
A device for controlling increase / decrease in fan speed is provided. The action and effect are that abrupt temperature change of the refrigerant, frequent on / off operations of the refrigerant pressure switch are eliminated, and noise generation is suppressed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記の従来装
置では、冷却ファンの回転数制御が水温と冷媒圧力状態
のみによって制御されている。その結果、エアコン負荷
に対し最適な冷却ファン回転数が得られるとは限らな
い。たとえば、車室内が十分に冷えているにもかかわら
ず高回転で冷却ファンを回転させたり、もっと冷房を効
かせなければならない時に冷却ファン回転数を低くしす
ぎて冷房の応答性を悪化させたりする場合がある。本発
明の目的は、エアコン負荷に対し最適なファン回転数が
得られる冷却ファン制御装置を提供することにある。However, in the above-mentioned conventional apparatus, the rotation speed control of the cooling fan is controlled only by the water temperature and the refrigerant pressure state. As a result, the optimum cooling fan rotation speed is not always obtained for the air conditioner load. For example, the cooling fan is rotated at a high speed even if the passenger compartment is sufficiently cold, or the cooling fan rotational speed is too low when cooling is required to be more effective, which deteriorates cooling responsiveness. There is a case. An object of the present invention is to provide a cooling fan control device that can obtain an optimum fan rotation speed for an air conditioner load.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する本発
明はつぎの通りである。 （１） 空調装置の熱交換部へ冷却風を送る冷却ファン
の回転数を制御する冷却ファン制御装置であって、冷却
水温を検出する水温検出手段と、冷媒圧力状態を検出す
る冷媒圧力状態検出手段と、冷却水温に基づき冷却ファ
ンの制御電流Ｉ0を決定するＩ0 電流決定手段と、空調
装置吹出風要求温度に基づき冷却ファンの制御電流Ｉ1
を決定するＩ1 電流決定手段と、制御電流Ｉ0 と制御電
流Ｉ1 とを比較する比較手段と、冷媒圧力が所定値より
低い時には冷却ファンへの出力電流Ｉを前記制御電流Ｉ
0 とし冷媒圧力が所定値以上の時には冷却ファンへの出
力電流Ｉを前記制御電流Ｉ1 と前記制御電流Ｉ0 との何
れか大きい方とする出力電流決定手段と、を有する冷却
ファン制御装置。 （２） 前記Ｉ1 電流決定手段において、空調装置吹出
風要求温度が低温時ほど制御電流Ｉ1 を高くした（１）
記載の冷却ファン制御装置。The present invention to achieve the above object is as follows. (1) A cooling fan control device for controlling the number of rotations of a cooling fan that sends cooling air to a heat exchange section of an air conditioner, the cooling water temperature detecting means for detecting cooling water temperature, and the refrigerant pressure state detection for detecting the refrigerant pressure state Means, I 0 current determining means for determining the control current I 0 of the cooling fan based on the cooling water temperature, and control current I 1 for the cooling fan based on the air conditioner blowout air demand temperature.
I 1 current determining means for determining the control current I 0 , comparison means for comparing the control current I 0 and the control current I 1, and the output current I to the cooling fan when the refrigerant pressure is lower than a predetermined value.
0, and cooling fan control unit refrigerant pressure with an output current determining means for either larger the output current I to the cooling fan and the control current I 1 and the control current I 0 at the time of a predetermined value or more. (2) In the I 1 current determining means, the control current I 1 is increased as the air conditioner blowout air required temperature is lower.
The cooling fan control device described.
【０００５】上記（１）の装置では、冷却水温と冷媒圧
力状態の他に空調装置吹出風要求温度にも基づいて冷却
ファンへ出力される制御電流Ｉが制御されるので、エア
コン負荷に応じてファン回転数を制御でき、したがって
必要な時に必要とされるだけの冷却を行うことができ
る。上記（２）の装置では、空調装置吹出風要求温度が
低温時ほど制御電流Ｉ1 を高くしたので、過冷の防止、
冷却応答性の向上をはかることができる。たとえば、車
室内が十分冷えている時でも従来は一定の制御電流が出
力され無駄な過冷が行われたが、本発明では車室内が十
分冷えている時には空調装置吹出風要求温度は高くなる
ので制御電流Ｉ1 は小さくなり、冷し過ぎが防止され、
かつ高回転されないことによる騒音抑制もはかられる。
また、逆に車室内の温度が高い時でも従来は一定の制御
電流のため冷却能力が不足して冷却応答性が悪いが、本
発明では車室内の温度が高い時には空調装置吹出風要求
温度は低くなるので制御電流Ｉ 1 は大きくなり、冷却能
力が上げられて応答性がよくなる。In the device (1), the cooling water temperature and the refrigerant pressure are
Cooling based not only on the power condition, but also on the temperature demanded by the air conditioner
Since the control current I output to the fan is controlled, the air
The fan speed can be controlled according to the control load, therefore
You can get as much cooling as you need, when you need it
You. In the device of (2) above, the air conditioner blowing air required temperature is
Control current I at lower temperatures1Since it was raised, the prevention of overcooling,
The cooling response can be improved. For example, a car
Conventionally, a constant control current is output even when the room is sufficiently cold.
However, in the present invention, the interior of the vehicle is not enough.
When the air is cooled, the air conditioner blowout air required temperature becomes high.
So the control current I1Becomes smaller, prevents overcooling,
Moreover, noise can be suppressed by not rotating at high speed.
On the contrary, even when the temperature inside the vehicle is high, the conventional control is constant.
Due to the current, the cooling capacity is insufficient and the cooling response is poor.
According to the invention, when the temperature in the passenger compartment is high, the air conditioner blowout air demand is required.
Since the temperature becomes low, the control current I 1Becomes larger, cooling capacity
Power is increased and responsiveness is improved.
【０００６】[0006]
【発明の実施の形態】本発明の一実施例の冷却ファン制
御装置を図面を参照して説明する。図１は、空調装置
（エアコン）、それを冷却する冷却ファンとその駆動装
置、冷却ファンの制御装置、を示している。空調装置
は、車室内エアを冷房して自身は蒸発するエバポレータ
１、蒸発した冷媒を冷却して液化するコンデンサー２、
液化した冷媒を圧縮してエバポレータ１に送るコンプレ
ッサー３、を有する。コンデンサー２はエアコン用ラジ
エーター４のすぐ後方に配置される。冷却ファンとその
駆動装置は、ラジエーター４に風を送る冷却ファン５
と、冷却ファン５を駆動する油圧モーター６と、油圧モ
ーター６に油圧回路７を介して接続された油圧ポンプ８
と、油圧ポンプ８を回転駆動するエンジン９と、油圧モ
ーター６に送られるオイルの量を制御する流量制御弁
（デューティ制御電磁弁）１０と、オイルのリザーブタ
ンク１１と、を有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cooling fan control device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an air conditioner (air conditioner), a cooling fan for cooling the air conditioner, a drive device for the cooling fan, and a controller for the cooling fan. The air conditioner cools the air inside the vehicle compartment to evaporate itself, the condenser 2 that cools and liquefies the evaporated refrigerant,
It has a compressor 3 that compresses the liquefied refrigerant and sends it to the evaporator 1. The condenser 2 is arranged immediately behind the air conditioner radiator 4. The cooling fan and its drive device include a cooling fan 5 that sends air to the radiator 4.
And a hydraulic motor 6 for driving the cooling fan 5, and a hydraulic pump 8 connected to the hydraulic motor 6 via a hydraulic circuit 7.
An engine 9 that rotationally drives the hydraulic pump 8, a flow rate control valve (duty control solenoid valve) 10 that controls the amount of oil sent to the hydraulic motor 6, and an oil reserve tank 11.
【０００７】冷却ファンの制御装置は、ラジエーター４
に設けられた冷却水温検出手段としての水温センサー１
２と、コンプレッサー３の出口配管に設けられた冷媒圧
力状態検出手段（冷媒圧力が所定値以上か所定値より低
いかの圧力状態を検出する手段）としての冷媒圧力スイ
ッチ１３と、それらが入力されかつ流量制御弁１０に制
御電流Ｉを出力するファンＥＣＵ１４（ＥＣＵはエレク
トロコントロールユニットの略で電子制御装置の意味）
と、を有する。ここで、制御電流Ｉと、それによって流
量制御される流量制御弁１０により回転数制御される冷
却ファン５の回転数との間には、図３に示す如く線形の
関係が設定されている。また、冷媒圧力スイッチ１３の
オン、オフ信号とエアコン冷媒圧との関には、ハンチン
グ防止のために、図４に示す如きヒステリシスの関係が
持たされている。The control device for the cooling fan is a radiator 4
Water temperature sensor 1 as cooling water temperature detecting means provided in
2, a refrigerant pressure switch 13 as a refrigerant pressure state detecting means (means for detecting a pressure state of the refrigerant pressure above or below a predetermined value) provided in the outlet pipe of the compressor 3, and these are input. A fan ECU 14 that outputs a control current I to the flow control valve 10 (ECU is an abbreviation for an electronic control unit and means an electronic control unit)
And. Here, a linear relationship is set between the control current I and the rotational speed of the cooling fan 5 whose rotational speed is controlled by the flow rate control valve 10 whose flow rate is controlled by the control current I as shown in FIG. Further, the relationship between the ON / OFF signals of the refrigerant pressure switch 13 and the air conditioner refrigerant pressure has a hysteresis relationship as shown in FIG. 4 in order to prevent hunting.
【０００８】本発明実施例では、図１に示すように、冷
却ファンの制御装置では、さらに、ファンＥＣＵ１４に
エアコン制御用ＥＣＵ１５から冷却風（エアコン吹出
風）要求温度がファンＥＣＵ１４に出力されるようにな
っている。エアコン制御用ＥＣＵ１５には日射センサー
１６、温度設定スイッチ１７、車室内温度センサー１８
の出力値が入力され、それらに基づいてエアコン制御用
ＥＣＵ１５は冷却風要求温度ｔを演算し、それに基づい
て空調装置を制御する他、冷却風要求温度ｔをファンＥ
ＣＵ１４に出力する。従来は、エアコン制御用ＥＣＵ１
５は冷却風要求温度をファンＥＣＵ１４に出力しない。In the embodiment of the present invention, as shown in FIG. 1, in the cooling fan control device, the air conditioner control ECU 15 outputs the cooling air (air conditioner blowing air) required temperature to the fan ECU 14. It has become. The ECU 15 for controlling the air conditioner includes a solar radiation sensor 16, a temperature setting switch 17, and a passenger compartment temperature sensor 18.
The air conditioner control ECU 15 calculates a cooling air required temperature t on the basis of the output values, and controls the air conditioner based on the calculated output value.
Output to CU14. Conventionally, the ECU 1 for controlling the air conditioner
5 does not output the required cooling air temperature to the fan ECU 14.
【０００９】ファンＥＣＵ１４には、図２に示す制御ル
ーチンを実行する手段がそのＲＯＭまたはＲＡＭにイン
ストールされている。図２に示すように、ファンＥＣＵ
１４は、冷却水温に基づき冷却ファンの制御電流Ｉ0 を
決定するＩ0 電流決定手段１０１と、空調装置吹出風要
求温度に基づき冷却ファンの制御電流Ｉ1 を決定するＩ
1 電流決定手段１０４（図５のマップを含む）と、制御
電流Ｉ0 と制御電流Ｉ 1 とを比較する比較手段１０５
（手段１０６を共用してもよい）と、冷媒圧力が所定値
より低い時には冷却ファンへの出力電流Ｉを前記制御電
流Ｉ0 とし、冷媒圧力が所定値以上の時には冷却ファン
への出力電流Ｉを制御電流Ｉ1 と制御電流Ｉ0 との何れ
か大きい方とする出力電流決定手段１０２、１０６、１
０７、１０８と、を有する。上記のように、冷却ファン
へ出力電流Ｉの決定のパラメータに、水温、冷媒圧力状
態の他に冷却風要求温度ｔが含まれている（これに対
し、従来は水温と冷媒圧力状態のみ）。The fan ECU 14 has a control routine shown in FIG.
Means for executing the routine is installed in its ROM or RAM.
It has been stalled. As shown in FIG. 2, the fan ECU
14 is a cooling fan control current I based on the cooling water temperature.0To
I to decide0Current determination means 101 and air conditioner blowout required
Control current I of the cooling fan based on the calculated temperature1I to decide
1Current determining means 104 (including the map of FIG. 5) and control
Current I0And control current I 1Comparing means 105 for comparing with
(The means 106 may be shared) and the refrigerant pressure is a predetermined value.
When it is lower, the output current I to the cooling fan is set to the control voltage.
Style I0When the refrigerant pressure is higher than a specified value, the cooling fan
Output current I to control current I1And control current I0And which
Or the output current determining means 102, 106, 1
07 and 108. As mentioned above, cooling fan
The output temperature I is determined by parameters such as water temperature and refrigerant pressure.
In addition to the state, the cooling air required temperature t is included (
However, conventionally, only the water temperature and refrigerant pressure state).
【００１０】Ｉ1 電流決定手段１０４は、ステップ１０
３で読み込まれたエアコン制御用ＥＣＵ１５からの冷却
風要求温度に基づいて図５のマップを用いて制御電流Ｉ
1 を決定する。図５のマップでは、冷却風要求温度ｔ
（エアコン吹出風要求温度）が低い程制御電流Ｉ1 が大
になるように、冷却風要求温度（エアコン吹出風要求温
度）と制御電流Ｉ1 との関係が定められている。これに
対し、従来は、図５において点線で示すように、冷却風
要求温度が変化しても、制御電流Ｉ1 は一定であった。
図６は、出力電流決定手段１０２、１０６、１０７、１
０８により決定される、冷却ファンへの出力電流Ｉとエ
ンジン入口水温Ｔとの関係を示している。すなわち、冷
媒圧力スイッチ１３がオフ（冷媒圧が所定値以下）の時
は図６の実線で示すようになり（冷却ファンへの出力電
流Ｉがエンジン入口水温Ｔによって決定される制御電流
Ｉ0 とされる）、冷媒圧力スイッチ１３がオン（冷媒圧
が所定値より大）の時は図６の点線で示すようになる
（冷却ファンへの出力電流Ｉがエンジン入口水温Ｔによ
って決定される制御電流Ｉ0 とエアコン吹出風要求温度
ｔに基づいて決まる制御電流Ｉ1 との何れか大きい方と
される）。ただし、図６の制御電流Ｉ1 は図５に示すよ
うにエアコン吹出風温度ｔによって変化する可変値であ
る（従来は、一定値）。The I 1 current determining means 104 executes step 10
Based on the required cooling air temperature from the ECU 15 for controlling the air conditioner read in step 3, the control current I
Decide on 1 . In the map of FIG. 5, the cooling air required temperature t
As higher the control current I 1 (air conditioning air blown required temperature) is low becomes larger, the relationship of the cooling air required temperature (the air conditioner outlet air required temperature) and the control current I 1 is defined. On the other hand, conventionally, as shown by the dotted line in FIG. 5, the control current I 1 is constant even if the cooling air required temperature changes.
FIG. 6 shows output current determining means 102, 106, 107, 1
8 shows the relationship between the output current I to the cooling fan and the engine inlet water temperature T determined by 08. That is, the refrigerant pressure switch 13 (the refrigerant pressure below a predetermined value) is turned off and the control current I 0 of the output current I is determined by the engine inlet water temperature T to become as indicated by the solid line in FIG. 6 (a cooling fan when the When the refrigerant pressure switch 13 is on (the refrigerant pressure is higher than a predetermined value), it becomes as shown by the dotted line in FIG. 6 (the output current I to the cooling fan is a control current determined by the engine inlet water temperature T). I 0 or the control current I 1 determined based on the air conditioner blowout air required temperature t, whichever is larger). However, the control current I 1 in FIG. 6 is a variable value that changes depending on the air conditioner blown air temperature t as shown in FIG. 5 (conventionally, a constant value).
【００１１】つぎに、作用を説明する。図２の制御ルー
チンは一定時間間隔毎に割り込まれる。ステップ１０１
において、水温により決まる制御電流Ｉ0 （図６の実
線）を求める。ついで、ステップ１０２において、冷媒
圧力スイッチ１３がオン状態にあるか否かを判定する。
冷媒圧力スイッチ１３がオフ状態にあればステップ１０
８に進み冷却ファンへの出力電流Ｉを水温により決まる
制御電流Ｉ0 とする。冷媒圧力スイッチ１３がオン状態
にあればステップ１０３に進み、エアコン制御用ＥＣＵ
１５によって演算されたエアコン吹出風要求温度ｔを読
込み、ついでステップ１０４に進み図５のマップを用い
てエアコン吹出風要求温度ｔに基づいて決定される制御
電流Ｉ1 を求める。ついで、ステップ１０５に進みＩ1
とＩ0とを比較する。ついで、ステップ１０６、１０
７、１０８によりＩ1 とＩ0 との何れか大きい方を冷却
ファンへの出力電流Ｉとする。かくして決定された出力
電流Ｉを、ステップ１０９で流量制御弁１０に出力して
ファン回転数を制御する。ついでエンドステップに進
み、そのサイクルを終了する。つぎに、再び図２のルー
チンに割り込み上記サイクルを実行することを繰り返
す。Next, the operation will be described. The control routine of FIG. 2 is interrupted at regular time intervals. Step 101
At, the control current I 0 (solid line in FIG. 6) determined by the water temperature is obtained. Next, at step 102, it is judged if the refrigerant pressure switch 13 is in the ON state.
If the refrigerant pressure switch 13 is off, step 10
8, the output current I to the cooling fan is set as the control current I 0 determined by the water temperature. If the refrigerant pressure switch 13 is on, the routine proceeds to step 103, where the air conditioner control ECU
The air conditioner blowing air required temperature t calculated by 15 is read, and then the process proceeds to step 104 to obtain the control current I 1 determined based on the air conditioner blowing air required temperature t using the map of FIG. Then, proceed to step 105, I 1
And I 0 are compared. Then, steps 106 and 10
7 and 108, the larger one of I 1 and I 0 is set as the output current I to the cooling fan. The output current I thus determined is output to the flow control valve 10 in step 109 to control the fan rotation speed. Then go to the end step and finish the cycle. Then, the routine of FIG. 2 is interrupted again and the above cycle is repeated.
【００１２】上記のようにＩ1 とＩ0 との何れか大きい
方を冷却ファンへの出力電流Ｉとすることにより、エア
コン負荷に応じた適切なファン回転数で冷却ファン５を
駆動させることができ、必要な時に必要とされるだけの
冷房を実行できる。たとえば、図２のステップ１０７を
通る運転をしている時、車室内の温度が十分に低くて強
力な冷房をする必要がないとき（エアコン吹出風要求温
度が高い時で、図２の点線より下の実線の領域）には図
２において制御電流Ｉ1 が従来（点線）より小になり、
出力電流が小となり、かつ図７に示すように冷却ファン
回転数Ｎｆが小となり、無駄な冷房をしなくて済む。こ
れに対し、従来の制御電流Ｉ 1 のものは、Ｉ1 がエアコ
ン吹出風要求温度に応じて小にならないので、冷媒圧力
スイッチオン時に強力な冷却となり、図８に示すような
ハンチングを生じやすい。逆に、車室内の温度が高く強
力でかつ急速冷却が必要な時（図２の点線より上にある
実線の領域）、従来（点線）では冷却能力が低すぎ冷却
応答性が悪いが、本発明では制御電流Ｉ1 が大きくされ
るので、急速冷却が行われ、冷房応答性が改善される。As stated above, I1And I0Whichever is greater
One is the output current I to the cooling fan,
Cooling fan 5 at an appropriate fan speed according to the load
Can be driven and only needed when needed
Can perform cooling. For example, step 107 of FIG.
When driving through, the temperature in the passenger compartment is sufficiently low
When there is no need for powerful cooling (air conditioner blown air required temperature
When the degree is high, the area in the solid line below the dotted line in Figure 2)
Control current I at 21Is smaller than before (dotted line),
Output current is small, and as shown in Fig. 7, cooling fan
The rotation speed Nf becomes small, and unnecessary cooling is not required. This
In contrast, the conventional control current I 1The thing is I1Is Airco
The refrigerant pressure does not decrease depending on the required temperature, so the refrigerant pressure
When the switch is turned on, the cooling becomes strong, as shown in Fig. 8.
Hunting is likely to occur. On the contrary, the temperature inside the vehicle is high
When force and rapid cooling are needed (above the dotted line in Figure 2)
The solid line area) and the conventional (dotted line) cooling capacity is too low.
Although the response is poor, in the present invention, the control current I1Is made larger
Therefore, rapid cooling is performed and the cooling response is improved.
【００１３】また、外気温が高くない時のアイドル放置
では、従来制御の場合、冷媒圧力スイッチ１３がオン状
態の時、水温に関係なく高すぎる一定電流の出力電流を
流量制御弁に流すので、図８に示すようなハンチングが
生じるおそれがあり、ファン騒音の面で音圧レベル、騒
音レベル変動上問題となる。しかし、本発明の場合、外
気温が高くない時のアイドル放置では、冷媒圧力スイッ
チ１３がオン状態の時、制御電流Ｉ1 が低くなるので、
図７に示すように、ファン回転数を低くできかつハンチ
ングが生じなくなり、ファン騒音の面で音圧レベル、騒
音レベル変動を改善できる。In the conventional control, when the refrigerant pressure switch 13 is in the ON state when the outside temperature is not high and the refrigerant pressure switch 13 is in the ON state, an excessively high constant current output current is supplied to the flow control valve. Hunting as shown in FIG. 8 may occur, which causes a problem in terms of fan noise in terms of fluctuations in sound pressure level and noise level. However, in the case of the present invention, the control current I 1 becomes low when the refrigerant pressure switch 13 is in the ON state when left idle when the outside air temperature is not high.
As shown in FIG. 7, it is possible to reduce the fan rotation speed and prevent hunting, and it is possible to improve the sound pressure level and noise level fluctuation in terms of fan noise.
【００１４】[0014]
【発明の効果】請求項１の装置によれば、Ｉ1 電流決定
手段および出力電流決定手段を設けたので、冷却水温と
冷媒圧力状態の他に空調装置吹出風要求温度にも基づい
て冷却ファンへ出力される制御電流Ｉが制御される。そ
の結果、エアコン負荷に応じた冷却ファン回転数制御が
可能になる。請求項２の装置によれば、空調装置吹出風
要求温度が低温時ほど制御電流Ｉ1を高くしたので、無
駄な過冷の防止、強力冷房の必要な時の冷房応答性の向
上をはかることができる。According to the first aspect of the present invention, since the I 1 current determining means and the output current determining means are provided, the cooling fan is based on the cooling air temperature and the refrigerant pressure state as well as the air conditioner blowout air required temperature. The control current I output to is controlled. As a result, it becomes possible to control the cooling fan speed according to the load of the air conditioner. According to the apparatus of claim 2, since the control current I 1 is increased as the air conditioner blowout air required temperature is lower, it is possible to prevent unnecessary overcooling and improve the cooling response when strong cooling is required. You can
【図１】本発明の一実施例の冷却ファン制御装置、およ
びそれが設けられるエアコン装置、冷却ファン装置の系
統図である。FIG. 1 is a system diagram of a cooling fan control device, an air conditioner device and a cooling fan device provided with the cooling fan control device according to an embodiment of the present invention.
【図２】図１の冷却ファン制御装置のファンＥＣＵの制
御ルーチンのフローチャートである。FIG. 2 is a flowchart of a control routine of a fan ECU of the cooling fan control device of FIG.
【図３】図１の装置における冷却ファン回転数と出力電
流との関係を示すグラフである。3 is a graph showing a relationship between a cooling fan rotation speed and an output current in the apparatus of FIG.
【図４】冷媒圧力スイッチの作動信号と冷媒圧力との関
係を示す図である。FIG. 4 is a diagram showing a relationship between an operation signal of a refrigerant pressure switch and a refrigerant pressure.
【図５】図１の装置における制御電流Ｉ1 とエアコン吹
出風要求温度との関係を示すグラフである。5 is a graph showing the relationship between the control current I 1 and the air conditioner blowout air required temperature in the apparatus of FIG.
【図６】図１の装置における流量制御弁への出力電流Ｉ
とエンジン入口水温との関係を示すグラフである。6 is an output current I to the flow control valve in the apparatus of FIG.
5 is a graph showing a relationship between the engine inlet water temperature and the engine inlet water temperature.
【図７】図１の装置における冷却ファン回転数、エアコ
ン冷媒圧力と時間との関係を示すグラフである。7 is a graph showing a relationship between a cooling fan rotation speed, an air conditioner refrigerant pressure, and time in the apparatus of FIG.
【図８】従来制御における冷却ファン回転数、エアコン
冷媒圧力と時間との関係を示すグラフである。FIG. 8 is a graph showing the relationship between cooling fan rotation speed, air conditioner refrigerant pressure, and time in conventional control.
５ 冷却ファン ６ 油圧モータ ８ 油圧ポンプ １０ 流量制御弁 １２ 水温センサー １３ 冷媒圧力スイッチ １４ ファンＥＣＵ １５ エアコン制御用ＥＣＵ 5 Cooling Fan 6 Hydraulic Motor 8 Hydraulic Pump 10 Flow Control Valve 12 Water Temperature Sensor 13 Refrigerant Pressure Switch 14 Fan ECU 15 Air Conditioner Control ECU
Claims (2)
ファンの回転数を制御する冷却ファン制御装置であっ
て、冷却水温を検出する水温検出手段と、冷媒圧力状態
を検出する冷媒圧力状態検出手段と、冷却水温に基づき
冷却ファンの制御電流Ｉ0 を決定するＩ0 電流決定手段
と、空調装置吹出風要求温度に基づき冷却ファンの制御
電流Ｉ1 を決定するＩ1 電流決定手段と、制御電流Ｉ0
と制御電流Ｉ1 とを比較する比較手段と、冷媒圧力が所
定値より低い時には冷却ファンへの出力電流Ｉを前記制
御電流Ｉ0 とし冷媒圧力が所定値以上の時には冷却ファ
ンへの出力電流Ｉを前記制御電流Ｉ1 と前記制御電流Ｉ
0 との何れか大きい方とする出力電流決定手段と、を有
する冷却ファン制御装置。1. A cooling fan control device for controlling the number of revolutions of a cooling fan for sending cooling air to a heat exchange part of an air conditioner, the cooling water temperature detecting means for detecting a cooling water temperature, and the refrigerant pressure for detecting a refrigerant pressure state. State detection means, I 0 current determination means for determining the cooling fan control current I 0 based on the cooling water temperature, and I 1 current determination means for determining the cooling fan control current I 1 based on the air conditioner blowout air required temperature. , Control current I 0
And a control current I 1 for comparing the output current I to the cooling fan when the refrigerant pressure is lower than a predetermined value with the control current I 0 and an output current I to the cooling fan when the refrigerant pressure is higher than the predetermined value. The control current I 1 and the control current I
0 , whichever is larger, the output current determining means, and a cooling fan control device.
置吹出風要求温度が低温時ほど制御電流Ｉ1 を高くした
請求項１記載の冷却ファン制御装置。2. The cooling fan control device according to claim 1 , wherein in the I 1 current determining means, the control current I 1 is increased as the air conditioner blowout air required temperature is lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP896996A JPH09195767A (en) | 1996-01-23 | 1996-01-23 | Cooling fan control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP896996A JPH09195767A (en) | 1996-01-23 | 1996-01-23 | Cooling fan control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09195767A true JPH09195767A (en) | 1997-07-29 |
Family
ID=11707520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP896996A Pending JPH09195767A (en) | 1996-01-23 | 1996-01-23 | Cooling fan control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09195767A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0899105A2 (en) | 1997-07-22 | 1999-03-03 | Nec Corporation | Electrostatic ink jet recording head |
| KR100420354B1 (en) * | 2000-08-22 | 2004-03-02 | 주식회사 엘지이아이 | Method for controlling fan of airconditioner |
| KR100444439B1 (en) * | 2001-07-07 | 2004-08-16 | 현대자동차주식회사 | Method for cooling fan control of engine in vehicle |
| US9662958B2 (en) | 2014-05-14 | 2017-05-30 | Komatsu Ltd. | Work vehicle |
-
1996
- 1996-01-23 JP JP896996A patent/JPH09195767A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0899105A2 (en) | 1997-07-22 | 1999-03-03 | Nec Corporation | Electrostatic ink jet recording head |
| KR100420354B1 (en) * | 2000-08-22 | 2004-03-02 | 주식회사 엘지이아이 | Method for controlling fan of airconditioner |
| KR100444439B1 (en) * | 2001-07-07 | 2004-08-16 | 현대자동차주식회사 | Method for cooling fan control of engine in vehicle |
| US9662958B2 (en) | 2014-05-14 | 2017-05-30 | Komatsu Ltd. | Work vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6523361B2 (en) | Air conditioning systems | |
| US7347167B2 (en) | Method for controlling cooling fans | |
| JP4558060B2 (en) | Refrigeration cycle equipment | |
| US20060086113A1 (en) | Speed and system pressure control for cooling fan | |
| JP3237463B2 (en) | Air conditioning controller for electric vehicles | |
| JP2007139269A (en) | Supercritical refrigerating cycle | |
| JP2003326963A (en) | Vehicle air conditioning control device | |
| JP4669640B2 (en) | Air conditioner for vehicles | |
| JP2005206014A (en) | Control method and control device for refrigeration cycle of vehicular air conditioner | |
| JPH09195767A (en) | Cooling fan control device | |
| JP2003054250A (en) | Vehicular cooling fan control device | |
| JP4014760B2 (en) | Air conditioner for vehicles | |
| JP4082122B2 (en) | Vehicle control device | |
| JP4612968B2 (en) | Air conditioner for vehicles | |
| JPH08132861A (en) | Control method for air conditioner for automobile | |
| JP2000274276A (en) | Idle speed control device for engine | |
| JP2002096628A (en) | Air conditioner for vehicle | |
| JPH10166850A (en) | Vehicular air conditioner | |
| JPH10141107A (en) | Engine idle speed control device for vehicle | |
| JP3687500B2 (en) | Air conditioner for vehicles | |
| JP2006137270A (en) | Control device for vehicle | |
| JP3552910B2 (en) | Compressor control device for hybrid electric vehicle | |
| JP2003262124A (en) | Cooling-fan control device for engine | |
| JP2855478B2 (en) | Cooling and refrigeration cycle capacity control device | |
| JP3201055B2 (en) | Vehicle with air conditioner |