CN107084065A - Method and apparatus for controlling internal combustion engine - Google Patents
Method and apparatus for controlling internal combustion engine Download PDFInfo
- Publication number
- CN107084065A CN107084065A CN201710084266.2A CN201710084266A CN107084065A CN 107084065 A CN107084065 A CN 107084065A CN 201710084266 A CN201710084266 A CN 201710084266A CN 107084065 A CN107084065 A CN 107084065A
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- CN
- China
- Prior art keywords
- combustion engine
- internal combustion
- rotating speed
- inertia motion
- bent axle
- Prior art date
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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
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
-
- 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
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
-
- 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
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/06—Reverse rotation of engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/005—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation
- F02N2019/008—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation the engine being stopped in a particular position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N99/00—Subject matter not provided for in other groups of this subclass
- F02N99/002—Starting combustion engines by ignition means
- F02N99/006—Providing a combustible mixture inside the cylinder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The present invention relates to the method and apparatus being controlled for the inertia motion characteristic to internal combustion engine, wherein in the internal combustion engine inertia motion, the temporal curve of the rotating speed of the internal combustion engine can so be affected, so that the internal combustion engine is stopped in the angular range that can be previously given of bent axle, and wherein especially provide, the rotating speed produced in the inertia motion of the internal combustion engine of the internal combustion engine（330）By means of for rotating speed of target（343）Track regulation（300）To determine.
Description
Technical field
The present invention relates to according to corresponding independent claim it is as described in the preamble, for especially motor vehicle
Internal combustion engine inertia motion characteristic（Auslaufverhalten）The method and apparatus being controlled.Computer program, it is used for
It is also subject of the present invention to preserve the machine readable data medium of the computer program and the controller of electronics, by means of
The controller of the computer program, the machine readable data medium and the electronics can be implemented described according to the present invention
Method.
Background technology
The side being controlled for the inertia motion characteristic to internal combustion engine is disclosed from the A1 of DE 10 2,014 204 086
Method and device, air metrological service, especially choke valve or variable valving mechanisms for methods described and device
Reduced first in inertia motion according to requirement is stopped（Auslauf）During be conveyed to the air capacity of internal combustion engine.Here, according to
The temporal curve of the rotating speed for stopping requiring so influenceing the internal combustion engine so that energy of the internal combustion engine in bent axle
Stopped in enough previously given angular ranges.It is possible thereby to be controlled to the inertia motion characteristic and in addition can be with
It is determined that, when the inertia motion terminates and the internal combustion engine is converted in halted state at which cylinder of the internal combustion engine
In compression stroke.Influence for speed curves is carried out by aiding in unit, and the auxiliary unit is directly or indirectly
Ground for example will make the rotary motion of the bent axle by the corresponding manipulation of the HP jetting pump to being coupled on the bent axle
The torque slowed down or accelerated is applied on the bent axle.It is possible thereby to by the rotating speed during the inertia motion of internal combustion engine
Gradient is set in rotating speed of target gradient that can be previously given.
The control to the inertia motion characteristic being previously mentioned particularly with hybrid drive for can be in head
In first pure electro-motor operation, for example with specific torque requirement, in the case where not providing the drag torque of outside, nothing rises
Start the internal combustion engine dynamic device.
In addition, a kind of method for starting internal combustion engine for starterless is learnt from the A1 of DE 10 2,011 006 288,
A part for the cylinder of internal combustion engine is configured to the cylinder that can be depressurized during compression stroke for this method.Institute
When stating internal combustion engine inertia motion, the final position of bent axle is set, the cylinder that can be compressed in the final position is in compression
In stroke.Requiring when following closely in the starting process after the inertia motion of the internal combustion engine, it is in point gas cylinder, in institute
The air/fuel mixture in combustion stroke is in during stating halted state, is used to make the internal combustion engine weight to produce
The torque newly started, wherein the cylinder in compression stroke is depressurized.
The internal combustion engine follows resetting or starting and carried out herein from a kind of angle position hereafter closely, at the angle
The bent axle is stopped after the inertia motion at degree position.Stop position, namely described bent axle are relative to next
Individual firing top centre（ZOT）Angle spacing and involved herein starting cylinder be based in the case where stopping requiring correspondingly
The motor rotary speed of presence and thus corresponding different kinetic energy and change.In addition, work of the stop position based on the internal combustion engine
The mechanical friction of dynamic mechanical part and change, and based on auxiliary unit, such as air compressor or dc generator
Influence and/or correspondingly used in inertia motion stopping strategy, for example to the choke valve being previously mentioned, the high-pressure pump being previously mentioned
And/or camshaft phase corresponding manipulation and change.
The content of the invention
For being especially considering that internal combustion engine, resetting of being carried out after the internal combustion engine is closed down or is stopped ---
The decompression across-the-line starting described in the A1 of DE 10 2,011 006 288 for example by being previously mentioned --- to the internal combustion engine
Inertia motion characteristic be controlled, according to methods and apparatus of the present invention herein based on following understanding：The bent axle
The improved motor inertia motion positions that obtain can be by the rollback point of the bent axle of prespecified internal combustion engine referred to herein
（Rückdrehpunkt）Adjusted to realize by means of the track for rotating speed of target.In the inertia motion of the internal combustion engine
This allow for knowing as accurately as possible or it is expected that it is preferred that with the top dead-centre with igniting（ZOT）Related rotating speed.
When adjusted according to track given to this invention, by the rotating speed predicted --- the rotating speed is in the internal combustion
In last ZOT before the halted state of machine it is no correction intervene in the case of produce --- with it is described last
Desired rotating speed, so-called " rotating speed of target " in ZOT are compared, and the difference produced herein carrys out shape as adjusting deviation
Into and the difference produced herein is fed to governor motion.This difference is preferably based on as described in greater detail below
The rotating speed square and be hereby based on energy.
In the stop position being previously mentioned of the bent axle --- bent axle is in the internal combustion engine described in the stop position
Stopped after inertia motion --- before, the rollback point of especially described bent axle is critically important, that is to say, that in motor inertia fortune
The direction of rotation of bent axle is zero by the rotating speed temporarily having to transformation backward, namely described bent axle forward described in dynamic
Moment is critically important.Because the region of the rollback point around the bent axle, be arranged in it is on the cylinder of the internal combustion engine, for discharge
Combustion product and the air bleeding valve that sets can be opened in short time, so as to after direction of rotation of turning round until the stop position is stood
Close the air bleeding valve again again, thus air undefined in terms of quality and composition is reached accordingly, in the expansion stage
In cylinder in.This air due to its quality and thus caused by " gas spring effect " not only make stopping for the bent axle
What stop bit was put be accurately positioned become difficult or even make it is this be accurately positioned as impossible, and additionally due to its is unknown
Concentration and may too high residual gas ratio and the feelings in starting hope again are injured in corresponding expansion cylinder
Igniting reliability required under condition.
For it is described according to the present invention method and described device for, especially advise, by the internal combustion engine extremely
The manipulation that is suitable, being preferably based on regulation of the regulated quantity of few influence inertia motion so changes or so influences institute
The inertia motion or motor inertia motion of internal combustion engine are stated, so as to set the bent axle before the halted state of the internal combustion engine
The rollback point of identical as far as possible.Then preferably so select or set the rollback point so that turn round rotation in the bent axle
The air bleeding valve will not be opened in short time when turning direction.Then thus also no longer there is following necessity：In the gas being previously mentioned
Variable camshaft adjuster is set on cylinder outlet, so as to then must be in institute in the range of the rollback point of the bent axle
The rotating speed being temporarily present mentioned is correspondingly to manipulate the bent axle in the case of zero.
The regulated quantity being previously mentioned can be by following adjusting means（Stellvorrichtungen）To provide, the regulation dress
Putting the inertia motion to the internal combustion engine or the corresponding rotary motion of the bent axle has the shadow being equally previously mentioned below
Ring：
- the choke valve being arranged in the air intake duct of the internal combustion engine or corresponding air inlet pipe, the choke valve can not only have
The effect of deceleration and the effect with acceleration；
- it is arranged in fuel reservoir（Such as " common rail "）In high-pressure pump, the high-pressure pump substantially only have slow down effect；
- by combined characteristic curve controlled or the oil pump of regulation, the oil pump is being conveyed when power is improved due on the bent axle
Thus caused power drop and the effect of deceleration is applied in the inertia motion of the bent axle；
- generator mode（generatorisch）Regulated quantity, for example by being preferably able to by motor control mechanism（Intelligence
Can）The regulated quantity for the generator mode that interface provides the alternating current generator that controls, the regulated quantity only has the work slowed down
With；
- electro-motor pattern（elektromotorisch）Regulated quantity, the PWTN for being for example arranged in the internal combustion engine
（“Powertrain（Dynamical system）”）In supercharging-and regeneration-machine（BRM）, the supercharging-and regeneration-machine are with motor side
Formula typically provides several kilowatts of energy and substantially only has the effect accelerated to the inertia motion.
In the regulation that the rollback point to the bent axle is previously mentioned, many reference amounts adjuster can be used, many reference amounts
Adjuster is made up of two nonlinear P- adjusters, and described two nonlinear P- adjusters are used for the regulation by being previously mentioned
It is that at least two adjusting meanss in device are provided, preferred opposite effect is applied to the regulated quantity in the inertia motion,
The regulated quantity " rail pressure " for example provided by high-pressure pump and the regulated quantity " suction press " provided by choke valve.The regulation machine
Structure is then implemented suitable correction and intervened, and institute is set up in last ZOT will pass through described two regulated quantitys being previously mentioned
Desired rotating speed of target and thus obtain identical rollback point in each inertia motion of the internal combustion engine.
By bent axle described in the inertia motion in the internal combustion engine, according to the present invention can realize be always consistent with
Rollback point, can be in the cylinder accordingly expanded in the decompression across-the-line starting being previously mentioned（" expansion cylinder "）Needed for middle guarantee
Igniting reliability because the air quality in the expansion cylinder no longer passes through the short time being previously mentioned of the air bleeding valve
Opening and it is adulterated and thus can not possibly even be lighted due to too high residual gas ratio.Can be extraly with being built
The method of view selects or manipulated such rollback point of the bent axle, and the rollback point is on shaking in inertia motion
It is dynamic, should namely be paid the utmost attention in terms of comfortableness, and thus shortly before the halted state of the internal combustion engine only
Cause less " motor vibrations ".
In addition, for the method and described device according to the present invention, it can be stated that in the ZOT finally operated
Middle kinetic energy and/or potential energy according to the internal combustion engine or bent axle determines the rollback point.Herein preferably by this point：It is right
In each（Personalized）Between potential energy for internal combustion engine in kinetic energy and the ZOT of the bent axle in last ZOT
There is the relation of uniqueness, the kinetic energy is determined basically by the rotating speed of the bent axle, the potential energy passes through corresponding effective
Pressure in the combustion chamber of cylinder and the rollback point that is set based on both energy parameters are determined.Closed by means of this
System, can implement or realize according to described in of the invention reach by reaching suitable rotating speed of target in last ZOT
The suitable rollback point of bent axle.
It is preferred that according to the arithmetical difference of the square value of the different rotating speeds appeared in the inertia motion of the internal combustion engine come really
The kinetic energy that fixed or prediction is previously mentioned.Because the difference of these square values represents a kind of inertia motion in the internal combustion engine
The reliable yardstick that energy in stage reduces.In addition, it is possible thereby to rule of thumb can be previously given crank position ---
For example 1440 before specific ZOT ..., 720,540,360 and 180 ° of KW --- place is according to determined by the preparatory stage
Typical inertia motion characteristic is produced to apply, adapt to handle and/or only predict in the internal combustion engine inertia motion
Raw rotating speed.For the known curve of the temporal inertia motion characteristic, surmount finally（ü
berschritten）ZOT at the last rotating speed that is anticipated that according to rotor speed forecast（Schlussdrehzahl）, such as 175U/
Rotating speed of target that is corresponding higher or moving forward in time is calculated on the basis of min (rpm) backward, the rotating speed of target passes through institute
The reduction being previously mentioned of kinetic energy is stated automatically to cause expectation rotating speed.
The curve being previously mentioned of the temporal inertia motion characteristic for example can be by the following fortune of the internal combustion engine
Row condition is provided：
a）There is constant suction press；
b）There is the manipulation time constant, for the intake valve of cylinder to be closed；
c）There is the manipulation time constant, for the air bleeding valve of cylinder to be opened；
d）High-pressure pump is not conveyed currently.
For carry out rotor speed forecast or it is expected that processing mode be particularly based on following technical effect：It is involved herein
The energy of kinetic energy and/or potential energy described in the inertia motion of internal combustion engine reduces substantially constant.Because the internal combustion engine
The moment of inertia is that the drag torque of constant and described internal combustion engine usually not changes during inertia motion, so described
The difference being previously mentioned of rotating speed square represents the reliable yardstick that a kind of energy being used in the inertia motion stage reduces.It is this
Energy reduces yardstick particularly with the different crank shaft angles being previously mentioned（°KW）For or for away from top dead-centre（ZOT）Igniting
It is constant for many times of spacing or the igniting spacing.
The method according to the present invention can be to the bent axle of the internal combustion engine（KW）, the internal combustion engine faced it is used
Property motion in the rotating speed that produces and thus also have last stop position reliably precalculated or it is expected that（Prediction）.
This stop position is especially equivalent to such KW positions or a kind of crank shaft angle, especially when without the intervention for carrying out influence rotating speed
Or do not form inertia motion（Auslaufformung）When occur the crank shaft angle in the inertia motion of the internal combustion engine.
For the adjusting deviation that the track is adjusted, it either can enter to exercise the intervention of rotating speed acceleration or can carry out
The intervention for making rotating speed slow down, wherein according between these interventions, not right appeared in next described embodiment
Title property preferably statistically implements intervention more than the intervention for making the rotating speed slow down, accelerating the rotating speed.
The present invention can be applied in all internal combustion engines（Such as gasoline motor and diesel motor）On, for the internal combustion engine
For, by the control being previously mentioned of the rollback point for the bent axle for purpose described in this respect, be especially
Constantly running can be realized and the stop position of the bent axle can be influenceed, that is to say, that the present invention can not only be applied
In the internal combustion engine of feasible program with the decompression across-the-line starting being previously mentioned.
The computer program according to the present invention is configured for：Especially when the computer program is in calculator or control
Implement each step of methods described when being run on device processed.The side according to the present invention can be implemented on the controller of electronics
Method, without carrying out the change in structure to it.For this there is provided machine readable data medium, in the machine readable data
The computer program according to the present invention is saved on carrier.By the way that the computer program according to the present invention is loaded into
Obtain the controller of the electronics according to the present invention on the controller of electronics, the controller of the electronics be configured for by
According to the present invention method, especially in constantly running or hybrid power operation in control internal combustion referred to herein
Machine.
Other advantages and design of the present invention are obtained from specification and drawings.
Self-evident, feature that is noted earlier and being explained further below can not only be used corresponding illustrated
In combination and it can use in others combination or be used alone, and without departing from the scope of the present invention.
Brief description of the drawings
Fig. 1 schematically shows the structure of internal combustion engine involved, known in the prior art herein；
Fig. 2 shows bent axle in the rollback point before ZOT and in last ZOT before the halted state of the internal combustion engine
The exemplary curve or indicatrix of relation between the rotating speed measured in the case of the crank shaft angle more than 360 °；
Fig. 3 shows a kind of embodiment of the track regulation according to the present invention by means of the block diagram/flow diagram of combination；
Fig. 4 shows two kinds of embodiments of the method for carrying out rotor speed forecast by means of flow chart；
Fig. 5 is by means of speed curves and within the time in terms of unit [ms], more specifically just in the reversion of the bent axle
The curve of other related operation parameters shows the first embodiment of the method according to the present invention shortly before point；And
Fig. 6 shows that second of the method according to the present invention is real by means of the response curve of the related operation parameters according to Fig. 5
Apply example.
Embodiment
Fig. 1 schematically shows the structure of illustrated internal combustion engine 10 in the A1 of DE 10 2,014 204 086, at this
Can be with the method according to the present invention in internal combustion engine.This internal combustion engine 10 has combustion chamber 20, the volume of the combustion chamber
Limited by piston 30, the piston is mutually coupled by joining beam 40 with bent axle 50, and when the bent axle rotates with uniqueness
Mode implement move up and down.Controller（Namely control and/or governor motion）The internal combustion engine is manipulated in known manner
10 different regulating elements（Stellglieder）, such as choke valve 100, injection valve 150, spark plug 120 and if necessary
Manipulation passes through the up and down motion for the intake valve 160 that the first cam 180 is connected with camshaft 190 and/or by the second cam 182
Come the up and down motion of air bleeding valve 170 being coupled on the camshaft 190., can be in known manner in the internal combustion engine
The different devices that the motion to intake valve 160 and/or air bleeding valve 170 is controlled are provided for method, such as it is variable
Cam adjustment device or complete variable, for example electro-hydraulic valve-regulated devices.
Air is sucked by air inlet pipe 80 in known manner and it is discharged by institute by blast pipe 90.In Fig. 1 institutes
In the embodiment shown, the injection valve 150 is in the air inlet pipe 80.But equally in known manner it is possible that
The injection valve 150 is directly towards injection in the combustion chamber 20.Especially when the injection valve 150 is directly towards in the combustion chamber 20
High-pressure pump can be set during injection, and the high-pressure pump for example distributes the fuel to the injection valve 150 by spraying rail.The height
Pressure jet pump is connected with the bent axle 50.
The bent axle 50 is connected by the male part 210 of machinery with motor 200.The motor 200 for example can be hair
Motor such as be starter-generator.Also it is possible that the motor 200 is conventional starter and the mechanical coupling
Component 210 includes ring gear and little gear in known manner, and the starter is engaged with the little gear.Bent axle can be set
Angular transducer 220, to detect the angle position of the bent axle 50 and the angle position to be for example transferred into the control
Device 70 processed.But for example also it is possible that for example being obtained in the case of no crankshaft angle sensor 220 by calculation
Take the angle position.The compressor of air conditioner can be equally set, and the compressor is coupled on the bent axle 50（Do not show
Go out）.Manipulation for the HP jetting pump and/or the compressor of the air conditioner for example can be by the controller 70 be real
Apply.It is also possible that oil pump and/or cooling water pump are coupled on the bent axle 50（It is not shown）.
Fig. 2 shows that in the case of the internal combustion engine of four cylinders measured, bent axle is before ZOT in hot running status
Rollback point（Y-axis）With the rotating speed in last ZOT before the halted state of the internal combustion engine（X-axis）Between relation
（Indicatrix）250.From figure 2 it can be seen that such as 260 U/ of the internal combustion engine can be reached in last ZOT
Min rotating speed 255, the rotating speed is acquired as the rotating speed of non-angular error in the case of the crank shaft angle more than 360 ° of KW,
Always to obtain the 45 ° of KW identical rollback point before the ZOT of the bent axle（“RDP”）260.Due to described interior
In the inertia motion of combustion engine between two ZOT, the constant energy of the kinetic energy being previously mentioned and/or the potential energy being previously mentioned subtracts
It is small, it can particularly precisely be expected under the service condition being previously mentioned below or predict in inertia motion corresponding following
ZOT in rotating speed, and be consequently formed accurate speed curves or the rotating speed track shown in figs. 5 and 6.It is previously mentioned
Service condition is preferably equivalent to mentioned below, the condition a present in the inertia motion of the internal combustion engine）—d）In one
Item or multinomial condition：
a）In the presence of through suction press overregulate, constant, such as 650mbar；
b）In the presence of through overregulating or locked, the constant manipulation time, for close cylinder intake valve, for example with
120 ° of KW close corresponding intake valve before ZOT；
c）In the presence of through overregulating or locked, the constant manipulation time, for open cylinder air bleeding valve, for example with
148 ° of KW open corresponding air bleeding valve after ZOT；
d）High-pressure pump is not conveyed currently.
The rotor speed forecast track being previously mentioned can include up to 15 ZOT, more specifically from such as 800 U/min sky
Turn level until the halted state of the internal combustion engine.Such, turning of being predicted in last ZOT described below
Speed --- rotating speed is produced in the case where no correction is intervened --- is with the desired rotating speed in last ZOT, institute
" rotating speed of target " of meaning is compared, and the difference produced herein is formed as adjusting deviation, and described is produced herein
Difference is fed to below by way of the governor motion described by Fig. 3.This difference is as described by equally next based on institute
State rotating speed square and be hereby based on energy.
Here, many reference amounts adjuster 300 is used as into so-called " track regulation machine in shown embodiment in figure 3
Structure ", many reference amounts adjuster includes in the ongoing illustrated embodiment：For the regulated quantity " rail pressure provided by high-pressure pump
（Raildruck）" nonlinear first P- adjusters 305；And regulated quantity " the air inlet pipe pressure for being provided by choke valve
The same nonlinear 2nd P- adjusters 310 of power ".The regulation is based on the principle being previously mentioned：Reach the phase of the bent axle
Prestige-rollback point, then require that the specific motor rotary speed in last ZOT is set or set up, and then implement
Suitable correction is intervened, and is set up using will pass through the two regulated quantitys for example in the case where rotating speed is 260U/min described interior
Desired rotating speed of target in last ZOT before the halted state of combustion engine, and thus in each of the internal combustion engine
Identical rollback point, such as 45 ° of KW before the ZOT that then can no longer reach are obtained in inertia motion.
The first P- adjusters 305 provide in such an embodiment for the rail pressure the first regulated quantity 315 and
The 2nd P- adjusters 310 provide the second regulated quantity 320 for the suction press.Now, in these regulated quantitys
315th, the motor inertia motion 325 schematically shown on the basis of 320, the motor inertia motion is only less than example
Just it is activated during such as 800 U/min idler revolutions.From rotating speed 330 currently produced by the motor inertia is moved in 325
In, the actual speed predicted in last ZOT is obtained by means of the rotating speed track 335 predicted of calculated in advance
Numerical value and it is combined with the rated speed 343 in last ZOT with subtraction（verknüpft）340, so as to
To corresponding adjusting deviation.The tachometer value produced from the combination 340 is conveyed to described two P- adjusters 305,310.
By means of RDP indicatrixes 350 shown in figure 2 in advance for given rated value or expectation-rollback point（RDP）
345 obtain the rated value being previously mentioned accordingly of the rotating speed 343.
Will be it is considered that two regulated quantitys being previously mentioned when adjusted by means of the rotating speed of target described by Fig. 3-track
The rotating speed of the internal combustion engine is had opposite impacts on.Therefore, the choke valve by it is well-known it is suitable regulation not only
The reduction of the suction press can be realized and thus, it is possible to realize the effect for making the rotating speed slow down, and can be real
Show the raising of the suction press and thus, it is possible to realize the effect for accelerating the rotating speed.In contrast, the high pressure
Pump（On one's own initiative）It is merely able to realize improving and being thus also merely able to realize the effect for making the rotating speed slow down for fuel pressure.
According to the adjusting deviation predicted for last ZOT, following two different intervention situations are thus produced：
1. make the rotating speed（Initially）The intervention of acceleration, the intervention is especially suitable in the following cases：Current kinetic energy is not enough
For reaching desired rotating speed of target, and
2. make the rotating speed（Initially）The intervention of deceleration, the intervention is especially suitable in the following cases：The kinetic energy is to institute's phase
It is too big for the rotating speed of target of prestige.
Due to described two regulated quantitys --- namely two deceleration regulated quantity but only one accelerate regulation
Amount --- " asymmetry " that is previously mentioned, and so divide it is described two intervention situations 1 and 2 utilizations so that the acceleration
Situation is statistically dominant relative to deceleration situation.Situation is accelerated to be divided in current reality relative to this of deceleration situation
It is, for example, 1/4 pair 3/4 to apply in example, so that fewer ground is initially accelerated, but is relatively often initially slowed down.Accordingly
Ground, according to it is this it is exemplary divide, the intervention of acceleration is in terms of energy to stored in the internal combustion engine or bent axle
The influence of kinetic energy is smaller than the intervention of deceleration.
Described rotating speed of target-track regulation is activated in the following cases in the described embodiment：The rotating speed
There is less than threshold value herein for 800 U/min and thus the inertia motion stage of the internal combustion engine.Then after the activation,
As it is following it is described in more detail as, the rotating speed in ensuing ZOT is predicted.
Two kinds to the internal combustion engine for four cylinders different running situation below（Hereinafter referred to as " situation 1 " and " situation 2 "）
It is being previously mentioned, prediction tachometer be described.As already mentioned, herein will be it is assumed that involved herein
The energy being previously mentioned of kinetic energy described in the inertia motion of internal combustion engine reduces substantially constant.Because the internal combustion engine is used
Property square is the drag torque of constant and described internal combustion engine（Schleppmoment）During the inertia motion generally
Do not change or only very fine change, so the difference being previously mentioned of the rotating speed square represents a kind of be used for described
The reliable yardstick that energy in the inertia motion stage reduces.This energy reduces yardstick particularly with the different bent axles being previously mentioned
Angle（°KW）For or for away from top dead-centre（ZOT）Igniting spacing or many times of the igniting spacing for be constant.
When predictably calculating the rotating speed, preferably by based on a kind of analytic angle of the error of non-angular as far as possible.
Non-angular error, namely without being represented below the angle of angular error with α.Non-angular is error can be by with lower section
Formula is realized：As always only considering as angle value, in the consistent tooth of KW sensing wheels --- such as ZOT- teeth 17
Relative to identical address（gleichlautend）ZOT- teeth 17 --- between angle value.To illustrate herein, the KW- is passed
The corresponding angle felt between the different teeth of wheel is carried due to the manufacturing tolerance in the manufacturing process of such sensing wheel
Error.Corresponding angular error may be up to 5%.Rotating speed is formed（Drehzahlbildung）Herein preferably in the phase of the bent axle
The top dead center answered, for example at upper igniting dead point（ZOT）Place is carried out.
In the inertia motion of the internal combustion engine, the energy reduces Δ E and the internal combustion engine drag torque MSWith it is used
Property square θ it is proportional, that is to say, that be applicable following relation：
Therefrom go out again：
Or be for unit by simply deforming, so-called inertia motion coefficient Ms/ θ draw：
In these equations, parameter MSThe drag torque in terms of unit [Nm] is represented,Represent in terms of unit [° KW]
Igniting spacing, the igniting spacing is, for example, already mentioned 180 ° of KW for the internal combustion engine of four cylinders, and parameter θ is represented in described
The moment of inertia of the quality of the participation inertia motion of combustion engine, and n represents the rotating speed in terms of unit [U/min] of internal combustion engine.
For the internal combustion engine of four cylinders, there are two kinds of feasible programs in principle in the estimated rotating speed, that is,
In the presence of 180 ° of KW's（It is ensuing）Moment（Situation 1）Or at the time of there is 720 ° of KW（Situation 2）Prediction is in the internal combustion
Rotating speed during machine inertia motion.Represented below corresponding pre- angle measurement with β, and equivalent to described in the situation 1 being previously mentioned
Spacing of lighting a fire in itself or in situation 2 equivalent to the igniting spacing between same cylinder, that is, to the internal combustion engine of four cylinders
For equivalent to 4*180 ° KW=720 ° KW.
In order to predict the rotating speed in situation 1, namely in the case of 180 ° of KW, it is necessary to from 540 ° of KW
The information of angular range in the past.This angular range is referred to below as result angle（Ergebniswinkel）γ and calculate
It is as follows：
In order to predict the rotating speed in situation 2, namely in the case of 720 ° of KW, it is necessary to from 1080 ° of KW with
The information of preceding angular range.This angular range for being otherwise known as result angle γ is calculated as follows：
Illustrate, if come from " not lighting a fire " inertia motion of the internal combustion engine in the presence of necessary for this
The information gone, that is to say, that in result angle γ=1080 ° during KW, it should come pair preferably by means of the prediction angle beta=720 ° KW
The rotating speed optionally predicted because then in the drag torque, difference specific to cylinder that may be present not
It can be reflected in predicting the outcome.
And if only existing the less past information that comes from " not lighting a fire " inertia motion of the internal combustion engine,
That is in result angle γ=540 ° KW, then the rotating speed should preferably be entered by means of the prediction angle beta=180 ° KW
The normal prediction of row itself.
Figure 4 illustrates, more precisely shown for two kinds of situations 1 and 2 mentioned above for institute
The flow chart that two kinds of embodiments of method are explained is stated, methods described is used for pre- to internal combustion engine referred to herein progress rotating speed
Survey.In these embodiments, parameter " n " represents the rotating speed in terms of unit [U/min] of the internal combustion engine, and parameter " i " table
Show the sum for the crank rotation more than the ZOT being previously mentioned accordingly（Zähler）.In both embodiments, it has been assumed that four
The internal combustion engine of cylinder, that is to say, that the angle between two ZOT is 180 ° of KW.
According to the first of Fig. 4 embodiment, first against ZOTiIn internal combustion engine current running status most
The described institute that internal combustion engine described in 400 is calculated on the basis of the rotating speed formation angle [alpha]=360 ° KW of latter non-angular error is pre-
The rotating speed n of surveyi, and middle preservation 402 is carried out to it.Sensing pin is to previous ZOT in step 405i-1, that is exist
In current example for the prediction angle beta=180 ° KW be computed 410 and it is same in the middle of preservation 415 predicted
Rotating speed ni-1。
At step 420, in described two tachometer value niAnd ni-1On the basis of, calculated in β=180 ° during KW from last
Secondary running status acts energy be previously mentioned, constant and reduces yardstick DNQ180°KW, that is to say, that according to relational expression DNQ180°KW=Δ
n2 180°KW=n2 i-1-n2 iTo calculate the difference of rotating speed square.Therefrom angle produces γ=alpha+beta=540 ° KW, the result angle as a result
Equivalent to it is past, be used as the basic angle predicted the outcome.On the basis of the energy so calculated reduces yardstick, under
One（Different）ZOTi+1, that is for β=180 ° KW according to n2 i+1=n2 i-DNQ180°KWTo predict 425 rotating speeds square
n2 i+1.By opening root, 430 are therefrom calculated for next（Different）ZOTi+1The rotating speed n predictedi+1。
As by a dotted line 435 sketch out come as, calculated in the corresponding way in future with optional step 440
Other rotating speeds n being predicted, for other ZOTi+j（Wherein j=2,3,4 ...）, more specifically calculated always, until
More specifically according to relational expression ni+j=(n2 i-j*DNQ180°KW)0.5Produced rotating speed ni+jIt is reaching, small with being no longer able to
In zero numerical value.
Equivalent to the one waiting circulation of last step 445（Warteschleife）, wherein waiting always, until reaching
It is next（Different）ZOT, that is to say, that there is renewal angle δ=180 ° KW, the renewal angle disappears（vergeht）, until
In the presence of a result updated.
In second of embodiment again according to Fig. 4, and first in current ZOTiIn in the last non-angular
Rotating speed n described in 400 is calculated on the basis of the rotating speed formation angle [alpha]=360 ° KW of erroriAnd middle preservation 402 is carried out to it.
Sensing pin is to previous consistent ZOT in step 405i-4, that is in the present example for it is described prediction angle beta=
720 ° of KW last non-angular error rotating speed formation angle [alpha]=360 ° KW on the basis of calculate 410 and it is same in the middle of protect
Deposit 415 the rotating speed n predictedi-4。
In described two tachometer value niAnd ni-4On the basis of, at step 420 again calculate the last prediction angle beta=
720 ° of KW constant energy reduces yardstick DNQ720°KW, that is to say, that according to relational expression DNQ720°KW=Δn2 720°KW=n2 i-4-n2 i
To calculate the difference of the rotating speed square.Therefrom angle produces γ=alpha+beta=1080 ° KW, the result as a result in such instances
Angle again equivalent to it is past, be used as the basic angle predicted the outcome.Reduce the base of yardstick in the energy so calculated
On plinth, for next identical or consistent ZOTi+4, namely for β=720 ° KW according to n2 i+4=n2 i-DNQ720°KW
To predict 425 rotating speed square n2 i+4.By opening root, therefrom calculate 430 ground and produce for next identical ZOTi+4Predicted
Rotating speed ni+4。
As also sketched out and here by dotted line 435, calculated in the corresponding way with optional step 440
In other rotating speeds n being predicted, for other ZOT in futurei+j（Wherein j=8,12,16 ...）, more specifically one is straight
Row is calculated, until more specifically according to relational expression ni+j=(n2 i-j*1/4*DNQ720°KW)0.5Produced rotating speed ni+jWith not
Numerical value can reach again, minus.
Last step 445 equivalent to one waiting circulation again, wherein waiting always, until reaching next（Different）
ZOT, that is to say, that there is renewal angle δ=180 ° KW, the renewal angle disappears, until in the presence of a result updated.
As can from according to the first embodiment, in Figure 5 exemplarily shown in speed curves 500 in find out that
Sample, on the basis of 791.1U/min current ZOT- rotating speeds 505, unaffected future the 14th ZOT rotating speed
510 prediction starts to produce numerical value 317.7U/min when 507, and produces numerical value in the 15th ZOT of prediction rotating speed 515
242.7U/min." unaffected future " refers to, the high-pressure pump is not adjusted device intervention and thus described
Suction press described in the inertia motion of internal combustion engine is unchangeably in the present example 650mbar, wherein the high-pressure pump
In addition the state not conveyed is kept.Described speed curves can cause the bent axle when rotating speed is 242.7U/min
, before ZOT 54.5 ° of KW rollback point, and rotating speed be 317.7U/min when cause the bent axle, before ZOT
13.0 ° of KW rollback point.
In described running situation, initially " acceleration " is judged, that is to say, that pass through the specified of the suction press
The raising 525 of value 520 and its actual value 522 are correspondingly improved to realize：15th ZOT would is that last ZOT simultaneously
And the actual speed in this last ZOT is no longer the 242.7U/min being previously mentioned, but it is 260U/ in the ideal case
Min, this rollback point equivalent to 45 ° of KW before ZOT again.For setting the adjusting deviation of suction press herein described
Energy on the basis of formed, that is to say, that using the difference of rotating speed square, more specifically this point is according to relational expression：
2602U2/min2-242.72U2/min2=+8697U2min2Come carry out.
Illustrate, in the setting being previously mentioned to the rotating speed of target value, shown choke valve-mesh in figure 3
The rated value of speed regulator 310 is marked at the beginning with 650mbar+80mbar=730mbar almost cmpletely using being defined
For reliable, the intervention scope from -160mbar to+80mbar, the choke valve-rotating speed of target adjuster is to reduce afterwards
Adjusting deviation also further reduces or ignored completely the intervention.But, the existing herein, situation that initially accelerates
In, equally figure 3 illustrates high-pressure pump-rotating speed of target adjuster 305 do not intervened so that the rail pressure is with about
50bar keeps constant and is not enhanced.
In addition to illustrate, the adjuster intervention must be terminated in moment t=- 400ms, because being now to institute in time
State suction press to be placed on a kind of stress level, numerical value of the stress level according to Fig. 2 equivalent to 650mbar, thus in institute
Actually also existed at the time of stating the penultimate closing process of intake valve according to the actual value 530 in the air inlet pipe
650mbar pressure.The intake valve this in t=- 260ms when the penultimate closing process that carries out after and
After correspondingly opening the air bleeding valve in the case of manipulated according to actual value 535, by for the last of the intake valve
The suction press of one closing process brings up to 970mbar stress level, and the stress level corresponds to shown in figure 2
Relation.
As especially can as seen from Figure 5 as, last ZOT rotating speed be 263.5U/min, this almost or foot
Enough rated values accurately equivalent to desired 260U/min.In addition, it means that 44 ° before there is ZOT in t=0ms
KW rollback point differs only by 1 ° of KW with desired, 45 ° of KW before ZOT rated values.
According to figure 6 illustrates second of embodiment, for shown speed curves 600, again be
On the basis of 791.7U/min current ZOT rotating speeds 605, in unaffected future in the rotating speed 610 to the 14th ZOT
Prediction starts to produce numerical value 314.4U/min when 607, and produces numerical value 237.9U/ in the 15th ZOT of prediction rotating speed 615
min.57.1 ° of KW rollback point or meeting before these rotating speeds 610,615 can cause ZOT in the case of 237.9U/min herein
14.8 ° of KW rollback point before causing ZOT in the case of the 314.4U/min.
In this case, initially judge " deceleration " and reduction by the suction press 622 and pass through institute
The opposite raising of rail pressure 625 is stated to realize：14th ZOT would is that last ZOT and in this last ZOT
Actual speed is not 314.4U/min, but is 260U/min, this reversion equivalent to 45 ° of KW before ZOT in the ideal case
Point.The adjusting deviation is formed on the basis of energy again, that is to say, that the difference of said rotating speed square is according to 2602U2/
min2-314.42U2/min2=-31247U2/min2To be formed.
When being set up to the rotating speed of target value, the rated value of the choke valve-rotating speed of target adjuster 310 is same
At the beginning herein with 650mbar-160mbar=490mbar almost cmpletely using it is reliable, from -160mbar to+
80mbar intervention scope.Further reduce with the adjusting deviation of reduction in two adjusters 305,310 or ignore it completely
Before respective intervention, the rail pressure brings up to about 130bar by the high-pressure pump-rotating speed of target adjuster 305 from 50bar
（The rail pressure of maximum positive is about 200bar herein）.
The adjuster intervention must be terminated again in moment t=- 400ms, because must be in time by the suction press
On the stress level for being placed in the 650mbar being previously mentioned, thus at the time of the penultimate closing process of the intake valve with
Rated value 620 and the actual value 630 that therefrom produces closed by means of the intake valve and the air inlet that there is the 650mbar being previously mentioned
Pipe pressure.The intake valve again again in t=- 260ms when the penultimate closing process that carries out after（And according to
Actual value 635 is correspondingly synchronously opened after the air bleeding valve）, by for last closing process of the intake valve
Suction press brings up to the stress level for the 970mbar being previously mentioned.
In addition as can be seen, last described ZOT rotating speed is 254.5U/min in such an embodiment, this
Be in close proximity to 260U/min rated value again, before thus there is ZOT in t=0ms 49 ° of KW rollback point with it is desired,
45 ° of KW rated value differs only by 4 ° of KW before ZOT.
It is noted that for the internal combustion engine for the high-pressure pump not being previously mentioned（So-called " PFI- motors "）For can also
Simply by means of choke valve-rotating speed of target adjuster the rotating speed of target is set up intervening in the case that scope accordingly expands.
In addition, for the internal combustion engine with shorter inertia motion --- wherein it is previously mentioned from dallying until halted state has to be less than
15 ZOT it is available --- the rotating speed of target also by accordingly it is bigger it is reliable, for the choke valve and/or use
Realized in the intervention scope of the high-pressure pump.
Described method can for the controller of electronics control program --- the controller of the electronics be used for pair
Internal combustion engine is controlled --- form or the control unit with one or more corresponding electronics（ECU）Form come real
It is existing.
Claims (15)
1. the method being controlled for the inertia motion characteristic to internal combustion engine, wherein described in the internal combustion engine inertia motion
The temporal curve of the rotating speed of internal combustion engine can so be affected so that the internal combustion engine can be previously given bent axle
Angular range in stop, it is characterised in that the rotating speed produced in the inertia motion of the internal combustion engine of the internal combustion engine
（330）Adjusted by means of track（300）To determine.
2. in accordance with the method for claim 1, it is characterised in that carrying out the track regulation（300）When, will be described interior
Last top dead-centre with igniting of the halted state foregoing description bent axle of combustion engine（ZOT）The rotating speed of middle generation（337）With
Desired rotating speed of target in last ZOT（343）It is compared, and by the produced difference when carrying out described compare
It is used as adjusting deviation（340）It is used as and is carrying out the track regulation（300）When basis.
3. in accordance with the method for claim 2, it is characterised in that the square value of the rotating speed in the internal combustion engine inertia motion
（420）On the basis of produce the adjusting deviation（340）.
4. according to the method any one of preceding claims, it is characterised in that in the energy with igniting of the bent axle
According to pre-determined inertia motion at the position that can be previously given of the bent axle before enough previously given top dead-centres
Characteristic determines the rotating speed produced in the internal combustion engine inertia motion（400、410）.
5. in accordance with the method for claim 4, it is characterised in that for the known curve of temporal inertia motion characteristic
For, calculate corresponding higher backward on the basis of the last rotating speed that the top dead center with igniting finally surmounted is anticipated that
Or the rotating speed of target that moves forward in time, the rotating speed of target automatically causes expectation rotating speed.
6. according to the method any one of preceding claims, it is characterised in that by means of for the first regulated quantity
One adjuster（305）And by means of the second adjuster at least one the second regulated quantity（310）To carry out the track
Regulation（300）.
7. in accordance with the method for claim 6, it is characterised in that by means of first regulated quantity and described at least second
Regulated quantity carries out the track regulation（300）When enter to exercise intervention that the rotating speed accelerates or enter to exercise the rotating speed to slow down
Intervention.
8. according to the method described in claim 6 or 7, it is characterised in that the regulated quantity being previously mentioned is by the tune that is next previously mentioned
One of regulating device is provided：
- the choke valve being arranged in the air intake duct of the internal combustion engine；
- the high-pressure pump being arranged in the fuel reservoir of the internal combustion engine；
- by combined characteristic curve controlled or the oil pump of regulation；
The regulated quantity of-generator mode；
The regulated quantity of-electro-motor pattern.
9. according to the method any one of preceding claims, it is characterised in that adjusted by means of the track（300）Energy
Rollback point enough setting the bent axle, being produced before the halted state of the internal combustion engine.
10. in accordance with the method for claim 9, it is characterised in that so set the rollback point so that fall in the bent axle
The air bleeding valve for turning to be arranged in during direction of rotation on the cylinder of the internal combustion engine is not turned on.
11. according to the method any one of preceding claims, it is characterised in that it is determined that during the rotating speed by one kind to the greatest extent
Based on the analytic angle of possible non-angular error.
12. according to the method any one of preceding claims, it is characterised in that by being carried below the internal combustion engine
To service condition in time that can previously given of at least one service condition to provide the inertia motion characteristic on
Curve：
A. there is constant suction press；
B. there is the constant manipulation time for being used to close the intake valve of cylinder；
C. there is the constant manipulation time for being used to open the air bleeding valve of cylinder；
D. high-pressure pump is not conveyed currently.
13. computer program, the computer program is configured for：Implement according to side any one of claim 1 to 12
Each step of method.
14. machine readable data medium, is saved according to described in claim 13 on the machine readable data medium
Computer program.
15. the controller of electronics, the controller of the electronics is configured for：By means of according to any one of claim 1 to 12
Described method controls internal combustion engine.
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| DE102016202343.8 | 2016-02-16 | ||
| DE102016202343.8A DE102016202343A1 (en) | 2016-02-16 | 2016-02-16 | Method and device for controlling an internal combustion engine |
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| CN107084065B CN107084065B (en) | 2021-07-06 |
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Cited By (4)
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| CN111608814A (en) * | 2019-02-22 | 2020-09-01 | 罗伯特·博世有限公司 | Method for controlling the coasting behavior of an internal combustion engine |
| CN111688666A (en) * | 2019-03-15 | 2020-09-22 | 罗伯特·博世有限公司 | Method for operating a device having an internal combustion engine and an electric machine |
| CN111828109A (en) * | 2020-08-30 | 2020-10-27 | 华能山东石岛湾核电有限公司 | Inertial positioning method for steam turbine turning gear |
| CN112539111A (en) * | 2019-09-20 | 2021-03-23 | 罗伯特·博世有限公司 | Method for operating an internal combustion engine |
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| DE102018212037A1 (en) * | 2018-07-19 | 2020-01-23 | Bayerische Motoren Werke Aktiengesellschaft | Method and control unit for operating an oil circuit of an internal combustion engine |
| DE102019214144A1 (en) * | 2019-09-17 | 2021-03-18 | Robert Bosch Gmbh | Method for controlling the coasting behavior of an internal combustion engine |
| DE102019215898A1 (en) * | 2019-10-16 | 2021-04-22 | Robert Bosch Gmbh | Method for switching off an internal combustion engine |
| DE102020003869B4 (en) | 2020-06-29 | 2022-09-29 | Mercedes-Benz Group AG | Method for operating an internal combustion engine when it is running down |
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| Publication number | Publication date |
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| CN107084065B (en) | 2021-07-06 |
| DE102016202343A1 (en) | 2017-08-31 |
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