DE102008057602A1 - Motor vehicle i.e. hybrid vehicle, operating method, involves automatically continuing operating cycle by using controller of motor vehicle, if key authorized for vehicle is respectively detected and not detected during requests - Google Patents

Abstract

The method involves automatically detecting whether a key authorized for a motor vehicle (1) is present. An operating cycle is continued automatically by using a controller (7) of the motor vehicle, if a key authorized for the motor vehicle is detected during a request and if the key authorized for the motor vehicle is not detected during another request. The motor vehicle between manual starting and manual stopping of an internal combustion engine (6) of the motor vehicle is present in the operating cycle. The engine of the motor vehicle is operated in a starting/stopping operation. An independent claim is also included for a device for operating a motor vehicle.

Description

The The present invention relates to a method and an apparatus for operating a motor vehicle and in particular a start / stop behavior an internal combustion engine in dependence a keyless entry system of the motor vehicle.

at a motor vehicle equipped with a keyless entry system According to the state of the art can usually take a ride with the Motor vehicle can only be started or continued when the keyless entry system is in a state in which it is entitled to the motor vehicle key detected, so that an immobilizer of the motor vehicle is disabled. Now there are situations in which it is beneficial continue a journey with the motor vehicle then can, if not for the motor vehicle authorized key is located in the motor vehicle. This is z. B. then the case, if authorized for the motor vehicle key was accidentally removed from the motor vehicle (eg when the key accidentally taken away by an exiting passenger) and the motor vehicle has to be moved, since it is different, for example Road users blocked at their current location or with special needs.

Therefore It is the object of the present invention, a lie down or stopping a motor vehicle to prevent, even if currently no for the motor vehicle authorized key is located in the motor vehicle, although the theft of the motor vehicle does not facilitate becomes.

According to the invention this Task by a method for operating a motor vehicle after Claim 1, an apparatus for operating a motor vehicle according to claim 6 and a motor vehicle according to claim 14 solved. The define dependent claims preferred and advantageous embodiments the invention.

in the Within the scope of the present invention is a method of operation a motor vehicle provided with a motor. In this Procedure is automatically detected or checked, whether one for the motor vehicle authorized key near, especially within, the motor vehicle is present. If at a first query an for the motor vehicle authorized key is detected and at a second query, which follows this first query directly, no for the Vehicle authorized key is detected, a driving cycle of the motor vehicle is still automatic continued or not by means of a control of the motor vehicle canceled. A driving cycle starts with a manual start of the engine and ends with a manual engine stop.

With In other words, a drive with the motor vehicle can continue even if not for that Motor vehicle authorized key is detected if the motor vehicle in a drive cycle the engine is not yet manually (especially by the driver) was stopped). This means, a once started and not yet finished drive cycle can continue be, even if the for the motor vehicle authorized key leaves the motor vehicle. Under a second query that directly follows a first query, is to be understood that between the first and the second query no further query takes place.

By the inventive method it is now advantageously possible the motor vehicle still to drive or finish a ride, if the for the motor vehicle authorized key unintentionally from the Motor vehicle was removed. Because the ride only continued can be when the motor vehicle is in a drive cycle, the engine has not been stopped manually, so will the Theft of the vehicle is not relieved.

If Once the engine has been stopped manually, the engine will not restart started, even if the key for the Motor vehicle was detected shortly before, but not anymore is detected. For example, if the driver manually engages the engine stops, he signals that he is driving or driving want to finish so that it would be unfavorable in this case, the engine without one for the motor vehicle start authorized key to be able to.

advantageously, receives an occupant in the motor vehicle an indication as soon as it is detected that the authorized key has left the vehicle or if at the first query a valid key is detected and the second query does not capture an authorized key becomes. As a result, for example, a driver of the motor vehicle is informed, that he the motor vehicle only due to the present invention can drive so that the driver is aware that it is This is an exception and he unintentionally removed key as soon as possible should procure again to allow unrestricted operation of the motor vehicle to ensure.

In a preferred embodiment, the engine, for. As an internal combustion engine in a hybrid vehicle, operated in start / stop operation. In this case, the engine is started automatically or at least not stopped when the motor vehicle for the first time authorized for the motor vehicle Key detected after shortly before an authorized key was recorded. In particular, the engine is started or stopped automatically (if it is running) exactly when it is detected that the authorized key has left the motor vehicle.

About the automatic starting of the engine, for example, a driver or an occupant of the vehicle made aware that the motor vehicle is in a special state. Because the engine is only started automatically when the authorized for the motor vehicle key short is recorded before (eg a few minutes before) is also at this embodiment of the Theft of the vehicle is not relieved.

at the automatic starting according to the invention of the engine is the immobilizer of the motor vehicle advantageously disabled, although no for the motor vehicle authorized key is detected. If too a later one Time when the drive cycle is finished or the engine is stopped manually, trying again to start the engine manually or automatically, In particular, this attempt is only successful if this Time again for the vehicle detects authorized key has been so as to disable the immobilizer.

at a further embodiment of the invention is at an engine speed of 0 (the engine does not turn) and at at least one open door of the motor vehicle especially about an engine control unit of the motor vehicle by means of the keyless entry system with a predetermined period from Z. B. 2-3 Minutes periodically attempts to authorize a vehicle Key too to capture. If all doors of the motor vehicle are closed, the experiments, a for the motor vehicle authorized key to detect, more rarely or not periodically, a battery of the key too conserve. About that In addition, even when certain events such. B. when pulling up an outside arranged handle of a door of the motor vehicle or when closing a door of the motor vehicle, after one for searched the motor vehicle authorized key.

The above, whether an authorized key is detected can be, is independent from a selector lever position of the motor vehicle. It may be this selector lever around a selector lever an automatic transmission of the motor vehicle or a selector lever act with which one can influence in a hybrid vehicle whether the motor vehicle from its electric motor or its internal combustion engine is powered or its energy relates.

By doing straight at an open Door of the motor vehicle periodically comparatively frequently and while closing the door explicitly one for the motor vehicle authorized key is sought, is advantageous quickly detected when the for the motor vehicle authorized key leaves the motor vehicle. there it is assumed that the key the vehicle leaves or left, if a first attempt authorized for the motor vehicle key to grasp, and has been successful right after this first trial taking place, one for the motor vehicle authorized key to capture, remains unsuccessful.

If it is the motor vehicle to a motor vehicle with several Engines, which, for example, in a hybrid vehicle Case is, which is usually an internal combustion engine and a Having electric motor, is advantageously the internal combustion engine automatically started or not stopped when detected that for the Vehicle authorized keys has left the vehicle.

There For example, in a hybrid vehicle, the electric motor usually only for one low mileage is designed (ie with the electric motor can only a short drive back because of the capacity the electric motor driving the battery is usually low) is It is beneficial to start the engine automatically when the key (unintentionally) leaves the motor vehicle, as a probability exclusively with the internal combustion engine to finish the ride is much higher, as a probability, only with the electric motor driving to end. In a motor vehicle with multiple engines should So according to the present Invention of that engine to be started automatically, with which most likely the trip can be stopped or with which the longest Driving distance to be covered can.

According to the invention is at a further embodiment the engine is not automatically stopped after being in accordance with the present Invention has been started automatically or not stopped.

In certain vehicles, the engine is automatically stopped in certain situations to save fuel. In such a motor vehicle, for example, normally the engine is stopped as soon as the motor vehicle is stationary. Since in this case (engine is switched off) to restart the engine, the immobilizer would have to be disabled, the engine could only be started when (previously) a key authorized for the motor vehicle has been detected. Therefore, it becomes more advantageous way waived automatic stopping of the engine, as soon as the engine has been started automatically or not stopped due to the present invention.

in the The scope of the present invention also provides a device for the Operating a motor vehicle provided with a motor. there The device comprises a controller, a keyless entry system and a start / stop device (in particular a start / stop button), with which the engine can be started and stopped manually. The Keyless entry system detects or verifies at certain intervals whether one for the motor vehicle authorized key is present. The device is now designed such that the control of the engine so controls that a driving cycle of the vehicle continues even then and not aborted when the keyless entry system at a first query one for the motor vehicle authorized key recorded and at a second query, which immediately follows the first query, none for the Motor vehicle authorized key recorded. In this context, in the context of the present invention, a drive cycle begins, when the engine of the motor vehicle is started manually, and the Driving cycle ends when the engine of the motor vehicle stopped manually becomes.

The Advantages of the device according to the invention correspond essentially to the advantages of the method according to the invention, which in advance in detail be discussed, which is why here renounced a repetition becomes.

The Device is in particular designed such that the Drive cycle is aborted or terminated by the controller as soon as the engine over the start / stop facility (not to be confused with an automatic start / stop) stopped manually becomes.

at an embodiment of the invention the device comprises an information output device via which the device issues an indication when the device detects that one for the motor vehicle authorized key leaves the motor vehicle or has left. This information task device can, for example, a Display panel in the dashboard of the motor vehicle, on which then written or indicated by a symbol that no authorized key exists is. About that It's natural, of course also possible, that the information output device an audible indication or by means of a warm lamp gives an indication that the authorized key is missing.

According to one inventive embodiment The device comprises an automatic start / stop control for the engine of the motor vehicle. In this case, the device is designed such that the motor coupled to the automatic start / stop control from the controller automatically started or not stopped when the keyless entry system comes on a first query one for the motor vehicle authorized key recorded and at a second query, which immediately follows the first query, none for the Motor vehicle authorized key detected.

If The engine, however, therefore not running because he previously by means of Start / stop setup manually is stopped, the coupled with the automatic start / stop Motor from the controller does not start automatically because the controller has pre-recorded that the engine is manual via the start / stop facility was stopped and thereby the drive cycle is completed.

Corresponding a further embodiment of the invention the device is designed such that the keyless entry system with different time intervals after a for the motor vehicle is looking for authorized key. If the with the Start / stop system coupled engine is not running and at least one door of the motor vehicle is open, looking for the keyless entry system a first predetermined period periodically after one for the motor vehicle authorized key. If all doors of the motor vehicle are closed, looking for the keyless entry system with a second predetermined period periodically one for the motor vehicle authorized key. In this case, the first predetermined period is shorter than the second predetermined period Period.

There Normally, an authorized key only then the motor vehicle leaves, when the owner of the authorized key leaves the motor vehicle is it makes sense in shorter Time intervals after one for to look for the motor vehicle authorized key, if at least a door of the motor vehicle opened is as if all the doors are closed (and thus no occupant the vehicle on a can leave normal way).

Finally will in the context of the present invention, a motor vehicle with a Motor provided, which comprises a device according to the invention.

The present invention is particularly suitable for motor vehicles, including hybrid vehicles, to prevent the motor vehicle from inadvertently becoming inaccessible. A preferred application of the present invention relates to vehicles with start-stop control or start-stop control of an internal combustion engine, which stop the combustion engine when the vehicle is stationary and restart the combustion engine if the vehicle continues to drive. Of course, the present invention is not limited to these preferred applications, but can for example be used for aircraft, motor boats or track-bound vehicles.

in the Next, the present invention will be described with reference to the drawings based on an embodiment explained.

In the single figure is a motor vehicle shown schematically.

1 schematically represents a motor vehicle 1 which is a device according to the invention 2 , an engine control 5 as well as an internal combustion engine 6 and an electric motor (not shown). The device 2 in turn includes a controller 7 , a keyless entry system 3 and a control 4 , z. In the form of a start / stop button, over the engine control 5 the internal combustion engine 6 and / or to start or stop the electric motor.

If a driver, which one for the motor vehicle 1 authorized key leads to a door handle of the motor vehicle 1 pressed, checked the keyless entry system 3 whether it covers the authorized key. If this is the case, the motor vehicle 1 unlocked, leaving the driver and a passenger in the vehicle 1 can get in without one of them before the motor vehicle 1 must unlock manually. To the motor vehicle 1 or the electric motor or the internal combustion engine 6 To start, the driver now operates the control 4 , Then either the electric motor or the internal combustion engine 6 via the engine control 5 started, which previously an immobilizer (not shown) of the motor vehicle 1 has disabled because the engine control 5 via the keyless entry system 3 has learned that an authorized key has been registered.

Holds the driver with the vehicle 1 now, for example, at a gas station, without the control 4 to operate (ie without the internal combustion engine 6 to stop manually), the engine control switches 5 the internal combustion engine 6 to save fuel. The passenger leaves the vehicle in this situation 1 to pay, with the passenger taking the authorized key, so captures the keyless entry system 3 This situation immediately, since the keyless entry system 3 when the internal combustion engine is not running 6 and if at least one door of the motor vehicle 1 is open, periodically with a short period of time for the motor vehicle 1 looking for authorized key. In addition, the keyless entry system is looking for 3 when detecting certain events, such as B. when detecting that a door of the motor vehicle is closed, that for the motor vehicle 1 authorized key. Thus, if the passenger leading the authorized key in the present case shuts the door, the keyless entry system will detect 3 promptly that the authorized key is no longer in the vehicle 1 or that the authorized key is the vehicle 1 has left. In this case appears on a dashboard of the motor vehicle 1 an indication that the keyless entry system 3 detected no authorized key and the internal combustion engine 6 is about the controller 7 automatically started.

If the internal combustion engine 6 is not stopped automatically (eg because a battery driving the electric motor is nearly empty) before the passenger drives the vehicle 1 leaves, would the internal combustion engine 6 not be stopped according to the invention, even if the keyless entry system 3 no more valid key recorded.

The driver is now able, for example, as he recognizes that another motor vehicle, a gas pump, which the motor vehicle 1 blocked, wants to use, the motor vehicle 1 to move, though the keyless entry system 3 still none for the motor vehicle 1 authorized key.

The driver drives the motor vehicle 1 Now, for example, to a parking lot of the gas station and stops there the internal combustion engine 6 manually by operating the operating element 4 , Subsequently, both the electric motor and the internal combustion engine 6 only be restarted when the keyless entry system 3 again one for the motor vehicle 1 detected authorized key, so for example, when the passenger has reentered with the key.

However, the driver actuates the operating element 4 before the passenger with the key the motor vehicle 1 leaves, then the engine is not automatically started when the passenger with the key the motor vehicle 1 leaves because the drive cycle by stopping the engine 6 by means of the operating element 4 finished wound.

To Completion of a driving cycle, the vehicle can be locked, wherein according to one embodiment the invention is provided that the driver (even without a key) the Vehicle by operation a sensor arranged on the vehicle, for example by means of one at the outside door handle attached buttons, can lock.

1

motor vehicle

2

contraption

3

Keyless entry system

4

Start / stop button

5

motor control

6

engine

7

control

Claims (14)

Method for operating a motor vehicle, wherein the motor vehicle ( 1 ) between a manual start and a manual stop of an engine ( 6 ) of the motor vehicle ( 1 ) is in a driving cycle, whereby it is automatically detected whether one for the motor vehicle ( 1 ) authorized key is present, characterized in that the driving cycle automatically by means of a controller ( 7 ) of the motor vehicle ( 1 ) is continued, if in a first query one for the motor vehicle ( 1 ) authorized key and in a second query, which follows the first query directly, no for the motor vehicle ( 1 ) authorized key is detected. A method according to claim 1, characterized in that an indication is issued when the driving cycle is continued, since in a first query one for the motor vehicle ( 1 ) authorized key is detected and since in a second query, which follows the first query directly, no for the motor vehicle ( 1 ) authorized key is detected. Method according to claim 1 or 2, characterized in that the engine ( 6 ) of the motor vehicle ( 1 ) is operated in start / stop mode, that the engine operated in start / stop mode ( 6 ) is started automatically or is not stopped when, for a first query, one for the motor vehicle ( 1 ) authorized key is detected and in a second query, which follows the first query directly, no for the motor vehicle ( 1 ) authorized key is detected. Method according to claim 3, characterized in that if the engine ( 6 ) is not running and at least one door of the motor vehicle ( 1 ) is opened, is tried periodically with a predetermined period, one for the motor vehicle ( 1 ) and that if the motor vehicle is closed ( 1 ) is attempted at longer time intervals than the period duration, one for the motor vehicle ( 1 ) to acquire authorized keys. Method according to one of the preceding claims, characterized in that the engine is an internal combustion engine ( 6 ) of the motor vehicle. Device for operating a motor vehicle with a motor, wherein the device ( 2 ) a controller ( 7 ), a keyless entry system ( 3 ) and a start / stop device ( 4 ) for starting and / or stopping the engine ( 6 ), wherein the motor vehicle ( 1 ) between a manual start and a manual stop of the engine ( 6 ) is in a drive cycle, wherein the keyless entry system ( 3 ) detects whether one for the motor vehicle ( 1 ) authorized key, characterized in that the device ( 2 ) is configured such that the controller ( 7 ) the engine ( 6 ) such that the driving cycle of the motor vehicle ( 1 ) can be continued if the keyless entry system ( 3 ) in a first query one for the motor vehicle ( 1 ) authorized key and in a second query, which follows the first query directly, none for the motor vehicle ( 1 ) authorized key. Device according to claim 6, characterized in that the device ( 2 ) is configured such that the controller ( 7 ) terminates the drive cycle when the engine ( 6 ) by means of the start / stop device ( 4 ) is stopped. Device according to claim 6 or 7, characterized in that the device ( 2 ) comprises an information output device, and that the device ( 2 ) is configured such that the device ( 2 ) issues an indication by means of the information output device when the controller ( 7 ) continues the drive cycle, since the keyless entry system ( 3 ) in a first query one for the motor vehicle ( 1 ) authorized key and in a second query, which follows the first query directly, none for the motor vehicle ( 1 ) authorized key. Device according to one of claims 6-8, characterized in that the device is an automatic start / stop ( 5 ) for the engine ( 6 ) of the motor vehicle ( 1 ) that the device ( 2 ) is configured such that the controller ( 7 ) with the automatic start / stop function ( 5 ) powered engine ( 6 ) automatically starts or does not stop when the keyless entry system ( 3 ) in a first query one for the motor vehicle ( 1 ) authorized key and in a second query, which follows the first query directly, none for the motor vehicle ( 1 ) authorized key. Apparatus according to claim 9, characterized ge indicates that the device ( 2 ) is designed such that the keyless entry system ( 3 ), if the engine operated with the automatic start / stop function ( 6 ) is not running and at least one door of the motor vehicle ( 1 ) is opened, with a predetermined period periodically tried, one for the motor vehicle ( 1 ), and that the keyless entry system ( 3 ) with closed doors of the motor vehicle ( 1 ) in longer time intervals than the period, one for the motor vehicle ( 1 ) to acquire authorized keys. Device according to one of claims 6-10, characterized in that the engine is an internal combustion engine ( 6 ) of the motor vehicle ( 1 ). Device according to one of claims 6-11, characterized in that the device ( 2 ) is configured for carrying out the method according to one of claims 1-5. Device according to one of claims 6-12, characterized in that the start / stop means a control element ( 4 ), in particular a start / stop button. Motor vehicle with a device according to one of claims 6-13.