EP2955357A1 - Procédé pour un fonctionnement par roulement d'un véhicule automobile équipé d'un moteur à combustion interne - Google Patents

Procédé pour un fonctionnement par roulement d'un véhicule automobile équipé d'un moteur à combustion interne Download PDF

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Publication number
EP2955357A1
EP2955357A1 EP15000915.7A EP15000915A EP2955357A1 EP 2955357 A1 EP2955357 A1 EP 2955357A1 EP 15000915 A EP15000915 A EP 15000915A EP 2955357 A1 EP2955357 A1 EP 2955357A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
engine
combustion engine
rolling
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP15000915.7A
Other languages
German (de)
English (en)
Inventor
Rolf DÖBEREINER
Wolfgang Zieglmaier
Daniel Zoth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN Truck and Bus SE
Original Assignee
MAN Truck and Bus SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Truck and Bus SE filed Critical MAN Truck and Bus SE
Publication of EP2955357A1 publication Critical patent/EP2955357A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • F01L2013/001—Deactivating cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D2041/001—Controlling intake air for engines with variable valve actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501—Vehicle speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/701—Information about vehicle position, e.g. from navigation system or GPS signal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/702—Road conditions

Definitions

  • the invention relates to a method for a rolling operation of a motor vehicle with internal combustion engine, in particular a commercial vehicle.
  • the invention relates to a method for a rolling operation, in which the internal combustion engine is towed in uncontrolled operation with the drive train closed.
  • motor vehicles are operated at suitable distances, in particular gradients, in a so-called roll or sail mode.
  • the sailing mode of a motor vehicle or hybrid vehicle known to those skilled in the art is that the kinetic energy of the motor vehicle is used in roll phases in order to maintain the highest possible rolling speed and thus to achieve the highest possible rolling distance.
  • the engine of the vehicle decoupled from the rest of the drive train which happens by opening the clutch or by a neutral circuit in the transmission to reduce the braking effect of the drag torque of the engine.
  • the following to a rolling phase train phase can be due to the obtained rolling speed or Rolling distance achieved at a later date and / or carried out with lower engine power. This results in a potential for saving fuel.
  • a disadvantage of this mode of operation is that the engine runs in idle mode, whereby the fuel consumption reduction potential is reduced.
  • auxiliary consumers such as the generator or the air compressor are no longer powered.
  • this variant is therefore associated with disadvantages, in particular, there for vehicle operation Of commercial vehicles important ancillaries (eg., The air compressor or the power steering pump) must continue to be driven reliably even when rolling.
  • An alternative known variant for saving fuel during vehicle roll phases is a rolling operation in which the fuel supply of the engine is interrupted during a rolling phase. The engine remains coupled to the powertrain and towed unbefued. This operation is also referred to as coasting with fuel cut or engine brake operation. Part of the kinetic energy is expended for the required drive power of the ancillaries.
  • This mode of operation enables a potential for saving fuel by avoiding the engine idling operation and ensures the supply of the ancillaries.
  • a disadvantage of this mode of operation the resulting drag power loss, z. B. due to friction losses of the unfired operation of the engine. This towing power brakes the vehicle and thus reduces the kinetic energy of the vehicle.
  • the object of the invention is in particular to provide a rolling operation method with improved fuel efficiency, which simultaneously enables safe operation of the ancillaries.
  • a method for a rolling operation of a motor vehicle with an internal combustion engine is proposed, in particular such a method for a commercial vehicle, wherein in rolling operation of the internal combustion engine in the unfired mode and with the drive train closed, d. H. with not separated traction, is towed.
  • the fuel supply is thus interrupted, and the engine is dragged through the vehicle, so kept in rotational motion.
  • Such a rolling operation is also referred to as pushing operation.
  • the rolling operation takes place with a reduced engine drag torque or reduced engine drag power.
  • the motor vehicle comprises means for reducing a motor drag torque and thus a motor towing power of the internal combustion engine, by means of which the engine towing power is reduced during the rolling operation, so that the internal combustion engine is towed in the rolling operation with the reduced engine towing capacity.
  • a particular advantage of the invention is thus that in comparison to a conventional overrun friction losses are reduced in towing mode and consequently also the resulting vehicle deceleration.
  • the subsequent to a rolling phase pulling phase due to the obtained higher rolling speed or achieved further rolling distance at a later time and / or take place with lower engine power.
  • the supply and the drive of the ancillaries can be ensured.
  • the means for reducing a motor towing capacity are designed so that all auxiliary units can be sufficiently supplied by the towed motor and the remaining power loss of the engine as small as possible.
  • the invention is not limited to a particular choice with regard to the choice of the means for reducing a motor towing performance and / or not limited to a specific structure with regard to the structural design of these means.
  • the means for reducing the engine towing capacity can be designed to change a valve train in the rolling mode so that a to be performed by the internal combustion engine in the non-fired operation compression work and / or charge exchange work is reduced, so that the rotation of the internal combustion engine takes place against a lower resistance and therefore can be achieved with less mechanical energy.
  • a per se known decompression brake can be used so that it is used in roll mode for a targeted cylinder decompression.
  • the means for reducing the engine towing capacity may comprise a locking device which is adjustable so as to prevent the closing of one or more exhaust valves of the cylinders of the internal combustion engine. This results in a targeted decompression of the cylinder and there is no drag power loss due to the compression work to be done.
  • the locking device is adjustable so that it can move a rocker arm and / or a rocker shaft, which are operatively connected to a cylinder outlet valve for opening and closing the same, such that the exhaust valve remains in an open state.
  • the locking device may be provided as a locking pin, which can be made in rolling mode so that it can be brought into engagement with a detent on the rocker shaft and thus blocks further rotation of the rocker shaft in a cylinder outlet valve in a closed position rotary position.
  • This variant has the advantage that conventional internal combustion engines with a minor structural modification by attaching the adjustable locking device, for. B. the locking pin, are adapted so that they allow the rolling operation with reduced engine drag torque.
  • the means for reducing the engine drag power can cause a shutdown of the valve train of the cylinder, such that a cylinder operation takes place with closed valves without charge change.
  • the cylinders consequently act as gas springs, which return the applied compression work after reaching the top dead center to a large extent again, so that the compression work to be applied is reduced compared to a normal valve train.
  • the method for the rolling operation may comprise the following steps: setting an upper and lower threshold value for vehicle acceleration in rolling operation; and predicting an acceleration course of the vehicle for the rolling operation as a function of topography data for a predefined route ahead of the route; wherein the roll operation is activated upon reaching or beginning of a downgrade section for which the predicted acceleration history has been predicted to be greater than a minimum duration or minimum distance within the upper and lower vehicle acceleration thresholds.
  • the vehicle acceleration upper and lower thresholds thus indicate a suitable range in which the vehicle acceleration is in a range favorable for the rolling operation.
  • the previously activated rolling operation can be deactivated if the current vehicle speed, the vehicle acceleration or a gradient on a current position of a travel route exceed predefined threshold values for these variables.
  • the prediction of the acceleration curve of the vehicle for the rolling operation with reduced towing power can be carried out using a vehicle model that indicates an acceleration behavior of the vehicle in non-fired operation as a function of the topography of the route and the current speed.
  • the vehicle model can be stored in the form of a characteristic in the cruise control system.
  • the vehicle model may for example take into account a load state, a total weight, an axle load, a rolling friction resistance, a flow resistance of the motor vehicle and / or a loss resistance of the drive unit caused by components of the drive unit. Based on these parameters, an acceleration behavior of the vehicle can be calculated in non-fired operation, for example in coasting or in coasting mode.
  • Another aspect of the invention relates to a device for controlling an operation of a motor vehicle with an internal combustion engine, in particular a commercial vehicle, wherein the device for carrying out the method, as described above, is set up.
  • Another aspect of the invention relates to a commercial vehicle with such a device.
  • FIG. 1 illustrates by way of example a flow chart of a method for the rolling operation according to an embodiment.
  • FIG. 2B This shows the FIG. 2B the topography of a route of the vehicle 4 as a relative height curve.
  • the in FIG. 2B shown section shows a stretch of road with a longer slope.
  • the vehicle is at the beginning of the downhill section.
  • step S1 the preceding road section is continuously monitored by a vehicle control device to determine a suitable driving situation in which the rolling operation can be activated.
  • a suitable driving situation in which the rolling operation can be activated.
  • This can be done, for example, in a manner known per se by a precalculation of the occurring vehicle deceleration and taking into account the setpoint speed of the vehicle, for example a maximum speed predetermined for commercial vehicles.
  • An overshoot or undershoot of the target speed is permitted within certain limits for the use of flywheel tips, so that the rolling can take place in certain acceleration limits.
  • the prediction of the acceleration course of the vehicle for the rolling operation can be carried out as a function of topographical data for a predefined route section 5 of the route lying ahead.
  • the pre-calculation of the acceleration curve of the vehicle for the rolling operation with reduced towing power is performed using a vehicle model, which indicates an acceleration behavior of the vehicle in non-fired operation depending on the topography of the route and the current speed.
  • the vehicle model may take into account a load state, a total weight, an axle load, a rolling friction resistance, a flow resistance of the motor vehicle and / or a loss resistance of the drive unit caused by components of the drive unit.
  • Such vehicle models and calculating the acceleration of the vehicle in non-fired operation on downhill slopes are known per se from the prior art and need not be described in more detail here. Such approaches are for example from the DE 10 2006 001 818 A1 or the DE 10 2010 005 045 A1 known.
  • the topography of a route can be provided as topography data from a navigation device.
  • the navigation device can also provide the current vehicle position and direction and assign the stored topography of the route.
  • FIG. 2A shows a stored in the vehicle control curve 3, the vehicle acceleration a (Y-axis in FIG. 2A ) in rolling operation as a function of the road gradient s (X-axis in FIG. 2A ) indicates. Furthermore, a predetermined upper threshold value 1 and a lower threshold value 2 for a vehicle acceleration a enter into the method. Such thresholds are not firmly defined, but freely parameterizable depending on the vehicle.
  • the roll operation is activated at the beginning of a downgrade section for which the predicted acceleration history has been predicted to be greater than a minimum duration or minimum distance within the vehicle acceleration upper and lower thresholds 1, 2. Upon reaching the in FIG. 2B shown vehicle conditions, these conditions are met, so that the rolling operation of the vehicle control device according to the steps S2 and S3 is activated.
  • the determination of a suitable driving situation in which the rolling operation can be activated even without the use of topography and GPS data or without a precalculation of the occurring vehicle deceleration.
  • the rolling operation without foresight only based on the current vehicle condition, eg. B. depending on the vehicle speed and the slope, initiated.
  • the duration of the rolling phase can then not be determined at the same time when the rolling operation is initiated, but the rolling operation is in turn terminated on the basis of the current vehicle condition, for example if the vehicle speed and / or the gradient fall below predetermined threshold values.
  • step S2 first the rolling operation is activated, d. h., the fuel supply is interrupted, and the engine is dragged by the vehicle, so kept in rotational motion. Here the drive train remains closed.
  • step S3 the engine drag torque is then reduced.
  • a locking pin on the rocker shaft which is set for the rolling operation so that it can be brought into engagement with a detent on the rocker shaft and thus further rotation of the rocker shaft in the cylinder outlet in a closed position rotary position blocked.
  • Such a locking device in the form of the locking pin is the so-called Rocker-Stop Device (RSD) from Jacobs Vehicle Systems®.
  • RSD Rocker-Stop Device
  • the use of such a device has hitherto been used to accelerate an engine start-up operation by targeted decompression of the cylinders of the internal combustion engine or to reduce the vehicle vibrations when the engine and the vehicle are switched off.
  • this known device can also be used for targeted reduction of engine drag torque in the towed taxiing operation.
  • a further variant for reducing the engine drag torque is to effect a shutdown of the valve train of the cylinders, such that cylinder operation takes place with the valves closed, without any charge exchange.
  • the cylinders consequently act as gas springs, which return the applied compression work after reaching the top dead center to a large extent again, so that the compression work to be applied is reduced compared to a normal valve train.
  • Such an approach is known in the automotive sector for partial shutdown of cylinders at low speed ranges, but still a portion of the cylinder is fired, the efficiency increases because the operating points shift towards higher loads.
  • the combustion chambers of the non-fired cylinder are once again filled with air, z. B. with fresh gas or exhaust gas.
  • This trapped air leads to a minimum pressure in the cylinder and a correspondingly low energy consumption.
  • the closing of the valves via a special actuator takes place on the inlet and the exhaust camshaft ever two sliding sleeves, the so-called cam pieces, on special gears. They are responsible for valves of the cylinders.
  • Each cam piece carries two different profiles next to each other at its ends: a conventional solid profile and a so-called zero-stroke cam.
  • the full profiles operate in normal fired cylinder operation, the roller rocker arms and on these the valves. They behave like conventional cams.
  • the zero-stroke cams in turn rotate over the drag levers. You do not press it, the valve springs keep the valves closed. At the same time the engine management stops the injection. In the outer sides of the rotating cam pieces helical grooves are milled, over which the sleeves can move lightning fast by a few millimeters on the waves. If electromagnetic actuators in the cylinder head cover signal through the motor control system, two integrated metal pins engage the grooves from outside and bring them into their final position. From spring-loaded balls, the cam pieces are finally locked.
  • this actuator can be modified so that all cylinder valves are closed and all cylinders are operated with closed valves in non-fired trailing.
  • the vehicle 4 rolls in the towed mode, d. H. closed driveline, and with reduced engine drag torque down the slope 5.
  • the fuel consumption in this state is zero.
  • the roll phase can be extended as the vehicle experiences less deceleration.
  • FIG. 3B shows a driving state of the rolling operation in the middle of the slope.
  • FIG. 3A shows the corresponding value of the vehicle acceleration at this point, which is within the predetermined thresholds 1, 2.
  • the roll mode is terminated when, due to a grade change, the vehicle acceleration or speed is outside the allowable limits for the roll operation (step S4).
  • FIG. 4B illustrating the vehicle 4 after passing through the slope and at the beginning of a slope. In this case, the vehicle is braked so much during towing that the vehicle acceleration drops below the lower threshold value 2, which in FIG. 4A is illustrated.
  • the roll mode is then terminated, with the means for reducing engine drag performance first reversing the drag performance, and then transferring the engine from driveline to fired mode to continue driving in normal fired operation and with unrestrained drag torque (Step S5).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP15000915.7A 2014-06-07 2015-03-28 Procédé pour un fonctionnement par roulement d'un véhicule automobile équipé d'un moteur à combustion interne Pending EP2955357A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014008918.5A DE102014008918A1 (de) 2014-06-07 2014-06-07 Verfahren für einen Rollbetrieb eines Kraftfahrzeugs mit Verbrennungsmotor

Publications (1)

Publication Number Publication Date
EP2955357A1 true EP2955357A1 (fr) 2015-12-16

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EP15000915.7A Pending EP2955357A1 (fr) 2014-06-07 2015-03-28 Procédé pour un fonctionnement par roulement d'un véhicule automobile équipé d'un moteur à combustion interne

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DE (1) DE102014008918A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3406886A1 (fr) * 2017-05-18 2018-11-28 MAN Truck & Bus AG Procédé de fonctionnement pour un système d'aide à la conduite et véhicule automobile
CN110121452A (zh) * 2017-01-19 2019-08-13 舍弗勒技术股份两合公司 用于控制具有自动化离合器的车辆的滑行运行的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021128148A1 (de) 2021-10-28 2023-05-04 Volkswagen Aktiengesellschaft Verfahren zum Betreiben einer Brennkraftmaschine in einem Fahrzeug, Fahrzeug, Computerprogrammprodukt und Speichermittel

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DE2416180A1 (de) * 1974-04-03 1975-10-16 Daimler Benz Ag Motorbremse fuer ventilgesteuerte mehrzylinderbrennkraftmaschinen
DE3610131A1 (de) * 1986-03-26 1987-09-17 Bayerische Motoren Werke Ag Brennkraftmaschine, insbesondere dieselmotor, als antriebseinrichtung fuer fahrzeuge
DE10329022A1 (de) * 2003-06-27 2005-01-27 Daimlerchrysler Ag Verfahren zur Vergrößerung des Schleppmoments einer Brennkraftmaschine
DE102006001818A1 (de) 2006-01-13 2007-07-19 Man Nutzfahrzeuge Ag Verfahren und Vorrichtung zur Fahrerunterstützung beim Fahrbetrieb eines Nutzfahrzeugs
DE102008023135A1 (de) * 2008-05-09 2009-11-12 Man Nutzfahrzeuge Ag Verfahren zum Betreiben eines Fahrzeuges, insbesondere eines Nutzfahrzeuges, Steuer- und/oder Auswerteeinrichtung, Fahrerassistenzsystem für ein Nutzfahrzeug sowie Nutzfahrzeug
DE102008029453A1 (de) 2008-06-21 2009-12-24 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Einstellen eines sog." Segelmodus" bei einem Kraftfahrzeug
DE102010005045A1 (de) 2010-01-20 2011-07-21 MAN Truck & Bus AG, 80995 Verfahren zur Auswahl eines geeigneten Fahrgangs

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Publication number Priority date Publication date Assignee Title
DE2416180A1 (de) * 1974-04-03 1975-10-16 Daimler Benz Ag Motorbremse fuer ventilgesteuerte mehrzylinderbrennkraftmaschinen
DE3610131A1 (de) * 1986-03-26 1987-09-17 Bayerische Motoren Werke Ag Brennkraftmaschine, insbesondere dieselmotor, als antriebseinrichtung fuer fahrzeuge
DE10329022A1 (de) * 2003-06-27 2005-01-27 Daimlerchrysler Ag Verfahren zur Vergrößerung des Schleppmoments einer Brennkraftmaschine
DE102006001818A1 (de) 2006-01-13 2007-07-19 Man Nutzfahrzeuge Ag Verfahren und Vorrichtung zur Fahrerunterstützung beim Fahrbetrieb eines Nutzfahrzeugs
DE102008023135A1 (de) * 2008-05-09 2009-11-12 Man Nutzfahrzeuge Ag Verfahren zum Betreiben eines Fahrzeuges, insbesondere eines Nutzfahrzeuges, Steuer- und/oder Auswerteeinrichtung, Fahrerassistenzsystem für ein Nutzfahrzeug sowie Nutzfahrzeug
DE102008029453A1 (de) 2008-06-21 2009-12-24 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Einstellen eines sog." Segelmodus" bei einem Kraftfahrzeug
DE102010005045A1 (de) 2010-01-20 2011-07-21 MAN Truck & Bus AG, 80995 Verfahren zur Auswahl eines geeigneten Fahrgangs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110121452A (zh) * 2017-01-19 2019-08-13 舍弗勒技术股份两合公司 用于控制具有自动化离合器的车辆的滑行运行的方法
EP3406886A1 (fr) * 2017-05-18 2018-11-28 MAN Truck & Bus AG Procédé de fonctionnement pour un système d'aide à la conduite et véhicule automobile
CN108952974A (zh) * 2017-05-18 2018-12-07 曼卡车和巴士股份公司 用于驾驶员辅助系统的运行方法和机动车
EP3693589A1 (fr) * 2017-05-18 2020-08-12 MAN Truck & Bus SE Procédé de fonctionnement pour un système d'aide à la conduite et véhicule automobile
US11280281B2 (en) 2017-05-18 2022-03-22 Man Truck & Bus Ag Operating method for a driver assistance system and motor vehicle

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