Procedure for operating a motor vehicle

Abstract

Method for operating a motor vehicle (1) which is driven by a drive unit comprising an internal combustion engine and at least one electric machine supplied via an electrical energy storage device, wherein: - a number of predetermined routes (S) with three-dimensional route profiles are stored in a motor vehicle navigation system (1); - the navigation system detects that the motor vehicle (1) is traveling on a predetermined route (S) and that the motor vehicle (1) is operated in a sport mode with increased driving dynamics of the drive unit compared to a normal operating mode, wherein in sport mode the operation of the drive unit is adapted depending on the current position and direction of travel (P) of the motor vehicle (1), which are detected by the navigation system, as well as the route profile of the predetermined route (S), - in a section (A') of the predetermined route (S) where increased spontaneity of the drive unit is to be provided, the drive power of at least one electric machine is increased to compensate for dynamic delays of the internal combustion engine, and - a damping of torque delivery to drive wheels of the motor vehicle (1) during changes in the accelerator pedal, in the section (A') of the predetermined route (S) in which the increased spontaneity of the drive unit is to be provided, is reduced and / or switched off.

Description

[0001] The invention relates to a method for operating a motor vehicle which is driven by a drive unit comprising an internal combustion engine and / or at least one electric machine supplied via an electrical energy storage device.

[0002] It is known from the prior art to provide different operating modes with varying driving dynamics when operating a motor vehicle. For example, an operating mode for a sportier driving behavior can be manually activated by the driver. Document WO 2009 / 006983A1 describes the operation of a hybrid vehicle in which, depending on navigation data from the navigation system, the vehicle drives electrically or an electrical energy storage device is charged.

[0003] Conventional methods for adapting a motor vehicle's operating strategy have the disadvantage that the vehicle is generally not optimally conditioned for dynamic driving when operating in a sporty mode. In particular, the operating strategy is never adapted to the characteristics (length, track layout, topology) of a specific racetrack. Consequently, the drive energy available from an electrical energy storage device can be depleted too quickly, so that no sporty driving behavior is discernible for the remaining distance. Patent document DE 198 07 291 A1 illustrates an exemplary method for operating a motor vehicle with a hybrid drive.

[0004] The patent documents DE 10 2005 055 243 A1, DE 10 2006 045 824 A1, DE 10 2008 061 512 A1, DE 10 2009 039 374 A1, DE 10 2010 008 019 A1 and DE 10 2010 016 328 A1 were also used in the granting procedure.

[0005] The object of the invention is to better condition a motor vehicle to this mode when driving in a sport operating mode on a dedicated track.

[0006] This problem is solved by the method according to claim 1 or the motor vehicle according to claim 14. Further developments of the invention are defined in the dependent claims.

[0007] The method according to the invention serves to operate a motor vehicle that is driven by a drive unit comprising an internal combustion engine and at least one electric machine supplied via an electrical energy storage device. In particular, the motor vehicle is a hybrid vehicle in which an internal combustion engine and at least one electric machine can be used to drive the vehicle. In the description of preferred variants of the method according to the invention below, the motor vehicle can be a hybrid vehicle if only the internal combustion engine is mentioned in the corresponding variant. If, on the other hand, only an electric machine is mentioned in a variant, the vehicle can be a hybrid vehicle or a purely electric vehicle. If both an internal combustion engine and an electric machine are mentioned, the vehicle is a hybrid vehicle.

[0008] In the method according to the invention, a number, and in particular several, predetermined routes with respective three-dimensional route profiles are stored in a vehicle navigation system. The route is thus characterized by position data on the Earth's surface and corresponding altitude information. In the method according to the invention, the navigation system detects when the vehicle is traveling on a predetermined route (i.e., on any of the stored predetermined routes), and during this journey, the vehicle is operated in a sport mode with increased driving dynamics of the drive unit compared to a normal operating mode. The driving dynamics of the drive unit relate to its acceleration capability and / or its response time to changes in the accelerator pedal position.According to the enhanced driving dynamics, the vehicle's acceleration capability on the road is thus increased compared to normal operating mode, or the combustion engine's response time to changes in accelerator pedal position is reduced compared to normal operating mode. The term "enhanced driving dynamics" means that, over the entire route or on average over the route, there is a higher level of driving dynamics than in normal operating mode.

[0009] The sport operating mode used in the method according to the invention is characterized in that, in this mode, the operation of the drive unit is adapted depending on the current position and direction of travel of the motor vehicle, which are detected via the navigation system, as well as the route profile of the detected predetermined route. In this way, the operating strategy of the drive unit can be adapted to the topology and sequence of curves of the route.

[0010] In a preferred embodiment of the method according to the invention, when the motor vehicle is traveling in a section of the predetermined route immediately preceding a section with high recuperation of electrical energy from braking energy in the electrical energy storage system, additional drive power is provided by at least one electric machine, supplementing the drive power of the internal combustion engine. Alternatively or additionally, a load point increase of the internal combustion engine for faster charging of the electrical energy storage system, which would occur in normal operating mode, can be suppressed. This utilizes the fact that more power can be drawn from the electrical energy storage system in a section of the route preceding a section with high recuperation, and thus more drive power is available in such sections.The sections with high recuperation can be defined differently depending on the application. In particular, predetermined curve sections and / or downhill sections of the route profile are defined as sections with high recuperation. This information is stored in the navigation system along with the route profile.

[0011] In a further embodiment of the method according to the invention, in a section of the predetermined route, in which increased spontaneity of the drive unit is to be provided, the drive power of the at least one electric machine is increased to compensate for dynamic delays of the internal combustion engine (specifically known as turbo lag).

[0012] This process also simultaneously reduces and / or deactivates a comfort function of the drive unit, namely the damping of torque delivery to the vehicle's drive wheels during accelerator pedal changes. This allows for very precise control and response times, and thus a very sporty driving experience, on certain stretches of road.

[0013] If necessary, several comfort functions of the drive unit can be simultaneously reduced and / or deactivated. This allows for very precise power delivery and response time, resulting in a very sporty driving experience, in certain sections of the track. Predetermined sections or curves on the track are preferably defined as the areas where increased responsiveness of the drive unit is required.

[0014] In a further embodiment of the method according to the invention, when the vehicle is stationary with the combustion engine running on a predetermined route, the load point of the combustion engine is raised to accelerate the charging of the electrical energy storage device. This ensures that when the vehicle resumes driving, the energy storage device is more highly charged and thus more energy can be drawn from it. As a further side effect, the drive system is already pre-tensioned in this case, so that turbo lag can be reduced and a dynamic start-up is possible.

[0015] In a further embodiment of the method according to the invention, when driving through a curve on a predetermined route, the gear ratio of an automatic transmission of the motor vehicle is adjusted based on a criterion of fast cornering, depending on the upcoming curve profile. Similarly, when driving through a curve on a predetermined route, a shift point indicator for the driver of a manual transmission of the motor vehicle can be adjusted based on a criterion of fast cornering, depending on the upcoming curve profile. The corresponding implementation of a criterion of fast cornering is within the scope of what is considered skilled work and is therefore not described in detail.

[0016] In a further embodiment of the method according to the invention, the at least one electric motor of the drive unit is engaged in sport mode for the duration of the journey on the predetermined route, supplementing the combustion engine to propel the vehicle in such a way that a predetermined state of charge of the electrical energy storage device is reached at the end of the journey. This ensures that the electrical energy storage device is discharged to a defined target level at the end of the journey. Thus, the electrical energy storage device is neither prematurely discharged completely nor does excess electrical energy remain in the energy storage device. Preferably, the predetermined state of charge is below a minimum state of charge that is valid in the normal operating mode of the vehicle.This temporarily allows a greater discharge of the electrical energy storage for the sport operating mode, so that more electrical power is available to drive the vehicle.

[0017] In another embodiment, the cooling power provided by the combustion engine for cooling the electrical energy storage device in sport mode is controlled for the duration of the journey over the predetermined route in such a way that the temperature of the electrical energy storage device reaches a predetermined temperature at the end of the journey. The cooling power is supplied to a cooling circuit in the vehicle in a suitable manner. This embodiment of the invention ensures that a predetermined maximum temperature of the energy storage device is reached only at the end of the journey and not at an earlier point in time. This guarantees that sufficient cooling of the energy storage device via the combustion engine is always possible without having to reduce the power output from the energy storage device.The predetermined temperature reached at the end of the journey on the predetermined route is preferably higher than the maximum temperature of the electrical energy storage device in normal operating mode. This allows for temporarily higher temperatures of the energy storage device and thus a higher power output from the energy storage device in sport mode.

[0018] In a further embodiment of the method according to the invention, a user interface is provided in the motor vehicle via which the driver can enter a frequency indicating how often consecutively he or she wishes to drive the predetermined route, the frequency influencing one or more parameters of the sport operating mode. In particular, the frequency influences the duration of the journey on the predetermined route, which is taken into account in the previously described variants of the method according to the invention.

[0019] In a further, particularly preferred embodiment, one or more of the following measures are carried out in a period of time before the vehicle reaches a predetermined distance. Firstly, the load point of the internal combustion engine can be increased to charge the electrical energy storage device more quickly, so that more electrical energy is available for the subsequent journey on the predetermined route. Likewise, the cooling capacity provided by the internal combustion engine for cooling the electrical energy storage device can be increased and, in particular, set to maximum cooling capacity, so that the energy storage device is well pre-cooled for operation of the vehicle on the predetermined route. As a result, more power can be drawn from the electrical energy storage device, since the energy storage device later reaches its maximum permissible temperature.Furthermore, the range of permissible state-of-charge values ​​for the electrical energy storage system, valid during normal vehicle operation, can be increased. This allows more electrical power to be drawn from the energy storage system while driving on the predetermined route.

[0020] In a preferred variant, the start of the above time period, before the motor vehicle reaches a predetermined route, is linked to the fact that the driver specifies a predetermined route as the destination in the navigation system and / or that the vehicle is moving towards the predetermined route and has a distance to the predetermined route below a threshold value.

[0021] In a further embodiment, the method according to the invention can also include an analysis function. After driving on the predetermined route, performance data of the vehicle for various positions during the preceding drive are output via a user interface of the vehicle. The performance data can relate, for example, to accelerations and / or reaction times of the drive unit or to other performance values. Optionally, a driving dynamics value can also be output, which is calculated from the performance data of the vehicle for various positions during the preceding drive.

[0022] The determination of a corresponding driving dynamics value from performance data falls within the scope of professional practice and is therefore not explained in more detail.

[0023] In addition to the method described above, the invention further relates to a motor vehicle that can be driven by a drive unit comprising an internal combustion engine and / or at least one electric machine powered by an electrical energy storage device, in particular a hybrid vehicle. The motor vehicle includes a navigation system in which a number of predetermined routes with three-dimensional route profiles are stored, wherein the navigation system recognizes when the vehicle is traveling on a predetermined route (i.e., on any of the predetermined stored routes).Furthermore, the motor vehicle is provided with a control unit which is designed in such a way that it operates the motor vehicle in a sport mode with increased driving dynamics of the drive unit compared to a normal operating mode when driving on a predetermined route recognized by the navigation system, wherein in sport mode the operation of the drive unit is adapted depending on the current position and direction of travel of the motor vehicle, which are recorded via the navigation system, as well as the route profile of the recognized predetermined route.

[0024] The motor vehicle described above is preferably designed in such a way that it is equipped to carry out one or more of the preferred variants of the method according to the invention described above.

[0025] Exemplary embodiments of the invention are described in detail below with reference to the accompanying figures.

[0026] They show: Fig. 1 a schematic representation of a predetermined route with a motor vehicle located thereon, which is operated based on an embodiment of the method according to the invention; and Fig. 2 a diagram illustrating an adjustment of the state of charge of an electrical energy storage device in a motor vehicle based on a variant of the method according to the invention.

[0027] An embodiment of the method according to the invention, based on a motor vehicle in the form of a hybrid vehicle, is described below. The drive unit of this vehicle comprises both an internal combustion engine and an electric machine, which can be used in parallel to propel the vehicle. The electric machine is supplied with energy via an electrical energy storage device (hereinafter also referred to as a battery). Instead of a single electric machine, the vehicle may optionally include several electric machines. The variant of the method according to the invention described here is implemented in a control unit in the motor vehicle, which interacts with a navigation system in the motor vehicle. The navigation system contains several predefined routes with corresponding three-dimensional route profiles.These are suitable routes that the driver of the vehicle can drive with very high driving dynamics. Therefore, these routes will henceforth be referred to as racetracks. If necessary, the racetracks can also be actual racing circuits not approved for public road traffic. The invention enables the driver of the motor vehicle to drive such racetracks in a special operating mode of the vehicle, which is referred to as the sport operating mode. In this operating mode, the driving dynamics of the drive unit are significantly higher than in the normal operating mode of the motor vehicle.

[0028] In Fig. Figure 1 shows a top view of a race track S stored in the navigation system. This is a closed race circuit. A vehicle 1 is located on the race track and is operated according to the variant of the method according to the invention described below. The direction of travel of the vehicle is represented by the arrow P. Furthermore, two track sections A and A' are indicated by way of example, which will be discussed in more detail below. In the embodiment described here, the vehicle's navigation system detects when the driver intends to drive on race track S. This detection can occur if the driver enters the corresponding race track as a destination into the navigation system. The navigation system can also detect that the vehicle is approaching the race track. This can be determined using suitable criteria.For example, an approach of the vehicle to the race track can be detected if the direction of the vehicle points towards the race track and the distance of the vehicle to the race track is below a certain threshold.

[0029] If the navigation system detects that the driver intends to use race track S, preparatory measures are initiated before the vehicle actually enters the track and switches to Sport mode. In the variant described here, the vehicle's battery charge level is increased by raising the combustion engine's load point, thus generating more mechanical energy from the engine, which is then converted into more electrical energy for the battery. Raising the load point results in increased engine noise. In Normal mode, the vehicle adheres to predetermined acoustic limits, which are disregarded when preparing for Sport mode. Furthermore, to condition Sport mode, a range of battery charge levels usable in Normal mode is used, e.g.,The battery's charge level is adjusted between 30% and 70% of its full charge, allowing for both deeper discharges and higher charging cycles. This means that, for the sport mode, it is accepted that certain charge level limits will be exceeded, thus reducing the battery's lifespan. However, since the sport mode is not used continuously, the reduction in battery life remains within acceptable limits. Furthermore, to prepare for sport mode, the vehicle's cooling system, which cools the battery, is set to maximum cooling, ensuring that the battery can deliver increased power without overheating during sport mode.

[0030] Following the measures just described before reaching the racetrack, the vehicle is finally switched to Sport mode once on the track. This mode is designed to enhance the driving dynamics of the powertrain compared to Normal mode, meaning the vehicle can accelerate faster and reacts more spontaneously to acceleration.

[0031] In the sport operating mode, the operation of the drive unit is adapted depending on the current position and direction of travel of the vehicle as well as the track profile of track S, in order to adjust the driving dynamics appropriately depending on the requirements on the race track and at the same time to ensure that the electrical energy storage is optimally, but not completely, discharged or overheated.

[0032] In one variant for adapting the operating strategy, the so-called boost function and recuperation function are activated or varied depending on the topology and the sequence of curves of the track, which is determined by the three-dimensional track profile, taking into account the current position and direction of travel of the vehicle on the track. Using the boost function, electrical power is provided by the vehicle's electric motor in addition to the drive power of the combustion engine when the vehicle accelerates. According to the recuperation function, electrical energy is recovered from the vehicle's braking energy. Fig. Figure 1 illustrates the activation or enhancement of the vehicle's boost function for section A. The vehicle recognizes, based on the road profile, that section A is a long, essentially straight section followed by section A', which is a curve. Since electrical energy from the energy storage system is recuperated via braking energy before a curve, the boost function is activated in section A. This leads to a faster discharge of the electrical energy storage system; however, it is subsequently recharged during recuperation in curve A', thus allowing for a faster discharge in section A. Similarly, a load point increase of the combustion engine, which would occur in normal operating mode, can be suppressed in section A, as a recuperation phase is imminent anyway.The combustion engine's power can thus be used exclusively for propulsion. Similarly, on straight sections without a subsequent extended recuperation phase, the boost function can be reduced accordingly, so that the entire boost potential is not consumed on the first straight of the straight sequence, but is also available for subsequent accelerations.

[0033] Fig.Figure 2 shows a diagram illustrating the state of charge (SOC) of the battery in the motor vehicle 1 for a variant of the method according to the invention. It depicts the state of charge as a function of position s on a track of length r, which represents one lap of a closed race track. The battery discharge is optimized for the duration of the lap. Similarly, the optimization can optionally be performed over several laps, in which case the driver can specify the desired number of laps via a user interface in the motor vehicle.

[0034] At the start of the drive on the racetrack, the battery's state of charge (SOC) is set to SOC1. Due to the preconditioning described above, this value is significantly higher than the corresponding maximum value valid in the vehicle's normal operating mode. During the drive, the state of charge varies due to the different track sections and the associated variations in the operation of the combustion engine and the electric motor. Nevertheless, a general decrease in the state of charge can be observed. Optimized, this variation is adjusted so that a minimum state of charge (SOC2) is reached at the end of the drive. This ensures that the vehicle is not completely discharged during the drive. The SOC2 state of charge is lower than the corresponding minimum state of charge of the battery in normal operating mode.This allows for a greater discharge of the battery, so that more power is available from the battery while driving on the racetrack.

[0035] In further embodiments of the method according to the invention, the cooling power provided by the combustion engine for cooling the battery is adjusted analogously to the state of charge, such that the battery temperature rises to a maximum predetermined temperature and does not reach this maximum temperature before the end of the journey. This prevents the power draw from the battery from being limited to lower the battery temperature. The predetermined temperature reached at the end of the journey can optionally be set higher than the maximum battery temperature permitted in normal operating mode.

[0036] In a further embodiment of the method according to the invention, in sections of the road with high lateral accelerations (especially in predetermined curve sections), the operation of the electric machine is adapted in such a way that delays in the acceleration behavior of the combustion engine (so-called turbo lag) are compensated for by the electric machine. This makes the behavior of the drive unit significantly more spontaneous when cornering. At the same time, comfort functions of the vehicle's drive unit can be reduced or deactivated, in particular damping of the torque delivery to the drive wheels of the vehicle when the accelerator pedal is changed.

[0037] In another variant, battery charging is accelerated during periods of inactivity on the racetrack, achieved by increasing the load point of the combustion engine. This disregards the noise limits imposed on the combustion engine during normal operation. This variant takes into account that periods of inactivity with the engine running indicate a rapid acceleration is imminent. For example, on a real racetrack, the vehicle might be in the pit lane or on the start / finish straight shortly before the start.

[0038] The vehicle may also be equipped with an integrated analysis function that allows the driver to view relevant measured values ​​or electrical performance data for the vehicle or its drive unit at any point on the track after driving. This can, for example, provide the driver with tips for optimizing braking point selection. The driver may also be able to manually adjust the sport driving mode. The specific design of a suitable analysis function is a matter for expert consideration.

[0039] The embodiments of the method according to the invention described above offer a number of advantages. In particular, a motor vehicle is suitably conditioned for driving on a high-speed track by using the navigation system to adapt the operation of the drive unit to the corresponding track profile when driving on the racetrack. This increases the reproducibility of the driving performance in sport mode, and the driver experiences a sporty and intelligent vehicle with enhanced performance compared to a conventionally powered vehicle with the same engine. Reference sign 1 motor vehicle P Direction of travel of the motor vehicle S race track A, A' sections of the race track SOC battery charge level SOC1, SOC2 limits of the battery's state of charge s track position r lap length

Claims

[1] Method for operating a motor vehicle (1) which is driven by a drive unit comprising an internal combustion engine and at least one electric machine supplied via an electrical energy storage device, wherein: - a number of predetermined routes (S) with three-dimensional route profiles are stored in a motor vehicle navigation system (1); - the navigation system detects that the motor vehicle (1) is traveling on a predetermined route (S) and that the motor vehicle (1) is operated in a sport mode with increased driving dynamics of the drive unit compared to a normal operating mode, wherein in sport mode the operation of the drive unit is adapted depending on the current position and direction of travel (P) of the motor vehicle (1), which are detected by the navigation system, as well as the route profile of the predetermined route (S), - in a section (A') of the predetermined route (S) where increased spontaneity of the drive unit is to be provided, the drive power of at least one electric machine is increased to compensate for dynamic delays of the internal combustion engine, and - a damping of torque delivery to drive wheels of the motor vehicle (1) during changes in the accelerator pedal, in the section (A') of the predetermined route (S) in which the increased spontaneity of the drive unit is to be provided, is reduced and / or switched off. [2] Method according to claim 1, characterized by, that when the motor vehicle (1) travels in a section (A) of the predetermined route (S) which lies immediately before the section (A') with high recuperation of electrical energy in the electrical energy storage from braking energy, additional drive power is provided by at least one electric machine in addition to the drive power of the internal combustion engine and / or a load point increase of the internal combustion engine is suppressed for faster charging of the electrical energy storage. [3] Method according to claim 2, characterized by , that sections with high recuperation are predetermined curve sections and / or downhill sections of the route profile of the predetermined route (S). [4] Method according to any one of the preceding claims, characterized by, that in the section (A') of the predetermined route (S) where the increased spontaneity of the drive unit is to be provided, several comfort functions of the drive unit are reduced and / or switched off. [5] Method according to any one of the preceding claims, characterized by , that as sections (A') of the predetermined route (S) in which the increased spontaneity of the drive unit is to be provided, predetermined curves (A') are defined on the predetermined route (S). [6] Method according to any one of the preceding claims, characterized by , that during a stationary period of the motor vehicle (1) with the internal combustion engine running on the predetermined route (S) a load point of the internal combustion engine is raised to allow for faster charging of the electrical energy storage device. [7] Method according to any one of the preceding claims, characterized by, that when driving through a curve of the predetermined route (S) depending on an upcoming curve profile, a gear ratio of an automatic transmission of the motor vehicle (1) is adjusted based on a criterion of fast cornering and / or a shift point indicator for the driver of a manual transmission of the motor vehicle (1) is adjusted based on a criterion of fast cornering. [8] Method according to any one of the preceding claims, characterized by, that the at least one electric machine of the drive unit in sport mode is switched on to propel the motor vehicle (1) in addition to the combustion engine for a duration of the journey on the predetermined route (S) in such a way that at the end of the journey on the predetermined route (S) a predetermined state of charge (SOC2) of the electrical energy storage is reached, which is preferably below a minimum state of charge in the normal operating mode of the motor vehicle (1). [9] Method according to any one of the preceding claims, characterized by, that a cooling power provided by the combustion engine for cooling the electrical energy storage in sport mode is controlled in such a way that at the end of the journey on the predetermined route (S) the temperature of the electrical energy storage reaches a predetermined temperature, which is preferably higher than a maximum temperature of the electrical energy storage in normal operating mode. [10] Method according to any one of the preceding claims, characterized by , that in the motor vehicle (1) a user interface is provided through which the driver can enter a frequency which indicates how many times in succession he wishes to drive the predetermined route (S), wherein the frequency influences one or more parameters of the sport operating mode. [11] Method according to any one of the preceding claims, characterized by, that in a period of time before the motor vehicle (1) reaches a predetermined distance (S), one or more of the following actions are carried out: - the load point of the combustion engine is raised to allow for faster charging of the electrical energy storage device; - The cooling capacity provided by the combustion engine for cooling the electrical energy storage device is increased and, in particular, set to maximum cooling capacity; - a range for permissible values ​​of the state of charge (SOC) of the electrical energy storage, which is valid in the normal operating mode of the motor vehicle (1), is increased. [12] Method according to claim 11, characterized by, that the start of the time period is linked to the fact that the driver specifies a predetermined route (S) as the destination in the navigation system and / or that the motor vehicle (1) is moving towards the predetermined route (S) and is below a threshold distance to the predetermined route (S). [13] Method according to any one of the preceding claims, characterized by , that after the journey on the predetermined route (S) via a user interface of the motor vehicle (1) performance data of the motor vehicle (1) for different positions during the previous journey are output and / or a driving dynamics value is output which is calculated from performance data of the motor vehicle (1) for different positions during the previous journey. [14] Motor vehicle (1) which can be driven by a drive unit comprising an internal combustion engine and / or at least an electric machine supplied via an electrical energy storage device, in particular a hybrid vehicle, wherein the motor vehicle (1) comprises: - a navigation system in which a number of predetermined routes (S) with three-dimensional route profiles are stored, wherein the navigation system recognizes a journey of the motor vehicle (1) on a predetermined route (S); - a control unit designed to operate the motor vehicle (1) in a sport mode with increased driving dynamics of the drive unit compared to a normal operating mode when driving on a predetermined route (S) recognized by the navigation system, wherein in sport mode the operation of the drive unit is adapted depending on a current position and direction of travel (P) of the motor vehicle (1) detected by the navigation system and the route profile of the predetermined route (S), - in a section (A') of the predetermined route (S) where increased spontaneity of the drive unit is to be provided, the drive power of at least one electric machine is increased to compensate for dynamic delays of the internal combustion engine, - a damping of torque delivery to drive wheels of the motor vehicle (1) during changes in the accelerator pedal, in a section (A') of the predetermined route (S) in which the increased spontaneity of the drive unit is to be provided, is reduced and / or switched off. [15] Motor vehicle (1) according to claim 14, which is equipped to carry out a method according to any one of claims 2 to 13.

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