JPS59101531A - Shutter device for radiator - Google Patents

Abstract

PURPOSE:To improve a heating effect, to reduce a warming-up time, to improve fuel consumption, and to reduce creation of noise, by a method wherein, through comparision of the output of a sensor with a reference value, the shutter device for a radiator is automatically operated. CONSTITUTION:A shutter 6 is located in front of a radiator 7. An actuator control valve 10 consisting of an electromagnetic 4-way valve operates an actuator 8 during ON operation and OFF operation to open and close the shutter. A device consists of a control circuit in that, according to the outputs of a temperature sensor 15 for detecting the temperature of cooling water, a rotation sensor 16 for detectiing the number of revolutions of an engine, a noise sensor 17 for detecting noise in an engine room, and an idle switch 18 for detecting switching of an dling condition from and to a running condition in a transmission, the corresponding actuator control mechanism is turned ON during low temperature operation, idling, overcooling, and rapid acceleration, and said actuator control mechanism is turned OFF during overheating and steady running. This achieves a desired purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter device for a radiator for a car and other radiators.

The jetter is originally installed to prevent the engine from overheating, but when the atmospheric temperature is low, such as in cold regions, the jetter prevents the temperature of the cooling water from rising, causing an overcooling phenomenon and reducing the heating effect. There was a problem. Furthermore, in recent years, prior to improvements in the combustion system, the thermal efficiency of the engine has increased, resulting in improved fuel efficiency, but on the other hand, the temperature of the cooling water tends not to rise, which makes overcooling more likely to occur. Furthermore, although it is the fate of internal combustion engines to supply an extremely rich air-fuel mixture from when the engine starts when it is cold until it warms up, it is an undesirable property from the two points of view of fuel efficiency. It was a human issue.

In addition, vehicle width noise has become a problem as a type of pollution, and as a countermeasure to this problem, a sealed structure with soundproof soles has been adopted in the engine room and inside the vehicle to prevent noise from flowing into the air. Since the installation is an absolute requirement, there is no guarantee that it will be sealed, and as a result, there have been no effective countermeasures against the leakage of noise from the radiator into the engine room.

In view of the above-mentioned problems, the present invention provides a shutter that is disposed on the front or rear surface of a radiator and is opened and closed by an actuator, and an actuator control that operates the actuator in the shutter closing direction and the gloss opening direction when ON and OFF, respectively. It is equipped with a temperature sensor that detects the cooling water temperature, a rotation sensor that detects the rotation speed, a noise sensor that detects noise in the engine room, and an idle switch that detects the sound of switching between idling and driving conditions in the transmission. At low temperatures, idling, overcooling, and sudden acceleration, the actuator control switch is turned ON and overheating, and during steady driving, the actuator control switch 4 is set to OFF ('c). The present invention aims to provide a shutter device for a radiator that achieves the same heating effect, shortens coughing time, improves fuel efficiency, and reduces strong noise by forming the same with the 4111 circuit. To celebrate this with reference to an embodiment shown below, in FIG. 1, J is a rectangular frame, 2 is a pair of left and right vertical frames (only one of which is shown in the drawing) fixed in the frame 1. ), 3 is a pair of vertical frames 2° and 2 horizontal frames,
4 is an operating rod movably arranged along the vertical frame 2, and 5 is the two pins 5a provided at one end of the 4jjIc frame 2+]
A 1ml bottle 5 attached to the other end of the rod 4.
a (j'H1 not shown) are respectively pivoted on the vertical frame 2, and are pivotally supported between the vertical frames 2 and 2 and on the operating rod 4, and are opened and closed by the movement of the operating lever 4, and one edge. A plurality of parallel vanes with seals 51 attached to the parts thereof constitute a shutter 6. It is located. 8 is fixed to the frame l and connected to a positive pressure source (not shown) via a pair of positive pressure introduction #69, and the direction of operation is changed by switching the positive pressure introduction path 9 by a shutter control valve to be described later. 101-1: A pressurized actuator that opens and closes the operating rod 4 to open and close the vertical moving part vane 5. The actuator control valve is an electromagnetic four-way valve capable of switching the positive pressure introduction path 9, and operates the actuator 8 in the shutter closing direction and the shirt shutter opening direction when turned on and off. In addition,] 1 is: Cabinet entry, 12 is cooling water passage, 13
is a water pump, and 14 is a thermostat.

FIG. 3 is a block diagram of a control circuit for controlling the actuator control valve 0, in which 15 is a cooling water passage 14.
16 is a rotation sensor installed in the engine 11 and detects the engine speed; 17 is a rotation sensor installed in the engine room (not shown) and detects the temperature of the cooling water; A noise sensor that detects noise; 18 is an idle switch that is attached to the transmission (not shown) and detects the switching between idling and running conditions and turns ON when the idling state is in, that is, the output is "11"; 19 is a temperature sensor 150 output Compare T (corresponding to the detected temperature) with the output '1゛3 corresponding to the predetermined upper limit temperature (boundary temperature for overheating or not), and if 'l''<T3, the output is 'H The high temperature comparator 20 compares the output T of the temperature sensor 15 with the output T1 corresponding to a predetermined lower limit temperature (the boundary temperature of whether or not it is a low temperature state) and calculates 'J, + (Illll'). If the output is '
The low temperature comparator 21, which is January, compares the output T of the temperature sensor 15 with the output T2 corresponding to a predetermined medium humidity (standard engine temperature) Naruchu humidity comparator, 22 is rotation sensor 1
6's output N (corresponding to the detected rotation speed) and the output corresponding to a predetermined reference rotation speed (boundary rotation speed for high rotation or not) are compared, and if NUN, the output is rHJ. 23 is a medium humidity comparator 21 and a first comparator 2.
2 is an AND circuit that determines overcooling and outputs "11" when both outputs are r I-IJ. 25 is an AND circuit that determines overcooling and outputs "11". a second comparator whose output is rHJ when S>Sl, compared to the output S1 corresponding to the boundary sound pressure);
7 is a low temperature comparator 20. AND circuit 23° second comparator 2
5. OR circuit 28 whose output is "11" when the output of at least one of the idle switches 18 is rHJ;
The output of the surface temperature comparator 19 and the OR circuit 27 is "l"
When the output becomes "1", the actuator control valve l
This is an AND circuit that turns on O (see Figure 2).

Since the radiator shutter device according to the present invention is configured as described above, the temperature sensor 15
Since the output T of is T<T, the output of the low temperature comparator 20 becomes [1 month, and as a result, the output of the OR circuit 27 becomes rHJ
becomes. Also, since rIs (Tl) is naturally 3, the output of the high temperature comparator 15 is also "11".

Therefore, since the output of the AND circuit 28 becomes "H", the actuator control valve 10 is turned on, and as a result, the shutter 6 is closed, preventing a drop in engine temperature, improving startability, and shortening the warm-up time. This improves fuel efficiency by a large 11%. During the IJ song, the output of the idle switch 18 becomes rH.
As a result, the output of the OR circuit 27 reaches "1". Also, since T<T3 during normal idling, the output of the temperature comparator 15 becomes "H". Therefore, since the shutter 6 is closed in the same way as when the temperature is low, leakage of noise inside the engine room to the outside of the radiator 7 is effectively prevented.

During normal driving, the output 'V of the temperature sensor 15 is T2 <'l'< T3, so only the output of the high temperature comparator 19 is r I - I J, and the output of the low temperature comparator 19 is The outputs of both the humidity comparator 20 and the medium humidity comparator 21 are rLJ. Also, the output N of the rotation sensor 16 is N <
Since the output of the noise sensor 17 is S>Sl, the output of the second comparator 25 is also "L", and the idle switch 18 is turned off. Therefore, the output is also "L". Therefore, since the output of the OR circuit 27 becomes "L", the output of the AND circuit 28 becomes rLJ, and as a result, the actuator control valve 10 is turned off and the shutter 6 is opened, so that the engine temperature is maintained at an appropriate temperature. Overcooling tends to occur when the engine is braking and the speed is increasing.
At this time, the output T of the temperature sensor 15 becomes T<T2, so the output of the intermediate humidity comparator 21 becomes rHj, and the output N of the rotation sensor 16 becomes N)N, so that the output of the first comparator 22 becomes rHj. The output becomes "H", and as a result, the output of the AND circuit 23 becomes rHJ. Also, roaring E,'< T
3, the output of the high temperature comparator 15 is also "tr". Therefore, since the output of the AND circuit 28 becomes rI-IJ, the actuator control valve 10 is turned on, and as a result, the shutter 6 is closed, so overcooling is prevented and the heating effect is improved. During rapid acceleration, the engine noise increases, so the output S of the noise sensor 17 does not satisfy S>S, and as a result, the output of the second comparator 25 becomes rJ, so the output of the OR circuit 27 becomes rJ.

Further, since it is normal that T<T3 at this time, the output of the privacy comparator 15 becomes rl-1j. Therefore, since the output of the AND circuit 28 becomes "H", the actuator control valve 10 is turned on, and as a result, the shutter 6 is closed, effectively preventing the noise inside the engine room from leaking to the outside of the radiator 7. Ru. During overheating, the dj force T of the temperature sensor J5 satisfies T>T3, so the output of the high temperature comparator 19 becomes "L". Therefore, even if the output of other circuits is "11", the output of the AND circuit 28 is rJ, and as a result, the actuator control valve ]0
is turned OFF and the gloss 6 is opened, thereby preventing overheating.

Figure 4 shows a block diagram of one circuit on the open side of the second actual visual inspection, and this shows the effects of not only noise but also other external sounds when there is only one sound sensor. In consideration of the possibility of malfunction due to engine noise, two noise sensors are placed facing each other surrounding the engine, and information from both noise sensors is used to determine whether or not engine noise is occurring during sudden acceleration. It is something. In this block diagram, as shown in FIG. 5, 27' is the other nine noise sensors that are arranged opposite to the noise sensor 27 so as to surround the engine 11 together with the noise sensor 27, and 25' is the other nine noise sensors of the noise sensor 17'. Comparing the output S' with the output S2 corresponding to a predetermined reference sound pressure (boundary sound pressure for whether or not there is sudden acceleration)
>Third comparator whose output is "11" in the case of S2, 29
is ++4., where the outputs of the third comparator 25 and the third comparator 25' are both "1". ．． This is an AND circuit that determines that engine noise occurs at a sudden speed of 7J () and outputs "H".

Since the second embodiment is configured as described above, for example, when an external sound having a sound pressure equal to or higher than the reference sound pressure Sl+82 comes from the front of the vehicle during normal driving, the noise sensor 17 is activated as shown in FIG. ' is directed toward the front of the vehicle, so the output of the third comparator 25' is "II"; however, since the noise sensor 17 is directed toward the engine 11, that is, toward the rear of the vehicle, the output of the second comparator 25' is "II". The output of the AND circuit 25 becomes "L", and as a result, the output of the AND circuit 29 remains "L". Also, at this time, only the output of the high temperature history comparator 19 is "11".
Low temperature comparator 20. The outputs of the intermediate temperature layer comparator 21° rotation sensor 16 and the idle switch 18 are both "L". Therefore, since the output of the OR circuit 27 remains "L", the output of the AND circuit 28 also remains "L".
As a result, the actuator mll (as the ad valve 10 remains OFF, the shutter 6 is open.If external noise comes from the rear of the vehicle, the shutter 6 closes based on the same principle. In addition, there is no problem because both sensors 17 and l7' do not detect external sounds from other than the directional line of the noise sensors 17 and 17'.On the other hand, during sudden acceleration, the sound pressure of one engine sound is the standard. If the sound pressure Sl is 82 or more, 1 noise sensor 17
and 17' are both directed towards engine 11, so
The outputs of the second comparator 25 and the third comparator 25' both become "IJ", and as a result, A1? The output of circuit 29 is
11'' and the output of the OR circuit 27 also becomes ``IJ''.

Also, at this time, the output of the comparator 15 is "I4". Accordingly, since the output of the AND circuit 28 becomes "■]", the actuator control valve 10 is turned ON, and as a result, the gloss 6 is closed. In this way, since only engine 1 noise is detected, it is possible to prevent engine noise from leaking to the outside during sudden acceleration without causing malfunction.

It should be noted that even in this second embodiment, there is a possibility that a malfunction will occur if foreigners enter from both the front and rear directions. Therefore, in order to completely prevent malfunctions caused by external sounds, multiple sets of noise sensors as shown in Fig. 6]7+ +17
2 + 173y 174 are arranged so as to surround 1 receiving circuit 11 from all directions, and when all of them detect sound pressure equal to or higher than the reference sound pressure, that is, all AND circuits 29 + 1
When the output of 292.293.294 becomes rI-IJ, the output of AND circuit 30 becomes "I"1" and OR circuit 2
It is sufficient if M is set so that it can be input to 7. Note that the number of noise sensors and comparators may be an odd number, and in that case, the configuration is such that the outputs of all the comparators are input directly to the AND circuit 30.

Fig. 7 shows a block diagram of the control circuit of the third embodiment, and this is designed to take into account that the sound pressure of the engine noise may be louder than during sudden acceleration. When determining whether or not engine noise is occurring, the engine speed increase rate is detected and this information is combined with information from the noise sensor. In this block diagram, 31 is a differentiator that differentiates the output N to calculate the rate of increase in rotation speed dN/di;
2 is the output N of the differentiator 31 corresponding to the output aN/dt and a predetermined reference rate of increase (boundary rate of increase of whether or not it is sudden acceleration).
33 is the fourth comparator whose output becomes "11" when dN/d t'>NZ; 1) The first play timer whose forward output of 1 is "11", 34 is the first comparator 2
When the outputs of 5 and the first array timer 33 are both "H", the output is [January], and the AND circuit 35 is an AND circuit whose output is "J" for a predetermined period of time D2 when the output of the AND circuit 34 is "IJ". This is the second play timer which becomes "Fl".

Since the third embodiment is configured as described above, during sudden acceleration, the output dN/di of the differentiating circuit 31 becomes dN/di.
Since dL >N', the output of the fourth comparator 32 is rl
-IJ and as a result, the output of the first play timer 33 becomes "H" for a predetermined time D1. On the other hand, the sound pressure of the engine noise exceeds the reference sound pressure a little later than the time when sudden acceleration is detected based on the information from the rotation sensor 16, but at this time the output S of the noise sensor 17 becomes S>8+, so the sound pressure exceeds the reference sound pressure. The output of one comparator 25 becomes rHJ.

Therefore, the output of the first det/it timer 33 and the first comparator 2
At this time, the output of the AND circuit 34 becomes "H" because the output of the AND circuit 34 becomes "H" at the same time.

In this way, the output of the second play timer 35 becomes "H" for a predetermined second time D2 (the sound pressure of the noise is at its maximum), so the output of the OR circuit 27 also becomes I''J for the same second time. Also, since it is normal that T<T3 at this time, the output of the high temperature comparator 15 becomes "[I". Therefore, the AND circuit 28 becomes rJ during the predetermined time D2, so the actuator control valve 10 is turned on, and as a result, the shutter 6 is closed for a predetermined time D2.In this way, leakage of engine noise to the outside only during sudden acceleration can be reliably prevented.

FIG. 8 shows a block diagram of the control circuit of the fourth embodiment, which is similar to the third embodiment in that the control circuit of the second embodiment receives information from the rotation sensor and information from the noise sensor. By adding a circuit that synthesizes the engine noise, it is possible to reliably prevent engine noise from leaking to the outside during sudden acceleration without causing malfunction.

Note that, unlike the above embodiments, the actuator 8 is of a negative pressure type as shown in FIG. is made into a three-way valve so that negative pressure and atmospheric air can be introduced back into the negative pressure introduction path 91 by ON-OFF operation, and a vane 5 is installed between the frame l of the shutter 6 and the operating rod 4 on the operating rod 4. A spring that gives the habit of moving in the direction of opening (
(not shown) may be stretched. Further, instead of the actuator 8, an air cylinder, a hydraulic cylinder, a servo motor, or the like may be used.

As described above, the radiator shutter device according to the present invention has important practical advantages in that it can improve the suction effect, shorten warm-up time, improve fuel efficiency, and reduce noise.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a shutter according to an embodiment of the radiator shutter manufacturing according to the present invention, FIG. 2 is a schematic cross-sectional view showing the structure of the shutter drive section of the above-mentioned embodiment, and FIG. 3 is a perspective view of the shutter according to the above embodiment. FIG. 4 is a block diagram of the control circuit of the second embodiment, FIG. 5 is a schematic sectional view showing the noise sensor Z device of the second embodiment, and FIG. 6 is a block diagram of the control circuit of the example. Schematic diagrams illustrating other examples of noise sensors, FIGS. 7 and 8
The figures are block diagrams of the control circuits of the third and fourth embodiments, respectively, and FIG. 9 shows the general Vdh
It is an outside view. 6... Shutter, 7... Vehicle radiator, 8... Actuator, 9... Positive pressure introduction path, 10... Actuator control valve, 15... Temperature sensor, 16... Rotation sensor, 17... Noise sensor, 18. Idle switch, 19.. High temperature comparator, 20.. Low temperature comparator, 21.. Medium temperature comparator, 22.. First comparator, 2
5...Second comparator, 27...OR circuit, 28 AND circuit. Agent Tsukasa Shinohara Figure 4 19 Figure 5 O 6 Figure 19 Figure 28

Claims (5)

[Claims] (1) A shutter that is placed on the front or rear surface of the radiator and is opened and closed by an actuator, and
An actuator control is v M that operates the actuator in the shutter closing direction and the shirt shutter closing direction when N and OFF, a temperature sensor that detects the cooling water temperature, a rotation sensor that detects the engine speed, and a noise sensor that detects noise in the engine room. It is equipped with a noise sensor that detects noise and an idle switch that detects switching between idling and driving conditions in the transmission.
Turn on the actuator control hNm during idling, overcooling, and sudden acceleration, and 1 when overheating.
81+1j1 to turn off the controller when running on the tail.
A radiator shutter device composed of 1141 circuits. (2) The radiator shutter device according to claim (1), wherein whether or not engine noise occurs during rapid acceleration is determined based on information from - noise sensors. (3) Claims (1) characterized in that whether or not engine noise occurs during sudden acceleration is determined based on information from +Na noise sensors arranged in opposition so as to surround the engine. ) is a shutter device for the radiator of the pirates. (4) Claim (2) characterized in that it is determined whether or not engine noise occurs during sudden acceleration by combining information from a noise sensor and information from a rotation sensor.
) or the radiator shutter device according to (3). (5) In the event of overheating, the actuator control mode is set to "OFI" to open the shutter regardless of the output heat of other circuits.Claims (2) to (4) The radiator shutter device according to any one of the above.