WO2007039567A1

WO2007039567A1 - Motor vehicle system comprising a navigation system and a motor control appliance

Info

Publication number: WO2007039567A1
Application number: PCT/EP2006/066904
Authority: WO
Inventors: Karl Artmann; Clemens Fuchs; Rainer Pichler; Peter Rietzler
Original assignee: Siemens Vdo Automotive Ag
Priority date: 2005-10-04
Filing date: 2006-09-29
Publication date: 2007-04-12
Also published as: DE102005047513A1

Abstract

The invention relates to a motor vehicle system comprising a navigation system (1) and a motor control appliance (10). According to the invention, the motor control appliance (10) is embodied in such a way as to process data provided by the navigation system (1), said data containing map data, information relating to the surroundings of the motor vehicle and/or traffic data. In this way, the motor control appliance (10) can be controlled in an optimum manner, taking into account the information relating to the surroundings of the motor vehicle. A hybrid drive comprising an internal combustion engine (12) and an electric motor (13) can be controlled by means of said motor control appliance (10).

Description

Motor vehicle system with a navigation system and an engine control unit

The invention relates to a motor vehicle system with a navigation system and an engine control unit.

Navigation systems have increasingly found their way into motor vehicles. The navigation systems are designed or generally as intrinsically ^¬ permanent devices linked to other information and / or entertainment systems. After entering a destination, the navigation system calculates a route from the current vehicle position to the destination. Subsequently, route guidance information is output. To calculate the route route map data are used, which are carried in the vehicle or transmitted via a radio link from a central computer in the vehicle.

By means of an engine control unit, an engine of the motor driving ^¬ zeugs is driven. In the case of an internal combustion engine, the amount of injected fuel, the time of injection or the number of partial injections are determined here, for example for an injection system.

From EP 1505555 Al is known to supply it to a Fahrgeschwindig ^¬ keitsregler setpoints from a navigation system. The control signal of the vehicle speed controller is then fed ei ^¬ nem engine control unit to keep constant the speed of the motor vehicle. In such a system, the navigation system Sys ^¬ influenced by means of a default value ^¬ via the cruise control, the engine control unit. In such a system, the information present in a navigation system is used only to a very small extent for the engine control. The object of the invention is therefore to further develop a motor vehicle system with a navigation system and an engine control unit such that information present in the navigation system is better used for engine management and the decision on the use of this information is made by the engine control unit.

The object is achieved by a motor vehicle system having the feature of claim 1.

The motor vehicle system thus consists of a navigation ^¬ system and an engine control unit, wherein the engine control unit is designed for processing data that are provided by the navigation system. The data provided by the navigation system include map data, such as, in particular, an expected route, and / or information about an environment of the motor vehicle and / or traffic data. The engine control unit can now customize the engine control based on the data provided. The data provided, for example, contain information as to whether the motor vehicle is in town or on the highway moving, whether the vehicle is running through a wooded area, whether it is on a country road, whether the vehicle is in an over ^¬ Gigen environment with many inclines and declines determines whether there is a traffic jam on the route ahead and the like. In addition, information Ü be as provided ^¬ as curve radii over the road. The engine control unit can then carry out the optimum control of the engine for the respective environment on the basis of the data provided. This applies in ^¬ play, the number of partial injections or injection timing. The decision as to how the data provided by the navigation system influences the engine control is thereby made by the engine control unit, wherein also other data not provided by the navigation system but by other sensors are taken into account. If the data from the navigation system independently of the calculation of a route and / or an output of route guidance information provided, the Motorsteuerge ^¬ can advise on the data and then access if no destination has been entered by the driver or not route guidance is desired. This may for example be the case when the vehicle moves exclusively in an area that is sufficiently known to the driver. In this case, ver ^¬ the driver waived frequently on the support of the navigation system if. However, since data are also made available to the engine control unit in this case by the navigation system, the advantages of the invention can be used independently of a route guidance by the navigation system.

The engine control unit can detailed navigation data Ü about the immediate surroundings of the motor vehicle for Availability checked ^¬ made supply. Here it is necessary to determine the aktuel ^¬ len location of the vehicle. The current location of the vehicle can be determined in particular by Satelli ^¬ surfactant-and / or dead reckoning, as been known of navigation systems. In particular, relevant navigation data are selected from the available data material of the navigation system.

In addition, upon focusing the information selection on the vehicle environment, the navigation system may dynamically determine the likely route of the motor vehicle and transmit it to the engine control unit.

A vehicle bus system can thus be used to select up-to-date information about the current position, driving conditions, details of the urban or rural environment, including the course of the road and the height profile, and to distribute them in a targeted manner to the engine control unit. If the engine control unit is a motor control ^{device of} an internal combustion engine, it can be optimally adapted to the respective ambient conditions. In particular, fuel-saving engine control data can be selected or determined by the engine control unit, taking into account the data received from the navigation system.

Furthermore, engine control data can be selected or determined by the engine control unit, which take into account both the data received from the navigation system and exhaust gas emission data of the internal combustion engine. For example, an adjustment of the engine according to different emission guidelines, such as Euro 4 and Euro 5, take place. The motor vehicle system can furthermore be advantageously used to control a hybrid drive with at least two drive ^sources , in particular with an internal combustion engine and an electric motor. The management of the two drive sources and their use for driving the vehicle can thus be optimized on the basis of the data provided by the navigation system. In particular, the Mo ^¬ torsteuergerät then at a decision for supplying Bezie ^¬ hung as disconnection of the electric motor as an additional driving source to ^¬ next to the internal combustion engine for taking into account the data provided by the navigation system designed. Furthermore, in this case, the engine control unit can also be designed in a decision to select the drive source to take account of the data provided by the navigation system. Thus, for example, based on the data provided by the navigation system about the environment of the vehicle can be decided that when operating the vehicle in a city area excluding ^¬ electric motor is used, while in a Be ^{¬ operation of} the motor vehicle outside closed towns exclusively the engine is used. If, however, transmitted by the navigation system that a route is driven on a steep slope, so that can Vehicle combined with the internal combustion engine and the Elekt ^¬ romotor be operated. The decision is made by the engine control unit based on the data provided by the navigation system using a suitable program.

An engine control unit for use in a motor vehicle system according to the invention has an interface to a navigation system and is designed for processing data obtained via the interface via the navigation system, the data including map data, information about an environment of the motor vehicle and / or traffic data.

A navigation system for use in an inventive motor vehicle system has an interface to a Mo ^¬ torsteuergerät and is adapted for providing data to the engine control unit and the data Landkartenda ^¬ th, contain information about an environment of the motor vehicle and / or traffic data.

The interface may in particular be an interface to a motor vehicle ^{bus system} .

The invention will be explained in more detail with reference to an exemplary embodiment with the drawing. Show it:

Figure 1: a first embodiment of an inventive

Automotive Systems

Figure 2: a second embodiment of a motor vehicle system according to the invention.

1 shows a first embodiment of invention ^shown SEN motor vehicle system with a navigation system 1 and an engine control unit 10. The central component of the navigation Systems 1, the arithmetic unit 11, which also contains the erfor ^¬ sary storage elements. An operating unit 2 is connected to the arithmetic unit 11. Via the control unit 2 For example, a destination is entered or out ^¬ be selected. With the arithmetic unit 11, an op ^¬ tables output unit 3 is further connected, via which a Kartendar ^¬ position and guidance information and other information can be output. The route guidance information can furthermore be output acoustically via a loudspeaker 4.

The arithmetic unit 11 is further connected to a database 5 which contains the map data. This data is stored, for example, on a CD-ROM or a DVD.

To determine the current vehicle position, the navigation system further includes a receiver 6 for receiving satellite navigation signals. In order to be able to carry out a positioning independent of satellites, the navigation system furthermore contains a direction sensor 7 and a displacement sensor 8, which are likewise connected to the arithmetic unit 11. Furthermore, in the exemplary embodiment, the arithmetic unit 11 is connected to a radio receiver 9, which is designed to receive RDS-TMC signals. Thus, received traffic information can be forwarded from the radio receiver 9 to the arithmetic unit 11. Alternatively, traffic information can also be received via a mobile radio device, in particular according to the GSM standard, and forwarded to the computing unit 11. Deviating from the navigation system shown, the map data can also be transmitted via a mobile device from a central service point in the Fahr ^¬ tool. Corresponding navigation systems are known in principle.

The navigation system 1 is also designed to provide data about the environment independently of a calculated route. For this purpose, the current position of the motor vehicle is determined and the map data is evaluated up to a certain distance from the current location. Such a map section can, for example, wise provided directly via an interface 14 who ^¬ . Furthermore, the navigation system can also directly evaluate the map data in the vicinity of the current vehicle position and thus determine, for example, whether the vehicle is located within a town, in hilly terrain, or on a motorway. This information can also be provided via the interface 14.

Via the interface 14, an engine control unit 10 is connected to the navigation system 1. The data provided by the navigation system 1 are processed by the engine control unit 10 and taken into account in the control of an internal combustion engine 12. Thus, the exhaust gases Missio ^¬ example, NEN depending on the current position of the motor vehicle are controlled. For example, if the vehicle is in an urban area where full engine power is not required, the performance of the engine 12 may be adjusted to lowest exhaust emissions. If it is determined, however, is that the vehicle au- ßerhalb of an urban area is where a high engine output is required, so a correspondingly geän ^¬-made motor drive of the engine 12 can take place. For example, different emission guidelines, such as Euro 4 or Euro 5, depending on the environment of the vehicle can be adhered to in this way.

Figure 2 shows a second embodiment in which the engine control unit 10 is in turn connected via an interface 14 with a navigation system 1, wherein the previously mentioned data are provided by the navigation system 1. In contrast to the embodiment according to Figure 1, the engine control unit 10 is now for the on ^¬ control of a hybrid drive with an internal combustion engine 12 and an electric motor 13 designed. The control of the internal combustion engine can be carried out as described in the first embodiment. Depending on the detected via the navigation system 1 is available data, the engine control unit 10 can now ^¬ example, also the electric motor 13 also increases or to the internal combustion engine 12 as a driving source off. In this decision, the engine control unit 10 takes into account, in particular, information about the surroundings of the vehicle, which are made available by the navigation system 1.

Furthermore, the engine control unit 10 only the

Combustion engine 12 or only the electric motor 13 to drive the motor vehicle select. Also in this case, the decision as to whether the drive of the motor vehicle is to take place via the internal combustion engine 12 or the electric motor 13 can be made on the basis of data provided by the navigation system 1. If, for example, it is determined based on the data of the navigation system 1 that the vehicle is located in an urban area, the electric motor 13 can be selected as the sole drive source for the motor vehicle. In the extra-urban area, the internal combustion engine 12 can accordingly be selected as the sole drive ^source . Receives the engine control unit 10 due to the data transmitted from the navigation system 1, the information that the vehicle is in a mountainous area on a route with a large slope, so for example, in addition to the engine 12 and the electric motor 13 can be switched on briefly.

Claims

claims

A motor vehicle system comprising a navigation system (1) and an engine control unit (10), wherein the engine control unit (10) is adapted to process data provided by the navigation system (1), and the data is map data, information about an environment of the motor vehicle and / or traffic data.

2. The motor vehicle system according to claim 1, wherein the data is provided by the navigation system independently of the calculation of a route and / or the output of route guidance information.

3. Motor vehicle system according to one of the preceding claims, since you rchgekennzeichnet that the navigation system (1) is designed in the provision of data to take into account the current position of the motor vehicle and the current posi ^¬ tion by satellite and / or coupling location is determined.

4. Motor vehicle system according to one of the preceding claims, since you rchgekennzeichnet that the engine control unit (10) for selecting or Determination ^¬ engine control data is designed taking into account the data provided by the navigation system (1).

5. Motor vehicle system according to one of the preceding claims, since you rchgekennzeichnet that it is in the engine control unit (10) to a Mo ^¬ torsteuergerät (10) of an internal combustion engine (12).

6. The motor vehicle system according to claim 8, characterized in that the engine control unit

(10) is designed to select or determine fuel-saving engine control data taking into account the data received from the navigation system (1).

7. Motor vehicle system according to claim 8 or 9, since you rchgekennzeichnet that the Mo ^¬ torsteuergerät (10) for selecting or determination of motor torsteuerdaten in consideration of the data received from the navigation system (1) and exhaust emission data of the internal combustion engine (12) is designed.

8. Motor vehicle system according to one of the preceding arrival claims, since you rchgekennzeichnet that it is the engine control unit (10) is a Mo ^¬ gate control device of a hybrid drive with at least two drive sources, in particular an internal combustion engine (12) and at least one electric motor (13) ,

9. The motor vehicle system according to claim 8, wherein the engine control unit

(10) in a decision for switching on and off of an electric motor (13) as an additional drive source in addition to the internal combustion engine (12) designed to take into account the data provided by the navigation system (1).

10. Motor vehicle system according to claim 8 or 9, since - du rchgekennzeichnet that the Mo ^¬ torsteuergerät (10) is designed in a decision to select the drive source to take account of the data provided by the navigation system (1).

11. Engine control unit for use in a Kraftfahrzeugsys ^{¬ system} according to one of the preceding claims, wherein the Motor control unit (10) has an interface (14) to a navigation system (1) and is designed for processing via the interface (14) from the navigation system (1) data received and the data Landkartendaten, information about an environment of the motor vehicle and / or traffic data included.

12. Navigation system for use in a motor vehicle system according to one of the preceding claims, wherein the navigation system (1) has an interface (14) to an engine control unit (10) and is designed to provide data for the engine control unit (10) and the data is map data, Information about an environment of the motor vehicle and / or traffic data contained.