WO2013146169A1 - System for operating cooling fan in internal combustion engine - Google Patents
System for operating cooling fan in internal combustion engine Download PDFInfo
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- WO2013146169A1 WO2013146169A1 PCT/JP2013/056305 JP2013056305W WO2013146169A1 WO 2013146169 A1 WO2013146169 A1 WO 2013146169A1 JP 2013056305 W JP2013056305 W JP 2013056305W WO 2013146169 A1 WO2013146169 A1 WO 2013146169A1
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- cooling fan
- internal combustion
- combustion engine
- fluid coupling
- control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/042—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using fluid couplings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
- F16D35/02—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with rotary working chambers and rotary reservoirs, e.g. in one coupling part
- F16D35/027—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with rotary working chambers and rotary reservoirs, e.g. in one coupling part actuated by emptying and filling with viscous fluid from outside the coupling during operation
Definitions
- the present invention relates to a cooling fan operating system for an internal combustion engine, and more particularly, to a cooling fan operating system for an internal combustion engine that can prevent the cooling fan from being damaged even when rotation of the cooling fan is directly impeded. .
- a normal internal combustion engine is provided with a cooling device in order to keep the temperature of component parts appropriate.
- a cooling device for an engine mounted on a vehicle cools cooling water that has passed through a water jacket formed in a cylinder block and has become hot using a vehicle speed wind in a radiator disposed at the front of the vehicle.
- a cooling fan is installed at the rear of the radiator so that it can be cooled even when the vehicle is stopped, for example, where high-speed wind cannot be expected.
- the cooling fan uses an engine or an electric motor as a rotational power source, and the rotational speed is normally controlled based on the temperature of the cooling water.
- the rotational speed is normally controlled based on the temperature of the cooling water.
- the torque transmission rate of a fluid coupling that transmits rotational power to a cooling fan can be increased or decreased.
- the number of rotations of the cooling fan is controlled.
- the electric motor is used as a rotational power source, the number of rotations of the cooling fan is controlled by increasing or decreasing the voltage applied to the electric motor.
- An object of the present invention is to provide a cooling fan operating system for an internal combustion engine that can prevent the cooling fan from being damaged even when the rotation of the cooling fan is directly hindered.
- the cooling fan operating system for an internal combustion engine includes a cooling fan installed behind a radiator through which cooling water of the internal combustion engine circulates, a rotational power source that drives the cooling fan, and the cooling
- a cooling fan operating system for an internal combustion engine comprising control means for controlling the number of revolutions of the cooling fan based on the temperature of water, the cooling fan and the rotational power source are connected to the control means. Is provided with a manual switch for switching to a slipperable state.
- the rotational power source is an internal combustion engine to which rotational power is transmitted through a fluid coupling
- the control means is a slip ratio that controls the slip ratio of the fluid coupling based on the temperature of the cooling water.
- the slip ratio control means comprises an oil pump that supplies oil to the fluid coupling, a water temperature sensor that detects the temperature of the cooling water, and a control device that controls the oil pump based on the signal of the water temperature sensor,
- the manual switch is composed of an electric switch that is electrically connected to the control device, and the control device is configured so that when the manual switch is turned on, the oil pump is connected to the fluid coupling so that the slip ratio of the fluid coupling becomes the maximum slip ratio. Supply or discharge.
- the rotation power source is an electric motor directly connected to the cooling fan
- the control means is a rotation speed control means for controlling the electric motor based on the temperature of the cooling water.
- the rotation speed control means includes a voltage regulator that adjusts the voltage applied to the electric motor, a water temperature sensor that detects the temperature of the cooling water, and a control device that controls the voltage regulator based on a signal from the water temperature sensor.
- the manual switch is electrically connected to the control device. When the manual switch is turned on, the control device reduces the voltage applied to the electric motor to zero.
- the connection between the cooling fan and the rotational power source can be slipped so that the cooling fan can freely rotate. Since the state can be switched to the state in advance, the cooling fan can be prevented from being damaged.
- FIG. 1 is a block diagram showing a cooling fan operating system for an internal combustion engine according to a first embodiment of the present invention.
- FIG. 2 is a structural diagram showing the structure of the fluid coupling.
- FIG. 3 is a block diagram showing a cooling fan operation system for an internal combustion engine according to the second embodiment of the present invention.
- FIG. 1 shows a cooling fan operation system for an internal combustion engine according to the first embodiment of the present invention.
- the cylinder block 2 of the engine 1 mounted on the vehicle is formed with four cylinders 5 in which pistons 4 connected to the crankshaft 3 are slidably installed.
- the linear reciprocating motion of the piston 4 due to the combustion pressure of the fuel in these cylinders is converted into the rotational motion of the crankshaft 3 and becomes the power source of the engine 1.
- a water jacket 7 through which the cooling water 6 flows is formed in the cylinder block 2 around the cylinder 5.
- the cooling water 6 is forcibly circulated by a water pump (not shown) in a sealed pipe line composed of a water jacket 7 and a radiator 8 outside the engine 1.
- a cooling fan 9 is installed immediately after the radiator 8.
- the cooling fan 9 is transmitted via a fan belt 14 wound between a coupling pulley 12 connected to a fluid coupling 11 directly connected to the rotary shaft 10 and a crankshaft pulley 13 attached to the crankshaft 3. Driven by the rotational power of the engine 1 to be driven.
- the fluid coupling 11 is supplied between the torque transmission surfaces 15 a and 16 a of the input side plate 15 connected to the coupling pulley 12 and the output side plate 16 directly connected to the rotating shaft 10 of the cooling fan 9.
- the rotational power of the engine 1 is transmitted to the cooling fan 9 by utilizing the shear resistance of the oil thus produced.
- This oil passes through an oil pump 19 provided in an oil supply pipe 18 extending from the oil tank 17, a water temperature sensor 20 that detects the temperature of the cooling water 6, and a signal line (indicated by a one-dot chain line) from the water temperature sensor 20. It is supplied by a slip ratio control means comprising a first control device 21 that controls the oil pump 19 based on a signal transmitted.
- the first control device 21 When the water temperature sensor 20 detects that the temperature of the cooling water 6 is high, the first control device 21 operates the oil pump 19 to increase the amount of oil supplied to the fluid coupling 11, and between the torque transmission surfaces 15a and 16a. The slip rate of the cooling fan 9 is decreased and the number of revolutions of the cooling fan 9 is increased. On the other hand, when it is detected that the temperature of the cooling water 6 is low, the amount of oil supplied to the fluid coupling 11 is decreased, the slip ratio is increased, and the rotational speed of the cooling fan 9 is decreased.
- the first control device 21 is electrically connected to a first manual switch 22 composed of an electric switch that can be manually operated.
- a first manual switch 22 composed of an electric switch that can be manually operated.
- the first control device 21 supplies oil to the fluid coupling 11 so that the slip ratio of the fluid coupling 11 becomes the maximum slip ratio at which the rotation speed of the cooling fan 9 is minimized.
- the first control device 21 operates the oil pump 19 so as to discharge oil from the fluid coupling 11.
- FIG. 3 shows a cooling fan operation system for an internal combustion engine according to the second embodiment of the present invention.
- the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
- the rotating shaft 10 of the cooling fan 9 is directly connected to the electric motor 24 using the in-vehicle battery 23 as a power source, and is directly driven by the rotational power.
- the number of rotations of the cooling fan 9 is as follows: a voltage regulator 26 provided on a conducting wire 25 connecting the in-vehicle battery 23 and the electric motor 24; a water temperature sensor 20 that detects the temperature of the cooling water 6; The second controller 27 that controls the voltage regulator 26 based on the signal is controlled by a rotation speed control means.
- the second control device 27 increases the voltage applied to the electric motor 24 to increase the rotation speed of the cooling fan 9.
- the voltage applied to the electric motor 24 is lowered to reduce the rotational speed of the cooling fan 9.
- the second control device 27 is electrically connected to a second manual switch 28 made of an electric switch that can be manually operated.
- the second manual switch 28 When the second manual switch 28 is turned on, the second control device 27 operates the voltage regulator 26 so that the voltage applied to the electric motor 24 is reduced to zero. When the applied voltage becomes zero, no rotational power is generated in the electric motor 24, so that the rotating shaft 10 of the cooling fan 9 becomes free.
- cooling fan operating system for an internal combustion engine of the present invention can be applied not only to automobile gasoline engines and diesel engines, but also to construction machinery and marine engines.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
A first manual switch (22) is electrically connected to a first controller (21) for controlling an oil pump (19) for supplying oil to a fluid coupling (11) on the basis of a signal from a water-temperature sensor (20) for sensing the temperature of cooling water (6). The fluid coupling (11) transmits the rotational force of a crankshaft (3) of an engine (1) to a rotating shaft (10) of a cooling fan (9). When the first manual switch (22) is in the ON position, the first controller (21) actuates the oil pump (19) so that the slippage of the fluid coupling (11) is switched to the maximum slippage at which the number of revolutions made by the cooling fan (9) is at a minimum.
Description
本発明は、内燃機関の冷却ファン操作システムに関し、更に詳しくは、冷却ファンの回転が直に妨げられることになる場合でも、冷却ファンの破損を防止することができる内燃機関の冷却ファン操作システムに関する。
The present invention relates to a cooling fan operating system for an internal combustion engine, and more particularly, to a cooling fan operating system for an internal combustion engine that can prevent the cooling fan from being damaged even when rotation of the cooling fan is directly impeded. .
通常の内燃機関には、構成部品の温度を適性に保つために冷却装置が設けられている。車両に搭載されたエンジンの冷却装置は、シリンダブロックに形成されたウォータジャケット内を通過して高熱になった冷却水を、車両の前部に配置されたラジエータにおいて車速風を利用して冷却するものであるが、車速風が期待できない停車中などにも冷却できるように、ラジエータの後方に冷却ファンが設置されている。
A normal internal combustion engine is provided with a cooling device in order to keep the temperature of component parts appropriate. A cooling device for an engine mounted on a vehicle cools cooling water that has passed through a water jacket formed in a cylinder block and has become hot using a vehicle speed wind in a radiator disposed at the front of the vehicle. However, a cooling fan is installed at the rear of the radiator so that it can be cooled even when the vehicle is stopped, for example, where high-speed wind cannot be expected.
冷却ファンは、エンジン又は電動モータを回転動力源としており、通常は冷却水の温度に基づいて回転数が制御されるようになっている。例えば、日本出願の特開平１０－３０６５５号公報に記載されているように、エンジンを回転動力源とする場合には、冷却ファンに回転動力を伝達する流体継手のトルク伝達率を増減させることで、冷却ファンの回転数を制御している。また、電動モータを回転動力源とする場合には、電動モータに印加する電圧を上下させることで、冷却ファンの回転数を制御している。
The cooling fan uses an engine or an electric motor as a rotational power source, and the rotational speed is normally controlled based on the temperature of the cooling water. For example, as described in Japanese Patent Application Laid-Open No. 10-30655, when an engine is used as a rotational power source, the torque transmission rate of a fluid coupling that transmits rotational power to a cooling fan can be increased or decreased. , The number of rotations of the cooling fan is controlled. When the electric motor is used as a rotational power source, the number of rotations of the cooling fan is controlled by increasing or decreasing the voltage applied to the electric motor.
このようなエンジンの冷却装置においては、車両が特殊な運行状況になる場合、例えば河川を渡渉するときなどに、水面などの異物が冷却ファンに直に接触して回転が妨げられると、冷却ファンが破損するおそれがある。
In such an engine cooling device, when a vehicle is in a special driving situation, for example, when crossing a river, when a foreign object such as a water surface comes into direct contact with the cooling fan to prevent rotation, the cooling fan May be damaged.
本発明の目的は、冷却ファンの回転が直に妨げられることになる場合でも、冷却ファンの破損を防止することができる内燃機関の冷却ファン操作システムを提供することにある。
An object of the present invention is to provide a cooling fan operating system for an internal combustion engine that can prevent the cooling fan from being damaged even when the rotation of the cooling fan is directly hindered.
上記の目的を達成する本発明の内燃機関の冷却ファン操作システムは、内燃機関の冷却水が循環するラジエータの後方に設置された冷却ファンと、前記冷却ファンを駆動する回転動力源と、前記冷却水の温度に基づいて前記冷却ファンの回転数を制御する制御手段とを備えた内燃機関の冷却ファン操作システムにおいて、前記制御手段に、前記冷却ファンと前記回転動力源との接続を該冷却ファンがスリップ可能な状態へ切り替える手動スイッチを設けたことを特徴とするものである。
The cooling fan operating system for an internal combustion engine according to the present invention that achieves the above object includes a cooling fan installed behind a radiator through which cooling water of the internal combustion engine circulates, a rotational power source that drives the cooling fan, and the cooling In a cooling fan operating system for an internal combustion engine comprising control means for controlling the number of revolutions of the cooling fan based on the temperature of water, the cooling fan and the rotational power source are connected to the control means. Is provided with a manual switch for switching to a slipperable state.
上記の内燃機関の冷却ファン操作システムにおいては、回転動力源を流体継手を通じて回転動力が伝達される内燃機関とし、かつ制御手段を冷却水の温度に基づいて流体継手のスリップ率を制御するスリップ率制御手段として、手動スイッチはＯＮになると、流体継手のスリップ率を冷却ファンの回転数が最小となる最大スリップ率へ切り替える。
In the cooling fan operating system for an internal combustion engine described above, the rotational power source is an internal combustion engine to which rotational power is transmitted through a fluid coupling, and the control means is a slip ratio that controls the slip ratio of the fluid coupling based on the temperature of the cooling water. As a control means, when the manual switch is turned ON, the slip rate of the fluid coupling is switched to the maximum slip rate at which the rotation speed of the cooling fan is minimized.
そして、スリップ率制御手段を、流体継手にオイルを供給するオイルポンプと、冷却水の温度を検知する水温センサと、水温センサの信号に基づいてオイルポンプを制御する制御装置とから構成するとともに、手動スイッチを制御装置に電気的に接続する電気スイッチから構成し、その制御装置は、手動スイッチがＯＮになると、オイルポンプから流体継手に該流体継手のスリップ率が最大スリップ率になるようにオイルを供給又は排出する。
And the slip ratio control means comprises an oil pump that supplies oil to the fluid coupling, a water temperature sensor that detects the temperature of the cooling water, and a control device that controls the oil pump based on the signal of the water temperature sensor, The manual switch is composed of an electric switch that is electrically connected to the control device, and the control device is configured so that when the manual switch is turned on, the oil pump is connected to the fluid coupling so that the slip ratio of the fluid coupling becomes the maximum slip ratio. Supply or discharge.
あるいは、上記の内燃機関の冷却ファン操作システムにおいては、回転動力源を冷却ファンに直結する電動モータとし、かつ制御手段を冷却水の温度に基づいて電動モータを制御する回転数制御手段として、手動スイッチはＯＮになると、冷却ファンの回転数を０へ切り替える。
Alternatively, in the cooling fan operating system for the internal combustion engine described above, the rotation power source is an electric motor directly connected to the cooling fan, and the control means is a rotation speed control means for controlling the electric motor based on the temperature of the cooling water. When the switch is turned on, the number of rotations of the cooling fan is switched to zero.
そして、回転数制御手段を、電動モータに印加される電圧を調整する電圧調整器と、冷却水の温度を検知する水温センサと、水温センサの信号に基づいて電圧調整器を制御する制御装置とから構成するとともに、手動スイッチを制御装置に電気的に接続する電気スイッチから構成し、制御装置は、手動スイッチがＯＮになると、電動モータに印加される電圧を０にまで低下する。
The rotation speed control means includes a voltage regulator that adjusts the voltage applied to the electric motor, a water temperature sensor that detects the temperature of the cooling water, and a control device that controls the voltage regulator based on a signal from the water temperature sensor. And the manual switch is electrically connected to the control device. When the manual switch is turned on, the control device reduces the voltage applied to the electric motor to zero.
本発明の内燃機関の冷却ファン操作システムによれば、冷却ファンの回転が直に妨げられることになる場合でも、冷却ファンと回転動力源との接続を、冷却ファンが回転自在となるスリップ可能な状態に事前に切り替えることができるので、冷却ファンの破損を防止することができる。
According to the cooling fan operating system for an internal combustion engine of the present invention, even when the rotation of the cooling fan is directly impeded, the connection between the cooling fan and the rotational power source can be slipped so that the cooling fan can freely rotate. Since the state can be switched to the state in advance, the cooling fan can be prevented from being damaged.
以下に、本発明の実施の形態について、図面を参照して説明する。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図１は、本発明の第１実施形態からなる内燃機関の冷却ファン操作システムを示す。
FIG. 1 shows a cooling fan operation system for an internal combustion engine according to the first embodiment of the present invention.
車両に搭載されたエンジン１のシリンダブロック２には、クランクシャフト３に接続するピストン４が摺動可能に設置された４個の気筒５が形成されている。それらの気筒内での燃料の燃焼圧力によるピストン４の直線往復運動は、クランクシャフト３の回転運動に変換されてエンジン１の動力源になる。この燃料の燃焼によるシリンダブロック２の温度上昇を防止するために、気筒５の周囲のシリンダブロック２内には、内部を冷却水６が流れるウォータージャケット７が形成されている。冷却水６は、ウォータジャケット７とエンジン１外部のラジエータ８とからなる密閉管路内を、図示しないウォータポンプにより強制的に循環される。
The cylinder block 2 of the engine 1 mounted on the vehicle is formed with four cylinders 5 in which pistons 4 connected to the crankshaft 3 are slidably installed. The linear reciprocating motion of the piston 4 due to the combustion pressure of the fuel in these cylinders is converted into the rotational motion of the crankshaft 3 and becomes the power source of the engine 1. In order to prevent the temperature rise of the cylinder block 2 due to the combustion of the fuel, a water jacket 7 through which the cooling water 6 flows is formed in the cylinder block 2 around the cylinder 5. The cooling water 6 is forcibly circulated by a water pump (not shown) in a sealed pipe line composed of a water jacket 7 and a radiator 8 outside the engine 1.
ラジエータ８における冷却水６の放熱量を高めるために、ラジエータ８の直後には冷却ファン９が設置されている。この冷却ファン９は、その回転軸１０に直結する流体継手１１に接続する継手プーリ１２と、クランクシャフト３に取り付けられたクランクシャフトプーリ１３との間に巻回されたファンベルト１４を介して伝達されるエンジン１の回転動力により駆動される。
In order to increase the heat radiation amount of the cooling water 6 in the radiator 8, a cooling fan 9 is installed immediately after the radiator 8. The cooling fan 9 is transmitted via a fan belt 14 wound between a coupling pulley 12 connected to a fluid coupling 11 directly connected to the rotary shaft 10 and a crankshaft pulley 13 attached to the crankshaft 3. Driven by the rotational power of the engine 1 to be driven.
流体継手１１は、図２に示すように、継手プーリ１２に接続する入力側プレート１５と、冷却ファン９の回転軸１０に直結する出力側プレート１６とのトルク伝達面１５ａ、１６ａの間に供給されたオイルのせん断抵抗を利用して、エンジン１の回転動力を冷却ファン９に伝達するものである。このオイルは、オイルタンク１７から延びるオイル供給管１８に介設されたオイルポンプ１９と、冷却水６の温度を検知する水温センサ２０と、その水温センサ２０から信号線（一点鎖線で示す）を通じて電送される信号に基づいてオイルポンプ１９を制御する第１制御装置２１と、からなるスリップ率制御手段により供給される。
As shown in FIG. 2, the fluid coupling 11 is supplied between the torque transmission surfaces 15 a and 16 a of the input side plate 15 connected to the coupling pulley 12 and the output side plate 16 directly connected to the rotating shaft 10 of the cooling fan 9. The rotational power of the engine 1 is transmitted to the cooling fan 9 by utilizing the shear resistance of the oil thus produced. This oil passes through an oil pump 19 provided in an oil supply pipe 18 extending from the oil tank 17, a water temperature sensor 20 that detects the temperature of the cooling water 6, and a signal line (indicated by a one-dot chain line) from the water temperature sensor 20. It is supplied by a slip ratio control means comprising a first control device 21 that controls the oil pump 19 based on a signal transmitted.
第１制御装置２１は、水温センサ２０が冷却水６の温度が高いことを検知したときには、オイルポンプ１９を作動して流体継手１１に供給するオイル量を増加させ、トルク伝達面１５ａ、１６ａ間のスリップ率を低めて冷却ファン９の回転数を増加させる。一方で、冷却水６の温度が低いことを検知したときには、流体継手１１に供給するオイル量を減少させて、スリップ率を高めて冷却ファン９の回転数を減少させる。
When the water temperature sensor 20 detects that the temperature of the cooling water 6 is high, the first control device 21 operates the oil pump 19 to increase the amount of oil supplied to the fluid coupling 11, and between the torque transmission surfaces 15a and 16a. The slip rate of the cooling fan 9 is decreased and the number of revolutions of the cooling fan 9 is increased. On the other hand, when it is detected that the temperature of the cooling water 6 is low, the amount of oil supplied to the fluid coupling 11 is decreased, the slip ratio is increased, and the rotational speed of the cooling fan 9 is decreased.
この第１制御装置２１には、手動操作可能な電気スイッチからなる第１手動スイッチ２２が電気的に接続している。第１制御装置２１は、第１手動スイッチ２２がＯＮになると、流体継手１１のスリップ率が冷却ファン９の回転数が最小となる最大スリップ率になるように流体継手１１にオイルを供給する。あるいは、第１制御装置２１は、流体継手１１からオイルを排出するようにオイルポンプ１９を作動させる。
The first control device 21 is electrically connected to a first manual switch 22 composed of an electric switch that can be manually operated. When the first manual switch 22 is turned on, the first control device 21 supplies oil to the fluid coupling 11 so that the slip ratio of the fluid coupling 11 becomes the maximum slip ratio at which the rotation speed of the cooling fan 9 is minimized. Alternatively, the first control device 21 operates the oil pump 19 so as to discharge oil from the fluid coupling 11.
このように構成することで、冷却ファン９の回転が直に妨げられることになる場合でも、冷却ファン９の回転数を、流体継手１１がスリップ可能な最小回転数まで前もって強制的に低下させて、冷却ファン９が回転自在になるので、冷却ファン９の破損を防止することができる。
With this configuration, even if the rotation of the cooling fan 9 is directly hindered, the number of rotations of the cooling fan 9 is forcibly reduced to the minimum number of rotations that the fluid coupling 11 can slip in advance. Since the cooling fan 9 becomes rotatable, the cooling fan 9 can be prevented from being damaged.
図３は、本発明の第２実施形態からなる内燃機関の冷却ファン操作システムを示す。なお、図１と同じ構成要素には同一の符号を付し、説明を省略する。
FIG. 3 shows a cooling fan operation system for an internal combustion engine according to the second embodiment of the present invention. The same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
この実施形態においては、冷却ファン９の回転軸１０は、車載バッテリー２３を電力源とする電動モータ２４に直結しており、その回転動力により直接的に駆動される。冷却ファン９の回転数は、車載バッテリ２３と電動モータ２４とを接続する導線２５に設けられた電圧調整器２６と、冷却水６の温度を検知する水温センサ２０と、その水温センサ２０からの信号に基づいて電圧調整器２６を制御する第２制御装置２７と、からなる回転数制御手段により制御される。
In this embodiment, the rotating shaft 10 of the cooling fan 9 is directly connected to the electric motor 24 using the in-vehicle battery 23 as a power source, and is directly driven by the rotational power. The number of rotations of the cooling fan 9 is as follows: a voltage regulator 26 provided on a conducting wire 25 connecting the in-vehicle battery 23 and the electric motor 24; a water temperature sensor 20 that detects the temperature of the cooling water 6; The second controller 27 that controls the voltage regulator 26 based on the signal is controlled by a rotation speed control means.
第２制御装置２７は、水温センサ２０が冷却水６の温度が高いことを検知したときには、電動モータ２４に印加される電圧を上げて冷却ファン９の回転数を増加させる。一方で、冷却水６の温度が低いことを検知したときには、電動モータ２４に印加される電圧を下げて冷却ファン９の回転数を減少させる。
When the water temperature sensor 20 detects that the temperature of the cooling water 6 is high, the second control device 27 increases the voltage applied to the electric motor 24 to increase the rotation speed of the cooling fan 9. On the other hand, when it is detected that the temperature of the cooling water 6 is low, the voltage applied to the electric motor 24 is lowered to reduce the rotational speed of the cooling fan 9.
この第２制御装置２７には、手動操作可能な電気スイッチからなる第２手動スイッチ２８が電気的に接続している。第２制御装置２７は、第２手動スイッチ２８がＯＮになると、電動モータ２４に印加される電圧が０にまで低下するように電圧調整器２６を作動させる。印加される電圧が０になると、電動モータ２４に回転動力が発生しなくなるので、冷却ファン９の回転軸１０はフリーな状態になる。
The second control device 27 is electrically connected to a second manual switch 28 made of an electric switch that can be manually operated. When the second manual switch 28 is turned on, the second control device 27 operates the voltage regulator 26 so that the voltage applied to the electric motor 24 is reduced to zero. When the applied voltage becomes zero, no rotational power is generated in the electric motor 24, so that the rotating shaft 10 of the cooling fan 9 becomes free.
このように構成することで、冷却ファン９の回転が直に妨げられることになる場合でも、冷却ファン９の回転数を前もって強制的に０にまで低下させて、冷却ファン９が回転自在になるので、冷却ファン９の破損を防止することができる。
With this configuration, even when the rotation of the cooling fan 9 is directly hindered, the number of rotations of the cooling fan 9 is forcibly reduced to 0 in advance, so that the cooling fan 9 can freely rotate. Therefore, damage to the cooling fan 9 can be prevented.
本発明の内燃機関の冷却ファン操作システムは、自動車のガソリンエンジンやディーゼルエンジンは勿論のこと、建設機械や船舶のエンジンなどにも適用できることは言うまでもない。
It goes without saying that the cooling fan operating system for an internal combustion engine of the present invention can be applied not only to automobile gasoline engines and diesel engines, but also to construction machinery and marine engines.
１ エンジン
２ シリンダブロック
３ クランクシャフト
４ ピストン
５ 気筒
６ 冷却水
７ ウォータジャケット
８ ラジエータ
９ 冷却ファン
１０ 回転軸
１１ 流体継手
１２ 継手プーリ
１３ クランクシャフトプーリ
１４ ファンベルト
１５ 入力側プレート
１６ 出力側プレート
１７ オイルタンク
１８ オイル供給管
１９ オイルポンプ
２０ 水温センサ
２１ 第１制御装置
２２ 第１手動スイッチ
２３ 車載バッテリ
２４ 電動モータ
２５ 導線
２６ 電圧調整器
２７ 第２制御装置
２８ 第２手動スイッチ DESCRIPTION OFSYMBOLS 1 Engine 2 Cylinder block 3 Crankshaft 4 Piston 5 Cylinder 6 Cooling water 7 Water jacket 8 Radiator 9 Cooling fan 10 Rotating shaft 11 Fluid coupling 12 Joint pulley 13 Crankshaft pulley 14 Fan belt 15 Input side plate 16 Output side plate 17 Oil tank 18 Oil supply pipe 19 Oil pump 20 Water temperature sensor 21 First control device 22 First manual switch 23 On-vehicle battery 24 Electric motor 25 Conductor 26 Voltage regulator 27 Second control device 28 Second manual switch
２ シリンダブロック
３ クランクシャフト
４ ピストン
５ 気筒
６ 冷却水
７ ウォータジャケット
８ ラジエータ
９ 冷却ファン
１０ 回転軸
１１ 流体継手
１２ 継手プーリ
１３ クランクシャフトプーリ
１４ ファンベルト
１５ 入力側プレート
１６ 出力側プレート
１７ オイルタンク
１８ オイル供給管
１９ オイルポンプ
２０ 水温センサ
２１ 第１制御装置
２２ 第１手動スイッチ
２３ 車載バッテリ
２４ 電動モータ
２５ 導線
２６ 電圧調整器
２７ 第２制御装置
２８ 第２手動スイッチ DESCRIPTION OF
Claims (5)
- 内燃機関の冷却水が循環するラジエータの後方に設置された冷却ファンと、前記冷却ファンを駆動する回転動力源と、前記冷却水の温度に基づいて前記冷却ファンの回転数を制御する制御手段とを備えた内燃機関の冷却ファン操作システムにおいて、
前記制御手段に、前記冷却ファンと前記回転動力源との接続を該冷却ファンがスリップ可能な状態へ切り替える手動スイッチを設けたことを特徴とする内燃機関の冷却ファン操作システム。 A cooling fan installed behind a radiator through which cooling water of the internal combustion engine circulates, a rotational power source for driving the cooling fan, and a control means for controlling the number of revolutions of the cooling fan based on the temperature of the cooling water; In an internal combustion engine cooling fan operating system comprising:
A cooling fan operating system for an internal combustion engine, wherein the control means is provided with a manual switch for switching the connection between the cooling fan and the rotational power source to a state in which the cooling fan can slip. - 前記回転動力源が流体継手を通じて回転動力が伝達される前記内燃機関であり、かつ前記制御手段が前記冷却水の温度に基づいて前記流体継手のスリップ率を制御するスリップ率制御手段であって、
前記手動スイッチはＯＮになると、前記流体継手のスリップ率を前記冷却ファンの回転数が最小となる最大スリップ率へ切り替える請求項１に記載の内燃機関の冷却ファン操作システム。 The rotational power source is the internal combustion engine to which rotational power is transmitted through a fluid coupling, and the control means is slip rate control means for controlling the slip ratio of the fluid coupling based on the temperature of the cooling water;
2. The cooling fan operating system for an internal combustion engine according to claim 1, wherein when the manual switch is turned on, the slip ratio of the fluid coupling is switched to a maximum slip ratio at which the rotation speed of the cooling fan is minimized. - 前記スリップ率制御手段を、前記流体継手にオイルを供給するオイルポンプと、前記冷却水の温度を検知する水温センサと、前記水温センサの信号に基づいて前記オイルポンプを制御する制御装置とから構成するとともに、前記手動スイッチを前記制御装置に電気的に接続する電気スイッチから構成し、
前記制御装置は、前記手動スイッチがＯＮになると、前記オイルポンプから前記流体継手に該流体継手のスリップ率が最大スリップ率になるようにオイルを供給又は排出する請求項２に記載の内燃機関の冷却ファン操作システム。 The slip ratio control means includes an oil pump that supplies oil to the fluid coupling, a water temperature sensor that detects the temperature of the cooling water, and a control device that controls the oil pump based on a signal from the water temperature sensor. And comprising an electrical switch electrically connecting the manual switch to the control device,
The internal combustion engine according to claim 2, wherein when the manual switch is turned on, the control device supplies or discharges oil from the oil pump to the fluid coupling so that a slip ratio of the fluid coupling becomes a maximum slip ratio. Cooling fan operation system. - 前記回転動力源が前記冷却ファンに直結する電動モータであり、かつ前記制御手段が前記冷却水の温度に基づいて前記電動モータを制御する回転数制御手段であって、
前記手動スイッチはＯＮになると、前記冷却ファンの回転数を０へ切り替える請求項１に記載の内燃機関の冷却ファン操作システム。 The rotational power source is an electric motor directly connected to the cooling fan, and the control means is a rotational speed control means for controlling the electric motor based on a temperature of the cooling water;
The cooling fan operating system for an internal combustion engine according to claim 1, wherein when the manual switch is turned on, the number of rotations of the cooling fan is switched to zero. - 前記回転数制御手段を、前記電動モータに印加される電圧を調整する電圧調整器と、前記冷却水の温度を検知する水温センサと、前記水温センサの信号に基づいて前記電圧調整器を制御する制御装置とから構成するとともに、前記手動スイッチを前記制御装置に電気的に接続する電気スイッチから構成し、
前記制御装置は、前記手動スイッチがＯＮになると、前記電動モータに印加される電圧を０にまで低下する請求項４に記載の内燃機関の冷却ファン操作システム。 The rotational speed control means controls the voltage regulator based on a voltage regulator that regulates a voltage applied to the electric motor, a water temperature sensor that detects the temperature of the cooling water, and a signal from the water temperature sensor. Comprising a control device, and comprising an electric switch electrically connecting the manual switch to the control device,
The cooling fan operating system for an internal combustion engine according to claim 4, wherein the control device reduces the voltage applied to the electric motor to 0 when the manual switch is turned on.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012069086A JP2013199893A (en) | 2012-03-26 | 2012-03-26 | Cooling fan operation system of internal combustion engine |
| JP2012-069086 | 2012-03-26 |
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| WO2013146169A1 true WO2013146169A1 (en) | 2013-10-03 |
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| PCT/JP2013/056305 WO2013146169A1 (en) | 2012-03-26 | 2013-03-07 | System for operating cooling fan in internal combustion engine |
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| KR101628535B1 (en) | 2014-11-20 | 2016-06-08 | 현대자동차주식회사 | An apparatus for controlling cooling fan speed and a control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6236215U (en) * | 1985-08-20 | 1987-03-03 | ||
| JPH1193665A (en) * | 1997-09-18 | 1999-04-06 | Yutani Heavy Ind Ltd | Engine cooling device |
| JP2009057864A (en) * | 2007-08-30 | 2009-03-19 | Toyota Motor Corp | Control device and control method for vehicle, program implemented by the method using computer, and recording medium recorded with the program |
-
2012
- 2012-03-26 JP JP2012069086A patent/JP2013199893A/en active Pending
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6236215U (en) * | 1985-08-20 | 1987-03-03 | ||
| JPH1193665A (en) * | 1997-09-18 | 1999-04-06 | Yutani Heavy Ind Ltd | Engine cooling device |
| JP2009057864A (en) * | 2007-08-30 | 2009-03-19 | Toyota Motor Corp | Control device and control method for vehicle, program implemented by the method using computer, and recording medium recorded with the program |
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