WO2011128410A1

WO2011128410A1 - Method and apparatus for drive control for a hybrid vehicle

Info

Publication number: WO2011128410A1
Application number: PCT/EP2011/055924
Authority: WO
Inventors: Friedrich Graf; Florian Gutknecht-Stöhr; Werner Hauptmann; Kai Heesche
Original assignee: Continental Automotive Gmbh
Priority date: 2010-04-16
Filing date: 2011-04-14
Publication date: 2011-10-20
Also published as: DE112011101345A5

Abstract

For the purpose of drive control for a hybrid vehicle, a journey route (FR1, FR2) to be taken which lies ahead is calculated between a current geographical starting position (AP) for the hybrid vehicle (FZ) and a geographical destination position (ZP) which is to be reached by the hybrid vehicle (FZ). Information relating to road and traffic situation is ascertained for the journey route (FR1, FR2) to be taken which lies ahead. On the basis of this information, a route segment (S1, S2,..., S8) which lies immediately ahead is determined from the journey route (FR1, FR2) to be taken which lies ahead. Information relating to driver, vehicle, road and/or traffic situation is ascertained for this current ascertained route segment (S1, S2,..., S8) which lies immediately ahead. On the basis of this information, the internal combustion engine (VM) and the electric motor (EM) are controlled when travelling on this route segment (S1, S2, …, S8).

Description

description

Method and device for drive control for a

hybrid vehicle

The present invention relates to a method for

Drive control for a hybrid vehicle and an apparatus for performing this method. Furthermore, the invention comprises a hybrid vehicle with the above-mentioned device or a hybrid vehicle, which is driven by the above-mentioned method.

To reduce fuel consumption and pollutant emissions, motor vehicles are nowadays designed in addition to an internal combustion engine as a primary drive or with an electric motor as a further, secondary drive. Such vehicles with an electric motor as a secondary drive are called

Hybrid electric vehicle called.

The internal combustion engine converts energy stored in conventional fossil or other organic energy sources into mechanical energy and uses this energy to power the vehicle. The electric motor is combined with a

Energy storage operated, the electric motor in the

Energy storage converts stored electrical energy into mechanical energy and drives the vehicle with this energy. The energy storage is by recovering kinetic energy or external energy sources such. B. at one

Power grid charged with electrical energy. The recovery of kinetic energy takes place in that the electric motor functions as a generator during a braking operation of the vehicle and converts kinetic braking energy of the vehicle into electrical energy and feeds it into the energy store.

The hybrid vehicle is capable of either using the

Internal combustion engine or with the electric motor, or with the Both motors to be driven at the same time. It is necessary to optimally use the two drives, that is to say the internal combustion engine and the electric motor, in order to achieve the same

The primary energy requirement of the internal combustion engine, namely to reduce the need for conventional fossil or other organic energy sources and thus also to reduce the exhaust emissions resulting from the consumption of conventional energy sources. In previously known method for the entire, to be completed route before the start of the vehicle with respect to the road and traffic information as the

Speed limits, road slopes or

Traffic analyzed. Depending on these for

Start of the journey present, entire road or

Traffic information is then set an operating strategy of the two engines over the entire, to be completed route, which states in which sections of the entire route the vehicle may be driven only with internal combustion engine and in which sections only with electric motor or both motors. For example, DE 198 31 487 discloses such a method.

These methods have the disadvantage that the already performed at the beginning of the trip, long-term for the entire

Route planned operating strategy over the entire, to be completed route can not respond to short-term disturbances in the route or on short-term changes to the route. Forms z. B. after the start of the journey or after the establishment of the operating strategy in a section of a traffic jam, so fail these methods and optimal use of the two drives for the rest, still to be completed route can no longer be guaranteed. The object of the present invention is thus to show a possibility for driving for a hybrid vehicle, which on short-term disturbances in the route or on short-term changes to the route can react quickly and thus allows optimal use of the two drives.

This object is solved by the independent claims. Advantageous embodiments are the subject of

Subclaims.

According to the first aspect of the invention, a method for drive control and / or drive control for a

Hybrid vehicle with an internal combustion engine as the first drive and an electric motor as the second drive and a

Energy storage to provide electrical energy for the electric motor created by the following

Signs method steps.

It is a calculation of a forward, to be completed route between a current, geographical

Initial position of the hybrid vehicle and a to be reached, geographical target position of the hybrid vehicle carried out. The initial position of the vehicle may be the starting position of the vehicle from which the vehicle is traveling. The starting position can also be a current geographical position of the vehicle while driving. The target position can be, for example, a position which the driver has entered via a vehicle-side navigation unit before the start of the journey or while driving. The preceding, to be completed route can then, for example, from a stored in the navigation unit, digital

Road map, taking into account traffic information received via radio link, be the fastest or shortest path from the initial position to the destination position. Subsequently, at least one first, road-related and / or traffic-related information about the preceding, to be completed route is determined. The road related information may include information about

Street classes or street types, street lengths,

Road curves, road intersections, road slopes, speed limits, light signs, Be traffic sign. The traffic-related information can be, for example, information about traffic, traffic congestion, construction sites on the route.

Depending on the at least one first information is then determined from the currently determined, to be completed route and starting from the current, geographical initial position of the vehicle as the starting point immediately ahead lying track segment, which is considered to be the first to drive. This route segment may be a road section, an entire road or a section of the route ahead with several road sections or roads, these road sections or roads having similar road-related properties. For example, all of these road sections or streets belong to one and the same

Route segments to a residential area with a

Driving speed limit to 30kmh.

To the currently determined, immediately ahead

Distance segment is then determined at least a second, driver, vehicle, road and / or traffic-related information. The driver-related information can

Information about average driving behavior or

Average speeds of the driver to this current, immediately ahead lying segment with associated specific road and / or traffic related properties. For example, such information may be an average speed with which the driver drives on highways. The vehicle-related information may be information about total vehicle weight, number of occupants.

When driving on this currently determined, directly ahead of the route segment, the two drives, so the combustion and the electric motor then controlled or regulated depending on the at least one second information. Thus, a method is created, which can react quickly to short-term disturbances in the route or to short-term changes in the route and thus allows optimal use of the two drives. According to an advantageous embodiment of the method is based on the second information for driving the route segment lying ahead overall required

Drive power and / or drive power calculated. Depending on this drive energy and / or drive power then the combustion and electric motor are controlled or controlled when driving on the current route segment. The drive energy calculated in this way gives information about how much energy the vehicle needs in total from the two drives, that is to say from the combustion engine and the electric motor, in order to be able to drive the route segment lying ahead with a driving speed entered by the driver by actuating the gas or brake pedal. The drive power provides information about the minimum required total power of the two drives in order to obtain the required power

Driving on the preceding route segment to be able to keep the driving speed entered by the driver. By

Compare this to drive ahead

Segment required drive energy or

Drive power with the provided by the internal combustion engine alone or by the electric motor alone

Drive energy or drive power can then be determined whether the route segment lying ahead can be driven alone with the electric motor or alone with the internal combustion engine, or for this both the internal combustion engine and the electric motor have to be switched on.

As a result, the operating strategy of the two drives can be easily and quickly optimized by means of a few comparatively easy to determine line and energy values.

According to a further advantageous embodiment of the method is currently provided by the electric motor and the energy storage as electric drive, drive energy or

Drive power determined. Depending on this drive energy or drive power, esp. By comparing this

Drive energy or drive power with the above, to drive the forward segment segment total required drive energy or drive power, the two drives can then be controlled or regulated.

For example, is the currently of the electric motor

Provisionable drive energy or drive power above the drive energy required for driving the forward segment segment or drive power, so the engine can be switched off and the vehicle when driving on this segment only with the electric motor driven.

Is currently available from the electric motor

Drive energy or drive power under the driving energy required for driving the distance segment lying ahead or drive power, the vehicle must be driven by the internal combustion engine or with the two drives.

The drive energy or drive power that can be provided by the electric motor can be determined in the form of the current state of charge of the energy store. The control or regulation of the internal combustion engine and the electric motor then takes place depending on the current state of charge of

Energy storage. In this case, the current state of charge is compared with a desired state of charge of the energy store. at

Exceeding the nominal state of charge by the current

Charging state, the vehicle can be driven purely electrically, so only with the electric motor.

As a result, a safe operation of the vehicle FZ in the case of an electric drive even with constantly changing state of charge can be ensured.

According to a further advantageous embodiment of the method of the internal combustion engine and / or the electric motor when driving this currently determined, directly ahead distance segment depending on the at least one second information in combination with the at least one first information controlled or regulated. This will both in the control or regulation of the two drives Information that applies only to the current route segment, as well as information that applies to the entire, yet to be completed route used in the control or regulation of the two drives, so that both one of the current

Adapted route segment adapted, short-term control as well as one of the entire, yet to be completed route adapted, long-term optimization of use of the two drives can be achieved. According to a further advantageous embodiment of the method, a nearest road intersection is determined in the preceding Fahrtourte. Subsequently, a road section from the current, geographical starting position of the

Hybrid vehicle up to the closest in the route route intersection as the immediately preceding

Distance segment determined.

This provides a possibility to quickly recalculate the route should, for example, a turn at a road intersection have been missed because of a brief carelessness of the driver.

According to a further advantageous embodiment of the method, the currently determined, immediately preceding

Road junction assigned based on their properties in one of the predetermined crossing classes. To the

Intersection classes include, for example, + intersection, T-junction, roundabout, motorway entrance, motorway exit, intersection with traffic lights and traffic lights, intersection without traffic lights or

Traffic signal, level crossing, and so on. The two

Drives are controlled or regulated when driving on this intersection, depending on the intersection class in which the currently determined, immediately preceding road intersection was assigned.

This gives a possibility inefficient

Internal combustion engine operation when driving on road intersections and to avoid frequent stopping and restarting of the internal combustion engine before the road intersections.

According to a further, advantageous embodiment of the method, at least one third driver-related, vehicle-related, road-related and / or traffic-related information to the currently determined, immediately preceding

Road intersection determined. This third driver-related information includes, for example, information about previously determined and stored driver behavior that indicates how or at what average driving speed the driver drives into the road intersection, crosses it and then leaves again. To the third

Vehicle-related information includes, for example, current vehicle speed, vehicle weight. To the third

Road-related information includes, for example, road signs set up at the intersection, traffic light switched on. The third traffic-related information includes, for example, traffic at the

Road intersection, number of vehicles in front of the intersection. To the third traffic-related

In particular, information includes information about which road section the vehicle is in the intersection

into driving. Depending on this information, the two drives are then when driving on this road intersection, so when driving on the track before, in and immediately after the

Road junction, controlled or regulated.

This gives a possibility inefficient

Internal combustion engine operation only in the intersections by premature shutdown of the engine and

avoid subsequent electric propulsion in which a significant deceleration of the vehicle or even stopping of the vehicle is very likely.

According to a further advantageous embodiment of the method, a probability of stopping, with which the driver drives the vehicle at the current, immediately preceding Depending on the intersection class, in which the current, immediately preceding intersection is assigned, and / or depending on the at least one first, the at least one second and / or the at least one third driver-related, vehicle-related, road-related and / or traffic-related Information calculated. These

Stopping probability comes with a given

Threshold compared and the two drives are then dependent on the comparison result of

Stops probability with the threshold controlled or regulated.

In addition, preferably for driving on the current road intersection with the driver by gas or

Brake pedal settings required driving speed minimally required drive power or drive power and determined by an electric drive with the electric motor and the energy storage maximum drive energy or drive power determined. This for driving the

Road crossing minimally required drive energy or

Drive power is then compared with the maximum drive energy or drive power that can be provided by electric drive. Depending on the comparison result of these two drive energies or drive powers and depending on the comparison result of the probability of stopping with the

Threshold, the two drives are controlled or regulated.

Exceeds the currently determined stopping probability of the predetermined threshold, and also exceeds the maximum of the electric drive propellable drive energy or

Drive power the driving energy required for driving on the road intersection minimally. Drive power, the engine is switched off and the current road junction is then driven only with electric drive. It will

Power transmission between the electric motor and the

Combustion engine advantageously prevented. Thus, a method is created which can react quickly to short-term disturbances in the route or to short-term changes in the route and thus allows optimal use of the two drives.

According to a further aspect of the present invention, a device for drive control and / or drive control is provided for a hybrid vehicle having an internal combustion engine as a first drive and an electric motor as a second drive, which comprises

a calculation device for calculating a

preceding, to be completed route between a current, geographic starting position of the hybrid vehicle and one to be reached, for example, manually entered by the driver and off

Navigation data of a navigation unit and based on a pre-stored in this navigation unit digital road map, geographic

Target position of the hybrid vehicle;

a determination device for determining at least one first road-related and / or traffic-related information about the preceding route to be completed;

a determination device for determining a

immediately preceding route segment from the preceding, to be completed route, with the current, geographical starting position as the starting point of the route segment depending on the at least one first information, wherein the determining means to the currently determined, immediately ahead

Segment at least a second,

driver-related, vehicle-related, road-related and / or traffic-related information determined;

a control device for controlling the

Internal combustion engine and / or the electric motor when

Driving the currently determined, directly ahead route segment depending on the at least one second information. According to a further aspect of the present invention, a hybrid vehicle is provided with an internal combustion engine as the first drive, an electric motor as the second drive, an energy storage device for providing electrical energy for the electric motor, which has a device described above and / or driven by a method described above , Advantageous embodiments of the method described above are, as far as the above-mentioned device or on the above-mentioned hybrid vehicle

transferable, also to be regarded as advantageous embodiments of this device or this hybrid vehicle.

In the following, an exemplary embodiment of the present invention will be explained with reference to the accompanying drawings. 1 shows a schematic representation of a device for drive control and / or drive control of a

Hybrid vehicle according to an embodiment of the invention;

Figure 2 is a schematic representation of a method for drive control and / or drive control of a

Hybrid vehicle according to an embodiment of the invention; and

Figure 3 is a schematic representation of a road map with a driving tour.

Reference is first made to Figure 1, in which a

Hybrid electric vehicle FZ with a device V for controlling or regulating the drives of the hybrid electric vehicle FZ is shown.

The hybrid electric vehicle FZ has an internal combustion engine VM, an engine clutch KP, an electric motor EM, an electric energy storage ES, a transmission GT and vehicle wheels RD. The internal combustion engine VM serves as a first, primary drive and converts the stored during operation in fossil and organic fuel, chemical energy into mechanical drive energy and drives the vehicle FZ with this drive energy. As a waste product in this operating process thereby umweitschädliche exhaust gases.

The engine clutch KP is used for producing or for preventing a power transmission KÜ from the internal combustion engine VM to the electric motor EM and via the transmission GT up to the

Vehicle wheels RD. In a clutch engaged state, the engine clutch KP provides a power transmission KÜ from the engine VM to the electric motor EM and to the engine

Vehicle wheels RD ago. In a disengaged clutch state, this prevents the power transmission KÜ of the

Internal combustion engine VM to the electric motor EM or to the

Vehicle wheels RD.

The electric motor EM serves as a second, secondary drive and is as needed between a generator and a

Switched electric motor operation. In an electric motor operation, the electric motor EM converts the electrical energy stored in the energy store ES into mechanical drive energy with which the electric motor EM drives the hybrid electric vehicle FZ. In a generator operation, for example, in a braking operation of the vehicle FZ, the electric motor EM converts the kinetic energy of the vehicle FZ into electrical energy, which is stored in the energy store ES.

The electrical energy store ES is designed, for example, as a double-layer capacitor (Ultra-Caps) and serves primarily as an energy source for the electric motor EM. In addition to the electric motor EM, the energy storage ES also supplies other electrical energy consumers such. B. electric heater, headlights from the vehicle FZ with electrical energy. The transmission GT is used to translate a rotational movement of the engine VM and the electric motor EM in one

Rotational movement of the vehicle wheels RD or for transmitting torques of the internal combustion engine VM and the electric motor EM to the vehicle wheels RD. By rotation of the vehicle wheels RD, the hybrid electric vehicle FZ is moved.

The hybrid electric vehicle FZ further comprises a device V, a navigation unit NV, a pedal adjustment sensor PS, a data memory SP, a vehicle front camera KM and a wheel speed sensor RS.

The device V is used for controlling or regulating the

Internal combustion engine VM and the electric motor EM and comprises a control or regulating device SE, a detection device EE, a determination device BE and a

Calculation device BE.

About a in the figure shown as dotted lines bus system BS such. B. CAN and / or LIN bus receives the

Device V of the navigation unit NV, the front camera KM, the pedal adjustment sensor PS, or of the

Wheel speed sensor RS navigation or sensor data, and controls and controls the engine VM and the electric motor EM and the engine clutch KP depending on this data.

The navigation unit NV is used to calculate a

lying ahead, to be completed route FR1, FR2 between a current, geographical initial position AP of

Hybrid vehicle FZ and to be reached, manually entered by the driver, geographical target position ZP of the vehicle FZ. The navigation unit NV, despite the separate representation of the device V in the figure, a component of the calculation device RE of the device V be.

The pedal adjustment sensor PS detects pedal setting of a gas or brake pedal of the vehicle FZ (not shown in greater detail in the figure) and forwards this sensor data via the bus system BU to the device V on. This sensor data provide information about a gas and / or brake pedal operation of the driver and thus a desired driving speed of the vehicle FZ.

The data memory SP is used to store various driver-related data such. B. general driving behavior of the driver, vehicle-related data such. B. the weight of the vehicle FZ.

The vehicle front camera KM continuously scans the road area in front of the vehicle front, recognizes traffic signs in this road area, and forwards information about recognized

Traffic sign on the bus system BU to the device V on.

The wheel speed sensor RS continuously detects wheel speed at one of the vehicle wheels RD and forwards the detected wheel speed to the device V via the bus system BU.

The device V can be designed as a correspondingly programmed microprocessor, in which case the control device SE, detection device EE,

Determination device BE and the calculation device RE modules in this microprocessor or parts of the programs installed on this microprocessor. Alternatively, the above-mentioned devices SE, EE, BE, RE of the device V may be arranged separately from one another in different vehicle components. In this case, these devices also exchange their data via the bus system BU.

After the hybrid electric vehicle FZ has been described according to the embodiment, the mode of operation of the device V or the method with which the two drives, ie the., With reference to Figure 2 and with the aid of digital road map shown by way of example in Figure 3

Internal combustion engine VM and the electric motor EM of Hybrid electric vehicle FZ controlled and regulated, described in more detail.

After starting the hybrid electric vehicle FZ and after the driver has manually entered a destination, ie a desired target position ZP via the navigation unit NV, the calculation device RE calculates according to method step S101 starting from the current starting position AP on which the vehicle FZ is currently located, and the input destination position ZP a route FR1, about this the vehicle FZ can reach from the initial position AP to the target position ZP, for example, the fastest. The travel route FR1 thus calculated, to be completed, forwards the calculation device RE to the determination device EE.

In accordance with method section S102, the determination device EE determines a first group of road and traffic situation-related information based on the digital map of the navigation unit NV for this route FR1. The road related information includes, for example, information about

Number of road sections which together form the travel route FR1; Road classes such. Highway, country road, municipal road to which the road sections are respectively assigned; Road types, such. B. main street,

City street, one-way street to which the road sections are respectively assigned; Speed limits in the respective road section; Road slopes of the respective road sections; contained road curves of the respective road sections. The traffic-related information contains information about traffic congestion on the route FR1. This traffic-related information is obtained by the determination device EE, for example via a broadcasting transmission, which receives the vehicle FZ via a broadcast receiving unit (not shown in detail) and forwards it to the device V.

Based on this first group of information, the determination device then determines BE in accordance with method step S104 first route segment Sl, which is immediately ahead and must be traveled first. Such a route segment S1 may contain some successive road sections of the route FR1, which have similar properties to each other in comparison to the next succeeding road sections. For example, all road sections of the

Segment segments S1 to the same street class and street type have the same

Speed limit and similar road gradients.

Alternatively, the determination device EE determines according to a previous method step S103 of the current

Starting position AP of the vehicle FZ, starting immediately adjacent road junction Kl in the route ahead FR1 and forwards information about the determined

Road junction Kl such. B. information about the location and nature of the intersection Kl and other properties of the determined road intersection Kl to the determination device BE on.

The determination device BE then determines according to

Method step S104 on the basis of the information obtained by the determination device EE to the currently determined

Intersection Kl between the current starting position AP of the vehicle FZ and the currently determined nearest intersection Kl lying road section as immediately preceding, to be driven first as the route segment Sl.

If a segment S1 is determined according to method step S104, in which the operating strategy for the internal combustion engine VM and the electric motor EM now has to be established and optimized, the apparatus V proceeds to method step S105. In this method step S105, the determination device EE determines a second group of information about this route segment Sl, relative to the driver, to the vehicle FZ, to the roads of this route segment S1, to the traffic situation in this route segment S1. The driver-related information includes, for example, information about average driving behavior of the driver, such. B. average speed, braking or

Acceleration behavior, on a street of one

Road class in which the route segment Sl is assigned. For this purpose, the determination device EE assigns the route segment S1 based on the road-related information determined in the method step S102 in one of the predefined road classes. Then reads the

Determining device EE determined in advance for this road class and stored in the data memory SP

Information about the driver's average driving behavior. This driver-related information provides information about a probable drive power requirement to be expected for driving on the route segment S1 or

Drive energy requirement of the driver. The vehicle-related information includes information about the current state of the vehicle FZ or the components of the vehicle FZ such. B. Total vehicle weight, state of charge of the energy storage ES. This vehicle-related information provides, for example, information about drive energy or drive power, which can be provided by the electric drive with the electric motor EM and with the energy storage ES maximum.

The road-related information includes, for example, information about road class and road type in which the road segment Sl is assigned,

Speed limits and road gradients in this segment Sl, as well as curves containing the segment Sl. This road-related information also provides information about a driving energy required for driving the segment segment Sl or drive power. The traffic-related information contains information about traffic, congestion on the route segment Sl and provide information about a required for driving the route segment Sl drive energy or drive power or about possible changes in this required drive power or drive power.

From the second group of information, in particular from the road and traffic-related information, it follows that the currently determined, immediately preceding track segment Sl in this example is a Tempo 30kmh road of a residential area and also there is no congestion in this track segment Sl.

To the environment of the segment Sl, which is a residential area, if possible not with harmful exhaust gases of the

To burden internal combustion engine VM, and also to increase the efficiencies of the two drives, this route segment Sl should be driven with Tempo-3 Okmh road as possible with the electric motor EM, because the efficiency of the engine VM at a FahrZeuggeschwindigkeit of 30kmh is relatively low.

To check if the segment Sl only with

Electric drive, so can be handled only with the electric motor EM, determines the detection device EE according to

Method step S106 from the second group of information a drive power Pb minimally required for driving the segment segment Sl and a drive energy Eb minimally required for driving the segment segment Sl and a maximum drive power Pae or a maximum amount of electric drive to be provided by the electric drive

Drive energy Eae.

From driver-related and vehicle-related information in connection with the road and traffic-related information

Information is determined to cope, so for driving the distance segment Sl minimally required drive line Eb and drive power Pb. For example, the minimum required drive line Eb as a function of the total vehicle weight, of the road slopes,

Determine speed limits on the route segment Sl. The minimum required drive energy Pb can be, for example, as a function of the total vehicle weight, from the road gradients, speed limits on the segment S1, the entire route length of

Determine distance segment Sl.

Furthermore, from the vehicle-related information, esp. From the current state of charge of the energy storage ES, as well as from current consumption of switched on power or

Energy consumers in the vehicle FZ, which are supplied by the energy storage ES with electrical energy, one of

Electric drive with the electric motor EM and the energy storage ES maximum providable drive power Pae and a maximum available drive energy Eae determined. This maximum of electric drive propulsion power Pae or drive energy Eae can be z. B. as a function of the state of charge of the energy storage ES and the

Total electricity consumption value of other energy consumers

determine .

The thus determined, for driving the distance segment Sl minimally required drive power Pb and for driving on the

Segment segments Sl minimally required drive energy Eb further compares the determination device EE according to step S106 with the maximum drive power Pae or drive energy Eae that can be provided by the electric drive.

Depending on the comparison results, the control or regulating device SE controls and regulates the two drives, that is to say the internal combustion engine VM and the electric motor EM, as well as the engine clutch KP, in accordance with method step S107.

Exceeds the maximum available drive power Pae the minimum required drive power Pb and at the same time exceeds the maximum supplyable drive power Eae the minimum required drive energy Eb, the control unit SE switches off the engine VM, separates the power transmission KÜ between the engine VM and the electric motor EM by disengaging the engine clutch KP. Consequently, the vehicle FZ is driven in the segment Sl only with the electric motor EM.

If the maximum deliverable drive energy Eae is less than the minimum required drive energy Eb, then the control or regulating device SE engages the engine clutch KP and drives both the vehicle wheels RD and the electric motor EM with the drive energy of the internal combustion engine VM Control device SE controlled in a generator mode is driven. In this case, the electric motor EM converts the surplus drive energy of the

Internal combustion engine VM into electrical energy, which is then stored in the energy storage ES. If necessary, this stored in the energy storage ES energy from the

Electric motor EM used to drive the vehicle FZ again. Thereby, the overall efficiency of the two drives, and thus also of the engine VM is increased at a constant exhaust ^¬ or pollutant emission for the entire route FR1.

In addition to the method steps S105, S106, the

Determining device EE nor process step S108, wherein this determines the previously determined in previous step S103, serving as the final position of the current segment segment Sl, nearest intersection Kl depending on their determined based on road-related information properties assigns to one of the pre-defined crossing classes. Thus, this intersection Kl becomes one in this example

Intersection class "T-intersections without traffic lights" assigned.

Immediately before reaching this intersection Kl the determination device EE then determines according to

Step S109 a third group of driver, road and traffic situation related information to this

Intersection Kl based on the intersection class in which the Road junction Kl is assigned. This information includes, for example, throttle and brake pedal settings of the driver, which the determination device EE of the

Pedal adjustment sensor PS receives; Traffic sign ZI at the intersection K1, which the detection device EE receives from the vehicle front camera KM; and information about which road section the vehicle FZ enters into the intersection Kl and connect via which road section the intersection Kl leaves again; as well as traffic information at the intersection Kl.

Based on this information, the calculates

Detection device EE further a stopping probability Wa, with which the vehicle FZ could stop before the intersection Kl. This stopping probability Wa then compares the determining means EE with a predetermined one

Threshold TH. Depending on the comparison result of the currently calculated stopping probability Wa with the threshold value TH, the control or regulating device SE controls and regulates the internal combustion engine VM according to method step S110

Electric motor EM, as well as the motor coupling KP.

The traffic sign ZI detected and transmitted via the vehicle front camera KM at the road section from which the vehicle FZ according to the third group of information in the

Crossing the road Kl is in this example a stop sign and thus indicates a hundred percent probability of stopping the vehicle FZ immediately before the intersection Kl out. The traffic information in this example also indicates a variety of vehicles entering from the other two road sections

Crossing the street Kl, and thus to a longer stop time of the vehicle FZ at the intersection Kl out. In this case, the control or regulating device SE according to method step S110 switches off the internal combustion engine VM far in front of the intersection Kl, should this occur when driving on the vehicle

Segment segment Sl has not yet been switched off, and switches the electric motor EM in the generator mode or on, and leaves Thus, the vehicle FZ slowly roll up to the intersection and slow it slowly. The resulting in this braking kinetic energy of the vehicle FZ is then from the located in the generator mode

Electric motor EM converted into electrical energy and then stored in the energy storage ES.

Immediately after leaving the intersection K1, the apparatus V goes back to the process step S101 and repeats the process steps from S101 to S110. So immediately after leaving the intersection Kl calculates the

Calculating device RE, starting from the current position of the vehicle FZ and the initially entered target position ZP and according to method step S101 the ahead, still to be completed route, which is now the route FR1 without the already traveled road segment Sl.

In accordance with method steps S102, S103, the

Detection device EE then the closest

Road intersection K2 of the now present, to be completed route and according to method step S104, the determination means BE determines the next to be traveled

Route segment S2 to the next intersection K2. According to method step S108, the determination device EE assigns the currently determined, nearest road intersection K2 based on its properties determined in accordance with method step S103 in the intersection class "T intersection without traffic light system." The second and third groups of information determined according to method steps S105, S109 indicate this in that the route segment S2 is a country road and the road intersection K2 is a T junction without a traffic light system, wherein the

Road section of the route segment S2, the

Route segment S2 leads into this intersection K2, according to one of the vehicle front camera KM detected traffic sign Z2 is located in a priority road.

Based on this information, the control and regulating device SE controls and regulates the internal combustion engine VM and the engine Electric motor EM and the engine clutch KP when driving on the segment S2 and connect the intersection K2 according to process steps S107, S110. Since this route segment S2 is a highway and also the traffic sign Z2 on a right of way, thus an unchecked passage of the

Road intersection K2 suggests driving the tax and

Control device SE the vehicle FZ when driving on

Section S2 and the road intersection K2 only with the engine VM.

Immediately after leaving the intersection K2, the device V repeats the process steps S101 to S110 again. In this case, the determining device determines a road intersection K3, which is assigned to an intersection class "+ intersection with traffic light system" according to its characteristics and because of a detected traffic light system at the intersection K3.Acknowledges the investigator EE using the vehicle front camera KM and according to step S109 that the traffic light system directly before the vehicle FZ enters the intersection K3, changes to red, then switches the control and

Regulating device SE according to method step S110 and before the intersection K3 the engine VM, and disengages the engine clutch KP and thus interrupts the power transmission KÜ between the engine VM and the electric motor EM and switches the electric motor EM in the generator mode.

Immediately after leaving the intersection K3, the determining means BE determines based on the now available road-related information for the current,

completing route FR1 without the ready-traveled

Route segments Sl, S2, S3 a motorway entrance to the end point of the highway entrance, which is now considered the nearest intersection K4, as now present, to be traveled next segment S4. Based on the information, in particular based on detected and transmitted from the vehicle front camera KM traffic sign Z4, that the now existing route segment S4 is a motorway entrance, the control and regulation device SE switches both the Internal combustion engine VM and the electric motor EM and accelerates the vehicle FZ so with the two drives, so that the vehicle FZ can quickly reach a prevailing in subsequent sections S5, S6 on the highway directional speed.

Immediately after leaving the intersection K4 and after entering the motorway, the

Determining device EE according to method step S103

Motorway exit, from which the vehicle FZ will exit the motorway based on the present route, as the next intersection K5. The determination device BE then determines, according to method step S104, the highway route to the next road intersection K5 as an immediately preceding route segment S5 to be traveled next. The control and regulating device SE controls and then regulates the two drives as a function of the information now determined according to method steps S102, S105, S109. But now due to carelessness of the driver

Highway exit missed at the intersection K5, the device recognizes V immediately after leaving the

Road intersection K5 this error and immediately causes the calculation device RE to recalculate the route to the initially entered target position ZP. Thus, the calculation device RE now justifies, starting from the current position according to method step S101, a new travel route FR2 up to the destination position ZP. The following

Process steps S102 to S110 will be performed from now on based on this new travel route FR2. So determined the

Determining device EE according to step S103 a new nearest intersection K6 using the the

Detection device EE in the previous method step S102 determined information. Subsequently, the determination device BE determines a new route segment S6, which now has to be traveled directly next. After driving on the intersection K6, so after leaving the highway, repeats the device V the

Process steps S101 to S100 again. Thus calculates the calculation device RE, starting from the current position of the vehicle FZ and according to step S101, the now current, still to be completed route bin towards

Target position ZP. Based on the first information determined according to method step S102, then according to

Process steps S103, S104 nearest intersection K7 and immediately ahead, next to be traveled segment S7 up to the nearest

Road intersection K7 determined and determined. Subsequently, according to method step S105, second road-related

Information about the segment S7 is determined. In this example, this second road-related information indicates that the entire route segment S7 is on a country road.

To control or regulate the two drives for driving on the route segment S7 that is currently to be traveled, the device V also draws the first road-related information about the entire travel route still to be completed. In this example, this first road-related information indicates that after the current immediately preceding one

Route segment S7 only track segments follow S8, which are located in a residential area WG and a

Speed limit of 30kmh. to

Optimization of the overall efficiency of the two drives and to avoid exhaust emissions in the residential area WG should the following route segments S8 as possible only with

Electric drive, so only with the electric motor EM, be driven.

For this purpose, the determination device EE calculates according to

Step S106 in addition to driving to the current

Segment segment S7 minimally required drive power Pb or drive energy Eb nor the minimal driving power required for driving on the following segments S8 drive power Pb ^y or drive energy Eb ^y . In addition, the determined

Determining device EE the state of charge of the energy storage ES and calculated based on the current state of charge and the total energy consumption of the electronic or

electrical components of the vehicle FZ, which are also supplied by the energy storage ES with electrical energy, the maximum power from the electric drive Pae and drive energy Eae. Are the maximum of the electric drive available

Drive power Pae and drive energy Eae lower than the drive power Pb ^y or drive energy Eb ^y required for driving on the following route segments S8, the control and regulating device SE switches the electric motor EM into the generator mode when driving the current route segment S7 according to method step S107 controls the engine VM so that it generates more drive line and drive power than required for driving on the current route segment S7 drive line Pb and drive energy Eb. This excess drive line or drive energy generated by the internal combustion engine VM drives the electric motor EM in generator operation, so that the latter charges the energy store ES with electrical energy. Consequently, the energy storage ES is charged upon reaching the next intersection K7 with additional energy, which is then converted into the driving energy for the vehicle FZ of the electric motor EM when driving the subsequent route segments S8. As a result, the route segments S8, which, because of their position in a residential area WG, are not considered to be navigable with the internal combustion engine VM, can now only be driven by electric drive thanks to the electrical energy that is obtained and stored when driving on the preceding segment S7.

The above-described process steps S101 to S110 repeats the device V until the vehicle FZ has reached the initially input target position ZP.

Claims

claims

1. A method for drive control for a hybrid vehicle (FZ) with an internal combustion engine (VM) as the first drive and an electric motor (EM) as a second drive and a

Energy storage (ES) for providing electrical energy to the electric motor (EM), with the following

Process steps:

Calculating a preceding route to be traveled (FR1, FR2) between a current, starting geographical position (AP) of the

Hybrid vehicle (FZ) and a to be reached, geographical target position (ZP) of the hybrid vehicle (FZ),

Determining at least a first, road-related and / or traffic-oriented information about the preceding route to be completed (FR1, FR2),

Determining an immediately preceding route segment (Sl, S2, S8) from the preceding route to be completed (FR1, FR2) as a function of the at least one first

Information,

Determining at least one second, driver-related, vehicle-related, road-related and / or traffic-oriented information about the currently determined, directly ahead-lying route segment (Sl, S2, S8),

- Controlling the internal combustion engine (VM) and / or the electric motor (EM) when driving this currently determined, immediately ahead lying segment (Sl, S2, S8) depending on the at least one second information. 2. The method according to claim 1, characterized by

Calculating a driving energy (Eb) required for driving on the immediately preceding track segment (Sl, S2, S8) and / or Drive power (Pb) depending on the at least one second information,

Controlling the internal combustion engine (VM) and / or the electric motor (EM) when driving on the immediately preceding road segment (Sl, S2, S8) as a function of the road segment (Sl, S2,

S8) calculated drive power (Eb) and / or drive power (Pb).

Method according to one of the preceding claims, characterized by

- Determining current for the electric motor (EM)

Provable electrical energy (Eae) of the energy store (ES),

- Controlling the internal combustion engine (VM) and / or the electric motor (EM) when driving the immediately preceding section of road (Sl, S2, S8) depending on the current for the electric motor (EM) can be provided, electrical energy (Eae) of the energy storage (ES ).

Method according to one of the preceding claims, characterized by controlling the internal combustion engine (VM) and / or the electric motor (EM) when driving the immediately preceding section of road (Sl, S2, S8) depending on the at least one second information in combination with the at least one first information.

Method according to one of the preceding claims, characterized by

- Determine a nearest intersection (Kl, K2, K7) in immediately preceding

Distance segment (Sl, S2, S8),

Determining a road section from the current, geographic starting position (AP) of the

Hybrid vehicle (FZ) up to the currently determined, nearest intersection (Kl, K2, ..., K7) than the immediately preceding route segment (Sl, S2, S8).

Method according to one of the preceding claims, characterized by

- Determine the nearest intersection (Kl, K2, K7) in immediately preceding

Distance segment (Sl, S2, S8),

- Assign the currently determined, nearest road intersection (Kl, K2, ..., K7) based on their property in one of the predetermined

Intersection classes

- Control of the internal combustion engine (VM) and / or the electric motor (EM) when driving on this

Road intersection (Kl, K2, ..., K7) depending on the intersection class, in which the currently determined nearest intersection (Kl, K2, ..., K7) was assigned.

A method according to claim 6, characterized by

Determining at least one third driver-related, vehicle-related, road-related and / or traffic-oriented information about the currently ascertained, nearest road intersection (Kl, K2,..., K7),

Road intersection (Kl, K2, ..., K7) depending on the at least one third information.

Method according to one of claims 6 or 7, characterized by

Calculating a stopping probability with which the hybrid vehicle (FZ) is stopped at the currently ascertained, nearest road intersection (Kl, K2,..., K7) ovon of the intersection class in which the currently determined nearest intersection (Kl, K2, ..., K7) has been assigned,

ovon the at least one third information, and / or

- Compare the currently calculated

Stopping probability with a predetermined threshold,

- Switching off the internal combustion engine (VM) and driving the currently determined, nearest

Road intersection (Kl, K2, ..., K7) with the electric motor (EM), if the currently determined

Probability of stopping the threshold

exceeds.

A method according to claim 8, characterized by preventing a power transmission between the electric motor (EM) and the internal combustion engine (VM), when the currently determined stopping probability exceeds the threshold value and the internal combustion engine (VM) is switched off.

10. Device for drive control for a

Hybrid vehicle (FZ) with an internal combustion engine (VM) as the first drive and an electric motor (EM) as the second drive, with the following features:

a calculation device (RE) for calculating a forward travel route (FR1, FR2) to be completed between a current, geographic initial position (AP) of the hybrid vehicle (FZ) and a geographic target position (ZP) of the hybrid vehicle (FZ) to be reached,

- A determination device (EE) for determining

at least a first, road-related and / or traffic-related information to the

ahead, to be completed route (FR1, FR2),

a determination device (BE) for determining an immediately preceding distance segment (Sl, S2, S8) from the preceding, to be completed route (FRl, FR2) depending on the at least one first information,

- the determination device (EE) for determining

at least a second, driver-related,

vehicle-related, road-related and / or traffic-related information to the currently determined, immediately ahead

Distance segment (Sl, S2, S8),

- A control device (SE) for controlling the internal combustion engine (VM) and / or the electric motor (EM) when driving on the currently determined,

directly ahead of the route segments (Sl, S2, S8) depending on the at least one second information.

Hybrid vehicle (FZ), with

an internal combustion engine (VM) as the first drive,

an electric motor (EM) as the second drive,

- An energy storage (ES) to provide

electrical energy for the electric motor (EM), the hybrid vehicle (FZ)

- Has a device according to claim 10, and / or

- Is driven by a method according to any one of claims 1 to 9.