JPH06317152A - Water ejection controller for radiator - Google Patents

Abstract

PURPOSE:To secure engine performance and to enhance engine output by enabling the cooling efficiency of a radiator to be enhanced without making driver's operations complex. CONSTITUTION:A tank 6 is provided in which water to be jetted toward a radiator 4 equipped in an engine is provided, and a pump 8 for feeding the water retained in the tank is provided, and a nozzle 16 from which water that the pump feeds is jetted to the radiator 4 is provided, and a control portion 20 is provided which drives and controls the pump 8 so that a prescribed amount of water is jetted from the nozzle to the radiator 4 according to the operating condition of the engine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water injection control device for a cooler, and more particularly to a water cooler capable of appropriately injecting water in accordance with the operating condition of an engine, thereby annoying the driver's operation. The present invention relates to a water injection control device for a cooler that can improve the cooling efficiency of the cooler without fail and can secure engine performance of the engine and improve engine output.

[0002]

2. Description of the Related Art An engine mounted on a vehicle or the like is equipped with various coolers in order to secure engine performance and improve engine output. As the engine cooler, a radiator that cools the engine cooling water that has warmed up, an intercooler that cools the heated supercharged air that the supercharger supercharges,
There is an oil cooler that cools the lubricating oil of the engine.

The radiator cools the cooling water circulated in the engine and prevents the engine from overheating to ensure engine performance. The intercooler cools the heated supercharged air supercharged by the supercharger to improve the charging efficiency and improve the engine output. The oil cooler cools the lubricating oil and avoids thermal deterioration of the lubricating oil to ensure engine performance.

[0004]

By the way, the cooler provided in the engine is required to have higher cooling efficiency as the output of the engine is larger. As a means for increasing the cooling efficiency of the cooler, it is conceivable to increase the size of the cooler or provide a cooling fan for feeding cooling air.

However, an increase in the size of the cooler causes an increase in the installation space of the cooler in the engine room.
There is an inconvenience that the size cannot be easily increased. Further, the provision of the cooling fan requires a cooling fan and a fan motor, and also requires a space for installing the cooling fan and the fan motor, which is a disadvantage that cannot be easily provided.

Therefore, recently, a water injection device for improving the cooling efficiency of the cooler has been proposed. This water injection device
When a large output of the engine is required, water is injected into the cooler to improve the cooling efficiency, thereby ensuring the engine performance and improving the engine output.

However, the conventional water injection device is manually turned on by the driver according to the operating state of the engine.
It was turned off and water was being injected into the cooler.

Therefore, the conventional water injection device has a disadvantage that the cooling efficiency of the cooler cannot be sufficiently improved because the water cannot be appropriately injected into the cooler according to the operating state of the engine. There is an inconvenience that the output of the engine cannot be improved. In addition, the conventional water injection device has a disadvantage that the driver cannot concentrate on the driving operation because it requires a manual on / off operation by the driver.

[0009]

In order to solve such inconvenience, the present invention provides a tank for storing water to be injected into a cooler provided in an engine, and sends the water stored in this tank. A pump for supplying water is provided, and a nozzle for injecting the water supplied by the pump into the cooler is provided, and the pump is driven so as to cause the cooler to inject water in a predetermined manner according to the operating state of the engine. A control unit for controlling is provided.

[0010]

According to the structure of the present invention, the control unit controls the drive of the pump so that the nozzle can cool the cooler to inject water in a predetermined manner according to the operating state of the engine. The cooler can be cooled by appropriately injecting water into the cooler.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. In FIG. 1, 2 is a water injection control device. The water injection control device 2 injects water into a radiator 4 which is a cooler provided in an engine (not shown).

The water injection control device 2 is provided with a tank 6 for storing water to be injected into a radiator 4 which is a cooler.
The tank 6 is provided with a pump 8 for feeding the stored water. The pump 8 is driven by the motor 10. The pump 8 is provided with the other end of a water absorption pipe 12 having one end communicating with the inside of the tank 6.

The pump 8 is provided with one end side of a water pipe 14 for feeding the water sucked by the water pipe 12 in communication therewith. The other end of the water supply pipe 14 is provided so as to communicate with a nozzle hole 18 of a nozzle 16 that injects water into the radiator 4. The nozzle 16 is disposed so as to face the radiator 4, and the nozzle hole 18 is provided so as to be oriented so that water can be sprayed onto the entire surface of the radiator 4.

The motor 10 for driving the pump 8 is connected to the control unit 20. The control unit 20 includes a cooling water sensor 22 for detecting a cooling water temperature, a throttle sensor 24 for detecting a throttle opening, and a rotation speed for detecting an engine speed as sensors for detecting an operating state of an engine (not shown). The sensor 26 is connected and provided.

The water injection control device 2 controls the control unit 20 to detect the signals from the various sensors 22 to 26 so as to control the nozzle 1
6, the motor 10 of the pump 8 is drive-controlled so that the radiator 4 injects water in a predetermined manner according to the operating state of the engine. Reference numeral 28 is a battery.

The control unit 20 sets the injection amount of water, the injection time, and the injection interval of the water injected to the radiator 4 to a predetermined value according to the operating state of the engine. For example, the control unit 20
As shown in FIG. 2, the injection amount V, the total operation time T, the injection time t1, and the pause time t2, which is the injection interval, are set according to the operating state of the engine, and at every pause time t2 within the total operation time T. The motor 10 is drive-controlled so that the radiator 4 is made to inject the water of the injection amount V for the injection time t1.

The operation will be described.

The water injection control device 2 indicates the operating state of the engine by a detection signal input from the cooling water sensor 22, the throttle sensor 24, and the rotation speed sensor 26 to the control unit 20 while the engine (not shown) is operating. I have a grasp.

The control unit 20 does not drive the motor 10 of the pump 8 when the engine operating condition is a steady operating condition.

That is, the control unit 20 controls the cooling water depending on the operating state in which the temperature of the cooling water can be sufficiently cooled by the cooling capacity held by the radiator 4 and the cooling capacity by the cooling capacity held by the radiator 4 by the throttle opening. The motor 10 of the pump 8 is not driven in an operating state in which the cooling water can be sufficiently cooled or in an operating state in which the engine speed is sufficient to cool the cooling water by the cooling capacity held by the radiator 4.

As a result, the water injection control device 2 does not inject water from the nozzle 16 to the radiator 4 during steady operation of the engine. Therefore, it is possible to avoid unnecessary consumption of the driving force of the engine.

The control unit 20 drives the motor 10 of the pump 8 to inject water into the radiator 4 when the operating state of the engine becomes a high output state.

That is, the control unit 20 sufficiently cools the cooling water depending on the operating state in which the temperature of the cooling water exceeds the cooling capacity held by the radiator 4 and the cooling capacity held by the radiator 4 with the throttle opening. The motor 10 of the pump 8 is driven in an impossible operating state or in an operating state in which the engine speed cannot sufficiently cool the cooling water due to the cooling capacity held by the radiator 4.

At this time, for example, as shown in FIG. 2, the control unit 20 supplies the radiator 4 with the injection amount V of water for the injection time t1 at every rest time t2 within the total operation time T according to the operating state of the engine. The motor 10 is drive-controlled so as to eject.

As a result, the water injection control device 2 can inject water from the nozzle 16 to the radiator 4 in a predetermined manner during the high-power operation of the engine without requiring a manual on / off operation by the driver. Therefore, the cooling efficiency of the radiator 4 can be improved without bothering the driver.

For this reason, the radiator 4 can sufficiently cool the cooling water that becomes high temperature during high-power operation of the engine, so that the engine performance can be secured and the engine output can be improved. Further, the driver can concentrate on the driving operation by not requiring the driver to manually turn on / off.

In this embodiment, a cooling water sensor 22, a throttle sensor 24, and a rotation speed sensor 26 are provided as sensors, and water is supplied to the radiator 4 by a detection signal input from the sensors 22 to 26 to the control unit 20. Although the fuel is injected, each of these sensors 22 to 26 is used alone or in combination with each other, and each sensor 22 to 26 is provided with a different sensor (for example, an air-fuel ratio sensor or an exhaust temperature sensor). Etc.) can also be used in combination.

As the sensor, the first and second temperature sensors 3 for detecting the cooling water temperatures of the inlet passage 30 on the upstream side of the radiator 4 and the outlet passage 32 on the downstream side.
4 and 36 are provided so as to be connected to the control unit 20, and the radiator 4 is provided by the detection signals of the first and second temperature sensors 34 and 36.
It is also possible to calculate the temperature difference between the cooling water temperatures on the upstream side and the downstream side, and to make the radiator 4 eject water when the temperature difference is small without sufficiently cooling the high temperature cooling water.

Further, for example, as shown in FIG. 2, the control unit 20 injects the water of the injection amount V into the radiator 4 for the injection time t1 at every rest time t2 within the total operation time T according to the operating state of the engine. The motor 10 is driven and controlled so as to control the time T.t1.t2 and the injection amount V are variable, and the continuous injection time is not provided within the total operation time T without the pause time t2. The motor 10 can also be drive-controlled so that the radiator 4 is caused to inject water of the injection amount V by t1, or the temperature of the cooling water can be sufficiently cooled by the cooling capacity held by the radiator 4. It is also possible to drive and control the motor 10 so that water is continuously jetted until.

Furthermore, in this embodiment, the nozzle 16 having the single nozzle hole 18 is illustrated, but FIG.
It can also be configured as shown in. Nozzle 3 shown in FIG.
8 has a nozzle passage 40, is formed in a tubular shape, and is formed so as to be bent so as to face substantially the entire surface of the radiator 4. The nozzle 38 has a nozzle passage 40.
Is connected to the other end of the water supply pipe 14 and the other end is closed, and a plurality of nozzle holes 42 are formed in the middle of the nozzle passage 40 so as to be directed to the radiator 4.

According to the nozzle 38 shown in FIG. 3, water can be sprayed uniformly from the plurality of nozzle holes 42 onto substantially the entire surface of the radiator 4, so that the cooling efficiency can be further improved.

Further, the water injection control device 2 in this embodiment exemplifies the radiator 4 as the cooler. For example, as shown in FIG. 4, the supercharged air heated by the supercharger is cooled. It can also be applied to the intercooler 44.

That is, the water injection control device 2 is provided with a tank 6 for storing water to be injected into the intercooler 44, which is a cooler, and a pump 8 for feeding the water stored in the tank 6. The pump 8 is driven by the motor 10. The pump 8 is provided with a water suction pipe 12 and a water feed pipe 14 in communication with each other, and the water feed pipe 14 is provided in communication with a nozzle hole 18 of a nozzle 16.

The motor 10 for driving the pump is connected to the controller 20. A temperature sensor 46 for detecting the supercharged air temperature, a throttle sensor 24 for detecting the throttle opening, and a rotation speed sensor 26 for detecting the engine speed are connected to the control unit 20 as sensors for detecting the operating state of the engine. Are provided.

The water injection control device 2 uses the control unit 20 to detect the signals from the various sensors 24, 26, and 46 so that the nozzle 16 causes the intercooler 44 to inject water in a predetermined manner according to the operating state of the engine. The motor 10 of No. 8 is driven and controlled. Reference numeral 28 is a battery.

As a result, the water injection control device 2 can inject water from the nozzle 16 to the intercooler 44 in a predetermined manner during the high-power operation of the engine without requiring a manual on / off operation by the driver. The cooling efficiency of the intercooler 44 can be improved without disturbing the driver's operation.

Therefore, the intercooler 44 can sufficiently cool the supercharged air that becomes hot due to supercharging during high-power operation of the engine, and can secure the engine performance and improve the engine output. Further, the driver can concentrate on the driving operation by not requiring the driver to manually turn on / off.

As the sensors, the first and second temperature sensors 52 and 54 for detecting the supercharged air temperatures of the intake passage 48 on the upstream side and the intake passage 50 on the downstream side of the intercooler 4 are connected to the control unit 20. The temperature difference between the upstream side and the downstream side of the intercooler 44 is calculated by the detection signals of the first and second temperature sensors 52 and 54, and the high temperature supercharged air cannot be cooled sufficiently. In addition, water can be jetted to the intercooler 44 when the temperature difference is small.

The water injection control device 2 of the present invention can be applied not only to the radiator 4 and the intercooler 44 but also to an oil cooler (not shown) for cooling the lubricating oil of the engine.

Further, the water injection control device 2 of the present invention is
Although the injection amount, the injection time, and the injection interval of water are set by the control unit 20, as shown in FIGS. 5 and 6, the operation unit 56 is additionally provided to the control unit 20 to set the injection amount, the injection time, and the injection interval. The configuration can be set by the driver, and the driver can arbitrarily inject water as desired.

The operating portion 56 is provided with a total operating time setting switch 58 for setting the total operating time T, a rest time setting switch 60 for setting a rest time t2 which is an injection interval, and an operating switch 62. A jet switch 64 for jetting water at any time is provided. Injection time t1
Is set by setting the rest time t2 with respect to the total operating time T,
Is set. Reference numeral 66 is an operation display LED that lights up when the water injection control device 2 is operating, reference numeral 68 is a waterless warning LED that lights up when there is no water in the tank 6, and reference numeral 70 is an injection display LED that lights up when water is injected.

According to this water injection control device 2, the same effect as that of the above-described embodiment can be obtained, and further, the operation unit 56 added to the control unit 20 is operated to change the injection amount, the injection time and the injection interval. The controller 2 can be set by the amount and time which can be set by the driver and which is set by operating the total operation time setting switch 58, the rest time setting switch 60, and the operation switch 62 of the operation unit 56.
The water can be jetted as desired by 0, and the driver can arbitrarily jet water as desired by the controller 20 by operating the jet switch 64 of the operation unit 56.

Therefore, not only can the controller 20 cause the intercooler 44 to automatically inject water appropriately in accordance with the operating state of the engine, but also the operating portion 56 can cause water to enter the intercooler 44 as desired. It can be jetted.

[0045]

As described above, according to the present invention, the water injection control device can appropriately inject water from the nozzle into the cooler according to the operating state of the engine to cool the cooler. For this reason, the cooling efficiency of the cooler can be improved without bothering the driver's operation, and the engine performance of the engine and the engine output can be improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment in which a water injection control device according to the present invention is applied to a radiator.

FIG. 2 is a timing chart of water injection control.

FIG. 3 is an explanatory view showing another embodiment of the nozzle.

FIG. 4 is a schematic configuration diagram showing an embodiment in which the water injection control device according to the present invention is applied to an intercooler.

FIG. 5 is a schematic configuration diagram showing another embodiment in which the jet water control device according to the present invention is applied to an intercooler.

FIG. 6 is a front view of an operation unit.

[Explanation of symbols]

 2 Water injection control device 4 Radiator 6 Tank 8 Pump 10 Motor 12 Water absorption pipe 14 Water supply pipe 16 Nozzle 18 Nozzle hole 20 Control part 22 Cooling water sensor 24 Throttle sensor 26 Rotation speed sensor 28 Battery

Claims (1)

[Claims] 1. A tank for storing water injected into a cooler provided in an engine is provided, a pump for feeding water stored in the tank is provided, and the water fed by the pump is provided for the cooler. A nozzle for injecting water into the water, and a controller for driving and controlling the pump to inject water from the nozzle to the cooler in a predetermined manner according to the operating state of the engine. Control device.