CN106274884A - The power-control method of a kind of hybrid vehicle and system - Google Patents
The power-control method of a kind of hybrid vehicle and system Download PDFInfo
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- CN106274884A CN106274884A CN201610768364.3A CN201610768364A CN106274884A CN 106274884 A CN106274884 A CN 106274884A CN 201610768364 A CN201610768364 A CN 201610768364A CN 106274884 A CN106274884 A CN 106274884A
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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
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
-
- 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
-
- 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
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention discloses power-control method and the system of a kind of hybrid vehicle, be applied to include in the hybrid vehicle of electromotor and electronic/power generation all-in-one machine, when hybrid vehicle is in running status, obtain the duty parameter of electromotor；Judge that electromotor operates in low load condition or operates in higher load condition according to duty parameter；The engine load of higher load condition is higher than the engine load of low load condition；If electromotor operates in low load condition, then adjust the duty of electronic/power generation all-in-one machine, make electromotor operate in higher load condition or make engine stop work.The application can make electromotor operate in higher load condition or make engine stop work by the duty adjusting electronic/power generation all-in-one machine, avoid making electromotor be operated under low load condition, it is thus possible to raising delivery temperature, enable the nitrogen oxides in aerofluxus fully to be decomposed by exhaust after treatment system, reduce exhaust pollution.
Description
Technical field
The application relates to power technology field, relates more specifically to the power-control method of a kind of hybrid vehicle and is
System.
Background technology
Along with worsening shortages and people's pay attention to day by day to environmental protection of the non-renewable resources such as oil, more and more use
Hybrid vehicle is primarily selected by family as purchase car.
The dynamical system of hybrid vehicle generally includes electromotor and electronic/power generation all-in-one machine, electronic/power generation integrated
Machine is to have motor and the motor of two kinds of mode of operations of electromotor, and electromotor can be operated alone automobile, also can driving electric/
Power generation all-in-one machine is power battery charging, and electronic/power generation all-in-one machine can be operated alone automobile as motor, it is also possible to sending out
It is power battery charging as electromotor under the drive of motivation, so hybrid vehicle can take into account dynamic property and the warp of automobile
Ji property.
But, current hybrid vehicle, electromotor passively exports moment of torsion only in car load demand, it is impossible to according to vapour
The actual motion state of car adjusts output moment of torsion automatically, and therefore electromotor can often be operated under low load condition, and electromotor
Delivery temperature when being operated under low load condition is relatively low, and exhaust after treatment system can not fully decompose the nitrogen oxidation in aerofluxus
Thing, causes exhaust pollution relatively big, is unfavorable for environmental conservation.
Summary of the invention
In view of this, the invention provides power-control method and the system of a kind of hybrid vehicle, to reduce mixing
The exhaust pollution of power vehicle.
For achieving the above object, the present invention provides following technical scheme:
The power-control method of a kind of hybrid vehicle, is applied to include the mixed of electromotor and electronic/power generation all-in-one machine
Close in power vehicle, including:
When described hybrid vehicle is in running status, obtain the duty parameter of described electromotor；
Judge that described electromotor operates in low load condition or operates in higher load condition according to described duty parameter；
The engine load of described higher load condition is higher than the engine load of described low load condition；
If described electromotor operates in described low load condition, then adjust the work shape of described electronic/power generation all-in-one machine
State, makes described electromotor operate in described higher load condition or make described engine stop work.
Preferably, if described electromotor operates in described low load condition, then described electronic/power generation integrated is adjusted
The duty of machine, makes described electromotor operate in described higher load condition or make described engine stop work, including:
If described electromotor operates in described low load condition, it is judged that the energy of the electrokinetic cell of described hybrid vehicle
Amount is the most sufficient；
If the energy of described electrokinetic cell is inadequate, then the duty of described electronic/power generation all-in-one machine is adjusted to
Generator operation state, controlling described electromotor is providing while power for described hybrid vehicle, drive described electronic/
Power generation all-in-one machine is described power battery charging, to increase the load of described electromotor, makes described electromotor operate in described height
Load condition.
Preferably, also include:
If the energy of described electrokinetic cell is sufficient, then the duty of described electronic/power generation all-in-one machine is adjusted to electricity
Motivation duty, controlling described electronic/power generation all-in-one machine provides power for described hybrid vehicle, and starts described in control
Machine quits work.
Preferably, also include:
If described electromotor operates in described higher load condition, control described electromotor according to described hybrid vehicle
Demand power carry out power output.
Preferably, also include:
When starting at the beginning of described hybrid vehicle, first the duty of described electronic/power generation all-in-one machine is adjusted to
Electric motor operation state, controls described electronic/power generation all-in-one machine and drives described engine start, then by described electronic/generating
The duty of all-in-one is adjusted to generator operation state, and controlling described electromotor provides dynamic for described hybrid vehicle
Power, and to drive described electronic/power generation all-in-one machine be described power battery charging, so that described electromotor quickly enters described height and bears
Lotus state.
The power control system of a kind of hybrid vehicle, is applied to include the mixed of electromotor and electronic/power generation all-in-one machine
Close in power vehicle, including:
Acquisition module, for when described hybrid vehicle is in running status, obtains the operating mode ginseng of described electromotor
Number；
According to described duty parameter, judge module, for judging that described electromotor operates in low load condition or operation
At higher load condition；The engine load of described higher load condition is higher than the engine load of described low load condition；
Adjusting module, if operating in described low load condition for described electromotor, then adjusts described electronic/generating one
The duty of body machine, makes described electromotor operate in described higher load condition or make described engine stop work.
Preferably, described adjusting module, including:
Judging unit, if operating in described low load condition for described electromotor, it is judged that described hybrid vehicle
The energy of electrokinetic cell the most sufficient；
First adjustment unit, if the energy for described electrokinetic cell is inadequate, then by described electronic/power generation all-in-one machine
Duty be adjusted to generator operation state, control described electromotor for described hybrid vehicle provide power same
Time, driving described electronic/power generation all-in-one machine is described power battery charging, to increase the load of described electromotor, makes described sending out
Motivation operates in described higher load condition.
Preferably, described adjusting module, also include:
Second adjustment unit, if the energy for described electrokinetic cell is sufficient, then by described electronic/power generation all-in-one machine
Duty is adjusted to electric motor operation state, and controlling described electronic/power generation all-in-one machine provides dynamic for described hybrid vehicle
Power, and control the work of described engine stop.
Preferably, also include:
Control module, if operating in described higher load condition for described electromotor, controls described electromotor according to institute
The demand power stating hybrid vehicle carries out power output.
Preferably, also include:
Start module, for when starting at the beginning of described hybrid vehicle, first by the work of described electronic/power generation all-in-one machine
It is adjusted to electric motor operation state as state, controls described electronic/power generation all-in-one machine and drive described engine start, then by institute
The duty stating electronic/power generation all-in-one machine is adjusted to generator operation state, and controlling described electromotor is described hybrid power
Automobile provides power, and to drive described electronic/power generation all-in-one machine be described power battery charging, so that described electromotor enters rapidly
Enter described higher load condition.
Understand via above-mentioned technical scheme, compared with prior art, the invention discloses a kind of hybrid vehicle
Power-control method and system, be applied to include in the hybrid vehicle of electromotor and electronic/power generation all-in-one machine, described mixed
When conjunction power vehicle is in running status, obtain the duty parameter of described electromotor；Described sending out is judged according to described duty parameter
Motivation operates in low load condition or operates in higher load condition；The engine load of described higher load condition is higher than described
The engine load of low load condition；If described electromotor operates in described low load condition, then adjust described electronic/generating
The duty of all-in-one, makes described electromotor operate in described higher load condition or make described engine stop work.Can
See, the technical scheme that the application provides, when hybrid vehicle is in running status, can be by adjusting electronic/generating one
The duty of body machine makes electromotor operate in higher load condition or make engine stop work, it is to avoid make electromotor be operated in
Under low load condition such that it is able to improve delivery temperature, enable the nitrogen oxides in aerofluxus abundant by exhaust after treatment system
Decompose, reduce exhaust pollution, beneficially environmental conservation.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
The embodiment of application, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 shows that disclosed in one embodiment of the invention, the flow process of the power-control method of a kind of hybrid vehicle is shown
It is intended to；
Fig. 2 shows that disclosed in one embodiment of the invention, the structure of the power control system of a kind of hybrid vehicle is shown
It is intended to.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Describe, it is clear that described embodiment is only some embodiments of the present application rather than whole embodiments wholely.Based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of the application protection.
SCR SCR technology is to eliminate the technical way of nitrogen oxides in engine exhaust.Use SCR
The electromotor of technology, its main working process be urea liquid in urea nozzle sprays into exhaustor, occur at a certain temperature
Pyrolytic reaction produces ammonia (NH3), and ammonia reacts with the NOx in waste gas under catalyst action, reaches to reduce the mesh of NOx emission
's.
Urea liquid is in urea nozzle sprays into exhaustor, when temperature occurs pyrolytic reaction to produce ammonia more than 200 DEG C
(NH3)。
Urea pyrolysis reaction is:
(NH)2CO2→NH3+HNCO
HNCO+H2O→NH3+CO2
Ammonia under catalyst action with the NO in waste gasxReaction is:
NO+NO2+2NH3→2N2+3H2O
Such that it is able to reach to reduce NOxThe purpose of discharge.
Carbamide is after urea nozzle, and carbamide spraying environment temperature is the highest, and urea pyrolysis reaction is the fastest.Otherwise, temperature is more
Low, the pyrolytic reaction of carbamide is the slowest more insufficient.Once urea pyrolysis is insufficient will form crystallization, locates after affecting whole aerofluxus
The normal work of reason system.Therefore, SCR technology application must solve urea crystals problem.
When electromotor is operated in low load condition, engine exhaust temperature is relatively low, is easily caused carbamide and decomposes insufficient,
Urea crystals problem easily occurs.If by the burn incompletely means of fuel oil, it is possible to promote aerofluxus temperature to a certain extent
Degree, but overall gas exhaust piping is added heat waster fuel oil and promotes temperature relatively slowly, and easily make discharge deteriorate.
Therefore, the application provides the power-control method level system of a kind of hybrid vehicle, it is possible to reduce electromotor
Exhaust pollution.
See Fig. 1 and show the stream of the power-control method of a kind of hybrid vehicle disclosed in one embodiment of the invention
Journey schematic diagram.
The method is applied to include in the hybrid vehicle of electromotor and electronic/power generation all-in-one machine, as shown in Figure 1, and bag
Include:
S101: when described hybrid vehicle is in running status, obtain the duty parameter of described electromotor；
In the embodiment of the present application, described duty parameter can include the rotary speed data of electromotor, torque data, machine oil temperature
Degrees of data, engine oil pressure data, throttle size data, throttle opening data, vacuum data etc., these duty parameters are permissible
Read from ECU.
S102: judge that described electromotor operates in low load condition or operates in high load capacity according to described duty parameter
State；
The engine load of described higher load condition is higher than the engine load of described low load condition；
In the embodiment of the present application, after reading the duty parameter of electromotor, can be according to described duty parameter and institute
State the IGNITION CONTROL curve chart MAP of electromotor and engine operating condition and load characteristic curve figure, determine that electromotor is to operate in
Low load condition still operates in higher load condition.
It is understood that in the embodiment of the present application, electromotor is negative higher than low at the engine load of higher load condition
The engine load of lotus state.
S103: if described electromotor operates in described low load condition, then adjust the work of described electronic/power generation all-in-one machine
Make state, make described electromotor operate in described higher load condition or make described engine stop work.
In the embodiment of the present application, if described electromotor operates in described low load condition, then described electricity is adjusted
The duty of dynamic/power generation all-in-one machine, makes described electromotor operate in described higher load condition or make described engine stop
Work, including:
If described electromotor operates in described low load condition, it is judged that the energy of the electrokinetic cell of described hybrid vehicle
Amount is the most sufficient；
If the energy of described electrokinetic cell is inadequate, then the duty of described electronic/power generation all-in-one machine is adjusted to
Generator operation state, controlling described electromotor is providing while power for described hybrid vehicle, drive described electronic/
Power generation all-in-one machine is described power battery charging, to increase the load of described electromotor, makes described electromotor operate in described height
Load condition.
In car load running, power assembly drives car load to run, when electromotor operates in low load condition, and aerofluxus temperature
Degree usually less than 200 DEG C, if now the energy content of battery is not enough, then uses electromotor on the one hand to run for vehicle and provides power, and one
Aspect drives electromotor to be battery charging, makes electromotor operate in higher load condition always, and delivery temperature meets after-treatment system
Requirement, it is possible to reduce exhaust pollution, the now operation of power assembly be in electromotor drive car load add charge mode.
If the energy of described electrokinetic cell is sufficient, then the duty of described electronic/power generation all-in-one machine is adjusted to electricity
Motivation duty, controlling described electronic/power generation all-in-one machine provides power for described hybrid vehicle, and starts described in control
Machine quits work.
In car load running, power assembly drives car load to run, when electromotor operates in low load condition, and aerofluxus temperature
Degree usually less than 200 DEG C, if now using electromotor to drive car load, delivery temperature ratio is relatively low, and exhaust pollution meeting ratio is more serious,
And if the energy content of battery is sufficient, then motor can be used to replace motor-powered vehicle to travel, zero-emission runs, now power
The operation of assembly is in motor and pattern is operated alone.
It is understood that when described hybrid vehicle is in running status, if described electromotor operates in institute
Stating higher load condition, delivery temperature is usually above 200 DEG C, and the moment of torsion of electromotor is higher, and delivery temperature is in exhaust aftertreatment system
The SCR efficient district of system, can control described electromotor and carry out power output according to the demand power of described hybrid vehicle, row
Gas after-treatment system normally works, and now car load operation is operated alone by electromotor and can also realize ultra-low contamination thing discharge fortune
OK, the operation of power assembly is in electromotor and pattern is operated alone.
So, it is possible not only to the discharge deterioration region avoiding electromotor under low load condition, promotes under low load condition
Economy, dynamic property and the exhaust after treatment system high temperature that can give full play to again electromotor when higher load condition high simultaneously
The advantage of efficiency, it is achieved reduce the purpose of exhaust pollution.
Further, owing to electromotor is operated in low load condition when just starting, in order to avoid when just starting
The low load condition of electromotor, can be when starting at the beginning of described hybrid vehicle, first by described electronic/power generation all-in-one machine
Duty is adjusted to electric motor operation state, controls described electronic/power generation all-in-one machine and drives described engine start, then will
The duty of described electronic/power generation all-in-one machine is adjusted to generator operation state, and controlling described electromotor is that described mixing is moved
Power automobile provides power, and to drive described electronic/power generation all-in-one machine be described power battery charging, so that described electromotor is rapid
Enter described higher load condition.
Motor drives electromotor to start, and engine direct can be made to tap into into higher load condition, and then one side is transported for vehicle
Row provides power, one side to drive electromotor to be battery charging, and accumulator can be that electric heater is powered simultaneously, drives electric heater
For heating exhaust gas, and the heavy-duty service of electromotor can accelerate the intensification of exhaust after treatment system so that exhaust aftertreatment
System quickly enters normal operating conditions, thus hybrid vehicle can also run in cold-start phase in minimum discharge.
The embodiment of the invention discloses the power-control method of a kind of hybrid vehicle, be applied to include electromotor and electricity
In the hybrid vehicle of dynamic/power generation all-in-one machine, when described hybrid vehicle is in running status, obtain described electromotor
Duty parameter；Judge that described electromotor operates in low load condition or operates in high load capacity shape according to described duty parameter
State；The engine load of described higher load condition is higher than the engine load of described low load condition；If described electromotor is transported
Row in described low load condition, then adjusts the duty of described electronic/power generation all-in-one machine, makes described electromotor operate in described
Higher load condition or make described engine stop work.Visible, that the application provides technical scheme, at hybrid vehicle
When running status, can by adjust electronic/power generation all-in-one machine duty make electromotor operate in higher load condition or
Person makes engine stop work, it is to avoid make electromotor be operated under low load condition such that it is able to improves delivery temperature, makes aerofluxus
In nitrogen oxides fully can be decomposed by exhaust after treatment system, reduce exhaust pollution, beneficially environmental conservation.
See Fig. 2 and show the knot of the power control system of a kind of hybrid vehicle disclosed in one embodiment of the invention
Structure schematic diagram.
This system is applied to include in the hybrid vehicle of electromotor and electronic/power generation all-in-one machine, as shown in Figure 2, and bag
Include:
Acquisition module 1, for when described hybrid vehicle is in running status, obtains the operating mode ginseng of described electromotor
Number；
In the embodiment of the present application, described duty parameter can include the rotary speed data of electromotor, torque data, machine oil temperature
Degrees of data, engine oil pressure data, throttle size data, throttle opening data, vacuum data etc., these duty parameters are permissible
Read from ECU.
According to described duty parameter, judge module 2, for judging that described electromotor operates in low load condition or fortune
Row is at higher load condition；The engine load of described higher load condition is higher than the engine load of described low load condition；
In the embodiment of the present application, after reading the duty parameter of electromotor, can be according to described duty parameter and institute
State the IGNITION CONTROL curve chart MAP of electromotor and engine operating condition and load characteristic curve figure, determine that electromotor is to operate in
Low load condition still operates in higher load condition.
It is understood that in the embodiment of the present application, electromotor is negative higher than low at the engine load of higher load condition
The engine load of lotus state.
Adjusting module 3, if operating in described low load condition for described electromotor, then adjusts described electronic/generating
The duty of all-in-one, makes described electromotor operate in described higher load condition or make described engine stop work.
Preferably, described adjusting module 3, may include that
Judging unit, if operating in described low load condition for described electromotor, it is judged that described hybrid vehicle
The energy of electrokinetic cell the most sufficient；
First adjustment unit, if the energy for described electrokinetic cell is inadequate, then by described electronic/power generation all-in-one machine
Duty be adjusted to generator operation state, control described electromotor for described hybrid vehicle provide power same
Time, driving described electronic/power generation all-in-one machine is described power battery charging, to increase the load of described electromotor, makes described sending out
Motivation operates in described higher load condition.
Preferably, described adjusting module 3, it is also possible to including:
Second adjustment unit, if the energy for described electrokinetic cell is sufficient, then by described electronic/power generation all-in-one machine
Duty is adjusted to electric motor operation state, and controlling described electronic/power generation all-in-one machine provides dynamic for described hybrid vehicle
Power, and control the work of described engine stop.
In the embodiment of the present application, in car load running, power assembly drives car load to run, when electromotor operates in low
During load condition, delivery temperature is usually less than 200 DEG C, if now the energy content of battery is not enough, then on the one hand use electromotor is car
On the one hand running provides power, and driving electromotor is battery charging, makes electromotor operate in higher load condition, aerofluxus temperature always
Degree meets the requirement of after-treatment system, it is possible to reduce exhaust pollution, and the now operation of power assembly is in electromotor and drives car load
Add charge mode.
In car load running, power assembly drives car load to run, when electromotor operates in low load condition, and aerofluxus temperature
Degree usually less than 200 DEG C, if now using electromotor to drive car load, delivery temperature ratio is relatively low, and exhaust pollution meeting ratio is more serious,
And if the energy content of battery is sufficient, then motor can be used to replace motor-powered vehicle to travel, zero-emission runs, now power
The operation of assembly is in motor and pattern is operated alone.
Preferably, described power control system can also include:
Control module, if operating in described higher load condition for described electromotor, controls described electromotor according to institute
The demand power stating hybrid vehicle carries out power output.
It is understood that when described hybrid vehicle is in running status, if described electromotor operates in institute
Stating higher load condition, delivery temperature is usually above 200 DEG C, and the moment of torsion of electromotor is higher, and delivery temperature is in exhaust aftertreatment system
The SCR efficient district of system, can control described electromotor and carry out power output according to the demand power of described hybrid vehicle, row
Gas after-treatment system normally works, and now car load operation is operated alone by electromotor and can also realize ultra-low contamination thing discharge fortune
OK, the operation of power assembly is in electromotor and pattern is operated alone.
So, it is possible not only to the discharge deterioration region avoiding electromotor under low load condition, promotes under low load condition
Economy, dynamic property and the exhaust after treatment system high temperature that can give full play to again electromotor when higher load condition high simultaneously
The advantage of efficiency, it is achieved reduce the purpose of exhaust pollution.
Preferably, described power control system can also include:
Start module, for when starting at the beginning of described hybrid vehicle, first by the work of described electronic/power generation all-in-one machine
It is adjusted to electric motor operation state as state, controls described electronic/power generation all-in-one machine and drive described engine start, then by institute
The duty stating electronic/power generation all-in-one machine is adjusted to generator operation state, and controlling described electromotor is described hybrid power
Automobile provides power, and to drive described electronic/power generation all-in-one machine be described power battery charging, so that described electromotor enters rapidly
Enter described higher load condition.
Further, owing to electromotor is operated in low load condition when just starting, in order to avoid when just starting
The low load condition of electromotor, can be driven electromotor to start when starting at the beginning of described hybrid vehicle by motor, make to send out
Motivation is directly entered higher load condition, and then one side is run for vehicle and provided power, and on the one hand driving electromotor is battery charging,
And can to drive electric heater be heating exhaust gas, and the heavy-duty service of electromotor can accelerate the liter of exhaust after treatment system
Temperature so that exhaust after treatment system quickly enters normal operating conditions, thus hybrid vehicle can also in cold-start phase
Minimum discharge runs.
It should be noted that the power control system of hybrid vehicle that system embodiment in the application provides is permissible
The power-control method of the hybrid vehicle in employing said method embodiment, may be used for realizing in said method embodiment
Whole technical schemes, the function of its each functional module can implement according to the method in said method embodiment, its
The process of implementing can refer to the associated description in above-described embodiment, and here is omitted.
The embodiment of the present application discloses the power control system of a kind of hybrid vehicle, is applied to include electromotor and electricity
In the hybrid vehicle of dynamic/power generation all-in-one machine, when described hybrid vehicle is in running status, obtain described electromotor
Duty parameter；Judge that described electromotor operates in low load condition or operates in high load capacity shape according to described duty parameter
State；The engine load of described higher load condition is higher than the engine load of described low load condition；If described electromotor is transported
Row in described low load condition, then adjusts the duty of described electronic/power generation all-in-one machine, makes described electromotor operate in described
Higher load condition or make described engine stop work.Visible, that the application provides technical scheme, at hybrid vehicle
When running status, can by adjust electronic/power generation all-in-one machine duty make electromotor operate in higher load condition or
Person makes engine stop work, it is to avoid make electromotor be operated under low load condition such that it is able to improves delivery temperature, makes aerofluxus
In nitrogen oxides fully can be decomposed by exhaust after treatment system, reduce exhaust pollution, beneficially environmental conservation.
In sum, the power-control method of a kind of hybrid vehicle disclosed in the present application and system, by electromotor with
Generating/electric integral machine parallel drive, vehicle operates in engine low load state, and during energy content of battery abundance, vehicle is by electricity
Motivation drives, and zero-emission runs；Vehicle operates in engine low load state, but during energy content of battery deficiency, vehicle enters and starts
Machine drives and adds charge mode, it is possible to increase engine load and row's temperature, exhaust after treatment system normally works, and minimum discharge is transported
OK；When vehicle operates in engine high load state, vehicle is driven by electromotor.Exhaust after treatment system normally works, ultralow
Discharge runs；By motor-driven during vehicle cold start, electromotor is brought directly to electromotor driving and adds charge mode by motor,
And by electric heater to heating exhaust gas, make exhaust after treatment system quickly enter normal operating conditions, reduce cold start emission.
Thus avoid electromotor to be operated in low load condition, it is possible to solve under engine low load state and cold start time discharge
Problem, and little energy needed for heat management, make discharge be easily controlled.
Have the advantages that
One, electromotor work operation is maintained at higher load condition, and fuel economy is good.The heat management of electromotor controls letter
Single, little energy needed for heat management, promote economy.
Two, engine exhaust temperature maintains more than 200 DEG C, and SCR conversion efficiency is high, discharges low.The highest row's temperature
Urea crystals can be reduced.
Three, cold start and low load condition are by motor-driven, and dynamic response is good.And under low load condition, electromotor
Quit work, avoid engine emission deterioration region, zero-emission.
For convenience of description, it is divided into various module to be respectively described with function when describing system above.Certainly, this is being implemented
The function of each module can be realized in same or multiple softwares and/or hardware during application.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical similar portion between each embodiment
Dividing and see mutually, what each embodiment stressed is the difference with other embodiments.Especially for system or
For system embodiment, owing to it is substantially similar to embodiment of the method, so describing fairly simple, relevant part sees method
The part of embodiment illustrates.System described above and system embodiment are only schematically, wherein said conduct
The unit of separating component explanation can be or may not be physically separate, the parts shown as unit can be or
Person may not be physical location, i.e. may be located at a place, or can also be distributed on multiple NE.Can root
Factually border need select some or all of module therein to realize the purpose of the present embodiment scheme.Ordinary skill
Personnel, in the case of not paying creative work, are i.e. appreciated that and implement.
Professional further appreciates that, in conjunction with the unit of each example that the embodiments described herein describes
And algorithm steps, it is possible to electronic hardware, computer software or the two be implemented in combination in, in order to clearly demonstrate hardware and
The interchangeability of software, the most generally describes composition and the step of each example according to function.These
Function performs with hardware or software mode actually, depends on application-specific and the design constraint of technical scheme.Specialty
Technical staff specifically should can be used for using different methods to realize described function to each, but this realization should not
Think beyond the scope of this invention.
The method described in conjunction with the embodiments described herein or the step of algorithm can direct hardware, processor be held
The software module of row, or the combination of the two implements.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, depositor, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Also, it should be noted in this article, the relational terms of such as first and second or the like is used merely to one
Entity or operation separate with another entity or operating space, and not necessarily require or imply between these entities or operation
There is relation or the order of any this reality.And, term " includes ", " comprising " or its any other variant are intended to contain
Comprising of lid nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. a power-control method for hybrid vehicle, is applied to include electromotor and the mixing of electronic/power generation all-in-one machine
In power vehicle, it is characterised in that including:
When described hybrid vehicle is in running status, obtain the duty parameter of described electromotor；
Judge that described electromotor operates in low load condition or operates in higher load condition according to described duty parameter；Described
The engine load of higher load condition is higher than the engine load of described low load condition；
If described electromotor operates in described low load condition, then adjust the duty of described electronic/power generation all-in-one machine, make
Described electromotor operates in described higher load condition or makes described engine stop work.
Power-control method the most according to claim 1, it is characterised in that if described electromotor operates in described
Low load condition, then adjust the duty of described electronic/power generation all-in-one machine, makes described electromotor operate in described high load capacity shape
State or make described engine stop work, including:
If described electromotor operates in described low load condition, it is judged that the energy of the electrokinetic cell of described hybrid vehicle is
No abundance；
If the energy of described electrokinetic cell is inadequate, then the duty of described electronic/power generation all-in-one machine is adjusted to generating
Machine duty, controlling described electromotor is providing while power for described hybrid vehicle, drives described electronic/generating
All-in-one is described power battery charging, to increase the load of described electromotor, makes described electromotor operate in described high load capacity
State.
Power-control method the most according to claim 2, it is characterised in that also include:
If the energy of described electrokinetic cell is sufficient, then the duty of described electronic/power generation all-in-one machine is adjusted to motor
Duty, controlling described electronic/power generation all-in-one machine provides power for described hybrid vehicle, and controls described electromotor and stop
Only work.
Power-control method the most according to claim 1, it is characterised in that also include:
If described electromotor operates in described higher load condition, control the described electromotor need according to described hybrid vehicle
Power is asked to carry out power output.
Power-control method the most according to claim 1, it is characterised in that also include:
When starting at the beginning of described hybrid vehicle, first the duty of described electronic/power generation all-in-one machine is adjusted to electronic
Machine duty, controls described electronic/power generation all-in-one machine and drives described engine start, then by described electronic/power generation integrated
The duty of machine is adjusted to generator operation state, and controlling described electromotor provides power for described hybrid vehicle, and
Driving described electronic/power generation all-in-one machine is described power battery charging, so that described electromotor quickly enters described high load capacity shape
State.
6. a power control system for hybrid vehicle, is applied to include electromotor and the mixing of electronic/power generation all-in-one machine
In power vehicle, it is characterised in that including:
Acquisition module, for when described hybrid vehicle is in running status, obtains the duty parameter of described electromotor；
According to described duty parameter, judge module, for judging that described electromotor operates in low load condition or operates in height
Load condition；The engine load of described higher load condition is higher than the engine load of described low load condition；
Adjusting module, if operating in described low load condition for described electromotor, then adjusts described electronic/power generation all-in-one machine
Duty, make described electromotor operate in described higher load condition or make described engine stop work.
Power control system the most according to claim 6, it is characterised in that described adjusting module, including:
Judging unit, if operating in described low load condition for described electromotor, it is judged that moving of described hybrid vehicle
The energy of power battery is the most sufficient；
First adjustment unit, if the energy for described electrokinetic cell is inadequate, then by the work of described electronic/power generation all-in-one machine
Being adjusted to generator operation state as state, controlling described electromotor is providing while power for described hybrid vehicle,
Driving described electronic/power generation all-in-one machine is described power battery charging, to increase the load of described electromotor, makes described electromotor
Operate in described higher load condition.
Power control system the most according to claim 7, it is characterised in that described adjusting module, also includes:
Second adjustment unit, if the energy for described electrokinetic cell is sufficient, then by the work of described electronic/power generation all-in-one machine
State is adjusted to electric motor operation state, and controlling described electronic/power generation all-in-one machine provides power for described hybrid vehicle, and
Control the work of described engine stop.
Power control system the most according to claim 6, it is characterised in that also include:
Control module, if operating in described higher load condition for described electromotor, controls described electromotor according to described mixed
The demand power closing power vehicle carries out power output.
Power control system the most according to claim 6, it is characterised in that also include:
Start module, for when starting at the beginning of described hybrid vehicle, first by the work shape of described electronic/power generation all-in-one machine
State is adjusted to electric motor operation state, controls described electronic/power generation all-in-one machine and drives described engine start, then by described electricity
The duty of dynamic/power generation all-in-one machine is adjusted to generator operation state, and controlling described electromotor is described hybrid vehicle
Power is provided, and to drive described electronic/power generation all-in-one machine be described power battery charging, so that described electromotor quickly enters institute
State higher load condition.
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| CN108357489A (en) * | 2018-03-21 | 2018-08-03 | 潍柴动力股份有限公司 | A kind of post-processing temperature control system and method |
| CN109630260A (en) * | 2018-12-11 | 2019-04-16 | 潍柴动力股份有限公司 | The improvement method and system and automobile of a kind of diesel engine exhaust temperature |
| CN112590756A (en) * | 2020-12-15 | 2021-04-02 | 潍柴动力股份有限公司 | Hybrid power system operation state control method and device |
| CN113147725A (en) * | 2021-03-29 | 2021-07-23 | 广西玉柴机器股份有限公司 | Method for controlling temperature maintenance of hybrid power engine and vehicle-mounted terminal |
| CN114312741A (en) * | 2022-01-12 | 2022-04-12 | 东风商用车有限公司 | Method and system for performing engine thermal management based on P0 shallow mixing architecture |
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