CN106394549A

CN106394549A - Torque distribution method and device for hybrid vehicle

Info

Publication number: CN106394549A
Application number: CN201610797723.8A
Authority: CN
Inventors: 张龙聪; 秦兴权; 张兆龙; 易迪华
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2017-02-15
Anticipated expiration: 2036-08-31
Also published as: CN106394549B

Abstract

The invention discloses a torque distribution method for a hybrid vehicle. The torque distribution method comprises the following steps that automotive drive torque to be distributed is obtained; a large amount of economic torque distributed to an engine is obtained according to the automotive drive torque to be distributed and a hybrid manner; engine emission parameters corresponding to the automotive drive torque to be distributed are obtained for calculating the first emission total specific value corresponding to the automotive drive torque to be distributed, and the engine emission parameters corresponding to each economic torque are obtained for calculating the second emission total specific value corresponding to each economic torque; the economic torque of which the second emission total specific value is larger than the first emission total specific value is screened out, a torque distribution value of the engine under the automotive drive torque to be distributed and the hybrid manner is constructed according to the screened economic torque, and thus the economical efficiency and the emission performance of the engine can be taken into account at the same time under the hybrid manner. The invention further discloses a torque control method for the hybrid vehicle, a torque distribution device for the hybrid vehicle and a torque control device for the hybrid vehicle.

Description

Moment of torsion distribution method for hybrid vehicle and device

Technical field

The present invention relates to automobile technical field, particularly to a kind of moment of torsion distribution method for hybrid vehicle, one The torque control method of kind of hybrid vehicle, a kind of torque distribution device for hybrid vehicle, a kind of hybrid power The torque control device of automobile and a kind of hybrid vehicle.

Background technology

Hybrid vehicle has become one of vehicle solving environmental pollution and energy shortage most market potential.Mixing is dynamic Power automobile passes through reasonably to adopt motor to provide driving force, can reach the effect saving oil consumption, accordingly, the hybrid power of correlation All it is built-in with torque coordination allocation strategy, on the premise of not changing torque demand, reasonable distribution is sent out in the control unit of automobile Motivation and the moment of torsion of motor, make the efficiency of power assembly reach most preferably.Coordinated torque control distribution function has to hybrid electric vehicle There are important meaning, the data display of car load producer, moment of torsion distribution function is up to 7% to hybrid electric vehicle fuel-economizing contribution rate.

In order to save oil consumption, correlation technique propose can a kind of moment of torsion control allocation strategy, that is, allow engine always work at Near optimal fuel consumption curve, or, limit the working region of engine, the operating point of engine is limited in relative In high efficient district.But, correlation technique there is problems that, be solely focused on is Fuel Economy problem, not too The emission problems paying close attention to engine more, but the not necessarily discharge performance performance of the low region of the fuel consumption of engine is excellent Elegant region, has not given play to the advantage of hybrid vehicle energy-conservation and environmental protection.

Content of the invention

It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention First purpose is to propose a kind of moment of torsion distribution method for hybrid vehicle, and the method can take into account engine simultaneously Economy and emission performance, give full play of the advantage of hybrid vehicle energy-conservation and environmental protection.

Second object of the present invention is to propose a kind of torque control method of hybrid vehicle.The 3rd of the present invention Individual purpose is to propose a kind of torque distribution device for hybrid vehicle.Fourth object of the present invention is to propose one Plant the torque control device of hybrid vehicle.5th purpose of the present invention is to propose a kind of hybrid vehicle.

For reaching above-mentioned purpose, first aspect present invention embodiment proposes a kind of moment of torsion for hybrid vehicle and divides Method of completing the square, comprises the following steps：Obtain Automobile drive moment of torsion to be allocated；According to described Automobile drive moment of torsion to be allocated and institute The mixed dynamic pattern acquiring stating hybrid vehicle distributes to the multiple economic moment of torsion of engine, and wherein, described mixed dynamic model formula includes No motor power-assisted mixes dynamic model formula and motor power-assisted drive pattern；Obtain the described corresponding engine of Automobile drive moment of torsion to be allocated Discharge parameter, to calculate the total ratio of corresponding first emission of described Automobile drive moment of torsion to be allocated, and it is economical to obtain each Moment of torsion corresponding engine emission parameter, to calculate the total ratio of corresponding second emission of each economic moment of torsion；Filter out described The total ratio of second emission is more than the economic moment of torsion of the total ratio of described first emission, and according to the economic moment of torsion construction filtering out The moment of torsion apportioning cost of engine under described Automobile drive moment of torsion to be allocated and described mixed dynamic model formula.

The moment of torsion distribution method for hybrid vehicle proposing according to embodiments of the present invention, filters out the second emission Total ratio is more than the economic moment of torsion of the total ratio of the first emission, and is constructed in automobile to be allocated according to the economic moment of torsion filtering out The moment of torsion apportioning cost of engine under driving torque and mixed dynamic model formula, thus under mixed dynamic model formula, can take into account engine simultaneously Economy and emission performance, give full play of the advantage of hybrid vehicle energy-conservation and environmental protection.

According to one embodiment of present invention, when described mixed dynamic model formula is engine driving when no motor power-assisted mixes dynamic model formula Described hybrid vehicle and drive motor charges the battery, described according to described Automobile drive moment of torsion to be allocated and described mixed The multiple economic moment of torsion that the mixed dynamic pattern acquiring closing power vehicle distributes to engine includes：With described Automobile drive to be allocated N number of first moment of torsion under same engine speed is obtained, wherein, each first moment of torsion is respectively less than described to be allocated on the basis of moment of torsion Automobile drive moment of torsion, N is the positive integer more than 1；Calculate the equivalent fuel consumption of engine and the institute under each first moment of torsion State the engine effective specific fuel consumption under Automobile drive moment of torsion to be allocated；Equivalent for described engine fuel consumption is less than First moment of torsion of the engine effective specific fuel consumption under described Automobile drive moment of torsion to be allocated is as described economic moment of torsion.

According to one embodiment of present invention, the equivalent fuel oil of engine under each first moment of torsion is calculated according to below equation Consumption rate：

Be '=BB ÷ { PA+ (PB-PA) × η 1 × η, 2 × η, 3 × η 4 } × 1000

Wherein, Be ' is the equivalent fuel consumption of engine under the first moment of torsion, and BB is list under the first moment of torsion for the engine Position hour oil consumption, PA is the described corresponding engine power of Automobile drive moment of torsion to be allocated, and PB is described first moment of torsion pair The engine power answered, η 1 is the generating efficiency of motor, η 2 is the charge efficiency of battery, and η 3 is the electromotive efficiency of electric system, η 4 is the discharging efficiency of battery.

According to one embodiment of present invention, engine and motor when described mixed dynamic model formula is motor power-assisted drive pattern Jointly drive described hybrid vehicle, described according to described Automobile drive moment of torsion to be allocated and described hybrid vehicle The multiple economic moment of torsion that mixed dynamic pattern acquiring distributes to engine includes：Obtained on the basis of described Automobile drive moment of torsion to be allocated Take M the second moment of torsion under same engine speed, wherein, each second moment of torsion is all higher than described Automobile drive to be allocated and turns round Square, M is the positive integer more than 1；Calculate the equivalent fuel consumption of engine under each second moment of torsion and described vapour to be allocated Engine effective specific fuel consumption under car driving torque；Equivalent for described engine fuel consumption is less than described to be allocated Second moment of torsion of the engine effective specific fuel consumption under Automobile drive moment of torsion is as described economic moment of torsion.

According to one embodiment of present invention, the equivalent fuel oil of engine under each second moment of torsion is calculated according to below equation Consumption rate：

Ce '={ CC+ (PA-PC)/η 3 × η 4/k } ÷ { PC+ (PA-PC)/η } × 1000

Wherein, Ce ' is the equivalent fuel consumption of engine under the second moment of torsion, and CC is list under the second moment of torsion for the engine Position hour oil consumption, PA is the described corresponding engine power of Automobile drive moment of torsion to be allocated, and PC is described second moment of torsion pair The engine power answered, η 3 is the electromotive efficiency of electric system, and η 4 is the discharging efficiency of battery, and k is oil electricity conversion coefficient, and η is Final effective efficiency, η=η 3 × η 4.

According to one embodiment of present invention, described engine emission parameter includes carbon monoxide co discharge ratio, nitrogen oxidation Thing DS NOx Est ratio, the discharge of smoke intensity SF than and hydrocarbons CH discharge ratio, wherein, according to the corresponding oxygen of each economic moment of torsion Change carbon co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge and calculate each warp than sum The Ji total ratio of corresponding first emission of moment of torsion, and according to described demand torque corresponding carbon monoxide co discharge ratio, nitrogen oxidation Thing DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge calculate the second emission of described demand torque than sum Total ratio.

For reaching above-mentioned purpose, second aspect present invention embodiment proposes a kind of moment of torsion control side of hybrid vehicle Method, comprises the following steps：Obtain the current demand moment of torsion of described hybrid vehicle and currently mix dynamic model formula；According to described current Demand torque and currently mixed dynamic model formula simultaneously obtain engine torque apportioning cost, wherein, by upper by engine torque allocation table State the moment of torsion distribution method construction engine torque allocation table for hybrid vehicle of embodiment；Turned round according to described engine Square apportioning cost and described current demand moment of torsion carry out moment of torsion distribution to the engine of described hybrid vehicle and motor.

The torque control method of the hybrid vehicle proposing according to embodiments of the present invention, being used for by above-described embodiment The moment of torsion distribution method construction engine torque allocation table of hybrid vehicle, and mix dynamic model according to current demand moment of torsion and currently Formula simultaneously obtains engine torque apportioning cost by engine torque allocation table, and according to engine torque apportioning cost and current need Moment of torsion is asked to carry out moment of torsion distribution to the engine of hybrid vehicle and motor, thus under mixed dynamic model formula, can take into account simultaneously The economy of engine and emission performance, give full play of the advantage of hybrid vehicle energy-conservation and environmental protection.

For reaching above-mentioned purpose, third aspect present invention embodiment proposes a kind of moment of torsion for hybrid vehicle and divides It is equipped with and put, including：First acquisition module, for obtaining Automobile drive moment of torsion to be allocated；Second acquisition module, for according to institute State Automobile drive moment of torsion to be allocated and the mixed of described hybrid vehicle moves multiple economy that pattern acquiring distributes to engine Moment of torsion, wherein, described mixed dynamic model formula includes no motor power-assisted and mixes dynamic model formula and motor power-assisted drive pattern；3rd acquisition module, For obtaining described Automobile drive moment of torsion corresponding engine emission parameter to be allocated, driven with calculating described automobile to be allocated The total ratio of corresponding first emission of dynamic torque, and obtain the corresponding engine emission parameter of each economic moment of torsion, every to calculate The total ratio of corresponding second emission of individual economic moment of torsion；Screening module, is used for filtering out the total ratio of described second emission and is more than The economic moment of torsion of the total ratio of described first emission；Constructing module, for treating described according to the economic moment of torsion construction filtering out The moment of torsion apportioning cost of engine under the Automobile drive moment of torsion of distribution and described mixed dynamic model formula.

The torque distribution device for hybrid vehicle proposing according to embodiments of the present invention, is screened by screening module Go out the economic moment of torsion that the total ratio of the second emission is more than the total ratio of the first emission, constructing module is according to the economic moment of torsion filtering out The moment of torsion apportioning cost of construction engine under Automobile drive moment of torsion to be allocated and mixed dynamic model formula, thus under mixed dynamic model formula, energy Enough economy and emission performances simultaneously taking into account engine, give full play of the advantage of hybrid vehicle energy-conservation and environmental protection.

According to one embodiment of present invention, when described mixed dynamic model formula is engine driving when no motor power-assisted mixes dynamic model formula Described hybrid vehicle and drive motor charges the battery, described second acquisition module is further used for：With described to be allocated Automobile drive moment of torsion on the basis of obtain N number of first moment of torsion under same engine speed, and calculate under each first moment of torsion Engine effective specific fuel consumption under the equivalent fuel consumption of engine and described Automobile drive moment of torsion to be allocated, and will The equivalent fuel consumption of described engine is less than the engine effective specific fuel consumption under described Automobile drive moment of torsion to be allocated The first moment of torsion as described economic moment of torsion, wherein, each first moment of torsion is respectively less than described Automobile drive moment of torsion to be allocated, N It is the positive integer more than 1.

According to one embodiment of present invention, described second acquisition module calculates under each first moment of torsion according to below equation The equivalent fuel consumption of engine：

Be '=BB ÷ { PA+ (PB-PA) × η 1 × η, 2 × η, 3 × η 4 } × 1000

According to one embodiment of present invention, engine and motor when described mixed dynamic model formula is motor power-assisted drive pattern Jointly drive described hybrid vehicle, described second acquisition module is further used for：Turned round with described Automobile drive to be allocated Obtain M the second moment of torsion under same engine speed on the basis of square, and calculate the equivalent combustion of engine under each second moment of torsion Engine effective specific fuel consumption under specific oil consumption and described Automobile drive moment of torsion to be allocated, and by described engine etc. The second moment of torsion that effect fuel consumption is less than the engine effective specific fuel consumption under described Automobile drive moment of torsion to be allocated is made For described economic moment of torsion, wherein, each second moment of torsion is all higher than described Automobile drive moment of torsion to be allocated, and M is just whole more than 1 Number.

According to one embodiment of present invention, described second acquisition module calculates under each second moment of torsion according to below equation The equivalent fuel consumption of engine：

Ce '={ CC+ (PA-PC)/η 3 × η 4/k } ÷ { PC+ (PA-PC)/η } × 1000

According to one embodiment of present invention, described engine emission parameter includes carbon monoxide co discharge ratio, nitrogen oxidation Thing DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge ratio, wherein, described 3rd acquisition module is according to each warp Ji moment of torsion corresponding carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge Calculate the total ratio of corresponding first emission of each economic moment of torsion than sum, and according to the corresponding carbon monoxide of described demand torque Co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge calculate described demand than sum and turn round The total ratio of second emission of square.

For reaching above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of moment of torsion control dress of hybrid vehicle Put, including：First acquisition unit, for obtaining the current demand moment of torsion of described hybrid vehicle and currently mixing dynamic model formula；The Two acquiring units, according to described current demand moment of torsion and currently mix dynamic model formula and pass through engine torque allocation table acquisition engine Moment of torsion apportioning cost, constructs engine torque distribution by above-described embodiment for the torque distribution device of hybrid vehicle Table；Moment of torsion allocation unit, for according to described engine torque apportioning cost and described current demand moment of torsion to described hybrid power The engine of automobile and motor carry out moment of torsion distribution.

The torque control device of the hybrid vehicle proposing according to embodiments of the present invention, being used for by above-described embodiment The moment of torsion distribution method construction engine torque allocation table of hybrid vehicle, second acquisition unit according to current demand moment of torsion and Currently mix dynamic model formula and by engine torque allocation table obtain engine torque apportioning cost, and then moment of torsion allocation unit according to Motivation moment of torsion apportioning cost and current demand moment of torsion carry out moment of torsion distribution to the engine of hybrid vehicle and motor, thus mixed Economy and the emission performance of engine under dynamic model formula, can be taken into account simultaneously, give full play of hybrid vehicle energy-conservation and environmental protection Advantage.

For reaching above-mentioned purpose, fifth aspect present invention embodiment proposes a kind of hybrid vehicle, including described The torque control device of hybrid vehicle.

The hybrid vehicle proposing according to embodiments of the present invention, by the moment of torsion control dress of above-mentioned hybrid vehicle Putting, economy and the emission performance of engine under mixed dynamic model formula, being taken into account, thus giving full play of hybrid vehicle simultaneously Energy-conservation and the advantage of environmental protection.

Brief description

Fig. 1 is the structural representation of the power assembly system of the hybrid vehicle of one embodiment of the invention；

Fig. 2 is the flow chart of the moment of torsion distribution method for hybrid vehicle according to embodiments of the present invention；

Fig. 3 is the flow chart of the moment of torsion distribution method for hybrid vehicle according to an embodiment of the invention；

Fig. 4 is the flow chart of the moment of torsion distribution method for hybrid vehicle in accordance with another embodiment of the present invention；

Fig. 5 is the schematic diagram of the universal characteristic curve figure of engine according to an embodiment of the invention；

Fig. 6 is the flow chart of the torque control method of hybrid vehicle according to embodiments of the present invention；

Fig. 7 is the block diagram of the torque distribution device for hybrid vehicle according to embodiments of the present invention；With And

Fig. 8 is the block diagram of the torque control device of hybrid vehicle according to embodiments of the present invention.

Specific embodiment

Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.

Below with reference to the accompanying drawings to describe the moment of torsion distribution method for hybrid vehicle of embodiment of the present invention proposition, to mix The torque control method closing power vehicle, the torque distribution device being used for hybrid vehicle, the moment of torsion control of hybrid vehicle Device processed and hybrid vehicle.

Wherein, a specific embodiment according to the present invention, hybrid vehicle can be single-axle parallel hybrid automobile, Specifically, the power assembly system of single-axle parallel hybrid automobile can be as shown in figure 1, its power assembly system mainly includes sending out Motivation and engine controller ECU, dynamoelectric machine and dynamoelectric machine controller MCU, clutch, gearbox AMT and change Fast case controller TCU, entire car controller VCU, wherein, engine is connected with dynamoelectric machine by clutch, electronic/to generate electricity Machine is connected with wheel by gearbox AMT.

The mode of operation of hybrid vehicle includes electric-only mode and mixed dynamic model formula, and mixed dynamic model formula includes motor power-assisted and drives Dynamic model formula and no motor power-assisted drive pattern.Wherein, in electric-only mode, only provide driving force by motor/generator, electronic/ Generator directly passes through gearbox AMT driving moment；In motor power-assisted drive pattern, jointly provide driving by engine and motor Power, that is, driven by engine dynamoelectric machine and pass through gearbox AMT driving moment, dynamoelectric machine is also by gearbox simultaneously AMT driving moment；In no motor power-assisted drive pattern, only provide driving force by engine, i.e. driven by engine dynamoelectric machine And passing through gearbox AMT driving moment, driven by engine dynamoelectric machine generates electricity and thinks that battery charges.

It should be appreciated that the power that the hybrid vehicle of the embodiment of the present invention includes but is not limited to Fig. 1 embodiment is total One-tenth system, correspondingly, the moment of torsion distribution method of the embodiment of the present invention is also applied for but is not limited to the power assembly system of Fig. 1 embodiment System.

The moment of torsion distribution method for hybrid vehicle of first aspect present invention embodiment is described below.

Fig. 2 is the flow chart of the moment of torsion distribution method for hybrid vehicle according to embodiments of the present invention.As Fig. 2 institute Show, the moment of torsion distribution method for hybrid vehicle comprises the following steps：

S1：Obtain Automobile drive moment of torsion to be allocated.

Wherein, Automobile drive moment of torsion refers to drive hybrid vehicle to reach the driving torque needed for preset vehicle speed.

S2：Engine is distributed to according to the mixed dynamic pattern acquiring of Automobile drive moment of torsion to be allocated and hybrid vehicle Multiple economic moments of torsion, wherein, mixed dynamic model formula includes no motor power-assisted and mixes dynamic model formula and motor power-assisted drive pattern.

Wherein, economic moment of torsion refers to be conducive to the moment of torsion of engine economy, and in other words, engine executes economic moment of torsion to be had Raising beneficial to car load economy.

S3：Obtain Automobile drive moment of torsion corresponding engine emission parameter to be allocated, driven with calculating automobile to be allocated The total ratio of corresponding first emission of dynamic torque, and obtain the corresponding engine emission parameter of each economic moment of torsion, every to calculate The total ratio of corresponding second emission of individual economic moment of torsion.

S4：Filter out the economic moment of torsion that the total ratio of the second emission is more than the total ratio of the first emission, and according to filtering out Economic moment of torsion construction engine under Automobile drive moment of torsion to be allocated and mixed dynamic model formula moment of torsion apportioning cost.

That is, in the economic moment of torsion being conducive to engine economy, filtering out further and be conducive to engine to arrange The economic moment of torsion of putting property, thus, just obtains the moment of torsion apportioning cost that can simultaneously take into account energy-conservation and environmental protection.

The moment of torsion distribution method for hybrid vehicle of the embodiment of the present invention is described below in detail.

According to one embodiment of present invention, as shown in figure 3, starting when mixed dynamic model formula is the no mixed dynamic model formula of motor power-assisted Machine drives hybrid vehicle and drive motor charges the battery, according to Automobile drive moment of torsion to be allocated and hybrid vehicle Mixed dynamic pattern acquiring distribute to the multiple economic moment of torsion of engine and include：

S21：N number of first moment of torsion under same engine speed is obtained on the basis of Automobile drive moment of torsion to be allocated, its In, each first moment of torsion is respectively less than Automobile drive moment of torsion to be allocated, and N is the positive integer more than 1.

Wherein, after obtaining Automobile drive moment of torsion to be allocated, pure can be obtained according to universal characteristic curve of engine The operating point of engine when i.e. no moment of torsion distributes under motivation pattern, in pure engine mode/no moment of torsion distribution, only engine Driving force is provided, and engine is without drive motor/electrical power generators.But the operating point of engine can be because the power-assisted of motor Or drive motor changes to cell power generation.

As a example the universal characteristic curve figure of certain shown in by Fig. 5 engine, A point is engine in a certain rotating speed and torsion Operating point under square, A point is expressed as the engine working point that during pure engine mode, car load needs, and that is, no moment of torsion starts when distributing The operating point of machine；B point is expressed as the operating point of engine during no motor power-assisted mixed dynamic model formula, and that is, B point is expressed as hybrid power vapour Car be in mixed dynamic model formula and no motor booster engine when, when that is, engine needs drive motor to charge the battery, engine Operating point, now, because motor is operated in generating state, is the equal of load, so constant in speed is engine speed In the case of constant, it is A point during with respect to pure engine mode, the driving force that engine provides can become larger；C point represents electricity The operating point of engine when machine aided power mixes dynamic model formula, that is, C point be expressed as hybrid vehicle and be in mixed dynamic model formula and have motor to help During force engine, when that is, engine and motor drive vehicle jointly, the operating point of engine, now, because motor provides one Point driving force, thus in speed constant be engine speed constant in the case of, be A point during with respect to pure engine mode, The driving force that engine provides can be smaller.

Thus, when Automobile drive moment of torsion corresponds to A point, according to the mixed dynamic model formula of hybrid vehicle, it is possible to obtain N number of First moment of torsion is several B points, because being used for the torque value that the moment of torsion that generates electricity can be different, as long as no exceeding the outer of engine Characteristic moment of torsion, is to mark off much different B points, such as B1, B2, B3, B4 ..., and then can from N number of first torsion Multiple economic moments of torsion are filtered out in square.

S22：Calculate under the equivalent fuel consumption of engine and Automobile drive moment of torsion to be allocated under each first moment of torsion Engine effective specific fuel consumption.

Specifically, the equivalent fuel consumption of engine under each first moment of torsion can be calculated according to below equation：

Be '=BB ÷ { PA+ (PB-PA) × η 1 × η, 2 × η, 3 × η 4 } × 1000

Wherein, Be ' is the equivalent fuel consumption of engine under the first moment of torsion, and BB is list under the first moment of torsion for the engine Position hour oil consumption, PA is the corresponding engine power of Automobile drive moment of torsion to be allocated, and PB is that the first moment of torsion is corresponding to be started Acc power, η 1 is the generating efficiency of motor, η 2 is the charge efficiency of battery, and η 3 is the electromotive efficiency of electric system, and η 4 is battery Discharging efficiency.

S23：Equivalent for engine fuel consumption is less than the effective fuel oil of engine under Automobile drive moment of torsion to be allocated First moment of torsion of consumption rate is as economic moment of torsion.

If that is, the equivalent fuel consumption of the engine under the first moment of torsion is less than Automobile drive moment of torsion to be allocated Under engine effective specific fuel consumption, then using this first moment of torsion as economic moment of torsion；If engine under the first moment of torsion etc. Effect fuel consumption is more than or equal to the engine effective specific fuel consumption under Automobile drive moment of torsion to be allocated, then not by this One moment of torsion is as economic moment of torsion.

Specifically, when engine is operated in B point, the moment of torsion relations of distribution of engine and motor are：Engine section Moment of torsion is used for providing Automobile drive moment of torsion, and remainder moment of torsion is provided to motor to charge to battery., it is used for filling taking Fig. 5 as a example Electricity power Δ P be：

Δ P=PB-PA (1)

Wherein, PA is the corresponding engine power of Automobile drive moment of torsion to be allocated, and that is, moment of torsion is allocated in the power of A point, It is equal to the engine power meeting vehicle traction moment of torsion, PB is that moment of torsion is allocated in B point for the corresponding engine power of the first moment of torsion Engine power, namely the real output (corresponding with the moment of torsion apportioning cost of this point) of engine, higher than the power of A point PA, the two difference is used for the power Δ P charging for engine.

The power Δ P that engine is used for charging will be through generating efficiency η 1 of motor, charge efficiency η 2 of battery, department of electrical engineering After the electromotive efficiency η 3 of system, this series of efficiency conversion of discharging efficiency η 4 of battery, finally it is only and effectively exports on wheel Energy.That is, Δ P can not possibly very effectively act on car load, be through the effect of electric system and battery Rate converts, and final effective efficiency η is：

η=η 1 × η, 2 × η, 3 × η 4 (2)

So, with respect to power P A of A point, power Δ P that engine increases really is able to be applied to effective on car load Power Δ P ' is：

Δ P '=Δ P × η (3)

Thus, B point is that the corresponding actually active power P B ' of the first moment of torsion is：

PB '=PA+ (PB-PA) × η (4)

Unit hour oil consumption BB that engine is the first moment of torsion in B point can be obtained by the universal data of engine, and according to send out The definition of motivation effective specific fuel consumption can obtain Be=BB ÷ P × 1000, so, B point is the corresponding engine of the first moment of torsion and electricity The actual equivalent fuel consumption Be ' of machine is：

Be '=BB ÷ { PA+ (PB-PA) × η 1 × η, 2 × η, 3 × η 4 } × 1000 (5)

In addition, can read the effective specific fuel consumption of engine according to the universal data of engine, and then, according to engine ten thousand There is data can obtain the engine effective specific fuel consumption under Automobile drive moment of torsion to be allocated, that is, the engine of A point effectively fires Specific oil consumption Ae.

If Be '<Ae, then when the equivalent fuel consumption of reality of explanation B point is less than no moment of torsion distribution, the engine of A point has Effect fuel consumption, moment of torsion apportioning cost now is the point favourable to economy, and that is, favourable moment of torsion apportioning cost, executes favourable moment of torsion Apportioning cost is conducive to the raising of car load economy, and now the corresponding moment of torsion of B point can be used as economic moment of torsion；

If Be ' is Ae, the engine of A point when illustrating that the equivalent fuel consumption of reality of B point is more than no moment of torsion distribution Effective specific fuel consumption, moment of torsion apportioning cost now is the point that economy is harmful to, and that is, unfavorable moment of torsion apportioning cost is it is impossible to according to this Unfavorable moment of torsion apportioning cost execution moment of torsion distribution, now the corresponding moment of torsion of B point can not be used as economic moment of torsion.

According to one embodiment of present invention, as shown in figure 4, when mixed dynamic model formula be motor power-assisted drive pattern when engine Jointly drive hybrid vehicle with motor, obtained according to the mixed dynamic model formula of Automobile drive moment of torsion to be allocated and hybrid vehicle The multiple economic moment of torsion distributing to engine is taken to include：

S24：M the second moment of torsion under same engine speed is obtained on the basis of Automobile drive moment of torsion to be allocated, its In, each second moment of torsion is all higher than Automobile drive moment of torsion to be allocated, and M is the positive integer more than 1.

As described in step S21, in Fig. 5 C point represent motor power-assisted mix dynamic model formula when engine operating point, that is, C point represent When being in mixed dynamic model formula and have motor booster engine for hybrid vehicle, when that is, engine and motor drive vehicle jointly, The operating point of engine, now, because motor provides a part of driving force, constant in speed is that engine speed is constant In the case of, it is A point during with respect to pure engine mode, the driving force that engine provides can be smaller.

And then, when Automobile drive moment of torsion corresponds to A point, according to the mixed dynamic model formula of hybrid vehicle, it is possible to obtain M Second moment of torsion is several C points, because the booster torquemoment value of motor can also divide number of values, as long as the outer spy less than motor Property torque value, you can mark off much different C points, such as C1, C2, C3, C4 ..., and then can be from M the second moment of torsion Filter out multiple economic moments of torsion.

S25：Calculate under the equivalent fuel consumption of engine and Automobile drive moment of torsion to be allocated under each second moment of torsion Engine effective specific fuel consumption.

Specifically, the equivalent fuel consumption of engine under each second moment of torsion can be calculated according to below equation：

Ce '={ CC+ (PA-PC)/η 3 × η 4/k } ÷ { PC+ (PA-PC)/η } × 1000

Wherein, Ce ' is the equivalent fuel consumption of engine under the second moment of torsion, and CC is list under the second moment of torsion for the engine Position hour oil consumption, PA is the corresponding engine power of Automobile drive moment of torsion to be allocated, and PC is that the second moment of torsion is corresponding to be started Acc power, η 3 is the electromotive efficiency of electric system, and η 4 is the discharging efficiency of battery, and k is oil electricity conversion coefficient, and η is finally effective Efficiency, η=η 3 × η 4.

S26：Equivalent for engine fuel consumption is less than the effective fuel oil of engine under Automobile drive moment of torsion to be allocated Second moment of torsion of consumption rate is as economic moment of torsion.

If that is, the equivalent fuel consumption of the engine under the second moment of torsion is less than Automobile drive moment of torsion to be allocated Under engine effective specific fuel consumption, then using this second moment of torsion as economic moment of torsion；If engine under the second moment of torsion etc. Effect fuel consumption is more than or equal to the engine effective specific fuel consumption under Automobile drive moment of torsion to be allocated, then not by this Two moments of torsion are as economic moment of torsion.

Specifically, when engine is operated in C point, the moment of torsion relations of distribution of engine and motor are：Engine and electricity Machine provides driving vehicle torque jointly, and that is, the moment of torsion sum of the two is Automobile drive moment of torsion.Still, motor provides taking Fig. 5 as a example Power Δ P is：

Δ P=PA-PC (6)

Wherein, PA is the corresponding engine power of Automobile drive moment of torsion to be allocated, and that is, moment of torsion is allocated in the power of A point, It is equal to the engine power meeting vehicle traction moment of torsion, PC is that moment of torsion is allocated in C point for the corresponding engine power of the second moment of torsion Engine power, in order to meet the driving of vehicle, the power that Δ P provides for motor.

The power Δ P that motor provides will this be a series of through the discharging efficiency η 4 of the electromotive efficiency η 3 of electric system, battery Efficiency conversion after, be finally only the effective energy of battery consumption, final effective efficiency η is：

η=η 3 × η 4 (7)

So, the real discharge power Δ P ' of battery：

Δ P '=Δ P/ η (8)

Therefore, C point is that the corresponding actual equivalent power PC ' of the second moment of torsion is：

PC '=PC+ (PA-PC)/η (9)

By the universal data of engine and oil electricity conversion coefficient k, (k is typically taken as 3.02, is generally recorded in manufacturer data, also may be used To be obtained according to experiment calculation) the actual hour oil consumption that can obtain C point is：

CC '=CC+ (PA-PC)/η/k (10)

Wherein, CC is the unit hour oil consumption of the second moment of torsion in B point for engine, and CC can by the universal data of engine ?.

Further, Ce=CC ÷ P × 1000 can be obtained according to the definition of engine effective specific fuel consumption, so, C point is the The actual equivalent fuel consumption Ce ' of the corresponding engine of two moments of torsion and motor is：

Ce '={ CC+ (PA-PC)/η 3 × η 4/k } ÷ { PC+ (PA-PC)/η } × 1000 (11)

If Ce '<Ae, when illustrating that the equivalent fuel consumption of reality of C point is less than no moment of torsion distribution, the engine of A point is effective Fuel consumption, moment of torsion apportioning cost now is the point favourable to economy, i.e. favourable moment of torsion apportioning cost, executes favourable moment of torsion and divides Join the raising that value is conducive to car load economy, now the corresponding moment of torsion of C point can be used as economic moment of torsion；

If Ce ' is Ae, the engine of A point when illustrating that the equivalent fuel consumption of reality of C point is more than no moment of torsion distribution Effective specific fuel consumption, moment of torsion apportioning cost now is the point that economy is harmful to, and that is, unfavorable moment of torsion apportioning cost is it is impossible to according to this Unfavorable moment of torsion apportioning cost execution moment of torsion distribution, now the corresponding moment of torsion of C point can not be used as economic moment of torsion.

According to one embodiment of present invention, engine emission parameter includes carbon monoxide co discharge ratio, nitrogen oxides NOX Discharge ratio, the discharge of smoke intensity SF than and hydrocarbons CH discharge ratio, wherein, according to the corresponding carbon monoxide co of each economic moment of torsion Discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge calculate each economic moment of torsion than sum The total ratio of corresponding first emission, and moment of torsion corresponding carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est according to demand Than the discharge of, smoke intensity SF than and hydrocarbons CH discharge calculate the total ratio of the second emission of demand torque than sum.

Specifically, when Automobile drive moment of torsion corresponds to A point, by the calculating of above-mentioned steps S21-S23, it is possible to obtain No motor power-assisted mixes the multiple economic moment of torsion under dynamic model formula, and the calculating of step S24-S26, it is possible to obtain motor power-assisted is mixed dynamic Multiple economic moment of torsion under pattern.

When mixed dynamic model formula is that no motor power-assisted mixes dynamic model formula, when driven by engine generator is to power battery charging, this When can to obtain multiple B points being conducive to economy be economic moment of torsion, for example, Bc1, Bc2, Bc3, Bc4 ....Corresponding to Bc1, Bc2, Bc3, Bc4 ... point, can be discharged parameter from Engine Universal Characteristics data accordingly, and discharge parameter is carried out Addition process can get the total ratio of corresponding second emission.

Taking for Bc1 point as a example, by Engine Universal Characteristics data can get B1co (g/kwh), B1NOX (g/kwh), B1SF(g/kwh)、B1CH(g/kwh)；Then this four data are done addition process can obtain, B1co (g/kwh)+B1NOX (g/ Kwh)+B1SF (g/kwh)+B1CH (g/kwh)=X1 (g/kwh), wherein, X1 (g/kwh) numerical value represents favourable in economy In the case of the total ratio of the second emission that obtains, that is, X1 (g/kwh) be the corresponding economic moment of torsion of Bc1 point the second emission always than Value.

So, all B point (Bc1, Bc2, Bc3, Bc4 ...) being conducive to economy are calculated corresponding second Emission total ratio such as X1, X2, X3, X4 ..., therefrom filter out the B point of the total ratio of the first emission less than A point, that is, X1, X2, X3, X4 ... be less than the total ratio of the first emission of A point in principle, in fact most B points are eligible 's.

Thus, in the case of ensureing that economy is favourable, discharge numerical value is also advantageous, and is also that environmental protection is favourable, so Ensure that the energy-conservation of hybrid vehicle and the advantage of two aspects of environmental protection.

When mixed dynamic model formula mixes dynamic model formula for motor power-assisted, motor provides a part of power-assisted, now can much be had C point beneficial to economy is economic moment of torsion, for example, Cb1, Cb2, Cb3, Cb4 ....Corresponding to Cb1, Cb2, Cb3, Cb4 ... Point, can be discharged parameter from Engine Universal Characteristics data accordingly, carries out addition process to discharge parameter To the total ratio of corresponding second emission.

Taking for Cb1 point as a example, by Engine Universal Characteristics data can get C1co (g/kwh), C1NOX (g/kwh), C1SF(g/kwh)、C1CH(g/kwh)；Then this four data are done addition process can obtain, C1co (g/kwh)+C1NOX (g/ Kwh)+C1SF (g/kwh)+C1CH (g/kwh)=Y1 (g/kwh), wherein, Y1 (g/kwh) numerical value represents favourable in economy In the case of the total ratio of the second emission that obtains, that is, Y 1 (g/kwh) be the corresponding economic moment of torsion of Cb1 point the second emission total Ratio.

So, all C point (Cb1, Cb2, Cb3, Cb4 ...) being conducive to economy are calculated corresponding second Emission total ratio such as Y1, Y2, Y3, Y4 ..., therefrom filter out the C point of the total ratio of the first emission less than A point, that is, Y1, Y2, Y3, Y4 ... are less than the total ratio of the first emission of A point in principle, and in fact most C points are eligible 's.

In addition, it is necessary to explanation, the power of engine, moment of torsion, rotating speed, fuel consumption, unit hour oil consumption, co Brake specific exhaust emission, NOX brake specific exhaust emission, smoke intensity SF brake specific exhaust emission, hydrocarbons CH brake specific exhaust emission etc. all can the universal spies of engine shown in Fig. 5 Linearity curve figure obtains, that is, record the curve of universal data.

To sum up, the moment of torsion distribution method for hybrid vehicle proposing according to embodiments of the present invention, filters out second The total ratio of emission is more than the economic moment of torsion of the total ratio of the first emission, and is constructed to be allocated according to the economic moment of torsion filtering out Automobile drive moment of torsion and mixed dynamic model formula under engine moment of torsion apportioning cost, thus under mixed dynamic model formula, can take into account simultaneously send out The economy of motivation and emission performance, give full play of the advantage of hybrid vehicle energy-conservation and environmental protection.

The torque control method of the hybrid vehicle of second aspect present invention embodiment proposition is described below.

Fig. 6 is the flow chart of the torque control method of hybrid vehicle according to embodiments of the present invention.As shown in fig. 6, The torque control method of this hybrid vehicle comprises the following steps：

S10：Obtain the current demand moment of torsion of hybrid vehicle and currently mix dynamic model formula.

S20：According to current demand moment of torsion and currently mix dynamic model formula and by engine torque allocation table obtain engine torsion Square apportioning cost, wherein, is divided for the moment of torsion distribution method construction engine torque of hybrid vehicle by above-described embodiment Join.

S30：According to engine torque apportioning cost and current demand moment of torsion, the engine of hybrid vehicle and motor are entered Row moment of torsion distributes.

That is, by the moment of torsion distribution method for hybrid vehicle of above-described embodiment, the difference that can obtain Automobile drive moment of torsion corresponding moment of torsion apportioning cost under different blended dynamic model formula, and then can move beforehand through calculating acquisition different blended Favourable energy-conservation and moment of torsion apportioning cost of both environmental protection under pattern, make corresponding MAP, and are stored in the control of hybrid vehicle In device.

So, accordingly mix carry out torque coordination distribution under dynamic model formula when, directly passing through tables look-up find corresponding optimal Moment of torsion apportioning cost, specifically, can select the equivalent fuel consumption of engine and the in the multiple moment of torsion apportioning costs meeting condition As optimal moment of torsion apportioning cost, this optimal moment of torsion apportioning cost is exactly the minimum moment of torsion apportioning cost of two emissions total ratio sum Composite fuel economy and the point of emission performance optimum.Then, according to this optimal moment of torsion apportioning cost, engine and motor are carried out Torque coordination distributes, thus ensure that two aspect advantages of hybrid vehicle energy-conservation and environmental protection.

The torque distribution device for hybrid vehicle of third aspect present invention embodiment proposition is described below.

Fig. 7 is the block diagram of the torque distribution device for hybrid vehicle according to embodiments of the present invention.As Shown in Fig. 7, this device includes：First acquisition module 10, the second acquisition module 20, the 3rd acquisition module 30, screening module 40 and Constructing module 50.

Wherein, the first acquisition module 10 is used for obtaining Automobile drive moment of torsion to be allocated；Second acquisition module 20 is used for root Distribute to the multiple economic moment of torsion of engine according to the mixed dynamic pattern acquiring of Automobile drive moment of torsion to be allocated and hybrid vehicle, Wherein, mixed dynamic model formula includes the mixed dynamic model formula of no motor power-assisted and motor power-assisted drive pattern；3rd acquisition module 30 is used for obtaining Automobile drive moment of torsion corresponding engine emission parameter to be allocated, to calculate Automobile drive moment of torsion corresponding first to be allocated The total ratio of emission, and obtain the corresponding engine emission parameter of each economic moment of torsion, corresponding to calculate each economic moment of torsion The total ratio of second emission；Screening module 40 is used for filtering out the warp that the total ratio of the second emission is more than the total ratio of the first emission Ji moment of torsion；The economic moment of torsion that constructing module 50 is used for according to filtering out constructs in Automobile drive moment of torsion to be allocated and mixed dynamic model formula The moment of torsion apportioning cost of lower engine.

According to one embodiment of present invention, when mixed dynamic model formula is engine driving mixing when no motor power-assisted mixes dynamic model formula Power vehicle and drive motor charges the battery, the second acquisition module 20 is further used for：With Automobile drive moment of torsion to be allocated On the basis of obtain N number of first moment of torsion under same engine speed, and calculate the equivalent fuel oil of engine under each first moment of torsion Engine effective specific fuel consumption under consumption rate and Automobile drive moment of torsion to be allocated, and by equivalent for engine fuel consumption Rate is less than the first moment of torsion of the engine effective specific fuel consumption under Automobile drive moment of torsion to be allocated as economic moment of torsion, its In, each first moment of torsion is respectively less than Automobile drive moment of torsion to be allocated, and N is the positive integer more than 1.

Specifically, the second acquisition module 20 can calculate the equivalent fuel oil of engine under each first moment of torsion according to below equation Consumption rate：

Be '=BB ÷ { PA+ (PB-PA) × η 1 × η, 2 × η, 3 × η 4 } × 1000

According to one embodiment of present invention, when mixed dynamic model formula is motor power-assisted drive pattern, engine and motor are common Drive hybrid vehicle, the second acquisition module 20 is further used for：Obtained same on the basis of Automobile drive moment of torsion to be allocated M under one engine speed the second moment of torsion, and calculate the equivalent fuel consumption of engine under each second moment of torsion and treat point Engine effective specific fuel consumption under the Automobile drive moment of torsion joined, and equivalent for engine fuel consumption is less than to be allocated Automobile drive moment of torsion under engine effective specific fuel consumption the second moment of torsion as economic moment of torsion, wherein, each second torsion Square is all higher than Automobile drive moment of torsion to be allocated, and M is the positive integer more than 1.

Specifically, the second acquisition module 20 can calculate the equivalent fuel oil of engine under each second moment of torsion according to below equation Consumption rate：

Ce '={ CC+ (PA-PC)/η 3 × η 4/k } ÷ { PC+ (PA-PC)/η } × 1000

According to one embodiment of present invention, engine emission parameter may include carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge ratio, wherein, the 3rd acquisition module is according to each economic moment of torsion Sum is compared in corresponding carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge Calculate the total ratio of corresponding first emission of each economic moment of torsion, and according to demand moment of torsion corresponding carbon monoxide co discharge ratio, Nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge calculate the second discharge of demand torque than sum The total ratio of thing.

To sum up, the torque distribution device for hybrid vehicle proposing according to embodiments of the present invention, by screening mould Block filters out the economic moment of torsion that the total ratio of the second emission is more than the total ratio of the first emission, and constructing module is according to the warp filtering out The moment of torsion apportioning cost of Ji moment of torsion construction engine under Automobile drive moment of torsion to be allocated and mixed dynamic model formula, thus in mixed dynamic model formula Under, economy and the emission performance of engine can be taken into account simultaneously, give full play of the advantage of hybrid vehicle energy-conservation and environmental protection.

The torque control device of the hybrid vehicle of fourth aspect present invention embodiment proposition is described below.

Fig. 8 is the block diagram of the torque control device of hybrid vehicle according to embodiments of the present invention.As Fig. 8 institute Show, this device includes：First acquisition unit 100, second acquisition unit 200 and moment of torsion allocation unit 300.

First acquisition unit 100 is used for obtaining the current demand moment of torsion of hybrid vehicle and currently mixes dynamic model formula；Second Acquiring unit 200 is used for according to current demand moment of torsion and currently mixes dynamic model formula and by engine torque allocation table acquisition engine Moment of torsion apportioning cost, constructs engine torque distribution by above-described embodiment for the torque distribution device of hybrid vehicle Table；Moment of torsion allocation unit 300 is used for according to engine torque apportioning cost and current demand moment of torsion, hybrid vehicle being started Machine and motor carry out moment of torsion distribution.

Fifth aspect present invention embodiment proposes a kind of hybrid vehicle.

The hybrid vehicle of the embodiment of the present invention includes the torque control device of the hybrid vehicle of above-described embodiment.

In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time The orientation of instruction such as pin ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship be based on orientation shown in the drawings or Position relationship, is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three Individual etc., unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements, limit unless otherwise clear and definite.For those of ordinary skill in the art For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible It is the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel Close and combine.

Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims

1. a kind of moment of torsion distribution method for hybrid vehicle is it is characterised in that comprise the following steps：

Obtain Automobile drive moment of torsion to be allocated；

Engine is distributed to according to the mixed dynamic pattern acquiring of described Automobile drive moment of torsion to be allocated and described hybrid vehicle Multiple economic moment of torsion, wherein, described mixed dynamic model formula includes no motor power-assisted and mixes dynamic model formula and motor power-assisted drive pattern；

Obtain described Automobile drive moment of torsion corresponding engine emission parameter to be allocated, driven with calculating described automobile to be allocated The total ratio of corresponding first emission of dynamic torque, and obtain the corresponding engine emission parameter of each economic moment of torsion, every to calculate The total ratio of corresponding second emission of individual economic moment of torsion；

Filter out the economic moment of torsion that the total ratio of described second emission is more than the total ratio of described first emission, and according to filtering out Economic moment of torsion construction engine under described Automobile drive moment of torsion to be allocated and described mixed dynamic model formula moment of torsion apportioning cost.

2. the moment of torsion distribution method for hybrid vehicle according to claim 1 is it is characterised in that work as described mixed dynamic Pattern is hybrid vehicle described in engine driving and drive motor charges the battery when no motor power-assisted mixes dynamic model formula, described Engine are distributed to according to the mixed dynamic pattern acquiring of described Automobile drive moment of torsion to be allocated and described hybrid vehicle more Individual economic moment of torsion includes：

Obtain N number of first moment of torsion under same engine speed on the basis of described Automobile drive moment of torsion to be allocated, wherein, often Individual first moment of torsion is respectively less than described Automobile drive moment of torsion to be allocated, and N is the positive integer more than 1；

Calculate sending out under the equivalent fuel consumption of engine and described Automobile drive moment of torsion to be allocated under each first moment of torsion Motivation effective specific fuel consumption；

Equivalent for described engine fuel consumption is less than the effective fuel oil of engine under described Automobile drive moment of torsion to be allocated First moment of torsion of consumption rate is as described economic moment of torsion.

3. the moment of torsion distribution method for hybrid vehicle according to claim 2 is it is characterised in that according to following public affairs Formula calculates the equivalent fuel consumption of engine under each first moment of torsion：

Be '=BB ÷ { PA+ (PB-PA) × η 1 × η, 2 × η, 3 × η 4 } × 1000

Wherein, Be ' is the equivalent fuel consumption of engine under the first moment of torsion, and BB is that unit under the first moment of torsion for the engine is little When oil consumption, PA is the described corresponding engine power of Automobile drive moment of torsion to be allocated, PB be described first moment of torsion corresponding Engine power, η 1 is the generating efficiency of motor, η 2 is the charge efficiency of battery, and η 3 is the electromotive efficiency of electric system, and η 4 is The discharging efficiency of battery.

4. the moment of torsion distribution method for hybrid vehicle according to claim 1 is it is characterised in that work as described mixed dynamic Pattern is that during motor power-assisted drive pattern, engine and motor jointly drive described hybrid vehicle, treats point described in described basis The Automobile drive moment of torsion joined and the mixed of described hybrid vehicle move the multiple economic moment of torsion bag that pattern acquiring distributes to engine Include：

Obtain M the second moment of torsion under same engine speed on the basis of described Automobile drive moment of torsion to be allocated, wherein, often Individual second moment of torsion is all higher than described Automobile drive moment of torsion to be allocated, and M is the positive integer more than 1；

Calculate sending out under the equivalent fuel consumption of engine and described Automobile drive moment of torsion to be allocated under each second moment of torsion Motivation effective specific fuel consumption；

Equivalent for described engine fuel consumption is less than the effective fuel oil of engine under described Automobile drive moment of torsion to be allocated Second moment of torsion of consumption rate is as described economic moment of torsion.

5. the moment of torsion distribution method for hybrid vehicle according to claim 4 is it is characterised in that according to following public affairs Formula calculates the equivalent fuel consumption of engine under each second moment of torsion：

Ce '={ CC+ (PA-PC)/η 3 × η 4/k } ÷ { PC+ (PA-PC)/η } × 1000

Wherein, Ce ' is the equivalent fuel consumption of engine under the second moment of torsion, and CC is that unit under the second moment of torsion for the engine is little When oil consumption, PA is the described corresponding engine power of Automobile drive moment of torsion to be allocated, PC be described second moment of torsion corresponding Engine power, η 3 is the electromotive efficiency of electric system, and η 4 is the discharging efficiency of battery, and k is oil electricity conversion coefficient, and η is final Effective efficiency, η=η 3 × η 4.

6. the moment of torsion distribution method for hybrid vehicle according to claim 1 is it is characterised in that described engine Discharge parameter includes carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge Ratio wherein, compares according to each economic moment of torsion corresponding carbon monoxide co discharge ratio, the discharge of nitrogen oxides DS NOx Est ratio, smoke intensity SF And hydrocarbons CH discharge calculates the total ratio of corresponding first emission of each economic moment of torsion than sum, and according to described demand Moment of torsion corresponding carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH discharge ratio Sum calculates the total ratio of the second emission of described demand torque.

7. a kind of torque control method of hybrid vehicle is it is characterised in that comprise the following steps：

Obtain the current demand moment of torsion of described hybrid vehicle and currently mix dynamic model formula；

According to described current demand moment of torsion and currently mix dynamic model formula and by engine torque allocation table acquisition engine torque divide Join value, wherein, sent out by the moment of torsion distribution method construction for hybrid vehicle as any one of claim 1-6 Motivation moment of torsion allocation table；

According to described engine torque apportioning cost and described current demand moment of torsion to the engine of described hybrid vehicle and electricity Machine carries out moment of torsion distribution.

8. a kind of torque distribution device for hybrid vehicle is it is characterised in that include：

First acquisition module, for obtaining Automobile drive moment of torsion to be allocated；

Second acquisition module, for the mixed dynamic model formula according to described Automobile drive moment of torsion to be allocated and described hybrid vehicle Obtain the multiple economic moment of torsion distributing to engine, wherein, described mixed dynamic model formula includes no motor power-assisted and mixes dynamic model formula and motor Power-assisted drive pattern；

3rd acquisition module, for obtaining described Automobile drive moment of torsion corresponding engine emission parameter to be allocated, to calculate The total ratio of corresponding first emission of described Automobile drive moment of torsion to be allocated, and obtain the corresponding engine of each economic moment of torsion Discharge parameter, to calculate the total ratio of corresponding second emission of each economic moment of torsion；

Screening module, is more than the economic torsion of the total ratio of described first emission for filtering out the total ratio of described second emission Square；

Constructing module, for moving in described Automobile drive moment of torsion to be allocated and described mixing according to the economic moment of torsion construction filtering out The moment of torsion apportioning cost of engine under pattern.

9. the torque distribution device for hybrid vehicle according to claim 8 is it is characterised in that work as described mixed dynamic Pattern is hybrid vehicle described in engine driving and drive motor charges the battery when no motor power-assisted mixes dynamic model formula, described Second acquisition module is further used for：

Obtain N number of first moment of torsion under same engine speed on the basis of described Automobile drive moment of torsion to be allocated, and calculate The engine under the equivalent fuel consumption of engine and described Automobile drive moment of torsion to be allocated under each first moment of torsion is effective Fuel consumption, and equivalent for described engine fuel consumption is less than starting under described Automobile drive moment of torsion to be allocated As described economic moment of torsion, wherein, each first moment of torsion is respectively less than described to be allocated first moment of torsion of machine effective specific fuel consumption Automobile drive moment of torsion, N is the positive integer more than 1.

10. the torque distribution device for hybrid vehicle according to claim 9 is it is characterised in that described second Acquisition module calculates the equivalent fuel consumption of engine under each first moment of torsion according to below equation：

Be '=BB ÷ { PA+ (PB-PA) × η 1 × η, 2 × η, 3 × η 4 } × 1000

11. torque distribution device for hybrid vehicle according to claim 8 are it is characterised in that mix when described Dynamic model formula is that during motor power-assisted drive pattern, engine and motor drive described hybrid vehicle, described second acquisition mould jointly Block is further used for：

Obtain M the second moment of torsion under same engine speed on the basis of described Automobile drive moment of torsion to be allocated, and calculate The engine under the equivalent fuel consumption of engine and described Automobile drive moment of torsion to be allocated under each second moment of torsion is effective Fuel consumption, and equivalent for described engine fuel consumption is less than starting under described Automobile drive moment of torsion to be allocated As described economic moment of torsion, wherein, each second moment of torsion is all higher than described to be allocated second moment of torsion of machine effective specific fuel consumption Automobile drive moment of torsion, M is the positive integer more than 1.

12. torque distribution device for hybrid vehicle according to claim 11 are it is characterised in that described second Acquisition module calculates the equivalent fuel consumption of engine under each second moment of torsion according to below equation：

Ce '={ CC+ (PA-PC)/η 3 × η 4/k } ÷ { PC+ (PA-PC)/η } × 1000

13. torque distribution device for hybrid vehicle according to claim 8 are it is characterised in that described start Machine discharge parameter includes carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio and hydrocarbons CH row Put ratio, wherein, described 3rd acquisition module is according to each economic moment of torsion corresponding carbon monoxide co discharge ratio, nitrogen oxides NOX Discharge ratio, the discharge of smoke intensity SF than and hydrocarbons CH discharge to calculate corresponding first emission of each economic moment of torsion than sum total Ratio, and according to described demand torque corresponding carbon monoxide co discharge ratio, nitrogen oxides DS NOx Est ratio, smoke intensity SF discharge ratio And hydrocarbons CH discharges total ratio than the second emission of the sum described demand torque of calculating.

A kind of 14. torque control devices of hybrid vehicle are it is characterised in that include：

First acquisition unit, for obtaining the current demand moment of torsion of described hybrid vehicle and currently mixing dynamic model formula；

Second acquisition unit, mix dynamic model formula and by engine torque allocation table obtained according to described current demand moment of torsion with currently Engine torque apportioning cost, by the moment of torsion distribution dress for hybrid vehicle as any one of claim 8-13 Put construction engine torque allocation table；

Moment of torsion allocation unit, for according to described engine torque apportioning cost and described current demand moment of torsion to described hybrid power The engine of automobile and motor carry out moment of torsion distribution.

A kind of 15. hybrid vehicles are it is characterised in that include requiring the moment of torsion control of the hybrid vehicle described in 14 according to power Device processed.