JP2001097209A - Operation method and device for constituent component in vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation method and device for at least one constituent component in a vehicle so that the generation of noise is reduced while keeping functionality. SOLUTION: In an operation of a constituent component, the level of generated noise is determined, the level(s) of a vehicular generated operation noise and/or ambient noise and/or internal space noise is (are) determined, and at least one operation variable affecting the vehicular operation noise and/or internal space noise and/or ambient noise is determined. The operation of the constituent component is carried out as a function of the generated operation noise and/or ambient noise and/or internal space noise and/or operation variable affecting those noises such that the noise of the constituent component is at least partially covered with the operation noise and/or ambient noise and/or internal space noise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method and a device for operating at least one component in a vehicle.

[0002]

2. Description of the Related Art German Patent Publication No. 195 48 248 proposes a method and a device for operating a pump of an electrohydraulic brake system. There, hydraulic fluid is supplied from an accumulator via a valve to a wheel brake cylinder, where the accumulator is filled by a pump. The pump is power-controlled and is operated in such a way that filling of the accumulator takes place with as little noise as possible. This takes place by means of a pulse pause ratio which can be set according to demand, in particular taking into account resonance effects and / or pressure in the accumulator. in this case,
The pump is operated at the minimum required power as a function of the situation in order to avoid strong noise generation.

[0003] DE-A-4 429 373 shows the operation of other components in the vehicle, in particular the solenoid valve of the braking device, which is likewise operated under settings which minimize the noise generated. Done in This means that in the usual switching from the first switching position to the second switching position, in particular to the passing direction, in the first step the current for operating the valve is set to the first for a settable time. From the first current value to a third current value according to the function of
In this process, the third current value is kept substantially constant, in which case the third current value is located above the second current value used to achieve the second switching position. Here too, a complicated method of limiting noise generation is shown.

[0004] The operation used for the same purpose, namely for noise reduction, is shown in DE-A-196088992. Here, in a power generator as a component part of the internal combustion engine, the generation of noise of the generator is reduced by reducing the exciting current under a specific situation. The excitation current is reduced by the control component, which determines the conditions for the reduction from the supply information or the stored information and outputs a corresponding operation signal. In this case, the generator temperature and the main body noise of the generator measured by the sensor are important. Again, very expensive methods are used to keep the generator noise emissions low.

It is clear that the prior art described above does not provide optimal results in every respect. On the other hand, extremely expensive operating and evaluation techniques are required to reduce the noise generation to the extent necessary and to retain the functionality of the individual components. Nevertheless, on the other hand, due to the noise reduction means, there is a loss of a part of the possible working range of the components contained in the vehicle. Some performance loss due to a compromise between the minimum required operation to maintain functionality and the most desirable operation for noise reduction cannot be prevented in the prior art.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and a device for operating at least one component in a vehicle, which reduces noise while maintaining functionality.

[0007]

The object of the present invention is to provide a method of operating at least one component in a vehicle, wherein the level of the noise generated in the operation of the component is determined, and furthermore the operating noise and / or the noise generated by the vehicle. Alternatively, the level of ambient noise and / or interior noise is determined, and the operation of the component is determined by the noise level of the component as a function of the generated operating noise and / or ambient noise and / or interior noise. This is achieved by the method of operating at least one component in a vehicle according to the invention, characterized in that it is at least partially superimposed by the level of ambient noise and / or internal space noise.

The above object is also achieved by a method of operating at least one component in a vehicle, wherein at least one operating variable of the vehicle is determined, in which case noise is generated in the operation of the component. And / or at least one operating variable affecting internal space noise and / or ambient noise is determined, and the components are:
As a function of at least one operating variable of the vehicle that affects the operating noise and / or the interior noise and / or the ambient noise of the vehicle, the component noise is at least due to the operating noise and / or the interior noise and / or the ambient noise. This is achieved by the method of operating at least one component in a vehicle according to the invention, which is operated so as to be partially covered.

[0009] The above object is further solved by at least one of the following:
A device comprising a control unit for the operation of one component and a first means for determining the level of noise generated by the operation of the component, further comprising other operating noise and / or ambient noise and And / or second means for determining a level of the interior space noise, and wherein the control unit converts the components to the operating noise and / or the ambient noise and / or the interior space noise determined by the second means. This is achieved by the device according to the invention, characterized in that these levels, as a function of the levels, are operated such that they at least partially overlap the component noise levels determined by the first means.

[0010] The object is also an apparatus comprising a control unit for operating at least one component in a vehicle, and first means for determining at least one operating variable of the vehicle, in which case The device wherein noise is generated in the operation of the component, wherein the first means comprises at least one operating variable that influences the operating noise and / or the interior space noise and / or the ambient noise of the vehicle, in particular the running speed and And / or determining the engine speed and the control unit configures the component as a function of at least one operating variable of the vehicle that affects the operating noise and / or the interior space noise and / or the ambient noise of the vehicle. Operate the component noise so that it is at least partially covered by operating noise and / or internal noise and / or ambient noise. Is achieved by the apparatus of the present invention, characterized in that.

The above object is further achieved in a control unit for operating at least one component in a vehicle, the control unit being coupled to first means for determining a level of noise generated by the operation of the component. The unit includes a means for comparing the level of noise, the control unit comprising:
The component as a function of the level of operating noise and / or ambient noise and / or interior space noise determined by the second means, the level of the component noise being determined by said first means; This is achieved by a control unit for operating at least one component in a vehicle according to the invention, characterized in that it operates at least partly over the vehicle.

The object is also a control unit for operating at least one component in a vehicle, which is coupled to a first means for determining at least one operating variable of the vehicle, In the control unit, wherein the noise is generated in the operation of the components, the first means may include at least one operating variable that affects the operating noise and / or the interior space noise and / or the ambient noise of the vehicle, in particular the running speed and And / or determining the engine speed and the control unit configures the component as a function of at least one operating variable of the vehicle that affects the operating noise and / or the interior space noise and / or the ambient noise of the vehicle. The component noise is at least partially covered by operating noise and / or interior noise and / or ambient noise. Manipulating achieved by the control unit for the operation of at least one component of the present invention, wherein.

Operating noise and / or ambient noise and / or
Alternatively, the method and the device according to the invention for operating at least one component in a vehicle in which internal space noises are generated may be such that the component is a function of this generated operating noise and / or ambient noise and / or internal space noise, and / or Alternatively, by operating as a function of at least one variable that influences the driving noise and / or the interior noise and / or the ambient noise of the vehicle, it has the advantage that a reduced functionality can be almost completely avoided. ing.

This allows the components to be operated within full functionality within the noise range for the above-mentioned noise types in which the noise generation of the individual components in the vehicle is hidden. This means that no noticeable additional noise is generated.

The method of operating components according to the invention as a function of at least one variable which influences the running noise and / or the running noise of the vehicle, in particular the running speed and / or the engine speed, makes it possible to describe the prior art. Such a complicated operation method may not be used. In this case, the running noise includes ambient noise and / or internal space noise of the vehicle.

At least one variable that influences the noise with which the component is operated as a function thereof is a function of the pump operation of the brake system, for example, the closed or open loop of the component, such as the running speed and / or the engine speed. Advantageously, it is not directly related to control. In this way, the operation as a function of the variables affecting the noise does not cause any effect on the functionality in the closed-loop or open-loop control of the original components, in particular no reduction in functionality.

The device and the method according to the invention can be used in certain brake systems, in particular in electro-hydraulic brake systems, for the operation of components therein, in particular at least one pump and / or at least one valve. It is advantageous.

Similarly, the apparatus and method described above may advantageously be used in a fuel supply system with respect to the components therein. In particular, a device with a fuel interim reservoir filled for pressure build-up allows the use of the method and the device with respect to pump operation.

However, all other components whose operation produces noise are also subject to the use of this method and the associated equipment, using very expensive operating methods with as little or as little performance loss as required. Rather, it is possible to operate such that the generated operating noise of each component is concealed within other noise having a higher level at each frequency, so that the noise generation of the component is not appreciable, especially in the interior space of the vehicle. Absent.

In this case, the noise used for concealment can be indicated by a variable measured by the sensor and / or by a variable that is related to or affects the noise generation. Is advantageous.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 shows a brake device, in particular an electro-hydraulic brake device, in which brake fluid is supplied from an accumulator 103 to a valve 1.
Wheel brake cylinders 112 through 11
5 is supplied. The accumulator 103 is filled by a pressure medium supply in the form of a pump 104. This filling should be done so as to produce as little noticeable noise as possible.

In the illustrated brake system, a brake pedal 100 is shown, and the brake pedal 100 is coupled to a master brake cylinder 102. It is possible to build pressure in the master brake cylinder 102 via the brake pedal 100. Master·
The brake cylinder 102 is in contact with the storage container 101. From the master brake cylinder 102 and the storage container 101, the piping for the pressure medium is
06. The brake device 106 comprises, depending on the embodiment of the brake device, valve means and possible pressure sensors, respectively, and in the case of electro-hydraulic brake devices a possible pedal stroke simulator, as well as the usual arrangements known from the prior art. Includes parts. Storage container 1
Pump 1 in the piping between the
A pressure medium supply means of the form 04 is shown. Code 10
5 shows a drive for operating a pump, for example in the form of an electric motor. An accumulator 103 is inserted between the pump 104 and the brake device 106. For example, reference numeral 116 here designates a valve means in the brake system between the storage container 101 and the wheel brake cylinder 115. Other valve means of the brake device 106 have been omitted for clarity. The brake device 106 is connected to the wheel brake cylinders 112 to 115 via a line for the pressure medium.
Open-loop or closed-loop control of the open-loop or closed-loop controllable components of the brake system is performed by the control unit
07. Exiting or entering control unit 107;
The connection line with the corresponding actuator device and / or sensor device is shown schematically as line bundle 111. In this case, only the operating line 108 for the pump motor 105 and the line 117 of the valve 116 are specifically shown. Reference numeral 109 designates another sensor device outside the brake device. Element 110 represents another possible control unit, which is coupled to the control unit 107 of the braking device. Via the sensor device 109, values such as, for example, vehicle speed and / or engine speed and / or ambient noise and / or driving noise and / or internal space noise are measured. However, similar information may be queried via another control unit 110 and transmitted to the control unit 107 of the braking device. Here, as a function of the value or noise thus measured,
The components of the brake device can be operated. in this case,
As an example, pump 1 operated via line 108
The pump motor 105 attached to 04, and thus the pump itself, as well as the valve means 116 shown as an example controlled via line 117 are selected.

In this case, the pump motor 105 is operated cyclically. In this case, the pulse pause ratio PPV on which the cycle of the pump 104 or the pump motor 105 is based is varied as a function of the vehicle noise and / or the ambient noise or at least one variable affecting them. Similarly, operation of the valve may be performed as a function of these. In this case, the brake device is intended, in particular, for a valve which, when operated, does not immediately lead to an undesired increase or decrease in brake pressure during driving, or if a change in brake pressure in the form of an increase or decrease is desired. All valves are eligible. For example, a linear valve,
If not only the open position and the closed position are available, but also a valve which can be used to set any open cross-section and thus any pressure medium flow, for example by pulse or cycle operation, the operation is described below. It can be performed like a pump operation.

FIG. 2 shows the operation of the pump in flow chart form. In this case, block 200 represents a control for adjusting the host logic or braking action on the device and / or a control for improving the stability and safety of the vehicle. This higher level logic 200 may be provided in the control unit 107 of FIG.
It may be provided in another higher-level control unit indicated by 0. Based on the execution in the upper logic 200, a pump request is output at block 201.
Based on the pump request in block 201, at block 202 at least one of the above-mentioned values or variables is determined or read. That is, values representing the vehicle operating noise and / or the ambient noise and / or the internal space noise or variables affecting these noises are read or determined. In certain embodiments, this is, for example, vehicle speed and / or engine speed. The determination of the variables takes place, for example, via the use of characteristic curves or characteristic curves. Next, as a function of at least one usage variable from block 202, block 2
At 03, a pulse width modulation signal operation is performed. The pulse pause ratio PPV on which this operation is based is varied as a function of the above variables. For a pump, this means that the higher the vehicle speed or, for example, in the case of an internal combustion engine, the engine speed, and the longer the pump can be pumped, the less the pulse pause ratio It means that the full operation and operation cycle time are higher towards the pulse time of 100%. It is advantageous that the setting of the PWM signal in consideration of noise does not have the highest priority. Therefore, in block 203, it is possible to set priorities in consideration of security. This is the case, for example, in the case of braking and / or driving stability control, which has a higher priority than possible reduced operation, taking into account noise under the same circumstances, for example, the full operation of the pump required as a function of the situation Means that it is possible to do Similarly, in block 203, possibly used time conditions or configurable operating cycle lengths of the pulse width modulated signal may be set.

Subsequently, in the inquiry 204,
It is checked whether the pump request from block 201 still exists. If this is the case, block 20 again
2, the current values of the operating noise and / or the interior noise and / or the ambient noise or their noise levels are read in or determined in block 202.

For example, the comparison means in the control unit 107 allow a check whether the level of the component noise and the operating noise and / or the ambient noise and / or the internal space noise can be superimposed.

If there is no longer any pump request, block 205 is reached where the pump is shut off. This means that, for example, a pulse / pulse pause ratio of 0
This is done by setting the% pulse time. Similarly, it is conceivable to run the pump for a further configurable time in block 205 as a function of the at least one variable read in block 202, for example to effect a pressure increase. After the pump has been switched off or has been operated for a configurable time period for the subsequent operation of the pump, block 200, the upper logic, is reached again, so that the pump is switched off for this purpose.

FIG. 3 shows the possible relationship between the pulse pause ratio PPVv as a function of the vehicle speed v and the vehicle speed v by means of a characteristic curve K1. Starting from the vehicle speed v0, the respective maximum possible pulse pause ratio PPV1 which is associated with noise and is taken into account is represented by a characteristic curve K1. This may be done, for example, in advance by experiment or by a learning system while driving the vehicle. Therefore, in the case of the minimum speed v0, PPV1
Is the associated maximum value of the pump operation, for which the pump noise can be hidden in the normal noise, and in this case the start value P for the pulse pause ratio
It has the same meaning as PVs1. Here, the pulse pause ratio PPVv can increase as a function of the characteristic curve K1 with an increase in the speed v, which is associated with an increase in noise generation. This is the final value PPVve1 for the pulse pause ratio.
Until it is reached. This may be a configurable closing value or a full operation of the pump with a pulse pause ratio of 100% pulse time. The ancillary speed at which this full operation noise can be hidden in normal noise is v1. After this speed v1, the pump can be operated with a configurable pulse pause ratio PPVve1 without the pump operating noise being unpleasantly sensed or recognized.

As in the characteristic curve K1 for the vehicle speed, in FIG. 4 a characteristic curve K2 showing the pulse pause ratio PPVn as a function of the engine speed against the engine speed can be evaluated for operation. is there. In this case, the pulse pause ratio PPV2 is set for the minimum rotation speed n0, particularly 0. This corresponds to the start value PPVs2 for the pulse pause ratio for a particular case. The increase in the engine speed n further increases the pulse pause ratio P
It is possible to increase the PV, so that the pump noise can always be hidden in the measurable engine noise which is related to the engine speed. Here, this pulse pause ratio increases to a certain engine speed n1, as shown by the characteristic curve K2. At the engine rotation speed n1, the pulse pause ratio reaches the final value PPVe2. This closing price is
Configurable closing price, or 10
It may be a full operation with a 0% pulse time ratio.
Thus, after the engine speed n1, the pump can be operated at the closing value PPVe2 for the pulse / pulse pause ratio without the noise generated thereby being unpleasantly perceived or perceived.

In another embodiment, the pulse pause ratio is
From several variables, such as vehicle speed and engine speed,
It may be determined in combination and set. In this case, the pulse pause ratio PPVv given from the vehicle speed v
Is represented by a characteristic curve K1. Similarly, the pulse pause ratio PPVn given from the engine speed n of the internal combustion engine is represented by a characteristic curve K2. Subsequently, the maximum of both these pulse pause ratios PPVv and PPVn at each time point is used as the composite pulse pause ratio PPV for operation of the pump motor. in this case,
Again, care should be taken in setting priorities that take safety into account. This is due to the higher pulse pause ratio P for safety reasons.
When a PV is required, it means that it can be set independently of noise generation. In addition to the maximum value formation, for example, the average value formation of both pulse pause ratios for the characteristic curves K1 and K2 measured at that time is also conceivable. In this case, other combinations of the individual pulse pause ratios are also conceivable. However, in the case of maximum formation, the cycle time of the cycle operation will probably be smaller than the post-run time constant of the pump motor.

In general, the operation of the pump to be performed is, for example, at higher speeds or higher engine speeds.
It will be less than possible operation from a noise standpoint.
Thus, the present invention allows full utilization of the performance of notable components, such as pumps, without ignoring the noise perspective.

[0032] Instead of or in addition to the adaptation of the pulse pause ratio described above, the frequency of the operating signal itself as well as the function of the generated ambient noise and / or the interior space noise and / or the operating noise of the vehicle and And / or may be varied as a function of variables affecting these noises.

A similar operation taking into account, for example, the vehicle speed or the engine speed is effected via the operating line 117 through the valve means 1.
16 is also conceivable. Therefore, no means for noise reduction in valve operation performed as a function of other noise, as is known from the prior art, is necessary.

The same applies to other motor components in the vehicle, such as, for example, fuel pumps, vehicle generators, electric motors, and other components of the vehicle, such as air conditioners or cooling pumps.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a brake device of a general type.

FIG. 2 is a flowchart showing the operation of a pressure supply unit and / or a valve unit of the brake device.

FIG. 3 is a diagram showing the operation of pressure supply means and / or valve means as a function of vehicle speed.

FIG. 4 is a diagram showing the operation of pressure supply means and / or valve means as a function of engine speed n.

[Explanation of symbols]

REFERENCE SIGNS LIST 100 brake pedal 101 storage container 102 master brake cylinder 103 accumulator 104 pump 105 pump motor 106 brake device 107 control unit 108, 117 line 109 external sensor device 110 other control unit 111 line bundle 112, 113, 114, 115 Wheel brake cylinder 116 Valve K1, K2 Characteristic curve n Engine speed PPV pulse pause ratio PPV1, PPV2 Maximum possible pulse pause ratio for pump operation PPVe1, PPVe2 Final value of pulse pause ratio PPVn Pulse pause ratio as a function of engine speed PPVs1, PPVs2 Start values for pulse pause ratio PPVv Pulse pause ratio as a function of vehicle speed v Vehicle speed (running speed)

Claims (10)

[Claims] 1. A method for operating at least one component in a vehicle, wherein the level of noise generated in the operation of the component is determined, further comprising the generated operating noise and / or the ambient noise and / or the internal space of the vehicle. The level of the noise is determined, and the operation of the component is determined as a function of the generated operating noise and / or the ambient noise and / or the internal space noise. A method of operating at least one component in a vehicle, wherein the method is performed so as to be at least partially overlapped with a noise level. 2. A method for operating at least one component in a vehicle, wherein at least one operating variable of the vehicle is determined, wherein noise is generated in the operation of the component. At least one operating variable that influences ambient noise and / or ambient noise is determined and the component is configured to determine at least one operating variable of the vehicle that affects operating noise of the vehicle and / or internal spatial noise and / or ambient noise. Operating the at least one component in the vehicle, such that the noise of the component is at least partially covered by the operating noise and / or the interior noise and / or the ambient noise as a function of . 3. The component according to claim 1, wherein the component is operated such that the noise of the component is covered within the audible range by operating noise and / or ambient noise and / or internal space noise. Method. 4. The method according to claim 1, wherein the operation of the at least one component corresponds to the operation of a pump. 5. The method according to claim 1, wherein the actuation of the at least one component corresponds to the actuation of a pressure medium supply means in the brake device, in particular in an electrohydraulic brake device. 6. The method according to claim 1, wherein the variables affecting the internal space noise and / or the operating noise and / or the ambient noise of the vehicle are a vehicle engine speed and / or a vehicle running speed. 7. An apparatus comprising: a control unit for operating at least one component in a vehicle; and first means for determining a level of noise generated by operating the component. A second means for determining a level of another operating noise and / or an ambient noise and / or an internal space noise, wherein the control unit converts the components to the operating noise and / or the determined by the second means. Ambient noise and / or
Alternatively, as a function of the level of internal space noise, the device is operated such that these levels at least partially overlap the component noise level determined by the first means. 8. A device comprising: a control unit for operating at least one component in a vehicle; and first means for determining at least one operating variable of the vehicle, the device comprising:
In this case, in the device in which noise is generated in the operation of the component, the first means may include at least one driving variable that affects driving noise and / or internal space noise and / or ambient noise of the vehicle, in particular driving. Determining a speed and / or an engine speed, wherein the control unit converts the components as a function of at least one operating variable of the vehicle that affects the operating noise and / or the interior space noise and / or the ambient noise of the vehicle; An apparatus characterized in that it operates such that the noise of the components is at least partially covered by operating noise and / or internal noise and / or ambient noise. 9. A control unit for operating at least one component in a vehicle, the control unit being coupled to a first means for determining a level of noise generated by the operation of the component, wherein the control unit comprises: Means for comparing the levels of said components as a function of the level of operating noise and / or ambient noise and / or internal space noise determined by the second means. A control unit for operating at least one component in a vehicle, wherein the control unit is operated so as to at least partially overlap a noise level of the component determined by the first means. 10. A control unit for operating at least one component in a vehicle, the control unit being coupled to a first means for determining at least one operating variable of the vehicle, wherein the control unit comprises In the control unit, wherein noise is generated in operation, the first means may include at least one operating variable that affects the operating noise and / or the interior space noise and / or the ambient noise of the vehicle, in particular the running speed and / or the engine Determining a rotational speed, wherein the control unit determines the component noise as a function of at least one operating variable of the vehicle that affects the vehicle operating noise and / or interior space noise and / or ambient noise; In particular, the operation is performed so that it is at least partially covered by the operation noise and / or the internal space noise and / or the ambient noise. Control unit for at least one component of the operation that.