CN108556837A - Torque control method, the apparatus and system of light mixing system - Google Patents
Torque control method, the apparatus and system of light mixing system Download PDFInfo
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- CN108556837A CN108556837A CN201810274846.2A CN201810274846A CN108556837A CN 108556837 A CN108556837 A CN 108556837A CN 201810274846 A CN201810274846 A CN 201810274846A CN 108556837 A CN108556837 A CN 108556837A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- 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
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- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention provides a kind of torque control method, the apparatus and systems of light mixing system, are related to the mixed dynamic technical field of engine, and this method is applied to be equipped with the three-cylinder engine of BSG motors, including：When receiving increase torque request, the maximum available torque of BSG motors under torque torque and present case is calculated；Torque torque is the difference for increasing torque request corresponding target torque and current output torque；Judge whether maximum available torque is greater than or equal to torque torque；If so, control BSG motors are according to torque torque output torque；If not, controlling BSG motors according to maximum available torque output torque, and control difference output torque of the three-cylinder engine according to target torque and maximum available torque.The embodiment of the present invention preferentially selects to carry out torque using BSG motors, meets requested torque when BSG Motor torques cannot fully meet request, then by controlling engine, can promote fuel economy.
Description
Technical field
The present invention relates to the mixed dynamic technical fields of engine, more particularly, to a kind of torque control method of light mixing system, dress
It sets and system.
Background technology
With the rapid development of China's economic society, automobile is while bringing people's life convenient, also to the energy of country
Source safety and environmental protection propose new challenge, therefore country is to vehicle energy saving and emission reduction also pay attention to day by day, it is proposed that new
The regulation of oil consumption standard and discharge.
Therefore many automobile factory commercial cities are in the application for actively promoting three-cylinder engine, by increasing turbocharging technology and subtracting
Few engine displacement improves fuel economy and is subtracted while ensureing with traditional four cylinder naturally aspirated engine identical power
Few discharge, to meet increasingly strict laws and regulations requirement.Increase BSG (Belt Starter on the basis of three-cylinder engine
Generator, V belt translation start stop apparatus), BSG is a light hybrid technology, can be to traditional gasoline and diesel engine
Operating mode optimizes, and fuel efficiency is improved when idling, startup.
There is fuel economy difference in existing light mixing system, engine, at present when carrying out torque output control
Not yet propose effective solution scheme.
Invention content
In view of this, the purpose of the present invention is to provide a kind of torque control method, the apparatus and system of light mixing system, it is excellent
First BSG motors is used to carry out the control of torque, fuel economy can be improved.
In a first aspect, an embodiment of the present invention provides a kind of torque control method of light mixing system, applied to being equipped with BSG
The three-cylinder engine of motor, including：When receiving increase torque request, BSG electricity under torque torque and present case is calculated
The maximum available torque of machine；Torque torque is the difference for increasing torque request corresponding target torque and current output torque；Sentence
Whether disconnected maximum available torque is greater than or equal to torque torque；If so, control BSG motors are according to torque torque output torque；
If not, controlling BSG motors according to maximum available torque output torque, and three-cylinder engine is controlled according to target torque and maximum
The difference output torque of available torque.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein meter
The step of calculating the maximum available torque of BSG motors under torque torque and present case, including：It is corresponding torque request will to be increased
Target torque subtracts difference that current output torque obtains as torque torque；Target torque is in same with current output torque
Level；The theoretical maximum torque of BSG motors under present case is subtracted difference that the instant output torques of BSG motors obtains as
Maximum available torque.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, wherein control
The step of three-cylinder engine processed is according to the difference output torque of target torque and maximum available torque, including：Pass through control and regulation
The mode of air throttle and/or the angle of ignition, control three-cylinder engine are exported according to the difference of target torque and maximum available torque and are turned round
Square.
Second aspect, an embodiment of the present invention provides a kind of torque control method of light mixing system, applied to being equipped with BSG
The three-cylinder engine of motor, including：When receiving reduction torque request, calculates drop and turn round torque；It is to reduce torque that drop, which turns round torque,
Ask corresponding target torque and the difference of current output torque；Obtain the minimal torque of BSG motors；Judge BSG motors most
Whether small torque, which is less than or equal to drop, is turned round torque；If so, control BSG motors turn round torque output torque according to drop；If not, control
Three-cylinder engine processed according to target torque and minimal torque difference output torque.
In conjunction with second aspect, an embodiment of the present invention provides the first possible embodiments of second aspect, wherein meter
The step of drop turns round torque is calculated, including：The corresponding target torque of torque request will be reduced and subtract the difference that current output torque obtains
Torque is turned round as drop；Target torque is in same level with current output torque.
In conjunction with second aspect, an embodiment of the present invention provides second of possible embodiments of second aspect, wherein control
The step of three-cylinder engine processed is according to the difference output torque of target torque and minimal torque, including：By controlling to adjust solar term
The mode of door and/or the angle of ignition controls difference output torque of the three-cylinder engine according to target torque and minimal torque.
The third aspect, an embodiment of the present invention provides a kind of torque control device of light mixing system, applied to being equipped with BSG
The three-cylinder engine of motor, including：First computing module, for when receive increase torque request when, calculate torque torque with
And under present case BSG motors maximum available torque；Torque torque is for the corresponding target torque of increase torque request and currently
The difference of output torque；First judgment module, for judging whether maximum available torque is greater than or equal to torque torque；First is defeated
Go out module, is used for if so, control BSG motors are according to torque torque output torque；Second output module is used for if not, control
BSG motors processed control three-cylinder engine according to target torque and maximum available torque according to maximum available torque output torque
Difference output torque.
In conjunction with the third aspect, an embodiment of the present invention provides the first possible embodiments of the third aspect, wherein the
Two output modules are additionally operable to：By way of controlling to adjust air throttle and/or the angle of ignition, control three-cylinder engine is turned round according to target
The difference output torque of square and maximum available torque.
Fourth aspect, an embodiment of the present invention provides a kind of torque control device of light mixing system, applied to being equipped with BSG
The three-cylinder engine of motor, including：Second computing module, for when receiving reduction torque request, calculating drop and turning round torque；Drop
It is the difference for reducing torque request corresponding target torque and current output torque to turn round torque；Acquisition module, for obtaining BSG electricity
The minimal torque of machine；Second judgment module turns round torque for judging whether the minimal torque of BSG motors is less than or equal to drop；The
Three output modules are used for if so, control BSG motors turn round torque output torque according to drop；4th output module, if for
It is no, control difference output torque of the three-cylinder engine according to target torque and minimal torque.
5th aspect, an embodiment of the present invention provides a kind of torque control system of light mixing system, including processor, storages
Device, bus and communication interface, processor, communication interface and memory are connected by bus；Memory is for storing program；Processing
Device calls program stored in memory for passing through bus, executes above-mentioned first aspect or second aspect and its each possibility
The method that provides of one of embodiment.
The embodiment of the present invention brings following advantageous effect：
Torque control method, the apparatus and system of light mixing system provided in an embodiment of the present invention, it is electric applied to BSG is equipped with
The three-cylinder engine of machine can carry out torque dynamic allocation by engine and BSG motors, preferential to select when there is torque request
It selects and carries out torque using BSG motors, expire when BSG Motor torques cannot fully meet request, then by controlling engine
Sufficient requested torque so that engine is operated in economic zone as possible, can promote fuel economy.
Other feature and advantage of the disclosure will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or by implement the disclosure above-mentioned technology it can be learnt that.
To enable the above objects, features, and advantages of the disclosure to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structure diagram of light mixing system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the torque control method of light mixing system provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the torque control method of another light mixing system provided in an embodiment of the present invention；
Fig. 4 is the flow chart of the torque control method of another light mixing system provided in an embodiment of the present invention；
Fig. 5 is a kind of structure diagram of the torque control device of light mixing system provided in an embodiment of the present invention；
Fig. 6 is the structure diagram of the torque control device of another light mixing system provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
With the rapid development of China's economic society, automobile is while bringing people's life convenient, also to the energy of country
Source safety and environmental protection propose new challenge, therefore country is to vehicle energy saving and emission reduction also pay attention to day by day, and with 2014
December 22 has formally issued GB 19578-2014《Passenger Car Fuel Consumption Standard consumption limit value》With GB 27999-2014《Passenger car fires
Expect consumption evaluation method and index》, it is specified that from 1 day January in 2016, the oil consumption of new certification vehicle must satisfy new oil consumption
Standard, the average fuel consumption that standard looks forward to vehicle also proposed specific requirement.Meanwhile country is to the regulation of motor vehicle emission also day
Benefit is harsh, and formally six standard of Light-duty Vehicle state has been issued on December 23rd, 2016《Light-duty vehicle pollutant emission limit and measurement
Method (Chinese 6th stage)》, it is specified that from the year two thousand twenty July 1, the discharge of the light-duty vehicles of all sale and registration is dirty
Dye object should all meet limit value requirement.Country pushes the development of vehicle enterprise and application advanced by constantly stringent rule and standard
Energy-saving and emission-reduction technology of vehicles.
Vehicle is looked forward to when carrying out Car design, generally can be according to preset one fixed displacement of vehicles dynamic performance targets match
Four cylinder engine, without match same displacement three-cylinder engine.But three cylinder equipments are for the unrivaled advantage of four-cylinder,
Such as lacked one group of piston rod valve actuating mechanism make manufacturing cost significantly reduce, volume become smaller be more easy to arrangement, quality mitigation rub
It wipes and reduces so that fuel economy is more preferable etc., therefore all actively promotes the application of three-cylinder engine.
Such as by increasing turbocharging technology and reducing engine displacement, ensureing to start with traditional four cylinder natural aspirations
Fuel economy is improved while machine identical power and reduces discharge, to meet increasingly strict laws and regulations requirement, but this road
Line can not be applied to originally the just middle and high end car of four cylinder engines with supercharger of matching or the SUV (Sport of car weight bigger
Utility Vehicle) vehicle.In addition, the vehicle low-speed dynamic for being equipped with three cylinder machine of small displacement turbocharging is insufficient, because
Low engine speed section turbocharging does not completely intervene, and the peak torque of engine is mainly determined by the discharge capacity of engine at this time.
At present on the market there are no a dynamical system, the advantages of three-cylinder engine can be made full use of, while can effectively evade three again
The shortcomings that cylinder machine, moreover it is possible to meet the power performance requirement for just needing to be equipped with four cylinder engine with supercharger vehicles originally.
Based on this, a kind of torque control method, the apparatus and system of light mixing system provided in an embodiment of the present invention define
A kind of implementation method of flexible four-cylinder, using small displacement three-cylinder engine+BSG, (Belt Starter Generator, band pass
Dynamic start stop apparatus) motor combination, while the advantages of take into account three-cylinder engine and four cylinder engine, evading lacking for three-cylinder engine
Point.The economy that three cylinder machines can be made full use of, in start and stop or when having powerful power performance to require, BSG motors serve as hair
4th cylinder of motivation persistently carries out torque output.Above-mentioned three-cylinder engine can be supercharging three-cylinder engine or non pressurized three cylinder hair
Motivation.
Traditional engine can only pass through throttle adjustment, the angle of ignition when responding the increasing of other controllers, drop turning round request
It adjusts etc. and to realize, ignition effectiveness is low, fuel economy is poor.Since the torque responsive of BSG motors is more rapid, in the present invention
It is dynamically distributed by engine and BSG Motor torques, when other controllers have increasing, drop turns round request, preferential selection uses BSG electricity
Machine is turned round to carry out torque or drop, when only BSG Motor torques cannot fully meet request, then passes through traditional adjusting air throttle
Or the method for the angle of ignition meets the remainder of requested torque so that engine is operated in economic zone as possible, to be promoted
Fuel economy.
It describes in detail below by embodiment.
Embodiment 1
The structure diagram of light mixing system shown in Figure 1, the main part that the system is shown are sent out including three cylinders
Motivation ontology 10, accessory system and BSG systems 30.
Each attachment of accessory system by belt connect and can mutual passing power, these attachmentes include electrical machine belt pulley
22, the bent axle accessory side of engine belt wheel 25 and motor belt 24, engine belt wheel 25 and three cylinder machine ontologies 10 is rigidly connected.
BSG systems 30 include motor body and electric machine controller, and BSG systems can both be used as generator to charge for battery, and can also make
The operation of other attachmentes and engine is driven using the electric energy of battery for motor.
In embodiments of the present invention, it is illustrated by taking 48vBSG systems as an example, can also be the higher BSG systems of voltage.
48v BSG motors in the embodiment of the present invention need to match 48v batteries provides electric energy for it；It needs to be equipped with DC/DC simultaneously
Converter, to realize the conversion of 48v voltages and 12v voltages to charge to the 12v batteries of vehicle, in this case, vehicle tradition
Generator can cancel.
Embodiment 2
An embodiment of the present invention provides a kind of torque control method of light mixing system, applied to being equipped with the three of BSG motors
Cylinder engine.The flow chart of the torque control method of light mixing system shown in Figure 2, driver can choose whether to start and turn round
Square auxiliary mode, the method for executing the present embodiment on startup, this method comprises the following steps：
Step S202, when receive increase torque request when, calculate under torque torque and present case BSG motors most
Big available torque.
Wherein, torque torque is the difference for increasing torque request corresponding target torque and current output torque, this is current
Output torque be engine and BSG motors torque and.After the torque torque receives increase torque request, in the whole of system
The torque value being further added by is needed in body output.
Above-mentioned increase torque request can come from capable of influencing the various controllers of torque output on vehicle, for example, with throttle
Controller or ESP controller of pedal connection etc..Target torque can be carried in above-mentioned increase torque request, will be increased
The corresponding target torque of torque request subtracts difference that current output torque obtains as torque torque.It needs to illustrate herein
It is that target torque is in same level with current output torque, such as target torque is all made of wheel side with current output torque
Torque, gear-box side torque or engine side torque, the two are in the accuracy that same level just can guarantee calculating.
It is more to indicate that BSG motors can also export again under current working for the maximum available torque of BSG motors under present case
The ability of few torque, the instant output torque that the theoretical maximum torque of BSG motors under present case can be subtracted to BSG motors obtain
The difference arrived is as maximum available torque.The theoretical maximum torque needs power limit and BSG in conjunction with system whether to drop work(
Situations such as rate, considers.
Step S204, judges whether maximum available torque is greater than or equal to torque torque.If so, executing step S206；
If not, executing step S208.
When receiving torque request, preferential selection using BSG motors carries out torque or, only BSG Motor torques are not
When can fully meet request, then meet by conventional transmitters regulative mode the remainder of requested torque.Due to increasing, dropping torsion
Duration it is shorter, so need not meet torque request by sacrificing the method for ignition effectiveness, fuel economy is more preferable.
When maximum available torque is greater than or equal to torque torque, indicate that only BSG motors can meet torque request,
Therefore increase output torque using only BSG motors；Otherwise, while BSG motors export its maximum available torque, BSG at this time
It clicks and exports with all strength, then control engine and increase torque output.
Step S206, control BSG motors are according to torque torque output torque.
In the case, torque output is only increased by BSG motors.
Step S208, control BSG motors control three-cylinder engine according to target according to maximum available torque output torque
The difference output torque of torque and maximum available torque.
When BSG Motor torques cannot fully meet request, three-cylinder engine is needed also to increase torque output.Wherein, may be used
In a manner of by controlling to adjust air throttle and/or the angle of ignition, control three-cylinder engine can be used according to target torque and maximum and be turned round
The difference output torque of square.
The torque control method of light mixing system provided in an embodiment of the present invention is sent out applied to three cylinders for being equipped with BSG motors
Motivation can carry out torque dynamic allocation by engine and BSG motors, and when there is torque request, preferential selection uses BSG electricity
Machine carries out torque, meets requested torque when BSG Motor torques cannot fully meet request, then by controlling engine,
So that engine is operated in economic zone as possible, fuel economy can be promoted.
An embodiment of the present invention provides a kind of torque control method of light mixing system, applied to being equipped with the three of BSG motors
Cylinder engine.The flow chart of the torque control method of light mixing system shown in Figure 3, this method comprises the following steps：
Step S302 calculates drop and turns round torque when receiving reduction torque request.
Wherein, it is the difference for reducing torque request corresponding target torque and current output torque that drop, which turns round torque, this is current
Output torque is engine current output torque, and engine current output torque does not include the torque of BSG motors.The drop turns round torque
It receives after increasing torque request, reduced torque value is needed in the overall output of system.
Above-mentioned reduction torque request can come to influence the various controllers of torque output, such as gearbox on vehicle
Controller or ESP controller etc..Target torque can be carried in above-mentioned reduction torque request, torque request pair will be reduced
The target torque answered subtracts the difference that engine current output torque obtains and turns round torque as drop.
It should be noted that target torque and current output torque are in same level, for example, target torque with work as
Preceding output torque is all made of wheel side torque, gear-box side torque or engine side torque, and the two is in same level and could protect
Demonstrate,prove the physical significance calculated.
Step S304 obtains the minimal torque of BSG motors.The minimal torque is maximum negative sense torque.
BSG motors just output torque auxiliary vehicle operation when, could by reduce BSG motors output come respond drop
Low torque is asked.It needs first to obtain the output torque of BSG motors in the current situation herein, the drop for representing BSG motors turns round energy
Power.
Step S306, judges whether the minimal torque of BSG motors is less than or equal to drop and turns round torque.If so, executing step
S308；If not, executing step S310.
When receiving drop torsion request, preferential selection carries out drop torsion using BSG motors, and only BSG Motor torques cannot
When fully meeting request, then meet by conventional transmitters regulative mode the remainder of requested torque.Due to increasing, dropping torsion
Duration is shorter, so need not meet torque request by sacrificing the method for ignition effectiveness, fuel economy is more preferable.
When the minimal torque of BSG is less than or equal to drop and turns round torque, indicates that only BSG motors can meet drop torsion and ask
It asks, therefore output torque is reduced using only BSG motors；Otherwise, under the premise of BSG motors export minimal torque, then hair is controlled
Motivation reduces torque output.
Step S308, control BSG motors turn round torque output torque according to drop.
In the case, only realize that drop is turned round by BSG motors.
Step S310 controls difference output torque of the three-cylinder engine according to target torque and minimal torque.
When BSG Motor torques cannot fully meet request, three-cylinder engine is needed also to increase torque output.Wherein, may be used
In a manner of by controlling to adjust air throttle and/or the angle of ignition, control three-cylinder engine is according to target torque and minimal torque
Difference output torque.
The torque control method of light mixing system provided in an embodiment of the present invention is sent out applied to three cylinders for being equipped with BSG motors
Motivation can carry out torque dynamic allocation by engine and BSG motors, and when there is drop to turn round request, preferential selection uses BSG electricity
Machine carries out drop torsion, meets requested torque when BSG Motor torques cannot fully meet request, then by controlling engine,
So that engine is operated in economic zone as possible, fuel economy can be promoted.
Embodiment 3
An embodiment of the present invention provides a kind of torque control method of light mixing system, light mixing system shown in Figure 4
The flow chart of torque control method, this method comprises the following steps：
Step S402 judges the torque request whether vehicle has other controllers to send.If so, executing step S404；
If not, terminating.When obtaining torque request, BSG peak torques allowable are calculated；Otherwise continue to accidental conditions.
Step S404 calculates BSG peak torques allowable.The power limit and BSG of consideration system are needed when calculating
Situations such as whether dropping power.
Step S406 calculates the first torque relative value of demand.Torque value-engine the current torque asked.It needs
Illustrate, this embodiment assumes that the torque value of request is absolute torque, and starts in the torque and above-mentioned formula asked
Machine current torque is in same level, for example, request torque value be clutch end, then engine current torque also refer to from
Clutch end.
Step S408, judges whether BSG peak torques allowable are greater than or equal to the first torque relative value of demand.If
It is to execute step S410；If not, executing step S412.
If peak torque allowable BSG is more than or equal to the torque relative value of demand, it was demonstrated that use the ability foot of BSG motors
Enough meet torque request, control BSG motors execute the first torque relative value of demand；If not, control BSG motors execute maximum
Torque, and control engine and execute the peak torque that the torque torque-BSG of request is executed, it is final so that the torque that BSG is executed adds
The torque that upper engine executes is equal to torque requested torque.
Step S410, control BSG motors execute the first torque relative value.
Step S412, control BSG motors execute maximum allowable torque.
Step S414, control engine execute the peak torque that the torque torque-BSG of request is executed.
Step S416：Whether judgement vehicle, which has other controllers to send drop, is turned round request.If so, executing step S418；Such as
Fruit is no, terminates.
Step S418 calculates BSG minimal torques allowable.
Step S420, the first drop for calculating demand turn round relative value.The drop torsion value-engine current torque asked.
Step S422：Judge whether BSG minimal torques allowable are less than or equal to the first drop torsion relative value of demand.If
It is to execute step S424；If not, executing step S426.
If the first drop that minimal torque allowable BSG is less than or equal to demand turns round relative value, it was demonstrated that use the energy of BSG motors
Power meets drop and turns round request enough, and the first drop that control BSG motors execute demand turns round relative value；If not, control BSG motors execute
Minimal torque, and control engine and execute the minimal torque that the drop torsion torque-BSG of request is executed, it is final so that the torsion that BSG is executed
Square is equal to drop plus the torque that engine executes and turns round requested torque.
Step S424, control BSG motors execute the first drop and turn round relative value.The drop torsion value-engine current torque asked.
Step S426, control BSG motors execute minimum allowable torque.
Step S428, the drop that control engine executes request turn round the minimal torque that torque-BSG is executed.
The torque control method of light mixing system provided in an embodiment of the present invention is sent out applied to three cylinders for being equipped with BSG motors
Motivation can carry out torque dynamic allocation by engine and BSG motors, and when having torque or drop turns round request, preferential selection makes
With BSG motors come carry out torque or drop turn round, when BSG Motor torques cannot fully meet request, then by control engine come
Meet requested torque so that engine is operated in economic zone as possible, can promote fuel economy.
Embodiment 4
An embodiment of the present invention provides a kind of torque control device of light mixing system, applied to being equipped with the three of BSG motors
Cylinder engine, the structure diagram of the torque control device of light mixing system shown in Figure 5, including：
First computing module 51, for when receiving increase torque request, calculating under torque torque and present case
The maximum available torque of BSG motors；Torque torque is the difference for increasing torque request corresponding target torque and current output torque
Value；
First judgment module 52, for judging whether maximum available torque is greater than or equal to torque torque；
First output module 53 is used for if so, control BSG motors are according to torque torque output torque；
Second output module 54 is used for if not, control BSG motors are according to maximum available torque output torque, and control
Three-cylinder engine according to target torque and maximum available torque difference output torque.
Above-mentioned second output module 54 is additionally operable to：By way of controlling to adjust air throttle and/or the angle of ignition, three cylinders are controlled
Engine according to target torque and maximum available torque difference output torque.
The embodiment of the present invention additionally provides a kind of torque control device of light mixing system, light mixing system shown in Figure 6
Torque control device structure diagram, including：
Second computing module 61, for when receiving reduction torque request, calculating drop and turning round torque；It is to reduce that drop, which turns round torque,
The difference of torque request corresponding target torque and current output torque；
Acquisition module 62, the minimal torque for obtaining BSG motors；
Second judgment module 63 turns round torque for judging whether the minimal torque of BSG motors is less than or equal to drop；
Third output module 64 is used for if so, control BSG motors turn round torque output torque according to drop；
4th output module 65 is used for if not, the difference for controlling three-cylinder engine according to target torque and minimal torque
Output torque.
The embodiment of the present invention additionally provides a kind of torque control system of light mixing system, including processor, memory, bus
And communication interface, the processor, communication interface and memory are connected by bus；The memory is for storing program；The processing
Device is used to call program stored in memory by bus, executes the method that above-described embodiment provides.
The embodiment of the present invention additionally provides a kind of computer of non-volatile program code that can perform with processor can
Medium is read, program code makes the method that processor executes above-described embodiment offer.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight
Point explanation is all difference from other examples, and the same or similar parts between the embodiments can be referred to each other.
The technique effect of the torque control device and system for the light mixing system that the embodiment of the present invention is provided, realization principle and generation and
Preceding method embodiment is identical, and to briefly describe, device embodiment part does not refer to place, can refer in preceding method embodiment
Corresponding contents.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, the flow chart in attached drawing and block diagram
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part for the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that at some as in the realization method replaced, the function of being marked in box can also be to be different from
The sequence marked in attached drawing occurs.For example, two continuous boxes can essentially be basically executed in parallel, they are sometimes
It can execute in the opposite order, this is depended on the functions involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use function or the dedicated base of action as defined in executing
It realizes, or can be realized using a combination of dedicated hardware and computer instructions in the system of hardware.
It, can be with if above-mentioned function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention should be subject to above-mentioned scope of the claims.
Claims (10)
1. a kind of torque control method of light mixing system, which is characterized in that applied to the three-cylinder engine for being equipped with BSG motors,
Including：
When receiving increase torque request, torsion can be used by calculating the maximum of the BSG motors under torque torque and present case
Square；The torque torque is the difference of the increase torque request corresponding target torque and current output torque；
Judge whether the maximum available torque is greater than or equal to the torque torque；
If so, controlling the BSG motors according to the torque torque output torque；
If not, controlling the BSG motors according to the maximum available torque output torque, and controls the three-cylinder engine and press
According to the difference output torque of the target torque and the maximum available torque.
2. according to the method described in claim 1, it is characterized in that, described under the calculating torque torque and present case
The step of maximum available torque of BSG motors, including：
The corresponding target torque of the increase torque request is subtracted into difference that current output torque obtains as torque torque；Institute
It states target torque and is in same level with the current output torque；
The theoretical maximum torque of the BSG motors under present case is subtracted to what the instant output torques of the BSG motors obtained
Difference is as maximum available torque.
3. according to the method described in claim 1, it is characterized in that, the control three-cylinder engine is turned round according to the target
The step of square and the difference output torque of the maximum available torque, including：
By way of controlling to adjust air throttle and/or the angle of ignition, control the three-cylinder engine according to the target torque with
The difference output torque of the maximum available torque.
4. a kind of torque control method of light mixing system, which is characterized in that applied to the three-cylinder engine for being equipped with BSG motors,
Including：
When receiving reduction torque request, calculates drop and turn round torque；It is that the reduction torque request is corresponding that the drop, which turns round torque,
The difference of target torque and current output torque；
Obtain the minimal torque of the BSG motors；
Judge whether the minimal torque of the BSG motors is less than or equal to the drop and turns round torque；
If so, control the BSG motors turns round torque output torque according to the drop；
If not, controlling difference output torque of the three-cylinder engine according to the target torque and the minimal torque.
5. according to the method described in claim 4, it is characterized in that, the calculating drop turn round torque the step of, including：
The corresponding target torque of the reduction torque request is subtracted into the difference that current output torque obtains and turns round torque as drop；Institute
It states target torque and is in same level with the current output torque.
6. according to the method described in claim 4, it is characterized in that, the control three-cylinder engine is turned round according to the target
The step of square and the difference output torque of the minimal torque, including：
By way of controlling to adjust air throttle and/or the angle of ignition, control the three-cylinder engine according to the target torque with
The difference output torque of the minimal torque.
7. a kind of torque control device of light mixing system, which is characterized in that applied to the three-cylinder engine for being equipped with BSG motors,
Including：
First computing module, for when receiving increase torque request, calculating the BSG under torque torque and present case
The maximum available torque of motor；The torque torque is the corresponding target torque of the increase torque request and current output torque
Difference；
First judgment module, for judging whether the maximum available torque is greater than or equal to the torque torque；
First output module, for if so, controlling the BSG motors according to the torque torque output torque；
Second output module for if not, control the BSG motors according to the maximum available torque output torque, and is controlled
Make difference output torque of the three-cylinder engine according to the target torque and the maximum available torque.
8. device according to claim 7, which is characterized in that second output module is additionally operable to：
By way of controlling to adjust air throttle and/or the angle of ignition, control the three-cylinder engine according to the target torque with
The difference output torque of the maximum available torque.
9. a kind of torque control device of light mixing system, which is characterized in that applied to the three-cylinder engine for being equipped with BSG motors,
Including：
Second computing module, for when receiving reduction torque request, calculating drop and turning round torque；It is the drop that the drop, which turns round torque,
Low torque asks corresponding target torque and the difference of current output torque；
Acquisition module, the minimal torque for obtaining the BSG motors；
Second judgment module turns round torque for judging whether the minimal torque of the BSG motors is less than or equal to the drop；
Third output module, for if so, control the BSG motors turns round torque output torque according to the drop；
4th output module, for if not, controlling the three-cylinder engine according to the target torque and the minimal torque
Difference output torque.
10. a kind of torque control system of light mixing system, which is characterized in that connect including processor, memory, bus and communication
Mouthful, the processor, communication interface and memory are connected by the bus；
The memory is for storing program；
The processor, for calling the program being stored in the memory, perform claim that 1-6 is required to appoint by the bus
One the method.
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