WO2019025243A1

WO2019025243A1 - Intelligent recirculation mode

Info

Publication number: WO2019025243A1
Application number: PCT/EP2018/070048
Authority: WO
Inventors: Alexander Bunzl; Stefan Oberberger
Original assignee: Bayerische Motoren Werke Aktiengesellschaft
Priority date: 2017-08-01
Filing date: 2018-07-24
Publication date: 2019-02-07
Also published as: DE102017213279A1

Abstract

The invention relates to a method for situational fresh air supply, preferably in a car. According to the invention, it is possible to adapt both the time and the supply parameters depending on the situation. The present invention further relates to a correspondingly designed system arrangement. Furthermore, a computer program product is proposed, having control commands which implement the method or operate the proposed system arrangement.

Description

Intelligent recirculation mode

The invention relates to a method for situation-dependent supply of fresh air, preferably in an automobile. According to the invention, it is possible, depending on the situation, to adapt both the time and the feed parameters. Furthermore, the present invention relates to a suitably established system arrangement. In addition, a computer program product with control commands is proposed which implement the method or operate the proposed system arrangement.

DE 10 355 824 A1 shows a ventilation device for an interior of a motor vehicle, which is switchable via a control unit between a supply and a recirculation mode, the control unit in the presence of a start signal of the motor vehicle, the ventilation device in the recirculation mode and upon reaching a time threshold value in the supply air on.

DE 40 34 607 A1 shows a method for protecting the interior of a

Motor vehicle before located outside the same exhaust gases, with which the fresh air supply to the interior is interrupted by closing the openings provided therefor, wherein the openings for the fresh air supply in dependence on the speed of the vehicle and / or of the

Exhaust gas concentration of the air passing through the openings automatically

closed and reopened.

DE 10 2014 214 164 A1 shows a method for air conditioning an interior of a motor vehicle, wherein a recirculating air operation of an air conditioning device at intervals over time by intervals of a fresh air operation of

Air conditioning device is interrupted, wherein for the beginning of each next fresh air operation Interval! Timeslot is given and the

Time of the actual beginning of the fresh air operation interval is determined in dependence on a measured and / or a predicted speed of the motor vehicle within the time window. DE 199 00 896 A1 shows a method for heating rooms by means of a combined heating and ventilation system with fuel-operated

Heaters, with means for supplying outside air into the room interior and for discharging outside air. In recirculation mode (manual or automatic recirculation mode), a period of time is cyclically set after a specified period of time that can not be influenced by the driver

Fresh air rinse (= outside air) of the interior, to avoid an excessive C02 concentration in the vehicle interior.

Due to the fixed rinsing intervals, rinsing with outside air can take place at a time at which the odor and / or pollutant concentration (in particular exhaust gases) is particularly high. This can e.g. in certain places (for example tunnels, underground car parks) and / or situation (traffic jams, etc.) of the route.

It is disadvantageous that, according to the state of the art, it is only possible to react to an odor and / or pollutant concentration as soon as it already has an effect on the interior air of the vehicle. This is disadvantageous for the vehicle occupants, since here already to some extent contaminated outside air has flowed into the vehicle.

It is therefore an object of the present invention to provide an improved and in particular anticipatory method for fresh air supply or for

Fresh air flushing of an interior of a motor vehicle, preferably one

Automobile, to propose. Furthermore, it is an object of the present invention to provide a suitably arranged system arrangement and to propose a computer program product with control commands, which the

Implement method or at least partially operate the proposed system arrangement.

The object is achieved by a method with the features according to

Claim 1. Further advantageous embodiments are in the

Subclaims specified. Accordingly, a method for situational fresh air supply of an interior of a motor vehicle in dependence on route parameters

proposed, comprising providing a time of a planned fresh air supply, wherein a determination of route parameters that relate to a location at which the motor vehicle is expected to be

is provided and a run of the fresh air supply in

Dependency of the specific route parameters.

The route parameters can give an indication of an air quality. Air quality in the context of the present invention refers to CO 2, particulate matter, pollution, and / or other parameters that may in any way adversely affect a driver. For this purpose, corresponding sensors are known which detect these values. For this purpose, several sensors can be wired or read by means of an air interface. In particular, these values can also be estimated.

The proposed method is situation-dependent insofar as a situation with regard to air parameters is evaluated in a forward-looking manner and the supply of fresh air is planned in a forward-looking manner. Thus, not only the current parameters of the immediate environment of the motor vehicle are taken into account, but rather it can be determined, for example by means of a route planning, where the car is expected to be at a given time. This does not require a navigation system, but rather it is enough, the

Predicting the course of the road and the expected speed

extrapolate. By means of this information, conclusions can be drawn as to where the motor vehicle is expected to be at what time.

For example, several routes can be taken into account and corresponding route parameters can be read out. If, for example, there are two options where the motor vehicle can drive along, then the worse situation is taken into account. Follows on a route a section of the route with poor air conditions so according to the invention still a fresh air supply can be performed at short notice. It is particularly preferred according to the invention a Route planning of a navigation device to read and determine when a fresh air supply is most advantageous. Corresponding route parameters can be stored, for example, electronically locally or remotely. For example, digital road maps can have corresponding parameters or these parameters can be derived. For example, according to

Conventional methods recognized that a congestion is imminent, from which it can be deduced that prevail here bad air conditions prevail. Then, then, depending on this congestion, the fresh air supply

be planned according to the invention. Also, by means of conventional

Navigation devices situations are detected where a fresh air supply is inappropriate. This may be, for example, an intersection or a tunnel. Thus, the fresh air supply can be performed either before the appropriate situation or after this situation. It is advantageous to recognize how long such a detrimental situation persists. If a long traffic jam is imminent, then in accordance with one aspect of the present invention it is urgent to carry out a fresh air supply beforehand.

A fresh air supply is generally the feeding of a vehicle outside air into the passenger compartment. This is done by means of conventional

Air conditioners or blowers accomplished, which according to the invention

be addressed. Thus, a supply of fresh air may generally be termed airing. Typically, the fresh air supply refers to an existing vehicle ventilation by means of a blower.

The provision of a time point of a planned supply of fresh air in accordance with an aspect of the present invention is carried out in such a way that preset values for this purpose are provided

Intervals are read out after which a fresh air supply must be started. These intervals can then be varied according to the invention. It is also possible to read out further sensors which give an indication of a planned supply of fresh air. So it is necessary, for example, at hot temperatures often a fresh air supply to perform, as in cold seasons. In general, conventional methods can be extended in such a way that conventional methods determine the time of a fresh air supply and thereby is checked according to the invention, if this point in time is actually suitable. Thus, the planned time is moved forward or behind schedule.

Based on a route planning can be calculated according to an aspect of the present invention, at what time the motor vehicle is where. In this case, further sensors can be read, such as

Speed sensors. It is also possible to plan a route

Navigation device or to simply analyze the further course of the road. Also, a previous route can be analyzed and thus closed on a driving style. This makes it possible to estimate whether the planned time of a planned fresh air intake makes sense or not. If, for example, it is calculated that a fresh air supply is to be carried out in one minute and it is recognized that a construction site is following in one minute, then a corresponding fresh air supply can be started immediately or, for example, in two minutes, when the construction site is over. The execution of the fresh air supply can be so depending on the determined

Route parameters take place so that the time of the planned fresh air supply is varied or the duration or intensity of the fresh air supply is adjusted. For example, if outside air conditions are unfavorable, then the fresh air supply can be carried out such that it is started at a later time. For example, if it is not foreseeable that the air parameters will improve, then a low intensity of a circulating air can be set. It is also possible to use short temporal phases in which a fresh air supply is possible. If, for example, several tunnels lie on a route, short distances between the individual tunnels can be used to supply fresh air. In the tunnel itself can therefore be dispensed with the supply of fresh air, as this would set a poor air quality.

The present invention has the advantage that it can be combined, for example, with conventional navigation devices or with a

Driver assistance system can be connected. Thus, according to the invention, conventional route parameters can be interpreted such that they provide an indication of suitable fresh air conditions. Thus, that's how it works to implement proposed methods by means of control commands, which in

Board system of a motor vehicle are recorded. Thus, according to the invention, a fresh air supply can be carried out fully automatically, which always ensures that the air quality in the vehicle interior is optimal. Generally, the present invention is directed both to electric vehicles and to vehicles with internal combustion engines. In this respect, general

Motor vehicles further developed according to the invention. As a motor vehicle here is generally any motor vehicle in question, especially an automobile. Here, the skilled artisan recognizes that existing components such as a

Can be reused ventilation system according to one aspect of the present invention and according to the invention can be addressed particularly advantageous. Furthermore, the present invention can be combined with other components, e.g. be communicatively coupled to a driver assistance system.

The rinsing cycles of the fresh air supply should be made variable depending on the location and / or the traffic situation in which the vehicle is in motion. For this purpose, an existing navigation system in the vehicle can be used. This can be permanently installed in the vehicle, or be an external device that is connected via a data interface with the vehicle. In this way, places (e.g., tunnels, intersections, etc.) and / or

Traffic situations (for example, traffic jam detection, sections with currently increased traffic density, etc.) are detected. In these areas, flushing with outside air is not performed. Outside air purging is done intelligently, i.e., in accordance with one aspect of the present invention. the conditioner is either brought forward and / or delayed with the target in the o.g. Track sections the

Rinse vehicle interior.

Thus, according to one aspect of the present invention, the risk of an outdoor air purge decreasing at an inconvenient time (high

Pollutant concentration in the outside air) takes place. By using a

Navigation system, the invention can be implemented inexpensively, ie purely software. In one aspect of the present invention, route parameters are static or dynamic. This has the advantage that consideration can be given both to structural conditions and to dynamically occurring ones

Traffic situations. In particular, the combination of the two approaches is advantageous because, for example, intersections can be taken into account in which

typically congestion prevails.

According to another aspect of the present invention describe

Route parameters a location and / or a traffic situation. This has the advantage that parameters can be taken into account that identify a specific location as generally unsuitable for a fresh air supply or an unfavorable traffic situation such as a traffic jam. As a location, an inner city area can be stored, which is considered unsuitable for a fresh air supply in a probable leaving this area. If it is recognized that a departure from the busy inner city area is imminent, the

Fresh air supply are delayed. Is recognized that driving on the

Downtown area is approaching, so the fresh air supply can be brought forward.

According to another aspect of the present invention describe

Route parameters at least one tunnel, a road intersection, a

Traffic situation, a traffic jam, a stretch of road with increased traffic density and / or a construction site. This has the advantage that, for example, in a tunnel always poor air conditions are avoided with respect to the supply of fresh air and is ventilated accordingly before or after. Road crossings, traffic jams, sections with increased traffic density and construction sites point

typically poor air quality, so also according to the invention according to before or after airing.

According to another aspect of the present invention, there is no supply of fresh air in the presence of specifiable route parameters. This has the advantage that exclusion criteria can be specified by the manufacturer or dynamically by the driver to prevent a supply of fresh air. For example, the driver can mark a location in a digital map at the not to be ventilated. It is also possible to enter threshold values which describe from which traffic volume onwards traffic should no longer be released.

According to another aspect of the present invention, if there are any route parameters that can be specified, the time is scheduled

Fresh air supply changed. This has the advantage of being proactive

Fresh air supply can be planned and this can be adapted to actually prevailing parameters.

According to a further aspect of the present invention, its time is changed depending on an expected duration of a fresh air supply. This has the advantage that it can be checked whether a started fresh air supply can actually be completed under suitable route parameters. Thus, the expected duration of a fresh air supply can be stored and checked whether there are good air conditions over the entire duration. To ensure this, the start time of the fresh air supply can be set accordingly.

According to a further aspect of the present invention, the duration of the fresh air supply is changed depending on the route parameter. This has the advantage that the duration of the fresh air supply can be varied so that there are always suitable conditions. If a fresh air supply is required but the air conditions deteriorate soon, it can still be at least briefly aired. If the air conditions remain good, it can be ventilated longer. Thus, according to the invention, the intensity of the fan can be adjusted. For a short duration, you can ventilate intensively to take advantage of the most suitable air conditions. With a long duration, the intensity and thus the volume of the ventilation can be reduced.

The object is also achieved by a system arrangement for

Situationally dependent fresh air supply of an interior of a motor vehicle as a function of route parameters, comprising means arranged for

Providing a time of planned fresh air supply, wherein means are provided for determining route parameters that are based on refer to a place where the car is expected to be at the scheduled time and middle! adapted to carry out the supply of fresh air depending on the particular route parameters.

The proposed means may be present as devices that are partly present in conventional vehicles, but are addressed according to the invention in a particularly advantageous manner. In particular, in this case there may be means which indicate when a fresh air supply is necessary. The means may also be present as a driver assistance system, which causes an execution of control commands that implement the method steps. The task is also solved by a computer program product

Control commands that perform the method and the proposed

Arrangement when executed on a computer.

The computer program product can be combined with further control commands and integrated by means of an interface in a control electronics of a vehicle. Furthermore, the computer program product can at least partially resort to control commands and / or route parameters which are provided remotely. Thus, a traffic situation of other vehicles or data services can be detected and the vehicle, which is adapted according to the invention, be provided by means of route parameters by means of an air interface.

According to the invention, it is particularly advantageous that the method for operating the proposed system arrangement together with its units can be used. Furthermore, the system arrangement is suitable together with their units for

Execution of the method according to the invention. Thus, each device implements structural features that are appropriate, the corresponding one

Perform procedure. However, the structural features may also be considered

Process steps are designed. Also, the proposed method provides steps to implement the function of the structural features. Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, aspects of the invention are described in detail. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination. Likewise, the features mentioned above and further explained here can be used individually or in combination in any combination. The embodiments shown and described are not to be understood as exhaustive, but have exemplary character for explaining the invention. The detailed description is for the information of the person skilled in the art, therefore, in the description of known circuits, structures and methods are not shown or explained in detail in order not to complicate the understanding of the present description. In the figure shows:

Figure 1: a schematic flow diagram of a method for

Situationally dependent fresh air supply of an interior of a

Motor vehicle according to one aspect of the present invention.

FIG. 1 shows a schematic flow diagram of a method for

Situationally dependent fresh air supply of an interior of a motor vehicle as a function of route parameters, comprising providing 100 a time point of a planned fresh air supply, wherein a determining 101 of

Route parameters that refer to a place where the

Motor vehicle is expected to be at the provided 100 point in time and running 102 of the fresh air supply in dependence of the particular 101

Route parameters. The skilled artisan recognizes that the steps more

Sub-steps may have and in particular that the process steps can be carried out in each case iteratively and / or in a different order.

Not shown in the present case is a data memory or a computer-readable medium with a computer program product having control commands which implement the proposed method or the proposed method

System arrangement when they are brought on a computer to run. The computer program product according to the invention with a existing system are implemented such that the provision of a time point of a planned fresh air supply is implemented by an existing system. According to the invention, then, a determination or derivation of route parameters relating to a location at which the motor vehicle is expected to be at the time provided and an execution of the fresh air supply as a function of the determined route parameters. Derivation here means that conventional route parameters are interpreted in such a way that they provide an indication of air quality. Thus, traffic jams or tunnels can be conventionally recognized and, according to the invention, route parameters can be assigned to such route parameters, which are taken into account for carrying out the planned supply of fresh air.

Claims

claims

1. A method for situational fresh air supply of an interior of a motor vehicle as a function of route parameters, comprising:

- Providing (100) a time point of a planned fresh air supply, characterized by

- determining (101) route parameters relating to a location at which the motor vehicle is expected to be at the provided (100) time; and

- Performing (102) the fresh air supply in dependence of the particular (101) route parameters.

2. The method according to claim 1, characterized in that route parameters are static or dynamic.

3. The method according to claim 1 or 2, characterized in that

Route parameters describe a location and / or a traffic situation.

4. The method according to any one of the preceding claims, characterized in that route parameters describe at least one tunnel, a road intersection, a traffic situation, a traffic jam, a stretch of road with increased traffic density and / or a construction site.

5. The method according to any one of the preceding claims, characterized in that in the presence of specifiable route parameters no

Fresh air is supplied.

6. The method according to any one of the preceding claims, characterized in that the time of a planned supply of fresh air is changed in the presence of specifiable route parameters.

7. The method according to any one of the preceding claims, characterized in that depending on an expected duration of a fresh air supply whose time is changed.

8. The method according to any one of the preceding claims, characterized in that the duration of the fresh air supply is changed depending on the route parameter.

9. System arrangement for situation-dependent fresh air supply of an interior of a motor vehicle as a function of route parameters, comprising:

Means adapted to provide (100) a time point of a planned supply of fresh air, characterized in that

- means are provided for determining (101) route parameters relating to a location at which the motor vehicle is expected to be at the provided (100) point in time; and

- Means are arranged for carrying out (102) of the fresh air supply in dependence of the particular (101) route parameters are provided.

10. Computer program product with control commands, which perform the method according to one of claims 1 to 8, when used on a computer for

Execution be brought.