JPH0242488Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a roll stopper control device that prevents the engine from rolling for a predetermined period of time when the amount of change in depression of the accelerator is greater than or equal to a predetermined amount.

The engine installed in a car vibrates due to changes in rotation, etc., but when the amount of change in the accelerator pedal is more than a predetermined amount, such as when the accelerator is suddenly depressed (e.g. when the accelerator is revved up), (when the engine speed is large), the engine speed changes rapidly, which tends to cause large rolling in the engine, and such behavior needs to be suppressed by strongly regulating the engine movement. If the regulation is too strong, engine vibrations will be directly transmitted to the vehicle body when the engine is idling, causing discomfort to the occupants.

This idea was made in view of the above points,
The purpose is to provide a roll stopper control device that drives a roll stopper for a predetermined period of time to prevent engine rolling when the amount of change in depression of the accelerator is greater than or equal to a predetermined amount.

An embodiment of this invention will be described below with reference to the drawings. Figure 1 shows the loading location of the engine in a FF vehicle. In FIG. 1, 11 is an engine, and 12 is a transmission installed on the side of the engine 11. The transmission 12 is connected to the vehicle body 1 by a transmission mount 13.
4. Further, the engine 11 is mounted on the vehicle body 14 by a left mount 15. Therefore, the engine 11 and the transmission 12 installed on the side thereof are connected by the transmission mount 13 and the left mount 15.
is placed on the vehicle body 14. Further, a front roll stopper 16 is provided on the front surface of the engine 11, and a rear roll stopper 17 is provided on the rear surface. The front roll stopper 16 and the rear roll stopper 17 are connected to the engine 11.
It has a damper function that alleviates the rolling motion of the vehicle, and the performance of the damper function can be controlled electrically. Here, FIG. 2 is a side view showing the positional relationship between the front roll stopper 16 and the rear roll stopper 17.

Next, the basic principles of the front roll stopper 16 and the rear roll stopper 17 will be explained using FIG. In FIG. 3, chambers A and B formed in hollow casings 3 and 4 made of an elastic material such as rubber are filled with oil, and a separating member is provided between chambers A and B. 21 are provided. This separation member 21 has two through holes, one of which is connected to the first orifice 2.
2, and the other one is called a second orifice 23. Here, the inner diameter of the first orifice 22 is formed to be considerably larger than that of the second orifice 23. A rotary valve 24 is provided within the first orifice 22, and the rotary valve 24 is rotated 90 degrees by a solenoid valve (not shown) to control opening and closing of the first orifice 22. Incidentally, the casings 3 and 4 are integrally connected by a connecting member 5, and a bracket 6 connected to the engine 11 is attached to the connecting member 5. As a result, the above casings 3 and 4
is attached to the engine 11. On the other hand, a bracket 7 fixed to the vehicle body is connected to one end of the separation member 21. Therefore, engine 1
When the connecting member 5 vibrates in the direction of arrow D due to the rolling movement of the orifice 2, etc.
2 and 23, and is transmitted to the separating member 21 as minute vibrations in the direction of arrow C. In this case, if the rotary valve 24 is rotated to close the first orifice 22, the oil between chambers A and B will flow only through the second orifice 23. As the amount of passage becomes smaller, the pressure difference between chambers A and B becomes larger (state of large damping force), and the amount of vibration transmitted to the vehicle body increases, but the rolling motion of the engine 11 can be effectively suppressed. . on the other hand,
When the first orifice 22 is opened due to rotation of the rotary valve 24, the first orifice 22
Since oil flows between chambers A and B through the second orifice 23, the amount of oil passing between chambers A and B increases, and the pressure difference between chambers A and B becomes small. (a state in which the damping force is small), the function of preventing rolling of the engine 11 is reduced, but the transmission position of engine vibration to the vehicle body becomes smaller.

Hereinafter, a roll stopper control device according to an embodiment of this invention will be explained with reference to FIG.
In FIG. 4, 31 is an accelerator opening sensor that detects the amount of depression of the accelerator. The output of this accelerator opening sensor 31 is input to an accelerator speed detection circuit 32. This accelerator speed detection circuit 3
Reference numeral 2 outputs an H level signal when the amount of change in the input accelerator opening is equal to or greater than a predetermined amount. For example, when the accelerator is suddenly depressed, the accelerator speed detection circuit 32 outputs an H level signal. Furthermore, the output of the accelerator speed detection circuit 32 is input to a timer circuit 33.
This timer circuit 33 outputs an H level signal for a predetermined period of time after receiving the H level signal. moreover,
The output of the timer circuit 33 is input to a solenoid drive circuit 34. This solenoid drive circuit 34
outputs a drive signal a to the front roll stopper 16 and a drive signal b to the rear roll stopper 17 shown in FIG. That is, when an H level signal is input to the solenoid drive circuit 34, the drive signals a and b become active, and each solenoid valve (not shown) in the front roll stopper 16 and rear roll stopper 17 is energized. Each rotary valve 24 rotates to close each first orifice 22.

Next, the operation of this device configured as described above will be explained. The amount of depression of the accelerator is detected by an accelerator opening sensor 31. Here, when the amount of change in the accelerator opening is smaller than a predetermined amount, the output of the accelerator speed detection circuit 32 becomes L level.
Therefore, the output of the timer circuit 33 becomes L level. Therefore, since the drive signals a and b output from the solenoid drive circuit 34 are not active, the electromagnetic valves (not shown) in the front roll stopper 16 and the rear roll stopper 17 are not energized. Therefore, when the amount of change in the accelerator opening is smaller than a predetermined amount, that is, when the accelerator depression is small, the front roll stopper 16 and the rear roll stopper 17 close to the first orifice 22.
The second orifice 23 is in an open state, and the damper function against the rolling motion of the engine 11 is soft, so that engine vibrations are effectively absorbed.

On the other hand, if the amount of change in the accelerator opening is larger than the predetermined amount, the output of the accelerator speed detection circuit 32 is H.
level. Therefore, the output of the timer circuit 33 remains at H level for a predetermined period of time. Therefore, the drive signals a, b output from the solenoid drive circuit 34
is active for a predetermined time, and the front roll stopper 16 and rear roll stopper 17
At this point, each electromagnetic valve (not shown) is energized and each rotary valve 24 rotates. In other words, when the accelerator is pressed heavily, the first orifice 22 is closed for a predetermined period of time to activate the roll stopper and harden the damper function for the engine to effectively prevent excessive rolling of the engine.

In the above embodiment, the connecting member 5 is connected to the engine 11, and one end of the separating member 21 is connected to the vehicle body via the bracket 7.
On the contrary, the connecting member 5 is placed on the vehicle body side, and the separating member 2
1 may be connected to the engine 11.

As detailed above, according to this invention, when the amount of change in the accelerator pedal depression, which is a state in which excessive engine rolling is likely to occur, is greater than a predetermined amount, the roll stopper is activated for a predetermined period of time to prevent excessive engine rolling. It is possible to provide a roll stopper control device that can efficiently prevent this.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the loading location of the engine in a FF vehicle, Figure 2 is a side view of Figure 1, Figure 3 is a diagram showing the basic principle of the roll stopper, and Figure 4 is an example of an embodiment of this invention. It is a figure showing a roll stopper control device. 32... Accelerator speed detection circuit, 33... Timer circuit, 34... Solenoid drive circuit.

Claims (1)

[Scope of utility model registration request] A separation member fixed to one of the vehicle body or the engine, two hollow casings each made of an elastic material and placed side by side with the separation member in between;
A liquid filled in the two casings, a mounting member for attaching at least one of the two casings to the other of the vehicle body or the engine, an orifice provided in the separation member that communicates the two casings, and an orifice that opens and closes the orifice. a valve, a solenoid that drives the valve, an accelerator speed detection means that outputs a detection signal when detecting that the amount of change in the accelerator pedal depression is equal to or greater than a predetermined amount; A roll stopper control device comprising: a solenoid drive circuit that drives the valve to close the orifice.